Geologic Map Of Minnesota
The interpretation differs significantly from previous maps to reflect new data and accommodate scale. This map compiles new and previously published geologic mapping to show the surficial sediments in minnesota.
Cass County Board Extensive Geologic Survey Of Cass About Half
Howe 2000 mn dot mesozoic rocks 225 to 65 mya cretaceous rocks undivided dominantly marine sediments.
Geologic map of minnesota
. The survey works with state county and regional offices to set up geologic databases and provide technical guidance for water resource planning land management and mineral exploration policy energy system development. This map is a new construct that incorporates existing geologic maps where prior mappers had adequate ground control and new interpretations based on drill hole geophysical and unpublished data where they did not. In contrast to hobbs and goebel 1982 where map colors indicated provenance on this map unit colors refer to texture. Simplified description by c r.Shale and sandstone sedimentary and metamorphic rocks of the sioux quartzite formation early proterozoic rocks 2. Bedrock geologic map illustrating the main geologic regions of minnesota. Geologic map of minnesota two harbors sheet bedrock geology. In 2008 mgs converted the original linework to a shapefile format and added more descriptive fields based on the quaternary geology code.
Igneous bodies lie across the northern half of the state with intrusions throughout the northwest and basalts and other igneous rocks of the duluth complex and beaver bay complex from the midcontinent rift system bordering lake superior in the northeast. Current and historic created by the minnesota geological survey. Quaternary geology 1982 by h c. The digital file was created by scanning the 1 500 000 scale paper map and then converting the scanned image into an arc info polygon coverage.
Geologic map of minnesota simplified bedrock geology description of map units bedrock map based on data from the university of minnesota minnesota geological survey bedrock map of minnesota bedrock geology 1993 compiled by g b. It is a digital version of the minnesota geological survey state map series map s 1 geologic map of minnesota. It portrays our current geologic understanding of the temporal and geographic distribution of units within major precambrian terranes and of the phanerozoic strata. Minnesota geologic map data geologic units and structural features in minnesota provided as a gis database interactive map and web mapping service.
It investigates the geology of minnesota and provides basic public information on the geology of the state. The minnesota geological survey is a research and service arm of the newton horace winchell school of earth and environmental sciences at the university of minnesota. Green for diamicton interpreted to be till red orange for sand and gravel dominated sediments and blue for silt and clay. Minnesota geologic map data a gis database of geologic units and structural features in minnesota with lithology age data structure and format written and arranged just like the other states.
Minnesota geological survey 1982 geologic map of minnesota east central minnesota sheet bedrock geology. File geodatabase format was.
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