Mineral Resources On-Line Spatial Data
Interactive maps || Data download
This version of the online report provides complete access to NGS data, describes the history of the project, the methodology used, and presents preliminary geochemical maps for all analyzed elements. Future editions of this and other related reports will include the results of analysis of variance studies, as well as interpretive products related to the NGS data.
This database provides in digital form many geochemical analyses reported by USGS in its published literature.
U.S. Geological Survey, 2004, The National Geochemical Survey - database and documentation: U.S. Geological Survey Open-File Report 2004-1001, U.S. Geological Survey, Reston VA.Online Links:
For planning purposes, the nation was divided into ~33,000 cells, each with ~289 sq km area. These cells are shown in this map, color-coded by the status of sampling within the cell. Green areas are done. Pale green cells were missed during initial phases of the NGS and may be filled at some future date. In dark blue regions, collaborative sampling efforts by the USGS and state government agencies are under way. Red areas include both cells that will probably not be sampled (e.g., the Nevada Test Site) and cells for which sampling plans have not yet been developed. 967x484 pixels, 186k bytes.
This is a Point data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitude and longitude values are specified in decimal degrees.
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
Basic sample info
REC_NO Text 10 NURE record ID or USGS record ID code
LABNO Text 19 Unique laboratory name for analyzed sample
DATASET Text 26 Description of group of samples of which this one is a member
CATEGORY Text 20 General type of sample to which the sample-set belongs
TYPEDESC Text 12 Abbreviated description of sample type: stream/pond/spring/soil/etc
Geographic information
DATUM Text 7 Datum of the geographic coordinates
LATITUDE Real 20.5 Latitude in decimal degrees
LONGITUDE Real 20.5 Longitude in decimal degrees (negative = West)
QUAD24CODE Text 10 Code for the USGS 1:24,000 (7.5 minute) quadrangle in which sample is located
QUAD250COD Text 5 Code for the USGS 1:250,000 (1x2-degree) quadrangle in which sample is located
QUAD100COD Text 7 Code for the USGS 1:100,000 (1:62,500 in Alaska) quadrangle in which sample is located
FIPS_INT Integer 5 FIPS of county calculated from geographic coordinates
HUC_8 Text 8 8-digit hydrologic unit code calculated from geographic coordinates
QD250NAME Text 50 Name of USGS 1:250,000 (1x2-degree) quadrangle in which sample is located
Sample attributes
FLDNAM Text 19 Field name of sample, possibly corrected after laboratory analysis.
COLL_DATE Date 8 Day on which the sample was collected in the field
DESCRIPT Text 220 Sample description and field notes
STYPE Integer 4 3-digit code for the sample medium and collection protocol
SOIL_HORIZ Text 11 Soil horizon from which the sample was collected (soils only).
COLOR Text 26 Observed color of powdered sample during splitting, prior to USGS analysis
SMPGRSIZE Text 18 Grain size of material collected in the field (descriptive)
MEDIUM Text 9 Sample medium (rock, sediment, standard, or unknown)
SOURCE Text 14 Geological source of the sample medium that was collected
SOURCE_MOD Text 18 Adjective describing sample source
UPSIEVE Integer 4 Sieve size (micrometers) through which sample passed prior to analysis
DRIED Text 7 Manner in which sample was dried prior to analysis
STYPENOTE Text 72 Notes relevant to medium, source, source_mod, upsieve, and dried fields
Site attributes
SETTING Text 31 Physiographic setting of sample site
ACCHANWID Text 14 Width of active stream channel at collection site
WATERDEP Text 11 Depth of water at collection site
WATCOL Text 17 Color of water at collection site
FLOWSTAGE Text 17 Flow stage of stream at time of sample collection
FLOWRATE Text 23 Description of flow rate of stream at time of sample collection
STRBED Text 45 Material in stream bed at sample collection site
CONTAMSOU Text 30 Observed sources of anthropogenic contamination near sample site
CONTAMPOT Text 46 Likelihood that the sample is contaminated
CONTAMDEGR Text 13 Degree to which sample is likely to be contaminated
VEG Text 76 Description of vegetation around sample site
PH Real 10.3 pH of water at sample site
Sample attributes - detailed
GRAINSIZE Text 16 Grain size observed during splitting prior to USGS analysis (coarse or fine)
COLLECTOR Text 25 Name, abbreviation, or code for person or team that collected the sample
PRIME_ID Text 9 Primary NURE sample name
LASLID Text 6 Los Alamos NURE field name
ORNLID Text 7 Oak Ridge NURE field name
SRLID Text 9 Savannah River NURE field name
LLLID Text 8 Lawrence Livermore NURE field name
SITE Text 8 Other NURE name info
XSITE Text 7 Quality control/assurance info for Lawrence Livermore Lab
REPLC Text 3 NURE Replicate codes
LABCOND Real 10.3 Conductivity meaured in laboratory
GRABS Integer 2 Number of grabs or subsamples
SAMPHR Integer 2 Time of day that sample was collected
ORGN_PCT Integer 2 Estimated %organics
STUDY Text 4 Special NURE study code
ODOR Text 12 Sample odor observed in field
Site attributes - detailed
PHOTOS Text 19 Names of photographs taken at collection site
FLDPLNWID Text 11 Width of flood plain at sample collection site
RELIEF Text 27 Relief in drainage basin from which sample was collected
