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Open-File Reports  [115]

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OFR19-02, Geochemical Analysis of Till From Minnesota Drill Cores

Thorleifson, L.H.; Conrad, D.R.; Staley, A.E. (Minnesota Geological Survey, 2019)
Compositional analysis of texture and very coarse sand lithology have been used to support characterization of till properties, and interpretation of correlation, process, and provenance. In 2007, results were released for ...

OFR18-03, Core Descriptions, Borehole Geophysics, and Unit Interpretations in Support of Phase I and II USGS Hydrologic Properties of Till Investigation

Staley, Amie E; Wagner, Kaleb; Nguyen, Maurice; Tipping, Robert (Minnesota Geological Survey, 2018)
This report summarizes the contributions of the Minnesota Geological Survey (MGS) to a three-year study conducted in two phases – Environmental and Natural Resources Trust Fund (ENRTF), M.L. 2014, Chp. 226, Sec. 2, Subd. ...

OFR19-1, Geologic Mapping Forum 2019 Abstracts

Thorleifson, L H (Minnesota Geological Survey, 2019)
At the Geologic Mapping Forum in Minneapolis from April 10th to 12th, 2019, ~100 geological map authors, program managers and allied professionals from geological surveys and associated agencies met to discuss the status ...

OFR07-06, Upgrade of Aeromagnetic Databases and Processing Systems at the Minnesota Geological Survey

Chandler, Val W (Minnesota Geological Survey, 2007)
During 2005-2007 a program to upgrade the aeromagnetic database for Minnesota was conducted by the Minnesota Geological Survey (MGS). Most of the Minnesota aeromagnetic data were acquired during a 1979-1991 state-wide survey ...

OFR18-02, Stratigraphic Positions of Springs in Southeast Minnesota

Steenberg, Julia R; Runkel, Anthony C (Minnesota Geological Survey, 2018)
Springs are places where groundwater is returned naturally to the surface and are a place to study the state of the groundwater in the aquifer system. In southeast Minnesota, springs are outlets in a conduit flow system ...

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