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Bureau of Economic Geology
10100 Burnet Rd. Bldg. 130
Austin
TX
78729
US
8-5
20230328
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1.0
BEG
10100 Burnet Rd. Bldg 139
Austin
Texas
78758
US
File Geodatabase Feature Class
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Cedar Keys and Lawson Dolomites Top Seal Thickness
Isopach (thickness) maps of confining zone
Publication Date: 2012
Geographic Extent: Central Florida
Top-seal thickness. The top seal for the lower Cedar Keys and Lawson Dolomites is the middle Cedar Keys Formation. This unit is composed of massively bedded anhydrite, and it is the lower confining unit for the Floridan aquifer in southern Florida (Miller, 1986). A lithologic well log from Mulberry, Polk County, Florida, reports that this anhydrite-rich unit is 670 ft thick. Cross 73 sections by Miller (1986), which span southern Florida, indicate that this confining unit is as much as 1,000 ft thick. We use GIS technology to combine the Cedar Keys Formation thickness and percent-anhydrite maps of Chen (1965) to derive an anhydrite-thickness map for the Cedar Keys. Winston (1994) also presented evaporite isolith maps of the middle Cedar Keys interval. We think that these anhydrites, which are more than 800 ft thick in places, would make a very effective top seal for sequestration of CO2 .
Havorka, S., Romero, M., Warne, A., Ambrose, W., Tremblay, T., Trevino, R., and Sasson, D. "Sequestration of Greenhouse Gassesin Brine Formations: CO2 Brine Database. Bureau of Economic Geology Gulf Coast Carbon Center. 2012. https://www.beg.utexas.edu/gccc/research/brine-main
Central Florida
Cedar Keys/ Lawson
United States
Florida
Cedar Keys
Cedar Keys and Lawson Dolomites Top Seal Thickness
Cedar Keys and Lawson Dolomites
Lawson Dolomites
Lawson
Dolomite
Top Seal Thickness
Top Seal
Thickness
Isopach
Polyline
Access constraints: Restriction Code: other restrictions; Other Constraints: Access constraints: None
Public access
Esri ArcGIS 13.0.0.36056
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