FORMATION Text 44 Code or name of geologic formation in which sample area was located
SGEOUNIT Text 4 Geologic unit at sample site
ALK Real 10.5 Total alkalinity of water at sample site
O_DISS Real 10.5 Dissolved oxygen (ppm) in water at sample site
SCIN Real 10.5 Gamma activity at sample site
AIRTEMP Real 10.3 Air temperature at time of collection
WTRTEMP Real 10.3 Water temperature at time of collection
COND Real 10.3 Conductivity of water at sample site
STRFLOW Real 10.5 Stream velocity (m/s) at sample collection site
STR_CHAN Text 10 Describes whether stream is depositing or eroding at collection site
WEATH Text 25 Weather observations at time of sample collection
VEG_DENS Text 12 Density of vegetation around sample site
ROCK_TYPE Text 20 Rock type in area of sample collection
ROCK_COL Text 15 Rock color in area of sample collection
Analyses by ICP/Acid dissolution
ICP40_JOB Text 10 Job number for ICP 40-element method
AL_ICP40 Real 12.5 Al (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
CA_ICP40 Real 12.5 Ca (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
FE_ICP40 Real 12.5 Fe (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
K_ICP40 Real 12.5 K (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
MG_ICP40 Real 12.5 Mg (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
NA_ICP40 Real 12.5 Na (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
P_ICP40 Real 12.5 P (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
TI_ICP40 Real 12.5 Ti (wt%) by Inductively Coupled Plasma Spectrometry after acid dissolution
AG_ICP40 Real 12.5 Ag (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
AS_ICP40 Real 12.5 As (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
AU_ICP40 Real 12.5 Au (ppb) by Inductively Coupled Plasma Spectrometry after acid dissolution
BA_ICP40 Real 12.5 Ba (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
BE_ICP40 Real 12.5 Be (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
BI_ICP40 Real 12.5 Bi (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
CD_ICP40 Real 12.5 Cd (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
CE_ICP40 Real 12.5 Ce (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
CO_ICP40 Real 12.5 Co (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
CR_ICP40 Real 12.5 Cr (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
CU_ICP40 Real 12.5 Cu (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
EU_ICP40 Real 12.5 Eu (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
GA_ICP40 Real 12.5 Ga (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
HO_ICP40 Real 12.5 Ho (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
LA_ICP40 Real 12.5 La (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
LI_ICP40 Real 12.5 Li (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
MN_ICP40 Real 12.5 Mn (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
MO_ICP40 Real 12.5 Mo (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
NB_ICP40 Real 12.5 Nb (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
ND_ICP40 Real 12.5 Nd (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
NI_ICP40 Real 12.5 Ni (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
PB_ICP40 Real 12.5 Pb (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
SC_ICP40 Real 12.5 Sc (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
SN_ICP40 Real 12.5 Sn (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
SR_ICP40 Real 12.5 Sr (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
TA_ICP40 Real 12.5 Ta (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
TH_ICP40 Real 12.5 Th (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
U_ICP40 Real 12.5 U (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
V_ICP40 Real 12.5 V (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
Y_ICP40 Real 12.5 Y (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
YB_ICP40 Real 12.5 Yb (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
ZN_ICP40 Real 12.5 Zn (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
CS_ICP40 Real 10.3 Cs (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
RB_ICP40 Real 10.3 Rb (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
SB_ICP40 Real 10.3 Sb (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
ZR_ICP40 Real 10.3 Zr (ppm) by Inductively Coupled Plasma Spectrometry after acid dissolution
Analyses by AA
AS_JOB Text 10 Job number for As method
AS_AA Real 11.3 As (ppm) by Hydride Atomic Absorption
SE_JOB Text 10 Job number for Se method
SE_AA Real 11.3 Se (ppm) by Hydride Atomic Absorption
HG_JOB Text 10 Job number for Hg method
HG_AA Real 12.5 Hg (ppm) by Cold Vapor Atomic Absorption
SB_JOB Text 10 Job number for Sb method
SB_AA Real 10.3 Sb (ppm) by Hydride Atomic Absorption
TE_JOB Text 10 Job number for Te method
TE_AA Real 11.3 Te (ppm) by Hydride Atomic Absorption
TL_JOB Text 10 Job number for Tl method
TL_AA Real 11.3 Tl (ppm) by Hydride Atomic Absorption
W_JOB Text 10 Job number for W method
W_VS Real 10.3 W (ppm) by Visible Spectrophotometry
AU_JOB Text 10 Job number for Au method
AU_AA Real 14.5 Au (ppb) by Graphite Furnace Atomic Absorption
PDPT_JOB Text 10 Job number for Pd and Pt method
PD_AA Real 10.3 Pd (ppb) by Graphite Furnace Atomic Absorption
PT_AA Real 10.3 Pt (ppb) by Graphite Furnace Atomic Absorption
Analyses by ICP Partial Chem
ICP10_JOB Text 10 Job number for ICP 10-element partial extraction method
AG_ICP10 Real 13.5 Ag (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
