^<40>Ar-^<39>Ar AND K-Ar AGES FOR IGNEOUS AND METAMORPHIC ROCKS FROM THE SOR RONDANE MOUNTAINS, EAST ANTARCTICA
スポンサーリンク
概要
- 論文の詳細を見る
Eight ^<40>Ar-^<39>Ar and six K-Ar ages were determined for igneous and metamorphic rocks collected from the S∅r Rondane Mountains, East Antarctica. Biotites from granite and syenite show ^<40>Ar-^<39>Ar ages of about 500 Ma, which are similar to the reported Rb-Sr age. K-Ar and ^<40>Ar-^<39>Ar ages of 440-480 Ma were obtained for igneous dyke samples and metamorphic rocks. ^<40>Ar-^<39>Ar age spectra for K-feldspars, which were separated from the same rocks as biotite, indicate the stair-type patterns.
- 国立極地研究所の論文
著者
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Funaki Minoru
National Institute of Polar Research
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TAKIGAMI Yutaka
Kanto Gakuen University
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Funaki Minoru
National Inst. Of Polar Res. 9-10 Kaga 1 Itabashi Tokyo 173-8515 Jpn
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