Filters: Tags: {"scheme":"https://www.sciencebase.gov/vocab/category/NGGDPP/nggdpp_collection_types"} (X) > Categories: Physical Item (X) > Types: OGC WFS Layer (X)
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Samples are collected by MGS staff at outcrops, from auger drill holes, and rotary sonic drill holes. Samples are processed by student technicians to determine sample texture (% gravel, sand, silt, and clay). Approximately 100-150 grams of original sample is stored in a packet along with subpackets of the gravel fraction, 1-2 mm sand fraction, and <2 mm sand fraction. All lab data are recorded on paper lab sheets stored in the lab. Technicians also enter data into the MGS lithological database. Grain count analyses have been completed by glacial geologists on somewhere between 25 and 50% of these samples. These results are also recorded on paper sheets and in the database.
Categories: Physical Item;
Types: Collection,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: ndc_collection
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