Chronostratigraphy on sediment core CRP-2 from the Ross Sea, Antarctica

Strontium isotope stratigraphy was used to date 16 discrete horizons within the CRP-2/2A drillhole. Reworked Quaternary (<1.7 Ma) and possible Pliocene (<2.4 Ma) sediments overlie a major sequence boundary at 25.92 meters below sea floor (mbsf). This hiatus is estimated to account for c. 16 My...

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Bibliographic Details
Main Author: Lavelle, Mark
Format: Dataset
Language:English
Published: PANGAEA 2000
Subjects:
14.2 km at 096° true from Cape Roberts
Cape Roberts Project
Core wireline system
CRP
CRP-2
CRP-2A
CWS
off Cape Roberts
Ross Sea
Antarctica
Sampling/drilling from ice
Cape Roberts
Roberts Cape
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.510757
https://doi.org/10.1594/PANGAEA.510757
Description
Summary:Strontium isotope stratigraphy was used to date 16 discrete horizons within the CRP-2/2A drillhole. Reworked Quaternary (<1.7 Ma) and possible Pliocene (<2.4 Ma) sediments overlie a major sequence boundary at 25.92 meters below sea floor (mbsf). This hiatus is estimated to account for c. 16 Myr of missing section. Early Miocene to ?earliest Oligocene (c. 18.6 to >31 Ma) deposits below this boundary were cut by multiple erosion surfaces of uncertain duration. Strontium isotope ages are combined with 40Ar/39Ar dates, diatom and calcareous nannofossil datum and a palaeomagnetic polarity zonation, to produce an age model for the core.

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