Age determination with strontium isotopes on sediment core CRP-1 from the Ross Sea, Antarctica

Strontium isotope stratigraphy was used to date five discrete horizons within CRP-1. Early and late Quaternary (0.87-1.3 Ma and 0-0.67 Ma respectively) age sediments overlie a major sequence boundary at 43.15 meters below sea floor (mbsf). This hiatus is estimated to account for ~16 m.y. of missing...

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Bibliographic Details
Main Author: Lavelle, Mark
Format: Dataset
Language:English
Published: PANGAEA 1998
Subjects:
16 km ENE Cape Roberts
Cape Roberts Project
Core wireline system
CRP
CRP-1
CWS
off Cape Roberts
Ross Sea
Antarctica
Sampling/drilling ice
Cape Roberts
Roberts Cape
Antarc*
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.510750
https://doi.org/10.1594/PANGAEA.510750
Description
Summary:Strontium isotope stratigraphy was used to date five discrete horizons within CRP-1. Early and late Quaternary (0.87-1.3 Ma and 0-0.67 Ma respectively) age sediments overlie a major sequence boundary at 43.15 meters below sea floor (mbsf). This hiatus is estimated to account for ~16 m.y. of missing section. Early Miocene (16.6-~20.8-25 Ma) age deposits below this boundary are in turn cut by multiple erosion surface representing hiatus is of between 0.2 and 1.2 m.y. Estimated minimum sedimentation rates range between 0.9 and 2.8 cm/k.y. in the Quaternary, and 1.5 and 6.4 cm/ky in the lower Miocene.

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