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: Article in Journal/Newspaper
Language:English
Published: PANGAEA 2000
Subjects:
Core wireline system
CRP-2
Sampling/drilling from ice
Cape Roberts Project CRP
Antarc*
Antarctica
antartic*
Ross Sea
Victoria Land
Online Access:https://dx.doi.org/10.1594/pangaea.510757
https://doi.pangaea.de/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. ... : Supplement to: Lavelle, Mark (2000): Strontium isotope stratigraphy and age model for CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 611-619 ...

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