40Ar-39Ar age analyses of some intruded rocks from Mt. Riiser-Larsen in the Napier Complex
Three ^<40>Ar-^<39>Ar geochronological studies are performed for intruded rocks from Mt Riiser-Larsen in the Napier Complex, East Antarctica All samples have excess Ar and no ^<40>Ar-^<39>Ar plateau ages are obtained from these results Considering two previous age results, ho...
Main Authors: | , , |
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Format: | Report |
Language: | English |
Published: |
Kanto Gakuen University/School of Earth Sciences, HIS, Kyoto University/National Institute of Polar Research
2002
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Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3107 http://id.nii.ac.jp/1291/00003107/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3107&item_no=1&attribute_id=18&file_no=1 |
Summary: | Three ^<40>Ar-^<39>Ar geochronological studies are performed for intruded rocks from Mt Riiser-Larsen in the Napier Complex, East Antarctica All samples have excess Ar and no ^<40>Ar-^<39>Ar plateau ages are obtained from these results Considering two previous age results, however, two metamorphic events at about 700-750 Ma and 1000-1100 Ma might have been suggested |
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