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OFM0232. Geologic Map of the Seadrift NE Quadrangle, Texas, by J. G. Paine and E. W. Collins. Oversize color maps on topographic base, 2 sheets, (sheet 1:
scale 1:24,000; sheet 2: digital-elevation model, geophysical logs, timedomain electromagnetic induction soundings, and frequency-domain
electromagnetic induction measurements), 2017. Paper map. For downloadable PDF: OFM0232D.
Keywords: maps, geologic maps, Seadrift NE quadrangle, Calhoun County, Texas
About This Publication
This map illustrates the geology at the southern margin of Powderhorn Lake and the western part of Powderhorn Ranch, a planned state park and wildlife management area near Port O’Connor. The area’s geology consists of sediments deposited within Pleistocene barrier and fluvial– deltaic systems and a Holocene bay–estuary system. Map units include Pleistocene barrier and deltaic deposits and Holocene bay margin and valley margin deposits.
Paine, J. G., and Collins, E. W., 2017, Geologic Map of the Seadrift NE Quadrangle, Texas: The University of Texas at Austin, Bureau of Economic Geology, Open-File Map No. 232, scale 1:24,000, 2 sheets.