A New Tectonic Model for the Genesis of Adakitic Arc Magmatism in Cretaceous East Asia

Changyeol Lee, In Chang Ryu

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Citations (Scopus)

Abstract

A recently introduced plate reconstruction model refutes the migration of the Izanagi-Pacific ridge formerly considered to be responsible for the adakitic arc magmatism in East Asia during the Cretaceous. This chapter suggests that northeast-to-southwest migration of the East Asian continental blocks during the Cretaceous resulted in apparent southwest-to-northeast migration of an intracontinental mantle plume from eastern China to Far East Russia. The apparent migration of the mantle plume explains the southwest-to-northeast migration of intracontinental adakitic rocks and A-type granitoids formed by partial melting of delaminated thickened lower mafic crust and decompression melting of the mantle plume, respectively, and the simultaneous migration of adakitic arc magmatism generated by a hot lobe of the mantle plume injected into the mantle wedge, producing partial melting of subducted oceanic crust.

Original languageEnglish
Title of host publicationSubduction Dynamics
Subtitle of host publicationFrom Mantle Flow to Mega Disasters
Publisherwiley
Pages69-79
Number of pages11
ISBN (Electronic)9781118888865
ISBN (Print)9781118888858
DOIs
Publication statusPublished - 2015 Sep 26

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

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    Lee, C., & Ryu, I. C. (2015). A New Tectonic Model for the Genesis of Adakitic Arc Magmatism in Cretaceous East Asia. In Subduction Dynamics: From Mantle Flow to Mega Disasters (pp. 69-79). wiley. https://doi.org/10.1002/9781118888865.ch3