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

• Main Author: Lavelle, Mark
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 1998
• Subjects: Core wireline system; CRP-1; Sampling/drilling ice; Cape Roberts Project CRP; Antarc*; Antarctica; antartic*; Ross Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.510750; https://doi.pangaea.de/10.1594/PANGAEA.510750

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. ... : Supplement to: Lavelle, Mark (1998): Strontium isotope stratigraphy of the CRP-1 drillhole, Ross Sea, Antarctica. Terra Antartica, 5(3), 691-696 ...