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Plutonic rocks

Rocks formed at considerable depth by crystallization of magma and/or by chemical alteration. They are characteristically medium- to coarse-grained, of granitoid texture.
This category is also used for intrusive rocks and magma.
Subtopics:
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Results listed by similarity [list alphabetically]
Uranium-lead zircon ages and Sr, Nd, and Pb isotope geochemistry of selected plutonic rocks from western Idaho

U-Pb geochronology and isotopic studies of select plutons across the Salmon River suture in western Idaho.

Geochronology and correlation of Tertiary volcanic and intrusive rocks in part of the southern Toquima Range, Nye County, Nevada

40Ar/39Ar dating, electron microprobe analyses and geologic mapping help clarify chronology and correlations of the numerous volcanic and intrusive units exposed in the area and interpret the petrogenesis of a few of the volcanic units.

Mesozoic magmatism and base-metal mineralization in the Fortymile mining district, eastern Alaska--Initial results of petrographic, geochemical, and isotopic studies in the Mount Veta area

Initial results of a petrographic, geochemical, and isotopic study of Mesozoic intrusive rocks and spatially associated Zn-Pb-Ag-Cu-Au prospects in the area.

Complete analytical data for Jurassic igneous rocks in the Bald Mountain mining district, Nevada

Petrographic and geochemical analyses of 50 outcrop samples and 58 drill core samples.

Alaska Geochemical Database (AGDB)-Geochemical data for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

Alaska Geochemical Database, v2

Geochemical analyses of rock, sediment, soil, mineral, and heavy mineral concentrate samples in Alaska analyzed from 1962 through 2009, with best-value estimates.

Alaska Geochemical Database, Version 2.0 (AGDB2)--including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

Bedrock geologic map of the Ashland and the northern part of the Ironwood 30 min X 60 min quadrangles, Wisconsin and Michigan

Bedrock geologic map of the Port Wing, Solon Springs, and parts of the Duluth and Sandstone 30 X 60 minute quadrangles, Wisconsin

Geochemical database for the Boulder Batholith and its satellitic plutons, southwest Montana

Geochemical analyses of Cretaceous igneous intrusions in order to establish the geologic framework for world-class mineral deposits of the Butte district

Geochemistry of rock samples collected from the Iron Hill carbonatite complex, Gunnison county, Colorado

A study conducted collected 57 surface rock samples from nine types of intrusive rock to reexamine the chemistry and metallic content of the major rock units of the Iron Hill complex

Geologic map of metallic and nonmetallic mineral deposits, Badakhshan Province, Afghanistan, modified from the 1967 original map compilation of G.G. Semenov and others

Province contains Weka Dur, see companion report chapter B. Reproduces the topology of original Soviet maps and cross sections. Original Russian terminology and rock classification translated into modern English geologic usage as literally as possible.

Geologic map of the Cook Inlet region, Alaska, including parts of the Talkeetna, Talkeetna Mountains, Tyonek, Anchorage, Lake Clark, Kenai, Seward, Iliamna, Seldovia, Mount Katmai, and Afognak 1:250,000-scale quadrangles

The map updates a major geologic map of the Cook Inlet region published in 1976 incorporating new and additional mapping and interpretation. This map is also a revision of areas of overlap with the geologic map completed for central Alaska.

Geology of the Prince William Sound and Kenai Peninsula region, Alaska

The region includes a significant part of one of the world’s largest accretionary complexes and a small part of the classic magmatic arc geology of the Alaska Peninsula. The map was compiled from existing mapping augmented by available new or revised data

Geophysical studies in the vicinity of Blue Mountain and Pumpernickel Valley near Winnemucca, north-central Nevada

Data from more than 660 gravity stations, 100 line-km of truck-towed magnetometer traverses, and 260 physical-property sites in this area.

Giant porphyry-related metal camps of the world

Database of large-tonnage, generally low-grade, hydrothermal deposits related to igneous intrusions emplaced at high crustal levels. Includes tri-partite classification based on deposit type, metal commodities, and source/host pluton chemistry.

Global Mineral Resource Assessment

Regional locations and estimates of the probable amounts of undiscovered resources of copper, platinum-group elements, and potash in selected types of mineral deposits to depths of 1 to 3 kilometers below the surface of the earth worldwide.

Global mineral resource assessment--porphyry copper assessment of Mexico

Includes known resources and permissive tracts with estimates of the number of undiscovered resources likely to be present in the permissive tracts.

Mapping the mineral resource base for mineral carbon-dioxide sequestration in the conterminous United States

Map includes GIS data for magnesium-rich ultramafic rocks

Podiform chromite deposits

Location and characteristics of 1,124 individual mineral deposits of this type, with grade and tonnage models for chromium as well as several related elements.

Podiform chromite deposits--database and grade and tonnage models

Location and characteristics of 1,124 individual mineral deposits of this type, with grade and tonnage models for chromium as well as several related elements.

Porphyry copper deposits of the world

Information on porphyry copper deposits from around the world with grade and tonnage models, a general classification based on geologic setting, mineralogy, with data allowing locations of these deposits to be plotted using GIS.

Porphyry copper deposits of the world: database, map, and grade and tonnage models

A compilation of worldwide mineral deposits of this type. This older version was revised and updated in OFR-2008-1155.

Porphyry copper deposits of the world: database, maps, and preliminary analysis

A compilation of worldwide mineral deposits of this type. This older version was revised and updated in OFR-2008-1155.

Porphyry copper deposits of the world; database and grade and tonnage models, 2008

Revised and updated information about mineral deposit models for porphyry copper deposits to facilitate assessment of undiscovered resources

Reconnaissance study of the Taylor Mountains pluton, southwestern Alaska

Major and trace element geochemistry for 10 rock samples whose locations are not specified, with data from Argon-Argon analysis supporting geochronological data.