AS_ICP10 Real 13.5 As (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
AU_ICP10 Real 13.5 Au (ppb) by Partial Extraction Inductively Coupled Plasma Spectrometry
BI_ICP10 Real 13.5 Bi (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
CD_ICP10 Real 13.5 Cd (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
CU_ICP10 Real 13.5 Cu (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
MO_ICP10 Real 13.5 Mo (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
PB_ICP10 Real 13.5 Pb (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
SB_ICP10 Real 13.5 Sb (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
ZN_ICP10 Real 12.5 Zn (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
GA_ICP10 Real 10.3 Ga (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
HG_ICP10 Real 10.3 Hg (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
SE_ICP10 Real 10.3 Se (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
TE_ICP10 Real 10.3 Te (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
TL_ICP10 Real 10.3 Tl (ppm) by Partial Extraction Inductively Coupled Plasma Spectrometry
Analyses by Fusion ICP
ICP16_JOB Text 10 Job number for ICP 16-element fusion method
AL_ICP16 Real 9.3 Al (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
CA_ICP16 Real 9.3 Ca (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
FE_ICP16 Real 9.3 Fe (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
K_ICP16 Real 9.3 K (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
MG_ICP16 Real 9.3 Mg (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
NA_ICP16 Real 9.3 Na (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
P_ICP16 Real 9.3 P (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
SI_ICP16 Real 9.3 Si (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
TI_ICP16 Real 9.3 Ti (wt%) by Inductively Coupled Plasma Spectrometry after peroxide fusion
BA_ICP16 Real 9.3 Ba (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
CR_ICP16 Real 9.3 Cr (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
MN_ICP16 Real 9.3 Mn (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
NB_ICP16 Real 9.3 Nb (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
SR_ICP16 Real 9.3 Sr (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
Y_ICP16 Real 9.3 Y (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
ZR_ICP16 Real 9.3 Zr (ppm) by Inductively Coupled Plasma Spectrometry after peroxide fusion
Analyses by NAA
INAAJOB_US Text 10 Job number for USGS INAA method
INAAJOB_BE Text 10 Job number for Becquerel INAA method
NA_INAA Real 11.3 Na (wt%) by Instrumental Neutron Activation Analysis
SC_INAA Real 11.3 Sc (ppm) by Instrumental Neutron Activation Analysis
TI_INAA Real 11.3 Ti (wt%) by Instrumental Neutron Activation Analysis
CR_INAA Real 11.3 Cr (ppm) by Instrumental Neutron Activation Analysis
FE_INAA Real 11.3 Fe (wt%) by Instrumental Neutron Activation Analysis
CO_INAA Real 11.3 Co (ppm) by Instrumental Neutron Activation Analysis
NI_INAA Real 11.3 Ni (ppm) by Instrumental Neutron Activation Analysis
ZN_INAA Real 11.3 Zn (ppm) by Instrumental Neutron Activation Analysis
AS_INAA Real 11.3 As (ppm) by Instrumental Neutron Activation Analysis
BR_INAA Real 8.3 Br (ppm) by Instrumental Neutron Activation Analysis
RB_INAA Real 11.3 Rb (ppm) by Instrumental Neutron Activation Analysis
SR_INAA Real 11.3 Sr (ppm) by Instrumental Neutron Activation Analysis
ZR_INAA Real 11.3 Zr (ppm) by Instrumental Neutron Activation Analysis
MO_INAA Real 9.3 Mo (ppm) by Instrumental Neutron Activation Analysis
SB_INAA Real 11.3 Sb (ppm) by Instrumental Neutron Activation Analysis
CS_INAA Real 11.3 Cs (ppm) by Instrumental Neutron Activation Analysis
BA_INAA Real 11.3 Ba (ppm) by Instrumental Neutron Activation Analysis
LA_INAA Real 11.3 La (ppm) by Instrumental Neutron Activation Analysis
CE_INAA Real 11.3 Ce (ppm) by Instrumental Neutron Activation Analysis
ND_INAA Real 11.3 Nd (ppm) by Instrumental Neutron Activation Analysis
SM_INAA Real 11.3 Sm (ppm) by Instrumental Neutron Activation Analysis
EU_INAA Real 11.3 Eu (ppm) by Instrumental Neutron Activation Analysis
TB_INAA Real 11.3 Tb (ppm) by Instrumental Neutron Activation Analysis
YB_INAA Real 11.3 Yb (ppm) by Instrumental Neutron Activation Analysis
LU_INAA Real 11.3 Lu (ppm) by Instrumental Neutron Activation Analysis
HF_INAA Real 11.3 Hf (ppm) by Instrumental Neutron Activation Analysis
TA_INAA Real 11.3 Ta (ppm) by Instrumental Neutron Activation Analysis
W_INAA Real 11.3 W (ppm) by Instrumental Neutron Activation Analysis
AU_INAA Real 11.3 Au (ppb) by Instrumental Neutron Activation Analysis
TH_INAA Real 11.3 Th (ppm) by Instrumental Neutron Activation Analysis
U_INAA Real 11.3 U (ppm) by Instrumental Neutron Activation Analysis
DN_JOB Text 10 Job number for Delayed Neutron method
U_DN Real 8.3 U (ppm) by Delayed Neutron Activation Analysis
TH_DN Real 8.3 Th (ppm) by Delayed Neutron Activation Analysis
Analyses by XRF
XRF_JOB Text 10 Job number for XRF method
SIO2_XRF Real 10.3 SiO2 (wt%) by Wavelength-Dispersive X-Ray Fluorescence
AL2O3_XRF Real 10.3 Al2O3 (wt%) by Wavelength-Dispersive X-Ray Fluorescence
FE2O3_XRF Real 10.3 Fe2O3 (wt%) by Wavelength-Dispersive X-Ray Fluorescence
MGO_XRF Real 10.3 MgO (wt%) by Wavelength-Dispersive X-Ray Fluorescence
CAO_XRF Real 10.3 CaO (wt%) by Wavelength-Dispersive X-Ray Fluorescence
NA2O_XRF Real 10.3 Na2O (wt%) by Wavelength-Dispersive X-Ray Fluorescence
