Applicability of ERTS-1 to lineament and photogeologic mapping in Montana: Preliminary report

A lineament map prepared from a mosaic of western Montana shows about 85 lines not represented on the state geologic map, including elements of a northeast-trending set through central western Montana which merit ground truth checking and consideration in regional structural analysis. Experimental f...

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Hauptverfasser: Weidman, R. M., Alt, D. D., Flood, R. E., Hawley, K. T., Wackwitz, L. K., Berg, R. B., Johns, W. M.
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creator Weidman, R. M.
Alt, D. D.
Flood, R. E.
Hawley, K. T.
Wackwitz, L. K.
Berg, R. B.
Johns, W. M.
description A lineament map prepared from a mosaic of western Montana shows about 85 lines not represented on the state geologic map, including elements of a northeast-trending set through central western Montana which merit ground truth checking and consideration in regional structural analysis. Experimental fold annotation resulted in a significant local correction to the state geologic map. Photogeologic mapping studies produced only limited success in identification of rock types, but they did result in the precise delineation of a late Cretaceous or early Tertiary volcanic field (Adel Mountain field) and the mapping of a connection between two granitic bodies shown on the state map. Imagery was used successfully to map clay pans associated with bentonite beds in gently dipping Bearpaw Shale. It is already apparent that ERTS imagery should be used to facilitate preparation of a much needed statewide tectonic map and that satellite imagery mapping, aided by ground calibration, provides and economical means to discover and correct errors in the state geologic map.
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title Applicability of ERTS-1 to lineament and photogeologic mapping in Montana: Preliminary report
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