Strontium isotope stratigraphy for CRP-3, Victoria Land Basin, Antarctica
Strontium isotope stratigraphy was used to date 5 discrete horizons within the CRP-3 drillhole. A single in situ modiolid bivalve fragment at 10.88 mbsf gives an age of 30.9 (±0.8) Ma for the associated sediment. The four remaining well preserved fragments recovered from 29.94-190.31 mbsf are within...
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| Format: | Article in Journal/Newspaper |
| Language: | unknown |
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Terra Antartica Publication
2001
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| Online Access: | http://nora.nerc.ac.uk/id/eprint/19810/ http://www.mna.it/english/Publications/TAP/TA_pdfs/Volume_08/CRP3_Science_Results/TA_08_593_Lavelle.pdf |
| Summary: | Strontium isotope stratigraphy was used to date 5 discrete horizons within the CRP-3 drillhole. A single in situ modiolid bivalve fragment at 10.88 mbsf gives an age of 30.9 (±0.8) Ma for the associated sediment. The four remaining well preserved fragments recovered from 29.94-190.31 mbsf are within error of this age, indicating a high sedimentation rate and suggesting little time is missing in disconformities. The diagenetic alteration of carbonate macrofossils by continental fluids (and possibly seawater) is a common feature to 320 mbsf. |
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