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...

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Bibliographic Details
Main Authors: Yutaka Takigami, Naoto Ishikawa, Minoru Funaki
Format: Report
Language:English
Published: Kanto Gakuen University/School of Earth Sciences, HIS, Kyoto University/National Institute of Polar Research 2002
Subjects:
^<40>Ar-^<39>Ar age
Mt. Riiser-Larsen
Napier Complex
East Antarctica
Riiser-Larsen
Napier
Antarc*
Antarctica
Polar geoscience
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
Description
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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