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Geologic history
Record (and inferred reconstruction) of the origin and development of the earth since its formation.
This category is also used for geohistory, and chronostratigraphy.
Subtopics:
Biostratigraphy (1 items)
Lithostratigraphy (4 items)
Related topics:
Results 1 - 13 of 13 listed by similarity [list alphabetically]
Geologic and geophysical framework of the Santa Rosa 7.5' quadrangle, Sonoma county, California [New Window]
Geologic units, structural features, magnetic and gravity anomaly contours and radiometric ages of this area
Preliminary bedrock geologic map of the Seward Peninsula, Alaska, and accompanying conodont data [New Window]
Digital geologic map information with a consistent set of attributes, part of a national compilation of similar maps. Available in formats compatible with GIS.
Geochronology and geology of late Oligocene through Miocene volcanism and mineralization in the western San Juan mountains, Colorado [New Window]
New age determinations with descriptions of sample locations and analytical details.
Geochronology Database for Central Colorado [New Window]
Compilation of isotopic and fission track age determinations, some previously published. Data for the tephrochronology of Pleistocene volcanic ash, carbon-14, Pb-alpha, common-lead, and U-Pb determinations on uranium ore minerals are not included.
Geology and resource assessment of the Venezuelan Guayana Shield at 1:500,000 scale [New Window]
Mineral resource assessment of the Venezuelan Guayana Shield, including geologic unit map
Geology of the conterminous United States [New Window]
A digital version of the Geologic Map of the United States, originally published at a scale of 1:2,500,000 (King and Beikman, 1974b). It excludes Alaska and Hawaii.
Isotopic ages of rocks in the northern Front Range, Colorado [New Window]
Maps, tables, and GIS data for isotopic ages determined in the northern part of the study area.
PDF Map showing extent of glaciation in the Eagle quadrangle, east-central Alaska [New Window]
This map covers the Eagle 1:250,000-scale quadrangle in the northeastern part of the Yukon-Tanana Upland in Alaska. It shows the extent of five major glacial advances, former glacial lakes, and present fragmented terrace deposits related to the advances.
Methods to create GIS styles with examples for lithology and time [New Window]
Methods used to create several styles for lithology or geologic time, including style files for Lithclass lithologic categories, and ISC and DNAG timescales.
National Geochronological Database [New Window]
Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.
National Geochronological Database [New Window]
Radiometric ages of geological materials by K-Ar, Rb-Sr, Sm-Nd, fission track, and U-Th-Pb dating methods. A revision of DDS-14 correcting locations and providing the data in more convenient formats.
PDF Provisional zircon and monazite uranium-lead geochronology for selected rocks from Vermont [New Window]
Results of zircon and monazite U-Pb geochronologic analyses of 24 rock samples collected from mapped exposures identified while conducting new, detailed (1:24,000-scale) geologic or reconnaissance geologic mapping for the new state map of Vermont.
XLS Uranium-lead zircon ages and Sr, Nd, and Pb isotope geochemistry of selected plutonic rocks from western Idaho [New Window]
U-Pb geochronology and isotopic studies of select plutons across the Salmon River suture in western Idaho.

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