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Geologic history
Record (and inferred reconstruction) of the origin and development of the earth since its formation.
Subtopics:
Biostratigraphy (9 items)
Earth history (3 items)
Lithostratigraphy (2 items)
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Results 11 - 20 of 33 listed by similarity [list alphabetically]
Paleontology at the U.S. Geological Survey [New Window]
USGS Paleontology home page documenting the wide diversity in paleontologic studies and applications within the USGS.
America's volcanic past - volcanic highlights and features [New Window]
Links to volcanism, volcanic history, volcanic rocks, and general geology by state, by region, national parks and national monuments and a brief introduction to volcanism around the U.S. entitled: Windows into the past.
Core Research Center [New Window]
Overview of the Core Research Center (CRC) in Denver for preserving valuable rock cores for permanent storage and making the cores available for examination and testing. Includes links to services, well reports, and resources.
Crater Lake Data Clearinghouse [New Window]
The Crater Lake Data Clearinghouse website is a gateway to information and data on Crater Lake with links to data downloads of bathymetry, maps and imagery, a fly-by movie, photos, and information on geology, maps, history, and biota.
Diatoms: applications [New Window]
Use of diatoms in biostratigraphy, coastal and estuarine studies, paleoceanology, paleoliminology, earthquake studies, environmental quality and forensic studies. Includes listing of USGS diatom projects and links to other diatom websites.
Early Paleozoic biochronology of the Great Basin, western United States [New Window]
Publication (PDF format) in three parts on the biostratigraphy and lithostratigraphy of the Ibexian Series in the North American Ordovician, with sections on the southern Egan Range, Nevada and the biostratigraphy of the eastern Great Basin.
Extent of Pleistocene lakes in the western Great Basin [New Window]
Map of Pleistocene pluvial lakes in the western Great Basin (Nevada, eastern California, southern Oregon). Includes metadata, online PDF map view, and downloadable ArcInfo export files, ArcView shapefiles, and TIFF files.
Fossil groups: Vertebrates [New Window]
Information on vertebrate fossils and their use in paleontologic research in biostratigraphy, paleoclimatology, paleobiology, paleoecology, and earth history.
Fossils, rocks, and time [New Window]
Booklet describes how paleontologists use the identification of fossils to recognize rocks of the same or different ages.
Geochronology [New Window]
Description of the methods of geochronology used to estimate the dating of rocks and sediments with links to technique, equipment and contacts for a variety of methods.
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