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By W. Burleigh Harris, Vernon J. Hurst, Paul G. Nystrom, Lauck W. Ward, Charles W. Hoffman, Sam M. Pickering, Lucille Kite Price, Ralph H. Willoughby, Victor A. Zullo(auth.)
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Published through the yank Geophysical Union as a part of the Field journey Guidebooks Series.
The Atlantic Coastal simple Province is a low-relief physiographic simple, underlain by means of a gently-dipping, seaward-thickening wedge of unconsolidated Mesozoic and Cenozoic sediments. The province extends from Cape Cod, Massachusetts to the northwestern extension of the Peninsular arch in Georgia and is separated into emergent and submergent elements. The emerged half, situated above sea point, is termed the Coastal simple, while the submerged half is the continental shelf. The jap boundary of the Coastal undeniable is the Atlantic shore and the western boundary or internal margin the autumn Line. the autumn Line marks the approximate touch among the underlying igneous and metamorphic rocks of the Piedmont Province and the commonly unconsolidated sediments of the Coastal simple. Coastal simple sediments comprise a list of lots of the higher Cretaceous and Cenozoic levels. those sediments achieve their greatest thickness within the Salisbury, Albermarle, and Southeast Georgia embayments, and skinny noticeably over the intervening South New Jersey, Norfolk, and Cape worry arches. This sequence of alternating basins and highs has produced a posh series of lithologic devices that change commonly on an area in addition to a local scale. Lithologic devices within the Coastal undeniable include siliciclastics and carbonates, with carbonates being extra considerable within the Southeast Georgia embayment. light deformation concerning reactivation ofearly Mesozoic grabens and half-grabens has affected a number of components of the stratigraphic part.
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Read or Download Upper Cretaceous and Cenozoic Geology of the Southeastern Atlantic Coastal Plain: Atlanta, Georgia to Chesapeake, Virginia July 1-9, 1989 PDF
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Additional resources for Upper Cretaceous and Cenozoic Geology of the Southeastern Atlantic Coastal Plain: Atlanta, Georgia to Chesapeake, Virginia July 1-9, 1989
Example text
Sloan (1908) and Cooke (1936) referred to the Barnwell formation some localities now recognized as the McBean Formation or upland unit (see below). Connell (1968) proposed as type locality for the Barnwell Formation an exposure near Barnwell, South Carolina that Cooke (1936) named as a reference locality but which Cooke and McNeil (1952) already had assigned to the Miocene Hawthorn Formation. Huddlestun and Hetrick (1979, 1986) reviewed the history of the Barnwell Group and rejected Connell's unsatisfactory locality.
Lithology. 5 Distribution of the Paleocene Lang Syne beds in the Coastal Plain of South Carolina. T172: 27 Upper Upper beds and underlie the lower middle Eocene Congaree Formation. We interpret the sharp lithologic break between the Sawdust Landing beds and the Lang Syne beds as the Danian-Thanetian unconformity and we regard the Lang Syne beds as a single depositional sequence, of upper Paleocene (Thanetian) age. The Thanetian age assignment of the Lang Syne beds is based on dinoflagellates collected by us and analyzed by Del Edelman.
Sloan (1904) described lignitic clays extending up the lower third of Hollow Creek and stated that they "constitute one of the basal members of the Eocene" which in modern usage translates as lower Paleocene. Our geologic mapping in the Congaree and Wateree river valleys (Kite, 1984a, 1Q84b, 1986, 1988a, 1988b; Nystrom, 1987, in progress; Nystrom and others, 1988; Willoughby, in progress) has led to the accurate delineation of two Paleocene map units. We use the informal terms Sawdust Landing beds and Lang Syne beds for the lower and upper units, respectively.