Differentiation in ancient lunar magmatism recorded in Apollo 14 breccia

DOI

Bibliographic Information

Other Title
  • アポロ14号角レキ岩からわかる月初期の玄武岩質マグマの分化

Description

Mare basalt volcanism is known to be initiated as old as 3.9 Ga, in roughly coincident with massive bombardment period. It is also believed that crypt-mare basalts erupted prior to the 3.9 Ga would probably be obliterated by massive bombardment around 3.9 Ga and subsequent basin-filling / veneer of mare basalt. Taylor et al. (1983) reported 4.23 Ga mare basalt cumulate clast from Apollo 14 breccia 14305 and suggested that mare-type volcanism commenced at least as early as 4.3 Ga in the Fra Mauro region. We studied a series of three thin sections including this ancient basalt. The modal abundances and mineral compositions of the basalt are successively evolved in the three within the cm scale. This indicates the presence of the small-scale (at least cm order) differentiation probably in a shallow intrusion or hypabyssal setting during the early lunar magmatism.

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Details 詳細情報について

  • CRID
    1390282680709402112
  • NII Article ID
    130005053233
  • DOI
    10.14824/kobutsu.2005.0.143.0
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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