K2O_XRF Real 10.3 K2O (wt%) by Wavelength-Dispersive X-Ray Fluorescence
TIO2_XRF Real 10.3 TiO2 (wt%) by Wavelength-Dispersive X-Ray Fluorescence
P2O5_XRF Real 10.3 P2O5 (wt%) by Wavelength-Dispersive X-Ray Fluorescence
MNO_XRF Real 10.3 MnO (wt%) by Wavelength-Dispersive X-Ray Fluorescence
LOI925C Real 10.3 Loss on Ignition (wt%) preceding Wavelength-Dispersive X-Ray Fluorescence
Analyses for light elements
C_S_JOB Text 10 Job number for Carbon and Sulfur method
C_TOT Real 13.3 Total carbon (wt%) by Combustion
C_ORG Real 10.3 Organic carbon (wt%) by difference from c_tot and c_co3
C_CO3 Real 10.3 Carbonate carbon (wt%) by Coulometric Titration
S_TOT Real 10.3 Total sulfur (wt%) by Combustion
Analyses by NURE program
AL_NURE Real 12.5 Al (wt%) measured by the NURE program
CA_NURE Real 12.5 Ca (wt%) measured by the NURE program
FE_NURE Real 12.5 Fe (wt%) measured by the NURE program
K_NURE Real 12.5 K (wt%) measured by the NURE program
MG_NURE Real 12.5 Mg (wt%) measured by the NURE program
NA_NURE Real 12.5 Na (wt%) measured by the NURE program
AG_NURE Real 12.5 Ag (ppm) measured by the NURE program
AS_NURE Real 12.5 As (ppm) measured by the NURE program
AU_NURE Real 12.5 Au (ppb) measured by the NURE program
B_NURE Real 12.5 B (ppm) measured by the NURE program
BA_NURE Real 12.5 Ba (ppm) measured by the NURE program
BE_NURE Real 12.5 Be (ppm) measured by the NURE program
BI_NURE Real 12.5 Bi (ppm) measured by the NURE program
BR_NURE Real 12.5 Br (ppm) measured by the NURE program
CD_NURE Real 12.5 Cd (ppm) measured by the NURE program
CE_NURE Real 12.5 Ce (ppm) measured by the NURE program
CL_NURE Real 12.5 Cl (ppm) measured by the NURE program
CO_NURE Real 12.5 Co (ppm) measured by the NURE program
CR_NURE Real 12.5 Cr (ppm) measured by the NURE program
CS_NURE Real 12.5 Cs (ppm) measured by the NURE program
CU_NURE Real 12.5 Cu (ppm) measured by the NURE program
DY_NURE Real 12.5 Dy (ppm) measured by the NURE program
EU_NURE Real 12.5 Eu (ppm) measured by the NURE program
F_NURE Real 12.5 F (ppm) measured by the NURE program
HF_NURE Real 12.5 Hf (ppm) measured by the NURE program
HG_NURE Real 12.5 Hg (ppm) measured by the NURE program
LA_NURE Real 12.5 La (ppm) measured by the NURE program
LI_NURE Real 12.5 Li (ppm) measured by the NURE program
LU_NURE Real 12.5 Lu (ppm) measured by the NURE program
MN_NURE Real 12.5 Mn (ppm) measured by the NURE program
MO_NURE Real 12.5 Mo (ppm) measured by the NURE program
NB_NURE Real 12.5 Nb (ppm) measured by the NURE program
NI_NURE Real 12.5 Ni (ppm) measured by the NURE program
P_NURE Real 12.5 P (ppm) measured by the NURE program
PB_NURE Real 12.5 Pb (ppm) measured by the NURE program
PT_NURE Real 12.5 Pt (ppm) measured by the NURE program
RB_NURE Real 12.5 Rb (ppm) measured by the NURE program
SB_NURE Real 12.5 Sb (ppm) measured by the NURE program
SC_NURE Real 12.5 Sc (ppm) measured by the NURE program
SE_NURE Real 12.5 Se (ppm) measured by the NURE program
SM_NURE Real 12.5 Sm (ppm) measured by the NURE program
SN_NURE Real 12.5 Sn (ppm) measured by the NURE program
SR_NURE Real 12.5 Sr (ppm) measured by the NURE program
TA_NURE Real 12.5 Ta (ppm) measured by the NURE program
TB_NURE Real 12.5 Tb (ppm) measured by the NURE program
TH_NURE Real 12.5 Th (ppm) measured by the NURE program
TI_NURE Real 12.5 Ti (wt%) measured by the NURE program
V_NURE Real 12.5 V (ppm) measured by the NURE program
W_NURE Real 12.5 W (ppm) measured by the NURE program
Y_NURE Real 12.5 Y (ppm) measured by the NURE program
YB_NURE Real 12.5 Yb (ppm) measured by the NURE program
ZN_NURE Real 12.5 Zn (ppm) measured by the NURE program
ZR_NURE Real 12.5 Zr (ppm) measured by the NURE program
U_NURE Real 12.5 U (ppm) [Preferred value if more than one method was used by NURE]
Analytical details
LABNO2 Text 19 A second name under which the same sample was analyzed
PREV_LABNO Text 16 Unique laboratory name for sample when analyzed at USGS 1980-1997.
FLDNAM_AN Text 19 Field name of sample as analyzed (authoritative name in FLDNAM field)
AOV_CODE Text 2 Analysis of variance code
REPLICATE Text 10 Lab number of duplicate analysis
LOC_COUNT Integer 2 Number of samples at these coordinates
ANAL_NOTES Text 40 Notes made during processing of data
NURE_METH Text 40 Analytical method codes for ~1980 NURE data
Jeffrey N. Grossman: Principal author of this report; database design and data processing; development of geochemical mapping methods; development of computer methods in support of geochemical sampling.Andrew E. Grosz: Project concept, design, and leadership; development and supervision of sampling protocols and field methods; development of collaborative activities between the USGS and other agencies.
Peter N. Schweitzer: Development of data retrieval software; website programming.
Paul G. Schruben: GIS support; report generation; sample site maps; sample preparation.
703-648-6184 (voice)
703-648-6383 (FAX)
jgrossman@usgs.gov
These data will compose a complete, national-scale geochemical coverage of the US, and will enable construction of geochemical maps, refine estimates of baseline concentrations of chemical elements in the sampled media, and provide context for a wide variety of studies in the geological and environmental sciences. The goal of the NGS is to analyze at least one stream-sediment sample in every 289 km2 area by a single set of analytical methods across the entire nation, with other solid sample media substituted where necessary.
