| Figure |
Description |
3-1
low-res (129 KB)
high-res (659 KB) |
Illustrations of four combinations of concavity and convexity. |
3-2
low-res (62 KB)
high-res (318 KB) |
Four shapes of lines for description of land surface shapes. |
3-3
low-res (113 KB)
high-res (610 KB) |
Characteristic microrelief of the gilgai type (Texas). |
3-4
low-res (179 KB)
high-res (889 KB) |
V-shaped gullies in a material relatively high in clay. |
3-5
low-res (170 KB)
high-res (867 KB) |
U-shaped gullies in a soil underlain by more erodible material. |
3-6
low-res (123 KB)
high-res (679 KB) |
Sheet erosion. Rills formed as water accumulated in small channels part
way down the slope. Sediment was deposited at the foot of the slope. |
3-7
low-res (110 KB)
high-res (631 KB) |
Class 2 erosion. The plowed layer of the light-colored areas is made up
mainly of the original surface soil, whereas the plowed layer of the
dark-colored areas is a mixture of the original surface soil and an
underlying horizon. |
3-8
low-res (129 KB)
high-res (703 KB) |
Class 3 erosion. Gullies at the left require a gully symbol. The rills
would be obliterated by tillage. Most of the original surface soil between
rills has been lost. |
3-9
low-res (131 KB)
high-res (667 KB) |
Class 4 erosion intermingled with class 3 erosion. The areas in the
middle and left have lost almost all diagnostic horizons. The areas in the
foreground and far background have class 3 erosion. |
3-10
low-res (89 KB)
high-res (398 KB) |
Model based curve for a medium-textured horizon and the relationships of
water state class limits to water contents determined from the desorption
curve. |
3-11
low-res (119 KB)
high-res (648 KB) |
Saturated hydraulic conductivity classes. A clay loam with a bulk density
of 1.40 g/cc and 35 percent both sand and clay falls in the medium class.
|
3-12
low-res (121 KB)
high-res (785 KB) |
Bulk density and texture and texture relationships. |
3-13
low-res (198 KB)
high-res (899 KB) |
Five kinds of near surface subzones. The scale is approximately 18 cm.
|
3-14
low-res (88 KB)
high-res (410 KB) |
Relationships among particle size classes of 5 different systems. |
3-15
low-res (167 KB)
high-res (742 KB) |
Sizes of particles of indicated diameters (d). In millimeters. |
3-16
low-res (120 KB)
high-res (559 KB) |
Chart showing the percentages of clay, silt, and sand in the textural
classes. |
3-17
low-res (183 KB)
high-res (878 KB) |
A soil with a cobbly horizon. Both angular cobbles and angular pebbles
are present, but the cobbles dominate in the limitations they impose. Rock
fragments occupy about 25 percent by volume of the plowed layer. |
3-18
low-res (147 KB)
high-res (741 KB) |
A soil with a very cobbly surface horizon. Rock fragments occupy about 40
percent of the plowed layer and are concentrated on the surface. |
3-19
low-res (112 KB)
high-res (633 KB) |
An area of a bouldery soil (class 1). |
3-20
low-res (100 KB)
high-res (571 KB) |
An area of a very bouldery soil (class 2). |
3-21
low-res (167 KB)
high-res (809 KB) |
An area of an extremely bouldery soil (class 3). |
3-22
low-res (153 KB)
high-res (758 KB) |
An area of a rubbly soil (class 4). |
3-23
low-res (166 KB)
high-res (772 KB) |
An area of a very rubbly soil (class 5). |
3-24
low-res (108 KB)
high-res (593 KB) |
The arrangement of color chips according to value and chroma on the
soil-color card of 10YR hue. |
3-25
low-res (79 KB)
high-res (416 KB) |
A schematic diagram of relationships among the five principle and five
intermediate hues of the Munsell Color System, and subdivisions within the
part used for most soil colors. |
3-26
low-res (199 KB)
high-res (859 KB) |
Strong thin platy structure. |
3-27
low-res (195 KB)
high-res (895 KB) |
Strong medium prismatic structure. The prisms are 35 to 45 mm across.
