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In 1968, the Missouri Geological Survey (MGS) established the Operation Basement program to address three objectives: a) to obtain drill hole and underground mining data relative to the structure and composition of the buried Precambrian basement; b) to expand mapping in the Precambrian outcrop area and conduct research related to Precambrian geology and mineral resources; and c) to publish the results of the first two objectives in the Contribution to Precambrian Geology series (Kisvarsanyi, 1976). The database presented here represents the first of those objectives. It was originally compiled in close cooperation with exploration and mining companies operating in Missouri, who provided drillhole data, core and...
Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Adair County, Andrew County, Atchison County, Audrain County, Barry County, All tags...
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The data on this CD consist of geographic information system (GIS)coverages and tabular data on the geology of Early Proterozoic andArchean rocks in part of the Early Proterozoic Penokean orogeny.The map emphasizes metasedimentary and metavolcanic rocks that weredeposited along the southern margin of the Superior craton and werelater deformed during continental collision at about 1850 Ma. Thearea includes the famous iron ranges of the south shore region ofthe Lake Superior district. Base maps, both as digital rastergraphics (DRG) and digital line graphs (DLG) are also provided forthe convenience of users. The map has been compiled from manyindividual studies, mostly by USGS researchers, completed during thepast...
Tags: 1100 - Geology, 1101 - General, 26003 = Alger, 26013 = Baraga, 26043 = Dickinson, All tags...


    map background search result map search result map Digital Geologic Map of the Penokean Continental Margin, Northern Michigan and Wisconsin Operation Basement: Missouri Precambrian Sample Database Digital Geologic Map of the Penokean Continental Margin, Northern Michigan and Wisconsin Operation Basement: Missouri Precambrian Sample Database