Smith, Steven M., 1997, Reformatted data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program: U.S. Geological Survey Open-File Report 97-492.Online Links:
Goldhaber, Martin B., Irwin, Elise, Atkins, Brian, Lee, Lopaka, Black, Dee Dee, Zappia, Humbert, Hatch, Joe, Pashin, Jack, Barwick, Larry H., Cartwright, Walter E., Sanzolone, Rick, Ruppert, Leslie, Kolker, Allan, and Finkelman, Robert, 2001, Arsenic in Stream Sediments of Northern Alabama: U.S. Geological Survey Miscellaneous Field Studies Map MF-2357.Online Links:
A suite of 1690 samples from northern Alabama (excluding the northeast corner), was pulled from the NURE archive and analyzed in 1998 for a project by M. Goldhaber (Goldhaber and others, 2001). Most were analyzed by the ICP40 and As methods only.
Cannon, W.F., Woodruff, L.G., and Pimley, Shana, 2003, Some statistical relationships between stream sediment and soil geochemistry in northwestern Wisconsin--can stream sediment compositions be used to predict compositions of soils in glaciated terranes?: Journal of Geochemical Exploration v. 81.
Folger, H.W., 2000, Analytical results and sample locations of reanalyzed NURE stream-sediment and soil samples for the Humboldt River Basin mineral-environmental resource assessment, northern Nevada: U.S. Geological Survey Open-File Report 00-421.
Tuttle, Michele L.W., Goldhaber, Martin B., Ruppert, Leslie F., and Hower, James C., 2002, Arsenic in rocks and stream sediments of the central Appalachian Basin, Kentucky: U.S. Geological Survey Open-File Report 02-28.Online Links:
King, H.D., D.L., Fey, Motooka, J.M., Knight, R.J., B.H., Roushey, and McGuire, D.J., 1996, Analytical data and sample locality map of stream-sediment and soil samples from the Winnemucca-Surprise Resource Assessment Area, northwest Nevada and northeast California: U.S. Geological Survey Open-File Report 96-62-B.
Kilburn, J.E., Smith, D.B., and Hopkins, R.T., 1990, Analytical results and sample locality map of stream sediment samples from the Reno 1 degree x 2 degree quadrangle, California and Nevada: U.S. Geological Survey Open-File Report 90-204.
Baedecker, Phillip A., Grossman, Jeffrey N., and Buttleman, Kim P., 1998, National Geochemical Database: PLUTO geochemical database for the United States: U.S. Geological Survey Digital Data Series DDS-47.
Colman, John A., and Sanzolone, Richard F., 1990, Surface-water quality assessment of the upper Illinois River basin in Illinois, Indiana, and Wisconsin; geochemical data for fine-fraction streambed sediment from high- and low-order streams, 1987: U.S. Geological Survey Open-File Report 90-571.
Colman, John A., and Sanzolone, Richard F., 1992, Geochemical characterization of streambed sediment in the upper Illinois River basin: U.S. Geological Survey Water Resources Bulletin v. 28, no. 5.
Sanzolone, Richard F., and Ryder, Jean L., 1989, Quality assessment program and results for the NAWQA surface water pilot studies: U.S. Geological Survey Open-File Report 89-658.
Wilson, S.A., Kennedy, K.R., Gent, C.A., Briggs, P.H., Tidball, R.R., and McNeal, J.M., 1990, Analysis of soil samples from the San Joaquin Valley of California: U.S. Geological Survey Open-File Report 90-214.
Bailey, Eizabeth A., Smith, David B., Abston, Carl C., Granitto, Matthew, and Burleigh, Kuuipo A., 1999, National Geochemical Database: U.S. Geological Survey RASS (Rock Analysis Storage System) geochemical data for Alaska: U.S. Geological Survey Open-File Report 99-433.Online Links:
D.E., Thompson, A.E., Grosz, J.M., McNeal, and J.N., Grossman, 1998, Surface geochemistry of Mississippi to be surveyed: Mississippi Geology v. 19, no. 2.
D.E., Thompson, A.E., Grosz, P.G., Schruben, and J.N., Grossman, 2002, Solid-phase geochemical survey of the State of Mississippi; on the nature and distribution of As, Se, Hg, Cu, Pb, and Zn in stream sediments and soils [abstract]:.This is part of the following larger work.
Curry, K.J. (editor), 2002, Mississippi Academy of Sciences Sixty-Sixth Annual Meeting: Journal of the Mississippi Academy of Sciences v. 47, no. 1.
Sampling has been carried out over several decades in a variety of field programs run by numerous Federal and state agencies. Groups of samples collected by the same agency or research program are referred to in the documentation as separate "datasets", meaning the samples will have a common value for the fields CATEGORY and DATASET. The CATEGORY field indicates the general type of research program collecting the samples, while the DATASET field identifies the specific project, state government, or investigator in whose effort the samples were collected. These are described more fully in <http://tin.er.usgs.gov/geochem/doc/groups-cats.htm>
By 1998-1999, it had become clear within the USGS Mineral Resources Prgram that there would be great benefits to combining earlier efforts in the southeastern states with other regional geochemical assessments being conducted by the program in the western US, and expanding to a national scale. A new national effort comprising four interlinked regional "Surveys and Analysis" projects was begun, including a task to undertake a National Geochemical Survey (NGS). A complete national geochemical coverage was sought, using an internally consistent set of analytical methods and principally based on stream sediments. The minimum sample density was planned to be 1 sample per 289 km2 in all land areas of the country (i. e., based on a 17x17 km sampling grid). Analytical methods were chosen to include a 40-element ICP package plus single-element determinations of As, Se, and Hg by atomic absorption for every sample.
Data sources produced in this process:
Data sources produced in this process:
Data sources produced in this process:
Data sources produced in this process:
Data sources produced in this process:
Grossman, J.N., 1998, National Geochemical Atlas: The geochemical landscape of the conterminous United States derived from stream sediment and other solid sample media analyzed by the National Uranium Resource Evaluation (NURE) program: U.S. Geological Survey Open File Report 98-622.
