Updating the Hydrogeologic Framework for the Northern Portion of the Gulf Coast Aquifer Page: VII
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Final Report- Updating the Hydrogeologic Framework for the Northern Portion of the Gulf Coast Aquifer
Figure 2-22 Positions of principal fluvial-deltaic depocenters and interdeltaic
shorelines for selected depositional episodes, northwest GOM. Modified
from Galloway (1989b) and Galloway and others (2000) ................................. 2-34
Figure 2-23 Chronostratigraphic chart of Miocene to Holocene depositional episodes,
northw est G O M ............................................................................................... 2-35
Figure 3-1 Geologic map of the Texas Coastal Plain. Source: Barnes (1992).................. 3-16
Figure 3-2 Schematic dip cross section showing relationships between outcropping
formations and subsurface stratigraphy, central coastal plain, Texas.
M odified from D oering (1956) ........................................................................ 3-17
Figure 3-3 Schematic cross section of lower Miocene stratigraphy showing
depositional sequences and lithostratigraphic and biostratigraphic
boundaries. Source: Galloway and others. (1986)........................................... 3-17
Figure 3-4 Net-sandstone isopach map of the Oakville Formation also showing
depositional systems. Red dotted line separates updip fluvial systems
from downdip delta and shore-zone systems. Modified from Galloway
and others. (1986).............................................................................................. 3-18
Figure 3-5 Net-sandstone isopach map of the Lagarto Formation also showing
depositional systems. Red dotted line separates updip fluvial systems
from downdip delta and shore-zone systems. Modified from Galloway
and others. (1986)..............................................................................................3-18
Figure 3-6 Schematic cross section of middle-upper Miocene stratigraphy showing
depositional sequences and lithostratigraphic and biostratigraphic
boundaries. From M orton and others. (1988) ................................................. 3-19
Figure 3-7 Percent sandstone maps of Goliad and equivalent middle-upper Miocene
sequences. From Hoel (1982) and Morton and others, (1988) ........................ 3-20
Figure 3-8 Sand percent map of the Willis Formation, southeast Texas and south
Louisiana. M odified from W eiss (1992)........................................................... 3-21
Figure 3-9 Sand percent map of the Lissie Formation, southeast Texas and south
Louisiana. M odified from W eiss (1992)........................................................... 3-21
Figure 3-10 Simplified map of surface sediment types covering Matagorda County to
the Louisiana border showing Pleistocene (Beaumont Formation) and
Holocene deposits. Modified from Fisher and others (1972, 1973) and
M cGowen and others (1976a,b)........................................................................ 3-22
Figure 4-1 Idealized SP and resistivity curve showing the responses corresponding to
alternating sand and clay strata that are saturated with groundwater that
has significant increases in total dissolved concentrations with depth.
M odified from D riscoll (1986) ......................................................................... 4-9
Figure 4-2 Schematic showing the location of the Kelly Bushing relative to the
ground level and the oil rig ............................................................................. 4-10
Figure 4-3 Example of a geophysical well log that uses the American Petroleum
Institute form at............................................4-10
Figure 4-4 Location of the approximately 800 logs used to characterize the
stratigraphy and lithology of the northern portion of the Gulf Coast
A quifer System ...............................................................................................4-11vii
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Young, Steven C.; Ewing, Tom; Hamlin, Scott; Baker, Ernie & Lupton, Daniel. Updating the Hydrogeologic Framework for the Northern Portion of the Gulf Coast Aquifer, report, June 2012; Austin, Texas. (https://texashistory.unt.edu/ark:/67531/metapth542209/m1/9/?q=%22~1~1~1~1%22~1: accessed July 16, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu.; crediting UNT Libraries Government Documents Department.