Biostratigraphic datums and magnetic properties of ODP Leg 178 sites


Autoria(s): Iwai, Masao; Acton, Gary D; Lazarus, David B; Osterman, Lisa Ellen; Williams, Trevor
Cobertura

MEDIAN LATITUDE: -66.700030 * MEDIAN LONGITUDE: -76.974326 * SOUTH-BOUND LATITUDE: -67.566810 * WEST-BOUND LONGITUDE: -78.488080 * NORTH-BOUND LATITUDE: -64.372200 * EAST-BOUND LONGITUDE: -70.261180 * DATE/TIME START: 1998-02-17T16:15:00 * DATE/TIME END: 1998-03-18T10:30:00

Data(s)

13/08/2002

Resumo

During Ocean Drilling Program (ODP) Leg 178, eight holes were drilled at three sites (1095, 1096, and 1101) on the continental rise along the western Antarctic Peninsula. The rise sediments proved to be good paleomagnetic recorders and provided continuous magnetostratigraphic records at all three sites. Biosiliceous microfossils, particularly diatoms and radiolarians, were present in the upper Miocene through lower Pliocene sections. In the upper Pliocene to Pleistocene sections, biosiliceous microfossils were rare but calcareous nannofossils and foraminifers were present. This paper summarizes the biostratigraphy and magnetostratigraphy of Leg 178 continental rise sites and is the first attempt at direct calibration of Antarctic biostratigraphic events to the geomagnetic polarity timescale in the Pacific sector of the Southern Ocean.

Formato

application/zip, 3 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.787319

doi:10.1594/PANGAEA.787319

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Iwai, Masao; Acton, Gary D; Lazarus, David B; Osterman, Lisa Ellen; Williams, Trevor (2002): Magnetobiochronologic synthesis of ODP Leg 178 rise sediments from the Pacific sector of the Southern Ocean: Sites 1095, 1096, and 1101. In: Barker, PF; Camerlenghi, A; Acton, GD; Ramsay, ATS (eds.) Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 178, 1-40, doi:10.2973/odp.proc.sr.178.236.2002

Palavras-Chave ## = 2920-3400 ka; Age model; Ageprof dat des; Ageprofile Datum Description; Bfr; Bfr uncorr. minus a linear downhole trend; Calculated; Depth; Depth, bottom/max; Depth, composite; Depth, composite bottom; Depth, composite top; Depth, logging; DEPTH, sediment/rock; Depth, top/min; Depth bot; Depth c bot; Depth comp; Depth c top; Depth log; Depth top; Event; F; field anomaly in nT; total field minus the International Geomagnetic Reference Field and the field due to the drill pipe; Geological High-resolution Magnetic Tool (GHMT); induced field in nT; the field anomaly in the borehole caused by the induced magnetization of the sediment; in ppm; Magnetic field, total intensity; Method; Method comment; Ocean Drilling Program; ODP; Parameter; Remanent anomaly; Sample; Sample ID; Suscept; Susceptibility; T = top/last occurrence datum (o.d.), B = base/first o.d., BC = base common/first common o.d., TC = top common/last common o.d.; total magnetic field measured downhole; uncorrected; = field anomaly in the borehole caused by the remanent magnetization of the sediment
Tipo

Dataset