Gustavsson, N., Bølviken, B., Smith, D.B., and Severson, R.C., 2001, Geochemical landscapes of the conterminous United States -- New map presentations for 22 elements: U.S. Geological Survey Professional Paper 1648.Online Links:
The database contains a wide variety of analytical results from methods whose reliability is generally well understood. The most reliable analytical methods are the following fields:
AL_ICP40 CA_ICP40 FE_ICP40 K_ICP40 MG_ICP40 NA_ICP40 P_ICP40 TI_ICP40 BA_ICP40 BE_ICP40 CE_ICP40 CO_ICP40 CR_ICP40 CU_ICP40 EU_ICP40 GA_ICP40 LA_ICP40 LI_ICP40 MN_ICP40 NB_ICP40 ND_ICP40 NI_ICP40 PB_ICP40 SC_ICP40 SR_ICP40 TH_ICP40 V_ICP40 Y_ICP40 YB_ICP40 ZN_ICP40 CS_ICP40 RB_ICP40 SB_ICP40 ZR_ICP40 AS_AA SE_AA HG_AA SB_AA TE_AA TL_AA W_VS AU_AA PD_AA PT_AA AS_ICP10 AU_ICP10 CD_ICP10 CU_ICP10 MO_ICP10 PB_ICP10 ZN_ICP10 GA_ICP10 HG_ICP10 SE_ICP10 TE_ICP10 TL_ICP10 AL_ICP16 CA_ICP16 FE_ICP16 K_ICP16 MG_ICP16 NA_ICP16 P_ICP16 SI_ICP16 TI_ICP16 BA_ICP16 CR_ICP16 MN_ICP16 NB_ICP16 SR_ICP16 Y_ICP16 ZR_ICP16 NA_INAA SC_INAA TI_INAA CR_INAA FE_INAA CO_INAA NI_INAA ZN_INAA AS_INAA BR_INAA RB_INAA SR_INAA ZR_INAA SB_INAA CS_INAA BA_INAA LA_INAA CE_INAA ND_INAA SM_INAA EU_INAA TB_INAA YB_INAA LU_INAA HF_INAA TA_INAA W_INAA AU_INAA TH_INAA U_INAA U_DN TH_DN SIO2_XRF AL2O3_XRF FE2O3_XRF MGO_XRF CAO_XRF NA2O_XRF K2O_XRF TIO2_XRF P2O5_XRF MNO_XRF LOI925C TH_NURE U_NURE
The accuracy of geographic sample locations depends on the procedures used by the original sampling program. Some general statements can be made, however.
NGS Samples: For samples collected by the NGS (SW-ALASKA and State datasets) all coordinates were measured by handheld global positioning systems (GPS). Data were recorded in a variety of formats (decimal degrees, degrees plus decimal minutes, degrees-minutes-seconds, and UTM coordinates), and all were translated into decimal degrees.
NURE samples: The coordinates of NURE samples (in all NURE datasets) , measured in the pre-GPS era, were digitized from field maps; a discussion of these methods and what datum was used may be found here.
Other samples: The coordinates of all other samples (PLUTO and RASS datasets) were determined by unknown methods, unless specifically discussed in any primary publications on these datasets. Because most were collected in the pre-GPS era, most were probably digitized or otherwise read from field maps used during collection. It is likely that the NAD27 datum and Clarke 1866 ellipsoid were used on most such maps, but this is not known with confidence.
At the present time, the NGS includes data covering about 71% of the land area of the US, including samples in all 50 states.
Four of the analytical methods are considered to be most important for general coverage of the subject: the ICP 40-element acid dissolution group, and determination of Arsenic, Mercury, and Selenium by hydride-generation atomic absorption. Data from other analytical methods are provided when available but it was not the principal goal of the study to ensure that these analyses were completed on most samples. Only about 5% of the samples lack data from the ICP 40-element methods, and 25% to 35% of samples lack data from the primary AA methods (for As, Hg, and Se).
The following table shows for each database field the number of empty cells and the proportion of the whole database that number represents.
Field name Missing Percent
Sample identification
REC_NO 0 0.0
LABNO 0 0.0
DATASET 0 0.0
CATEGORY 2729 3.9
TYPEDESC 6 0.0
Geographic location
DATUM 13579 19.3
LATITUDE 2803 4.0
LONGITUDE 2803 4.0
QUAD24CODE 9362 13.3
QUAD250COD 2782 4.0
QUAD100COD 2808 4.0
FIPS_INT 2782 4.0
HUC_8 2804 4.0
QD250NAME 2782 4.0
ZIP3 2806 4.0
CONGDIST 2806 4.0
Sample characteristics
FLDNAM 2 0.0
COLL_DATE 0 0.0
DESCRIPT 2532 3.6
STYPE 6 0.0
SOIL_HORIZ 63183 89.8
COLOR 36315 51.6
SMPGRSIZE 59512 84.6
MEDIUM 6 0.0
SOURCE 2720 3.9
SOURCE_MOD 19641 27.9
UPSIEVE 3540 5.0
DRIED 11771 16.7
STYPENOTE 45047 64.0
Site characteristics
SETTING 60013 85.3
ACCHANWID 33857 48.1
WATERDEP 33875 48.1
WATCOL 45163 64.2
FLOWSTAGE 21486 30.5
FLOWRATE 44492 63.2
STRBED 19804 28.1
CONTAMSOU 14126 20.1
CONTAMPOT 58672 83.4
CONTAMDEGR 68546 97.4
VEG 16267 23.1
PH 51554 73.3
Sample characteristics (details)
GRAINSIZE 46988 66.8
COLLECTOR 30813 43.8
PRIME_ID 19976 28.4
LASLID 55035 78.2
ORNLID 54452 77.4
SRLID 45473 64.6
