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Igneous rocks
Rocks formed from melted rock that has cooled and solidified.
Subtopics:
Volcanic rocks (5 items)
Plutonic rocks (9 items)
Related topics:

Results 1 - 16 of 16 listed by similarity [list alphabetically]
PDF Complete analytical data for Jurassic igneous rocks in the Bald Mountain mining district, Nevada [New Window]
Petrographic and geochemical analyses of 50 outcrop samples and 58 drill core samples.
Distribution of igneous rocks in Medina and Uvalde counties, Texas, as inferred from aeromagnetic data [New Window]
High resolution aeromagnetic survey used to infer the locations of igneous rock bodies in the area, which are provided in GIS data files
Net acid production, acid neutralizing capacity, and associated mineralogical and geochemical characteristics of Animas River watershed igneous rocks near Silverton, Colorado [New Window]
Chemical analysis of altered volcanic rocks to determine their potential for neutralization of acid-rock drainage. Includes magnetic susceptibility measurements as well.
A geochemical isotopic (Nd-Pb) comparison of volcanic rocks erupted during the last 3,550 yrs. B.P. of interplinian activity of Somma-Vesuvius Volcano, southern Italy [New Window]
Nd and Pb isotopic analyses from stratigraphic sampling from Somma-Vesuvius volcanic complex, Italy, during the last 3550 years point to contributions from heterogeneous lithosphere, continental crust, and magma mixing.
Cretaceous magmatic rocks of Alaska [New Window]
Data derived from the 1994 map "Latest Cretaceous and Cenozoic magmatic rocks of Alaska" compiled by E.J. Moll-Stalcup, D.A. Brew, and T.L. Vallier, published (at 1:2,500,000 scale) in volume G-1 of "The Geology of Alaska" (GSA)
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.
Bedrock geologic map of the Ashland and the northern part of the Ironwood 30 min X 60 min quadrangles, Wisconsin and Michigan [New Window]
Bedrock Geologic Map of the Port Wing, Solon Springs, and Parts of the Duluth and Sandstone 30' X 60' Quadrangles, Wisconsin [New Window]
Geochemical database for the Boulder Batholith and its satellitic plutons, southwest Montana [New Window]
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 [New Window]
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
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.
Mapping the mineral resource base for mineral carbon-dioxide sequestration in the conterminous United States [New Window]
Map includes GIS data for magnesium-rich ultramafic rocks
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 [New Window]
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.
National Geochemical Database: Rock [New Window]
Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"
Porphyry copper deposits of the world; database and grade and tonnage models, 2008 [New Window]
Revised and updated information about mineral deposit models for porphyry copper deposits to facilitate assessment of undiscovered resources
Preliminary digital geologic map of the Penokean (early Proterozoic) continental margin in northern Michigan and Wisconsin [New Window]
This map portrays the geology of Early Proterozoic rocks deposited along the southern margin of the Archean Superior craton during the Penokean orogenic cycle in northern Michigan and Wisconsin.

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