General Setting
Information Search and Selection

Com ments

on

Geo logic

Para meters

1 Depth:

2 Permeability/Hydraulic Conductivity:

3 Formation Thickness:
4 Net Sand Thickness:
5 Percent Shale:
6 Continuity:
7 Top Seal Thickness:
8 Continuity of top seal:
9 Hydrocarbon Production:
10 Fluid Residence Time:
11 Flow Direction Elevation:

12

CO2 Solu bility Brine

 12a Temperature:
12b Pressure:
12c Salinity:
13 Rock/Water Reaction:
14 Porosity:
15 Water Chemistry:
16 Rock Mineralogy:

Jasper Interval, East Texas Gulf Coast

Comments on Geologic Parameters

7 Top Seal Thickness:

A number of studies have identified the upper portion of the Lagarto Formation as a laterally continuous shale known as the Amphistegina Shale (Galloway and others, 1986) or the Burkeville confining system (Baker, 1979, 1986). The Burkeville confining system is deep-water shale that was deposited during a eustatic rise in sea level, and therefore it is laterally continuous and generally homogeneous. The thickness isopach of the Burkeville confining system of Baker (1986) was selected and gridded (c7jasper) for use in the GIS because Baker mapped the area to characterize hydrogeologic characteristics of the subsurface.

7 Map:

7 Reference:

Baker, E. T., Jr., 1986, Hydrology of the Jasper Aquifer in the southeast Texas coastal plain: Texas Water Development Board, Report 295, 64 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.

Galloway, W. E., Jirik, L. A., Morton, R. A., and Dubar, J. R., 1986, Lower Miocene (Fleming) depositional episode of the Texas coastal plain and continental shelf: structural framework, facies, and hydrocarbon resources: The University of Texas at Austin, Bureau of Economic Geology Report of Investigations No. 150, 50 p.