|
3-28
low-res (137 KB)
high-res (656 KB) |
A cluster of strong medium columnar peds. The cluster is about 135 mm
across. |
3-29
low-res (142 KB)
high-res (934 KB) |
Strong medium and coarse blocky peds. |
3-30
low-res (195 KB)
high-res (1.0 MB) |
Strong fine and medium granular peds. |
3-31
low-res (155 KB)
high-res (716 KB) |
Natural fragments formed by cracking of a massive soil as it contracted
upon drying. |
3-32
low-res (173 KB)
high-res (770 KB) |
Intersecting slickensides in the Bss horizon of a Udic Haplustert. The
cracking is due to drying after exposure. |
3-33
low-res (95 KB)
high-res (562 KB) |
Nodules and concretions: an unbroken nodule at the left; a broken
concretion at the right; a hollow nodule in the middle. |
3-34
low-res (97 KB)
high-res (548 KB) |
Diagram illustrating the visual impressions of abundance classes of Very
fine and Fine Roots and Pores in relation to size. |
3-35
low-res (94 KB)
high-res (549 KB) |
Diagram illustrating the visual impressions of abundance classes of
Medium and Coarse Roots and Pores in relation to size. |
3-36
low-res (230 KB)
high-res (1.13 MB) |
Cicada casts at about 0.4 actual size. The photograph is a close-up view
of an indurated horizon about 35 cm thick. Cicada casts in varying stages of
induration are common in some soils of semiarid climates. |
| Figure |
Description |
| 4-1 |
Stereoscopic study of an area prior to field work is helpful (No longer
available). |
| 4-2 |
Using a common pocket stereoscope (No longer available). |
4-3
low-res (131 KB)
high-res (689 KB) |
Sharply defined boundary between sandy soils on a high terrace (at
right) and loamy soils on a lower terrace. |
4-4
low-res (130 KB)
high-res (710 KB) |
Broad transition zones between contrasting soils. Dark areas are
Brookston soils; light areas are Crosby soils. |
4-5
low-res (75 KB)
high-res (334 KB) |
Failure to join adjacent field sheets: A, boundaries do not match where
four field sheets join; B, boundaries match but symbols do not; C, symbols
match but boundaries to not. |
4-6
low-res (143 KB)
high-res (648 KB) |
Example of a field sheet. |
4-7
low-res (~180 KB each)
Part A
Part B
Part C
high-res (~800 KB each)
Part A
Part B
Part C |
Conventional and special symbols legend. |
4-8
low-res (77 KB)
high-res (397 KB) |
Location of place names. Only the uppermost of the three lakes is Lake
Lewis, and Rat Creek is the lower of the two branches. |
4-9
low-res (75 KB)
high-res (357 KB) |
The omission of a map unit boundary is a serious error, as in three
places in this sample. |
4-10
low-res (157 KB)
high-res (993 KB) |
Soil augers and tubes: A, screw or worm auger; B, barrel auger; C,
sampling tube; D, "Dutch" "mud" auger; E, peat sampler. |
| 4-11 |
A pickup truck with a power probe and a tool compartment mounted in the
back. Two sizes of probes and an extension rod are illustrated (No longer
available). |
| 4-12 |
A backhoe mounted on the rear of a small tractor (No longer available). |
| 4-13 |
A power auger mounted on a pickup truck (No longer available). |
4-14
low-res (102 KB)
high-res (576 KB) |
A hydraulic operated sampling tube mounted on a pickup truck. The
open-faced tube is in place. Hydraulic controls are at the right. |
4-15
low-res (114 KB)
high-res (587 KB) |
A hand-held map board with aerial photo base map in place. |
| 4-16 |
A metal cylinder used to carry large maps (No longer available). |
4-17
low-res (158 KB)
high-res (996 KB) |
Abney hand level with case. |
4-18
low-res (122 KB)
high-res (616 KB) |
An example of one type of all-terrain vehicle used for soil survey
operations in areas inaccessible to ordinary wheeled vehicles. |
No figures for this appendix.
No figures for this appendix.
| Figure |
Description |
A-1
low-res (274 KB)
high-res (1.29 MB) |
Interrow on harvested soybeans, 35 to 40 percent covered by crop
residue. Not compacted by traffic during harvest. Yellow object in photo is
5x2 cm in size. |
A-2
low-res (158 KB)
high-res (716 KB) |
Raindrop impact crust specimens from interrow which was compacted during
harvest. Object in photo is 1 cm in length. |
A-3
low-res (170 KB)
high-res (768 KB) |
Two subhorizons of the Ap horizon of Sharpsburg silty clay loam. The Ap1
(0-8 cm) has been mechanically bulked and the Ap2 (8-16 cm) has been
mechanically compacted. |
A-4
low-res (108 KB)
high-res (552 KB) |
Sketch map of the area between the Bakeoven and Condon pedons were
described and sampled. |
A-5
low-res (149 KB)
high-res (799 KB) |
Landscape of the Bakeoven-Condon complex mapping unit showing pattern of
mounds (Condon) and intermounds (Bakeoven). |
A-6
low-res (178 KB)
high-res (862 KB) |
Profile of Bakeoven very cobbly sandy loam. |
A-7
low-res (215 KB)
high-res (1.0 MB) |
Close-up photo of ground surface near sample pit for Bakeoven very
cobbly sandy loam component of Bakeoven-Condon complex. Yellow marker object
is 5x5x2 cm in size. |
A-8
low-res (144 KB)
high-res (685 KB) |
Sketch map of the area where the Lithic Haplargid pedon was described
and sampled. |
A-9
low-res (136 KB)
high-res (744 KB) |
Landscape of the Lithic Haplargid mapping unit. Orientation is southwest
to northeast. Shovel marks the sampling pit. |
A-10
low-res (181 KB)
high-res (854 KB) |
Profile of Lithic Haplargid. Scale is in centimeters. |
A-11
low-res (197 KB)
high-res (921 KB) |
Close-up of ground surface near sample pit for Lithic Haplargid. Yellow
marker in photo is 5x5x2 cm in size. |
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