Differentiation in the Early Earth's Interior: Constraints from Isotope Geochemistry and High-Pressure Experiments

• KOGISO Tetsu

  Department of Interdisciplinary Environment, Graduate School of Human and Environmental Studies, Kyoto University

• KONDO Nozomi

  Department of Interdisciplinary Environment, Graduate School of Human and Environmental Studies, Kyoto University

Bibliographic Information

Other Title

• 初期地球内部における物質分化：同位体地球化学と高圧融解実験からの制約
• ショキ チキュウ ナイブ ニ オケル ブッシツ ブンカ : ドウイタイ チキュウ カガク ト コウアツ ユウカイ ジッケン カラ ノ セイヤク

Abstract

We conducted isotopic model calculations and high-pressure melting experiments in order to estimate the major element composition of the “missing reservoir”, which is a supposed component that should compensate the difference in ¹⁴²Nd/¹⁴⁴Nd ratio between the bulk silicate Earth and carbonaceous chondrite, from which the Earth is assumed to have formed. Our estimation demonstrated that the missing reservoir should have picritic to komatiitic composition, and that it was likely to have been lost from the Earth's surface by a giant impact event at the last stage of the Earth formation.<br>

Journal

• The Review of High Pressure Science and Technology

  The Review of High Pressure Science and Technology 27 (4), 256-265, 2017

  The Japan Society of High Pressure Science and Technology

Keywords

• early Earth
• early crust
• mantle
• missing reservoir
• neodymium isotope
• melting experiment

Details

• CRID: 1390001204381635968
• NII Article ID: 130006338335
• NII Book ID: AN10452913
• DOI: 10.4131/jshpreview.27.256
• ISSN: 13481940
• ISSN: 0917639X
• HANDLE: 2433/242224
• NDL BIB ID: 028849616
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I028849616
• Web Site: https://www.jstage.jst.go.jp/article/jshpreview/27/4/27_256/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed