Granite subduction: Arc subduction, tectonic erosion and sediment subduction

Shinji Yamamoto, Hiroki Senshu, Shuji Rino, Soichi Omori, Shigenori Maruyama

Research output: Contribution to journalArticlepeer-review

107 Citations (Scopus)

Abstract

Continental growth has been episodic, reflecting the episodic nature of mantle dynamics as well as surface dynamics of the Earth, the net result of which is exhibited by the present mantle with two huge reservoirs of TTG rocks, one on the surface continents and the other on the D″ layer on the Core-Mantle Boundary (CMB). During the early half of the Earth history, the felsic continental crust on the surface which formed in an intra-oceanic environment has mostly been subducted into the deep mantle, except in the rare case of parallel arc collision. The growth history of continental crust shows that with its simultaneous formation, a considerable amount must have also been subducted. Such ongoing subduction processes can be seen in the western Pacific region, through tectonic erosion, arc subduction, and sediment-trapped subduction.

Original languageEnglish
Pages (from-to)443-453
Number of pages11
JournalGondwana Research
Volume15
Issue number3-4
DOIs
Publication statusPublished - Jun 2009
Externally publishedYes

Keywords

  • Continental growth
  • Intra-oceanic arc
  • Subduction
  • Western Pacific region

ASJC Scopus subject areas

  • Geology

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