Port O'Connor Quadrangle, Texas. Digital Download

OFM0224D. Geologic Map of the Port O'Connor Quadrangle, Texas Gulf of Mexico Coast, by J. G. Paine and E. W. Collins. Oversize color geologic map on a topographic base, map scale 1:24,000, and sheet 2, Geophysical logs and time-domain electromagnetic induction soundings, 2016. Downloadable PDF. For paper map: OFM0224.

About This Map
This map illustrates the geology at the western margin of Matagorda Bay and the recently established Texas Parks and Wildlife Powderhorn Ranch conservation area. The area’s geology consists of sediments deposited within a Pleistocene barrier system and Holocene bay-estuary and barrier systems. The map illustrates Pleistocene units that represent four phases of Ingleside barrier deposition and compose much of the map area. The map also displays Holocene bay margin–beach, tidal-flat, and spit deposits. Man-made features identified include selected channels, pits, dredged-material disposal areas, selected areas artificially elevated by fill material, and jetties. Subsurface data are displayed in sheet 2: Geophysical logs and time-domain electromagnetic induction soundings.


Citation
Paine, J. G., and Collins, E. W., 2016, Geologic Map of the Port O'Connor Quadrangle, Texas Gulf of Mexico Coast: The University of Texas at Austin, Bureau of Economic Geology, Open-File Map No. 224, map scale 1:24,000.