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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 (5 items)
Lithostratigraphy (6 items)
Related topics:


Results 11 - 20 of 42 listed by similarity [list alphabetically]
National Cooperative Geologic Mapping Program [More info]
Geological mapping carried out by USGS in close cooperation with state, university, and federal partners. Includes general information about geological maps and mapping standards.
National Geologic Map Database Catalog [More info]
Search tool for locating print and online U.S. geologic maps by area, title, author, etc.
National Geologic Map Database Geologic Names Lexicon GEOLEX [More info]
Search tool for locating lithologic and geochronologic unit names for geologic studies.
Paleontology at the U.S. Geological Survey [More info]
USGS Paleontology home page documenting the wide diversity in paleontologic studies and applications within the USGS.
The Geologic Story of Colorado's Sangre de Cristo Range [More info]
Rock types, geologic structure, and the history of their formation in this mountain range.
The Geologic Time Spiral - A Path to the Past [More info]
Poster depicting the changes in the Earth and its life throughout its history.
America's volcanic past - volcanic highlights and features [More info]
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 [More info]
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 [More info]
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 [More info]
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.
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