Quaternary stratigraphy and sea-level history of the U.S. Middle Atlantic Coastal Plain

1992 ◽  
Vol 11 (3) ◽  
pp. 301-328 ◽  
Author(s):  
Marguerite A. Toscano ◽  
Linda L. York
Keyword(s):  
Sea Level ◽  
Coastal Plain ◽  
Atlantic Coastal Plain ◽  
Middle Atlantic ◽  
Quaternary Stratigraphy ◽  
History Of ◽  
Atlantic Coastal ◽  
The U.S ◽  
And Sea Level

Theoretical Correlations and Lateral Discontinuities in the Quaternary Aminostratigraphic Record of the U.S. Atlantic Coastal Plain

1992 ◽  
Vol 38 (3) ◽  
pp. 275-291 ◽  
Author(s):  
J. F. Wehmiller ◽  
L. L. York ◽  
D. F. Belknap ◽  
S. W. Snyder
Keyword(s):  
South Carolina ◽  
Sea Level ◽  
Coastal Plain ◽  
Late Quaternary ◽  
Atlantic Coastal Plain ◽  
Passive Margin ◽  
Temperature History ◽  
Cape Fear ◽  
Atlantic Coastal ◽  
The U.S

AbstractAminostratigraphic correlations of emergent Quaternary deposits along the U.S. Atlantic Coastal Plain have employed independent radiometric data, regional temperature history models, and assumptions regarding the nature of the preserved late Quaternary sea-level record on this passive margin. A substantial “aminostratigraphic offset” is required if regional aminozones are rigorously constrained by all available Th/U data. New insights regarding the relation of this offset to subsurface stratigraphy in the Cape Fear region of southeastern North Carolina can explain these conflicts as consequences of the highly incomplete post-Cretaceous depositional record of the region. Southward projection of theoretical aminostratigraphic correlation trends suggests that stage 5 correlative marine units are rarely preserved on the emergent portion of the Coastal Plain between Cape Lookout and central South Carolina and that samples of this age would be most frequently found in this region only as fragmentary (and/or reworked) deposits on the inner shelf or in the subsurface of modern barrier islands. If this hypothesis is correct, then the accuracy of several Th/U coral dates from the South Carolina Coastal Plain must be questioned, along with sea-level, tectonic, and paleoclimatic conclusions derived from these dates.

Late Cretaceous (Turonian-Coniacian) sequence stratigraphy, sea level, and deltaic facies, Magothy Formation, U. S. Middle Atlantic Coastal Plain

Stratigraphy ◽  
2021 ◽  
pp. 1-27
Author(s):  
Peter J. Sugarman ◽  
Kenneth G. Miller ◽  
James V. Browning ◽  
Peter P. McLaughlin, Jr. ◽  
Denise K. Kulhanek
Keyword(s):  
New York ◽  
Sea Level ◽  
Sequence Stratigraphy ◽  
Coastal Plain ◽  
Atlantic Coastal Plain ◽  
Dynamic Topography ◽  
Middle Atlantic ◽  
Sequence Boundaries ◽  
Low Amplitude ◽  
Atlantic Coastal

ABSTRACT: The peak "hothouse" interval of the Turonian-Coniacian (93-87 Ma) is represented on the U.S. middle Atlantic Coastal Plain by sequences of the Raritan/Bass River, Magothy, and Cheesequake Formations deposited on a passive continental margin as mixed wave-, tide-, and river dominated deltas. We apply sequence stratigraphy integrated with biostratigraphy to identify and map two major sequence boundaries separating the Raritan/Bass River, Magothy, and Cheesequake Formations and four to five (Mg1, Mg2, Mg3, ?Mg4, Mg5) Magothy sequences using continuous cores, outcrops, and geophysical logs in New Jersey. We extend correlations into New York and Delaware using well logs. The Magothy sequences disconformably overlie the well-dated (>93 Ma) lower Turonian to Cenomanian marine Raritan/Bass River sequences and are disconformably overlain by the marine Cheesequake Formation, which straddles the Coniacian/Santonian boundary. A "mid-Turonian" hiatus (ca. 93-90 Ma) associated with this major disconformity is a global sequence boundary (K-Tu4) reflecting a ~ 25 m sea-level lowering based on published NJ and Russian Platform backstripping records that indicate this was a major lowering of Global Mean Sea Level (GMSL).Higher-order (~1 Myr scale) sequence boundaries bracketing Mg1-Mg5 apparently correlate with global sequences but are only associated with low-amplitude (<25 m) sea-level falls.Mapping of sequences within the Magothy Formation shows the influence of 2 to 3 moderate-sized river sources, with thickening northeastward toward Long Island, New York, and thinning southwestward toward Delaware. Thick northern depocenters contrast with the preceding Potomac Formation (Barremian-early Cenomanian) with thick southern depocenters. This seesawing of basins on the 100-300 km and 2-10+ Myr scales is due to tectonism likely from changes inmantle dynamic topography. The remarkably widespread distribution of Magothy sequences and facies indicates stability of this deltaic depositional system over ~ 4Myr despite low-amplitude (less than 25m) sea-level variations.Widespread facies correlation provides a predictable distribution of aquifer sands and confining-unit clays tied to sea-level changes on complex deltaic facies.

