McHugh, Cecilia M. G. et al. (1999): High-resolution Pleistocene climatic variability revealed by sediments from the New Jersey slope

ODP 150
ODP 174A
ODP 174A 1071
ODP 174A 1072
ODP 174A 1073
ODP 150 902
ODP 150 903
ODP 150 904

McHugh, Cecilia M. G.
City University of New York, Queens College, School of Earth and Environmental Sciences, Flushing, NY, United States

Olson, Hilary C.
University of Texas at Austin, United States

Balsam, William L.
University of Texas at Arlington, United States

Damuth, John E.
Townsend Harris High School, United States

Ben-Eliezer, Bettina

Berger, Michael

High-resolution Pleistocene climatic variability revealed by sediments from the New Jersey slope
In: Anonymous, American Association of Petroleum Geologists 1999 annual meeting
American Association of Petroleum Geologists and Society of Economic Paleontologists and Mineralogists, Tulsa, OK, United States
Site 1073A was drilled on the upper continental slope (water depth 665 m) off New Jersey as part of the ODP Leg 174A New Jersey Sea-Level Transect and was designed to study glacio-eustatic changes on a passive margin. Sedimentological and geochemical data are used to reconstruct a high-resolution sea-level record from the thick (520 m) Pleistocene section recovered at this site. Sedimentation rates of approximately 900 m/my permit the resolution of small-scale variability that is related to sea-level change. Seismic data show that the Pleistocene sediment at Site 1073A is relatively undisturbed and an extensive array of seismic lines provide the necessary control to correlate from the shelf drill sites (Leg 174A Sites 1071-1072) to the slope drill sites (Site 1073 and Leg 150 Sites 902-904). Oxygen-isotope chemical stratigraphy derived from the tests of Globorotalia inflata and stratigraphy derived from CaCO (sub 3) analyses reveal a correlation between high CaCO (sub 3) (up to 30%) and low oxygen isotope signatures (delta (super 18) O PDB 1.5-2.5) and vice-versa. This variability suggests glacial-interglacial cycles. A higher-order variability is indicated by an inverse correlation between the relative abundance of quartz and iron-rich minerals and calcite. Other proxies: spectrophotometry data and opal and organic carbon analyses will be used to further constrain these findings. The timing of these events will be determined from Accelerator Mass Spectrometry (super 14) C dates.
Coverage:Geographic coordinates:
West:-80.0000East: 20.0000

Quaternary geology; accelerator mass spectra; Atlantic Ocean; biochemistry; calcium carbonate; carbon; Cenozoic; continental slope; correlation; cycles; eustacy; Foraminifera; geophysical methods; geophysical surveys; glacial environment; Globigerinacea; Globorotalia; Globorotalia inflata; Globorotaliidae; high-resolution methods; interglacial environment; Invertebrata; isotope ratios; isotopes; Leg 150; Leg 174; Leg 174A; mass spectra; microfossils; mineral composition; New Jersey; North Atlantic; O-18/O-16; Ocean Drilling Program; ODP Site 1071; ODP Site 1072; ODP Site 1073; ODP Site 902; ODP Site 903; ODP Site 904; organic carbon; oxygen; paleoclimatology; passive margins; plate tectonics; Pleistocene; Protista; Quaternary; Rotaliina; sea-level changes; sediments; seismic methods; spectra; stable isotopes; surveys; thickness; United States; variations;