K/Ar Age Determinations on Drill Core from DVDP Holes 1 and 2
Four conventional K/Ar ages were determined on two samples from each of DVDP drillholes 1 and 2. Apparent ages (calculated using the new 1977 calibration constants) range from 1.21±0.11 m.y. to 1.34±0.23 m.y. for samples from 25.52m and 148.81m depth respectively in DVDP 1. Age determinations on DVD...
| Main Authors: | , , |
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| Format: | Report |
| Language: | English |
| Published: |
Institute of Polar Studies, The Ohio State University
1979
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| Subjects: | |
| Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=1002 http://id.nii.ac.jp/1291/00001002/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=1002&item_no=1&attribute_id=18&file_no=1 |
| Summary: | Four conventional K/Ar ages were determined on two samples from each of DVDP drillholes 1 and 2. Apparent ages (calculated using the new 1977 calibration constants) range from 1.21±0.11 m.y. to 1.34±0.23 m.y. for samples from 25.52m and 148.81m depth respectively in DVDP 1. Age determinations on DVDP 2 are 1.16±0.03 m.y. and 1.32±0.16 m.y. for samples from depths of 62.38m and 173.93m respectively. The ages are statistically not significantly different from one another; and show the flows and pyroclastic units in DVDP 1 and 2 were erupted about 1.26 m.y. ago over a short period of time, probably less than 0.3 m.y. |
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