LLLID 65548 93.2
SITE 63631 90.4
XSITE 70336 100.0
REPLC 25323 36.0
LABCOND 70351 100.0
GRABS 40119 57.0
SAMPHR 49733 70.7
ORGN_PCT 65007 92.4
STUDY 70026 99.5
ODOR 64856 92.2
Site characteristics (details)
PHOTOS 66893 95.1
FLDPLNWID 64933 92.3
RELIEF 18458 26.2
FORMATION 48761 69.3
SGEOUNIT 51700 73.5
ALK 59919 85.2
O_DISS 67280 95.6
SCIN 45205 64.2
AIRTEMP 49965 71.0
WTRTEMP 51416 73.1
COND 51352 73.0
STRFLOW 65019 92.4
STR_CHAN 49211 69.9
WEATH 38168 54.2
VEG_DENS 24891 35.4
ROCK_TYPE 42150 59.9
ROCK_COL 58434 83.0
Analyses by ICP/Acid dissolution
ICP40_JOB 3540 5.0
AL_ICP40 3563 5.1
CA_ICP40 3563 5.1
FE_ICP40 3563 5.1
K_ICP40 3563 5.1
MG_ICP40 3575 5.1
NA_ICP40 3563 5.1
P_ICP40 3607 5.1
TI_ICP40 3563 5.1
AG_ICP40 3563 5.1
AS_ICP40 3797 5.4
AU_ICP40 3797 5.4
BA_ICP40 3571 5.1
BE_ICP40 3563 5.1
BI_ICP40 4729 6.7
CD_ICP40 3563 5.1
CE_ICP40 3563 5.1
CO_ICP40 3563 5.1
CR_ICP40 3563 5.1
CU_ICP40 3563 5.1
EU_ICP40 7287 10.4
GA_ICP40 3563 5.1
HO_ICP40 8441 12.0
LA_ICP40 3563 5.1
LI_ICP40 3563 5.1
MN_ICP40 3581 5.1
MO_ICP40 3563 5.1
NB_ICP40 3823 5.4
ND_ICP40 7275 10.3
NI_ICP40 3563 5.1
PB_ICP40 3563 5.1
SC_ICP40 3563 5.1
SN_ICP40 4729 6.7
SR_ICP40 3576 5.1
TA_ICP40 8441 12.0
TH_ICP40 3563 5.1
U_ICP40 4729 6.7
V_ICP40 3563 5.1
Y_ICP40 3563 5.1
YB_ICP40 7275 10.3
ZN_ICP40 3565 5.1
CS_ICP40 66653 94.7
RB_ICP40 66653 94.7
SB_ICP40 66653 94.7
ZR_ICP40 66653 94.7
Analyses by AA
AS_JOB 16009 22.8
AS_AA 16009 22.8
SE_JOB 22236 31.6
SE_AA 22236 31.6
HG_JOB 21206 30.1
HG_AA 21206 30.1
SB_JOB 67852 96.4
SB_AA 67852 96.4
TE_JOB 69195 98.3
TE_AA 69195 98.3
TL_JOB 68415 97.2
TL_AA 68415 97.2
W_JOB 69061 98.1
W_VS 69061 98.1
AU_JOB 45579 64.8
AU_AA 45579 64.8
PDPT_JOB 63301 90.0
PD_AA 63301 90.0
PT_AA 64701 92.0
Analyses by ICP Partial Chem
ICP10_JOB 55996 79.6
AG_ICP10 55996 79.6
AS_ICP10 55996 79.6
AU_ICP10 59622 84.7
BI_ICP10 55996 79.6
CD_ICP10 55996 79.6
CU_ICP10 56001 79.6
MO_ICP10 55996 79.6
PB_ICP10 55996 79.6
SB_ICP10 55996 79.6
ZN_ICP10 56000 79.6
GA_ICP10 66737 94.8
HG_ICP10 67058 95.3
SE_ICP10 67510 95.9
TE_ICP10 66737 94.8
TL_ICP10 66737 94.8
Analyses by Fusion ICP
ICP16_JOB 68464 97.3
AL_ICP16 68464 97.3
CA_ICP16 68464 97.3
FE_ICP16 68464 97.3
K_ICP16 68464 97.3
MG_ICP16 68464 97.3
NA_ICP16 68464 97.3
P_ICP16 68464 97.3
SI_ICP16 68688 97.6
TI_ICP16 68464 97.3
BA_ICP16 68464 97.3
CR_ICP16 68464 97.3
MN_ICP16 68464 97.3
NB_ICP16 68464 97.3
SR_ICP16 68464 97.3
Y_ICP16 68464 97.3
ZR_ICP16 68464 97.3
Analyses by NAA
INAAJOB_US 64649 91.9
INAAJOB_BE 61829 87.9
NA_INAA 57519 81.7
SC_INAA 57487 81.7
TI_INAA 61963 88.1
CR_INAA 57493 81.7
FE_INAA 57507 81.7
CO_INAA 57487 81.7
NI_INAA 57566 81.8
ZN_INAA 58474 83.1
AS_INAA 57533 81.8
BR_INAA 61833 87.9
RB_INAA 57588 81.8
SR_INAA 65165 92.6
ZR_INAA 57500 81.7
MO_INAA 61833 87.9
SB_INAA 57559 81.8
CS_INAA 57518 81.7
BA_INAA 57536 81.8
LA_INAA 57488 81.7
CE_INAA 57487 81.7
ND_INAA 57493 81.7
SM_INAA 57488 81.7
EU_INAA 57487 81.7
TB_INAA 57489 81.7
YB_INAA 57489 81.7
LU_INAA 57491 81.7
HF_INAA 57489 81.7
TA_INAA 57488 81.7
W_INAA 57696 82.0
AU_INAA 57537 81.8
TH_INAA 57487 81.7
U_INAA 57487 81.7
DN_JOB 69766 99.2
U_DN 69766 99.2
TH_DN 69766 99.2
Analyses by XRF
XRF_JOB 66795 94.9
SIO2_XRF 66798 94.9
L2O3_XRF 66795 94.9
FE2O3_XRF 66796 94.9
MGO_XRF 66795 94.9
CAO_XRF 66795 94.9
NA2O_XRF 66795 94.9
K2O_XRF 66795 94.9
TIO2_XRF 66797 94.9
P2O5_XRF 66796 94.9
MNO_XRF 66795 94.9
LOI925C 66795 94.9
Analyses for light elements
C_S_JOB 69416 98.7
C_TOT 69416 98.7
C_ORG 69841 99.3
C_CO3 69792 99.2
S_TOT 69782 99.2
Analyses by NURE program
AL_NURE 26857 38.2
CA_NURE 38881 55.3
FE_NURE 26462 37.6
K_NURE 36952 52.5
MG_NURE 36938 52.5
NA_NURE 26806 38.1
AG_NURE 35790 50.9
AS_NURE 54102 76.9
AU_NURE 40720 57.9
B_NURE 54459 77.4
BA_NURE 36587 52.0
BE_NURE 41728 59.3
BI_NURE 59027 83.9
BR_NURE 70304 99.9
CD_NURE 59027 83.9
CE_NURE 27641 39.3
CL_NURE 58971 83.8
CO_NURE 36384 51.7
CR_NURE 36288 51.6
CS_NURE 58954 83.8
CU_NURE 35896 51.0
DY_NURE 44479 63.2
EU_NURE 42409 60.3
F_NURE 70229 99.8
HF_NURE 30650 43.6
HG_NURE 70294 99.9
LA_NURE 31508 44.8
LI_NURE 41087 58.4
LU_NURE 43320 61.6
MN_NURE 26030 37.0
MO_NURE 47168 67.0
NB_NURE 36001 51.2
NI_NURE 35849 50.9
P_NURE 47185 67.1
PB_NURE 39617 56.3
PT_NURE 69372 98.6
RB_NURE 58955 83.8
SB_NURE 58955 83.8
SC_NURE 25602 36.4
SE_NURE 54405 77.3
SM_NURE 41562 59.1
SN_NURE 51643 73.4
SR_NURE 39715 56.4
TA_NURE 59059 83.9
TB_NURE 59736 84.9
