Bathymetry and geology of Pourtales Terrace, Florida

Jordan, G. F.; Malloy, Richard J.; Kofoed, John W.

doi:10.1016/0025-3227(64)90063-5

Cited by 33 publications

(6 citation statements)

References 3 publications

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“…"The present position of the t e r r a c e must have been accomplished by post-Miocene 'down-warping and rapid drowning after the last glacial advance." (Jordan et at., 1964) If the sinkholes a r e caused by submarine discharge rather than having been subaerial formation, the need f o r postulating rapidly oscillating movements of the continental margin (a minimum of 150 m downwarping since the Pleistocene glacial maximum) wouldbe eliminated. In view of the phenomena described on the Blake Plateau and the suitable water-bearing formations below the Miocene strata, the probability appears strong that the depressions were formed by submarine discharge.…”

Section: 'mentioning

confidence: 99%

SECTION OF GEOLOGICAL SCIENCES: EVIDENCE FOR SUBMARINE DISCHARGE OF WATER ON THE ATLANTIC CONTINENTAL SLOPE OF THE SOUTHERN UNITED STATES, AND SUGGESTIONS FOR FURTHER SEARCH*,†

Manheim¹

1967

Trans NY Acad Sci

110

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Section: 'mentioning

confidence: 99%

SECTION OF GEOLOGICAL SCIENCES: EVIDENCE FOR SUBMARINE DISCHARGE OF WATER ON THE ATLANTIC CONTINENTAL SLOPE OF THE SOUTHERN UNITED STATES, AND SUGGESTIONS FOR FURTHER SEARCH*,†

Manheim¹

1967

Trans NY Acad Sci

110

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“…Late Miocene and Pliocene siliciclastics derived from the southeastern U.S. formed a bathymetric template for deposition of the Quaternary carbonate shelf and shelf margin (Jordan et al 1964;Ginsburg et al 1989;Warzeski et al 1996). The timing and mechanism for long-distance transport of these quartzose sediments across the carbonate Florida Platform has This article is a U.S. government work, and is not subject to copyright in the United States.…”

Section: Introductionmentioning

confidence: 99%

Interplay of Late Cenozoic Siliciclastic Supply and Carbonate Response on the Southeast Florida Platform

Cunningham¹,

Locker²,

Hine³

et al. 2003

Journal of Sedimentary Research

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“…The first detailed investigation of the physiography of the continental margin was that of Veatch and Smith (1939), who used soundings collected during hydrographic surveys by the U.S. Coast and Geodetic Survey to compile a series of charts frmn Block Island to Cape Henry, Va.. Later, Murray (1947) described the topography of the western boundary of the Gulf of Maine, and Jordan and Stewart (1961) and Jordan, Malloy, and Kofoed (1964) the topography south of the Florida Keys. These investigations were based on hydrographic surveys hy the U.S. Coast and Geodetic Survey.…”

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confidence: 99%

Atlantic Continental Shelf and Slope of the United States - Physiography

Uchupi¹

1968

Professional Paper

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The continental margin from Nova Scotia to the Florida Keys exhibits a variety of physiographic forms. On the basis of surface morphology it can be divided into three zones. In the northern zone, the continental shelf extending from Nova Scotia to Nantucket Island, has broad basins separated by shallow flat-topped banks, undulating swells, and irregularly crested ridges; some of the basins reach depths greater than 200 meters. This type of shelf topography is characteristic of shelves off glaciated areas and terminates at or near the southern limit of Pleistocene glaciation. Seaward of the shelf most of the continental slope is deeply entrenched by submarine canyons. At the foot of the slope is a large sedimentary apron known as the continental rise. The central zone from Nantucket Island to Cape Lookout also consists of continental shelf, slope, and rise. Although smoother than in the northern zone, the surface of the shelf is disrupted by sand swells, channels, coral mounds, and terraces. Most of these features may be related to lower stands of sea level during the Pleistocene. The continental slope in this zone is as deeply entrenched by submarine canyons as the slope in the northern zone. The continental rise seaward of the continental slope is similar to that in the northern zone. The continental margin in the southern zone from Cape Lookout to the Florida Keys is more complicated than the areas farther north. The continental slope is relatively smooth and has gradients as high as 20°-five times steeper than the slope farther north. The area landward of the slope does not consist of a simple continental shelf as it does farther north but instead consists of a shelf, a marginal plateau (the Blake Plateau), a trough (the Straits of Florida), and the Bahama Banks. In this sector of the continental margin, the topographic position occupied by the continental rise farther north is occupied by the broad flat-bottomed Blake Basin and Blake Ridge. East of Nantucket Island, topographic differences are believed to be due to glacial erosion, which has deepened the normal shallow shelf; south of Cape Lookout, they are believed to be due to folding or faulting, erosion by the Gulf Stream, and calcareous accretion.

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Bathymetry and geology of Pourtales Terrace, Florida

Cited by 33 publications

References 3 publications

SECTION OF GEOLOGICAL SCIENCES: EVIDENCE FOR SUBMARINE DISCHARGE OF WATER ON THE ATLANTIC CONTINENTAL SLOPE OF THE SOUTHERN UNITED STATES, AND SUGGESTIONS FOR FURTHER SEARCH*,†

SECTION OF GEOLOGICAL SCIENCES: EVIDENCE FOR SUBMARINE DISCHARGE OF WATER ON THE ATLANTIC CONTINENTAL SLOPE OF THE SOUTHERN UNITED STATES, AND SUGGESTIONS FOR FURTHER SEARCH*,†

Interplay of Late Cenozoic Siliciclastic Supply and Carbonate Response on the Southeast Florida Platform

Atlantic Continental Shelf and Slope of the United States - Physiography

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