Mesozoic tectonic features of the Floridan Plateau basement
Abstract
Digitally-filtered Bouguer gravity anomaly maps of the Floridan Plateau delineate the Mesozoic extensional basins in the southwestern half of the plateau and suggest modification of existing basement models. The extension into Florida of the Triassic South Georgia Rift is marked by a gravity low and appears to have small ancillary rift basins paralleling its southeastern border. The Jurassic Apalachicola, Tampa, and South Florida Basins are delineated by positive anomalies, possibly attributable to the emplacement of hypabyssal rocks, and are separated by the negative anomalies of the Middle Ground and Sarasota Arches. The Tampa Basin is more aerially extensive than shown on previous basement maps, extending from the Jay Fault zone to the western edge of the plateau. The South Florida Basin is likely comprised of three separate NW-trending grabens sharing a common northwestern boundary. Existing seismic reflection profiles provide a characterization of some of the boundaries of these features. All of them, with the possible exception of the Apalachicola Basin, are bounded by the Jay Fault zone, a probable Paleozoic right-lateral strike-slip zone, segments of which were reactivated during the Mesozoic to accommodate differential vertical movement related to extension.
- Authors:
-
- Univ. of Florida, Gainesville, FL (United States). Dept. of Geology
- Publication Date:
- OSTI Identifier:
- 6078353
- Report Number(s):
- CONF-9304188-
Journal ID: ISSN 0016-7592; CODEN: GAAPBC
- Resource Type:
- Conference
- Journal Name:
- Geological Society of America, Abstracts with Programs; (United States)
- Additional Journal Information:
- Journal Volume: 25:4; Conference: 42. annual Geological Society of America (GSA) Southeastern Section meeting, Tallahassee, FL (United States), 1-2 Apr 1993; Journal ID: ISSN 0016-7592
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 58 GEOSCIENCES; FLORIDA; GEOLOGIC FORMATIONS; TECTONICS; BASEMENT ROCK; GEOLOGIC FAULTS; GEOLOGIC MODELS; GRAVITY SURVEYS; MESOZOIC ERA; RIFT ZONES; SEDIMENTARY BASINS; SEISMIC SURVEYS; DEVELOPED COUNTRIES; GEOLOGIC AGES; GEOLOGIC FRACTURES; GEOLOGIC STRUCTURES; GEOPHYSICAL SURVEYS; NORTH AMERICA; SURVEYS; USA; 580000* - Geosciences
Citation Formats
Lord, K M. Mesozoic tectonic features of the Floridan Plateau basement. United States: N. p., 1993.
Web.
Lord, K M. Mesozoic tectonic features of the Floridan Plateau basement. United States.
Lord, K M. 1993.
"Mesozoic tectonic features of the Floridan Plateau basement". United States.
@article{osti_6078353,
title = {Mesozoic tectonic features of the Floridan Plateau basement},
author = {Lord, K M},
abstractNote = {Digitally-filtered Bouguer gravity anomaly maps of the Floridan Plateau delineate the Mesozoic extensional basins in the southwestern half of the plateau and suggest modification of existing basement models. The extension into Florida of the Triassic South Georgia Rift is marked by a gravity low and appears to have small ancillary rift basins paralleling its southeastern border. The Jurassic Apalachicola, Tampa, and South Florida Basins are delineated by positive anomalies, possibly attributable to the emplacement of hypabyssal rocks, and are separated by the negative anomalies of the Middle Ground and Sarasota Arches. The Tampa Basin is more aerially extensive than shown on previous basement maps, extending from the Jay Fault zone to the western edge of the plateau. The South Florida Basin is likely comprised of three separate NW-trending grabens sharing a common northwestern boundary. Existing seismic reflection profiles provide a characterization of some of the boundaries of these features. All of them, with the possible exception of the Apalachicola Basin, are bounded by the Jay Fault zone, a probable Paleozoic right-lateral strike-slip zone, segments of which were reactivated during the Mesozoic to accommodate differential vertical movement related to extension.},
doi = {},
url = {https://www.osti.gov/biblio/6078353},
journal = {Geological Society of America, Abstracts with Programs; (United States)},
issn = {0016-7592},
number = ,
volume = 25:4,
place = {United States},
year = {Mon Mar 01 00:00:00 EST 1993},
month = {Mon Mar 01 00:00:00 EST 1993}
}