TH_NURE 25845 36.7
TI_NURE 27042 38.4
V_NURE 25946 36.9
W_NURE 51609 73.3
Y_NURE 47735 67.8
YB_NURE 45068 64.1
ZN_NURE 35890 51.0
ZR_NURE 48695 69.2
U_NURE 25751 36.6
Processing information
LABNO2 59440 84.5
PREV_LABNO 68420 97.2
FLDNAM_AN 18 0.0
AOV_CODE 65468 93.0
REPLICATE 65468 93.0
LOC_COUNT 2801 4.0
ANAL_NOTES 69685 99.0
NURE_METH 24730 35.1
The samples and data that compose the NGS come from a wide variety of sources. These sources can be placed in 5 broad categories based on who collected and analyzed the samples. The CATEGORY field of the database is used to store this information. Within each category, records can be broken down into a large number of datasets, each of which contains data on samples collected and analyzed together. The DATASET field of the database stores this information.
Descriptions of Datasets and Categories in the NGS: <http://tin.er.usgs.gov/geochem/doc/groups-cats.htm>
A limited number of analytical methods were used for samples in the NGS in order to provide the maximum level of internal consistency possible to the database.
For every analytical data field in the NGS, there is an associated field pointing to information about the method used to make the analyses. These fields contain "job numbers," which are names laboratories assigned to batches of samples that were all run together. Multi-element methods (all ICP and neutron activation methods, XRF, PGE analysis, and forms-of-carbon) each have a single field containing job information that is applicable to all analyzed elements. Single-element methods (As, Au, Hg, Sb, Se, Te, Tl, and W) each have their own field containing this information.
Analytical Methods and Database Fields in the NGS: <http://tin.er.usgs.gov/geochem/doc/analysis.htm>
Are there legal restrictions on access or use of the data?
- Access_Constraints: none
- Use_Constraints:
- Mercury is a difficult element for which to obtain accurate analyses. Samples can easily be contaminated with Hg during handling, storage, and preparation for analysis. Mercury can also be lost from samples during the drying process or while in storage. Recently collected samples were handled and stored in a manner that should result in few such problems. However, many Hg data in the NGS are based on reanalyses of archival samples, e.g., NURE samples, that were neither collected using protocols appropriate for Hg analysis, nor stored under conditions that would necessarily preserve the original Hg concentrations. Some NURE samples in the eastern US were very likely contaminated by Hg at some point after collection (e.g., all samples from Allegany County, Maryland). At the present time, it is not known which archival samples may have been contaminated with Hg in the laboratory, and thus extreme caution should be exercised in interpreting NGS data.
703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
USGS Open-File Report 2004-1001
The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although this data has been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of this data on any other system, nor does the fact of distribution constitute or imply any such warranty.In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by the USGS.
| Data format: | Sample information and geochemical measurements, geographic areas of coverage specified by the user in format Shapefile (version 1.0) |
|---|---|
| Network links: |
<http://tin.er.usgs.gov/geochem/select.php> |
| Data format: | Sample information and geochemical measurements, geographic areas of coverage specified by the user in format DBF (version dBase III) |
|---|---|
| Network links: |
<http://tin.er.usgs.gov/geochem/select.php> |
| Data format: | Sample information and geochemical measurements, geographic areas of coverage specified by the user in format HTML (version 2.0) |
|---|---|
| Network links: |
<http://tin.er.usgs.gov/geochem/select.php> |
| Data format: | Sample information and geochemical measurements, geographic areas of coverage specified by the user in format Text Tab-delimited or comma-delimited, at user's option |
|---|---|
| Network links: |
<http://tin.er.usgs.gov/geochem/select.php> |
703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://tin.er.usgs.gov/metadata/ofr-2004-1001.faq.html
Page Contact Information: Peter Schweitzer
Page Last Modified: Friday, 03-Oct-2008 12:03:13 EDT