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Filters: Tags: {"scheme":"https://www.sciencebase.gov/vocab/category/NGGDPP/nggdpp_collection_types"} (X) > Date Range: {"choice":"month"} (X) > Types: OGC WMS Layer (X) > Categories: Data (X)

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This collection consists of written descriptions of lithologies encountered during the drilling phase of various coal exploration programs in Tennessee. Descriptions range from detailed to brief. Information obtained primarily from diamond core drilling with additional information from rotary drilling and e-logs. Drill hole depths range from tens to thousands of feet deep. Individual drill holes were originally located by using the Tennessee State Plane Coordinate System (NAD 27). Quadrangles with abundant drill holes have accompanying drill hole location maps.
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Geoscientific collections managed by Washington Geological Survey are aggregated in the National Digital Catalog to enhance discovery and use of valuable samples and data for further scientific research. Contact information and material access instructions are provided for the individual collections.


    map background search result map search result map Washington State Geological Survey Collection of Coal Exploration Logs from Tennessee Collection of Coal Exploration Logs from Tennessee Washington State Geological Survey