Abstract:The structure and stratigraphy of the Florida-Hatteras Slope and inner Blake Plateau was studied by means of 4,780 km of single-channel air gun seismic reflection profiles. Control for the seismic stratigraphy is provided by correlating reflecting units and paleontologically dated stratigraphic units identified in offshore wells and dredge hauls. Many Tertiary unconformities exist, and major regional unconformities at the end of the Oligocene and in the late Paleocene are mapped. Reflecting surfaces believed t… Show more
“…Because Neogene to Holocene sediments are mainly unconsolidated to poorly consolidated, they interpreted these faults to be the consequence of sediment compaction or subsidence. Our most reliable observations of faulting occur within the late Paleocene depocenter defined by Paull and Dillon (1979), which tends to support the fault mechanisms suggested by Ball and others (1980). Nevertheless, existing data does not entirely preclude a tectonic origin because of the decrease in instrumental resolution with depth.…”
Section: Faulting Arid Seismicitysupporting
confidence: 90%
“…Stratigraphic tests indicate that the late Paleogene depocenter defined by Paull and Dillon (1979) approximates the locale of a gradual transition from predominantly marine carbonates in the south to marginal marine and marine elastics in the north. Marginal marine and marine elastics dominate the Neogene stratigraphic record in the study area.…”
Section: Regional Geologic Settingmentioning
confidence: 93%
“…The Southeast Georgia Embayment is estimated to contain a 2.8-to 5.5-km thick section of sedimentary rocks of which 0.6-1.1 km are Tertiary in age (Scott and Cole, 1975). Paull and Dillon (1979) noted two Cenozoic unconformities of regional significance on seismic-reflection profiles from the South Atlantic OCS. These acoustic unconformities bound a major Eocene/Oligocene depositional sequence and are the result of widespread erosion of the shelf during the late Paleocene and Oligocene.…”
Section: Regional Geologic Settingmentioning
confidence: 99%
“…Margin is summarized in Dillon and others (1975) and Paull and Dillon (1979). Oil and gas exploration targets for Lease Sale 43 occur within the principal structural feature in the area, the Southeast Georgia Embayment.…”
Section: Regional Geologic Settingmentioning
confidence: 99%
“…8). Paull and Dillon (1979) noted that Neogene deposition on the northern part of the shelf has been dominated by the influence of the Florida Current, which migrated repeatedly across the outer shelf and upper slope. Therefore, much of the extensive cut-and-fill in Area A is attributed to submarine rather than fluvial processes.…”
Section: Static Foundation Zone Conditionsmentioning
“…Because Neogene to Holocene sediments are mainly unconsolidated to poorly consolidated, they interpreted these faults to be the consequence of sediment compaction or subsidence. Our most reliable observations of faulting occur within the late Paleocene depocenter defined by Paull and Dillon (1979), which tends to support the fault mechanisms suggested by Ball and others (1980). Nevertheless, existing data does not entirely preclude a tectonic origin because of the decrease in instrumental resolution with depth.…”
Section: Faulting Arid Seismicitysupporting
confidence: 90%
“…Stratigraphic tests indicate that the late Paleogene depocenter defined by Paull and Dillon (1979) approximates the locale of a gradual transition from predominantly marine carbonates in the south to marginal marine and marine elastics in the north. Marginal marine and marine elastics dominate the Neogene stratigraphic record in the study area.…”
Section: Regional Geologic Settingmentioning
confidence: 93%
“…The Southeast Georgia Embayment is estimated to contain a 2.8-to 5.5-km thick section of sedimentary rocks of which 0.6-1.1 km are Tertiary in age (Scott and Cole, 1975). Paull and Dillon (1979) noted two Cenozoic unconformities of regional significance on seismic-reflection profiles from the South Atlantic OCS. These acoustic unconformities bound a major Eocene/Oligocene depositional sequence and are the result of widespread erosion of the shelf during the late Paleocene and Oligocene.…”
Section: Regional Geologic Settingmentioning
confidence: 99%
“…Margin is summarized in Dillon and others (1975) and Paull and Dillon (1979). Oil and gas exploration targets for Lease Sale 43 occur within the principal structural feature in the area, the Southeast Georgia Embayment.…”
Section: Regional Geologic Settingmentioning
confidence: 99%
“…8). Paull and Dillon (1979) noted that Neogene deposition on the northern part of the shelf has been dominated by the influence of the Florida Current, which migrated repeatedly across the outer shelf and upper slope. Therefore, much of the extensive cut-and-fill in Area A is attributed to submarine rather than fluvial processes.…”
Section: Static Foundation Zone Conditionsmentioning
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