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Jasper Interval, East Texas Gulf Coast Comments on Geologic Parameters 3 Formation Thickness: Although there is ample stratigraphic information on the Miocene interval in the Texas City area, a map showing the overall thickness distribution of the Fleming interval was surprisingly difficult to locate. Several maps show the interval-thickness distribution to the southwest and west of Texas City, and a number of subsurface cross sections are available through the Texas City area (Baker, 1979, 1986; Ambrose and others, 1990). The regional thickness map of the middle Miocene interval by Galloway and others (1991) was used because it provides the only available compilation of data currently available for the area. The isopach was coarsely gridded by using a 5-km cell size (c3jasper). 3 Map:
3 Reference: Ambrose,
W. A., 1990, Facies heterogeneity and brine-disposal potential of
Miocene barrier-island, fluvial, and deltaic systems: examples from
northeast Hitchcock and Alta Loma Fields, Galveston County, Texas:
The University of Texas at Austin, Bureau of Economic Geology, Geological
Circular 90-4, 35 p.
Baker, E. T., Jr., 1979, Stratigraphic and hydrogeologic framework of part of the coastal plain of Texas: Texas Department of Water Resources, Report 236, 43 p. ___________ 1986, Hydrology of the Jasper Aquifer in the southeast Texas coastal plain: Texas Water Development Board, Report 295, 64 p. Galloway, W. E., Bebout, D. G., Fisher, W. L., Dunlap, J. B., Jr., Cabrera-Castro, R., Lugo-Rivera, J. E., and Scott, T. M., 1991, Cenozoic, in Salvador, A., ed., The geology of North America, v. J. The Gulf of Mexico Basin: Geological Society of America, p. 245–324.
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