Bedrock geologic units, faults, and MRDS mineral deposit records for the area

Geologic units and structural features, GIS data files

Geospatial data and tabular data on the geology, structure, mines and mineral deposits, including lithology, age, tectonic setting, and stratigraphy.

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.

Explains how and where manganese resources form and concentrate and how they are used and interact with the environment to affect human and ecosystem health. Discusses supply and demand trends and where undiscovered sources of manganese might be found.

Manganese is used to make steel, where it serves as a purifying agent in iron-ore refining and as an alloy.

The U.S. Geological Survey (USGS) conducted a program of bedrock geologic mapping in much of the central and western Upper Peninsula of Michigan from the 1940s until the late 1990s. Geologic studies in this region are hampered by a scarcity of bedrock exp

Rock outcrop locations taken from geologic maps published from the 1940s until the late 1990s. Bedrock exposure locations were routinely recorded to provide both an indication of where direct observations were made, and as a guide for future investigations to expedite location of observable rock exposures. Data are provided in shapefile format.

Scanned image of map drawn at 1:5,000,000 scale, projection probably Lambert Conformal Conic, monochrome.

Analyses to establish the background and baseline geochemistry for bedrock and soil in the region, and to determine terrestrial mercury sources and sinks in the park

Geochemical analyses conducted as part of a larger study of the Midcontinent Rift in the Lake Superior region.

This Report provides digital data (shapefiles and .e00 files) for the bedrock geology in the Port Wing, Solon Springs, and parts of the Duluth and Sandstone quadrangles in Wisconsin.

Spreadsheets containing geochemical data for soils

Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km.

Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km.

Interactive web site showing geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801

Geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801

Geologic units, structural features, drill hole locations, and structure contours

Information related to amphibole and other minerals in order that commercial, regulatory, and other entities may obtain a better understanding of their impact on potential resource development. Data are provided in Microsoft Excel CSV, annotated PDF reports including microphotographs and analytical results, and JPEG formats.

Between 2007 and 2013, the U.S. Geological Survey conducted a low-density (1 site per 1,600 square kilometers, 4,857 sites) geochemical and mineralogical survey of soils in the conterminous United States. The sampling protocol for the national-scale surve

Rock physical property measurements to help understand causative sources of gravity and magnetic survey anomalies in this area. Data are provided in CSV format.

Weight percent of 15 mineral groups from 331 samples, geochemical analyses of 58 major and trace-element chemical species from 502 samples taken at 175 sites, along with data from geochemical reference standards and analyses of splits.