Collections
We currently house more than 250,000 feet of core samples from over 1100 oil and gas, mineral test and environmental
study wells. Cores are from 62 of 68 Lower Peninsula Counties and 2 of 15 Upper Peninsula Counties. Core sample depths
range from unconsolidated glacial material and bedrock at the surface to PreCambrian basement at more than 15,000 feet.
There are also about 14,000 boxes of drill cuttings samples from more than 6200 wells, mostly from Lower Peninsula
counties. About 40% of the cuttings sets are mounted on strip logs for ease of viewing. The rest are washed and
stored in sand sample envelopes in 10 foot drilled intervals.
There are over 2500 rock and drill cuttings thin sections from about 200 Michigan wells.
We also maintain a collection of surface outcrop samples from most of Michigan's Paleozoic sedimentary
rock formations. These samples are from natural outcrops and quarries in the Lower Peninsula and Eastern Upper Peninsula.
Data Sets
Extensive data sets relating to Michigan wells and subsurface geology are archived at the MGRRE facility.
Historic maps, well logs, well reports, geochemical data, core reports, engineering well tests and mudlogs are available
to be view as hard copy. Some well data has been converted to digital format, including core analyses, some geochemical
and engineering test data.
