Chapter 2 Meteoritic Chronology : Part I Chronology of the Solar System : Origin of the Solar System

スポンサーリンク

概要

• 論文の詳細を見る

• Constraints on the evolution of the early solar system are discussed on the basis of meteoritic ages which have been obtained by various methods using Rb-Sr, K-Ar, U/Th-Pb, and Sm-Nd systems. Conclusions of our discussions are as follows: (1) Most of primitive materials of meteorites were formed 4.5 × 10^9 yr ago within the uncertainty of several × 10^7 yr. (2) Planetary differentiation processes (such as separation of iron from silicates and magmatism) in meteoritic parent bodies occurred almost at the same time (within several × 10^7 yr) as their formation. (3) Thermal metamorphism (e. g., chemical equilibration among minerals and diffusion of volatile elements) in chondritic parent bodies continued at most in a period of about 1 × 10^8 yr. Unfortunately, owing to the uncertainties in chemical and/or isotopic analyses, the earliest history of meteorites in a time scale of 10^6 to 10^7 yr is still poorly understood.

• 理論物理学刊行会の論文
• 1989-03-10

著者

• Torigoye Noriko

  Geophysical Institute University Of Tokyo

• TORIGOYE Noriko

  Geophysical Institute, University of Tokyo

関連論文

• An Attempt for the Precise Isotope Analysis: Modification of a Compact Type Mass Spectrometer.
• Stepwise Dissolution and Grain Size Separation for Obtaining the Rb-Sr Internal Isochron: Application to Enstatite Chondrite
• Chapter 2 Meteoritic Chronology : Part I Chronology of the Solar System : Origin of the Solar System

スポンサーリンク