100 Myr record of sequences, sedimentary facies and sea level change from Ocean Drilling Program onshore coreholes, US Mid-Atlantic coastal plain

2008 ◽  
Vol 20 (2) ◽  
pp. 227-248 ◽  
Author(s):  
James V. Browning ◽  
Kenneth G. Miller ◽  
Peter J. Sugarman ◽  
Michelle A. Kominz ◽  
Peter P. McLaughlin ◽  
...  
Keyword(s):  
Sea Level ◽  
Coastal Plain ◽  
Sea Level Change ◽  
Sedimentary Facies ◽  
Atlantic Coastal Plain ◽  
Ocean Drilling Program ◽  
Ocean Drilling ◽  
Level Change ◽  
Atlantic Coastal ◽  
And Sea Level

Late Cenozoic Stages and Molluscan Zones of the U.S. Middle Atlantic Coastal Plain

1981 ◽  
Vol 55 (S12) ◽  
pp. 1-34 ◽  
Author(s):  
Blake W. Blackwelder
Keyword(s):  
Coastal Plain ◽  
Atlantic Coastal Plain ◽  
Early Pleistocene ◽  
Late Cenozoic ◽  
Late Pliocene ◽  
Far North ◽  
Middle Atlantic ◽  
Late Pleistocene To Holocene ◽  
Atlantic Coastal ◽  
The U.S

Pliocene to Holocene deposits of the U.S. Atlantic Coastal Plain from Maryland to Georgia are divided into four stages and four substages using molluscan biostratigraphic data. These divisions are the Wiltonian and Burwellian Stages (early Pliocene), Gouldian and Windyan Substages of the Colerainian Stage (late Pliocene to early Pleistocene), and Myrtlean and Yongesian Substages of the Longian Stage (late Pleistocene to Holocene). These stages may be recognized from Florida to as far north as Massachusetts and will facilitate correlation with other regions.

Oxon Run Parkway: Paleontological resource inventory; supplement to the National Capital Parks-East paleontological resource inventory

2021 ◽  
Author(s):  
Margot Nelson ◽  
Michael Antonioni ◽  
Vincent Santucci ◽  
Justin Tweet
Keyword(s):  
Coastal Plain ◽  
District Of Columbia ◽  
Atlantic Coastal Plain ◽  
Natural Area ◽  
Original Plan ◽  
Resource Inventory ◽  
National Capital ◽  
Park Service ◽  
History Of ◽  
Atlantic Coastal

Oxon Run Parkway (OXRN) is a 51-hectare (126-acre) natural area within Washington, D.C. administered by the National Park Service under National Capital Parks East (NACE). The original plan called for a road, slated to follow Oxon Run stream, but this never came to fruition; despite this, the moniker stuck. The majority of the original Oxon Run Parkway is managed by the District of Columbia. The section of Oxon Run Parkway under NPS jurisdiction contains wetlands and forests, as well as the only McAteean magnolia bogs still remaining in the District. The lower Cretaceous Potomac Group, known as one of the few dinosaur-bearing rock units on the east coast of North America, crops out within Oxon Run. One of the most prevalent fossil-bearing resources are the siderite, or “bog iron” sandstone slabs that sometimes preserve the footprints or trackways of various vertebrates, including dinosaurs. Such trackways have been reported from Potomac Group outcrops throughout the Atlantic Coastal Plain of Maryland and Virginia. In 2019, National Capital Parks-East took possession of such a track, referred to a dinosaur, collected by paleontologist Dr. Peter Kranz. This report was compiled after a paleontological survey of Oxon Run Parkway and is intended as a supplement to the National Capital Parks East Paleontological Resource Inventory (Nelson et al. 2019). This report contains information on the history of Oxon Run Parkway and its geology, as well as discussion of the fossil track.

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