Subduction Erosion Revealed by Late Mesozoic Magmatism in the Gangdese Arc, South Tibet
نویسندگان
چکیده
Subduction of oceanic lithosphere can cause crustal growth and destruction, but whether this balancing act is common in a single fossil convergent system has been unclear. Here we report geochronologic-geochemical-isotopic data on Mesozoic igneous rocks the central-eastern Gangdese arc. Our results reveal: (a) A coupling magmatic arc migration toward continent interior with marked incompatible enrichment sub-arc mantle magma sources; (b) numerous Late Cretaceous adakites were generated via combined partial melting both eroded forearc crust debris subducted crust; (c) truncation extremely short arc-suture distance. work demonstrates that although there was significant vertical juvenile throughout during Mesozoic, large amount continental returned back into through lateral subduction erosion at same time. This study provides important insights long-term material recycling Earth.
منابع مشابه
Subduction erosion: Rates, mechanisms, and its role in arc magmatism and the evolution of the continental crust and mantle
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2022
ISSN: ['1944-8007', '0094-8276']
DOI: https://doi.org/10.1029/2021gl097360