PRELIMINARY RESULT FOR THE Sm-Nd WHOLE-ROCK AGE OF THE METAMORPHIC ROCKS FROM MOUNT PARDOE IN THE NAPIER COMPLEX, EAST ANTARCTICA

P(論文) The Sm-Nd whole rock isochron age was determined for metamorphic rocks from Mount Pardoe, Napier Complex. Acidic gneiss (orthopyroxene-mesoperthite-quartz gneiss), being one of the main representative metamorphic rocks, gave an age of 2516±274 Ma with an initial ^<143>Nd/^<144>Nd r...

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Bibliographic Details
Main Authors: タイノショウ, ヨシアキ, カガミ, ヒロオ, タカハシ, ユウヘイ, イイズミ, シゲル, オサナイ, ヤスヒト, ツチヤ, ノリヨシ, TAINOSHO, Yoshiaki, KAGAMI, Hiroo, TAKAHASHI, Yuhei, IIZUMI, Shigeru, OSANAI, Yasuhito, TSUCHIYA, Noriyoshi
Language:English
Published: National Institute of Polar Research 1994
Subjects:
East Antarctica
Napier
Pardoe
Mount Pardoe
Antarc*
Antarctica
Online Access:https://nipr.repo.nii.ac.jp/record/2756/files/KJ00002368386.pdf
https://doi.org/10.15094/00002756
https://nipr.repo.nii.ac.jp/records/2756
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Summary:P(論文) The Sm-Nd whole rock isochron age was determined for metamorphic rocks from Mount Pardoe, Napier Complex. Acidic gneiss (orthopyroxene-mesoperthite-quartz gneiss), being one of the main representative metamorphic rocks, gave an age of 2516±274 Ma with an initial ^<143>Nd/^<144>Nd ratio of 0.50914±0.00021. εNd values normalized to 2516 Ma for individual acidic gneiss range from -3.7 to -7.0. This Sm-Nd whole-rock isochron age indicates a major period of equilibration of the isotopic system on a whole-rock scale at 2516±274 Ma. departmental bulletin paper

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