Major Miocene geological events in southern Tibet and eastern Asia induced by the subduction of the

• 作者: Xinlei Sun Wei-dong Sun Yong-bin Hu Wei Ding Trevor Ireland Mei-zhen Zhan Ji-qiang Liu Ming-xing Ling Xing Ding Zhao-feng Zhang Wei-ming Fan
• 来源期刊: 地球化学学报(英文）
• 关键词: Ridge subduction Eastern Tibetan Plateau Cenozoic mineralization Seismic anomaly
• 年，卷（期）: 2018,（3）
• 页码范围: 395-401
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11631-018-0262-y

摘要

Cenozoic adakitic rocks in the Gangdese changed from barren continental melts to ore-forming slab melts at ~ 23 Ma. The distribution and chemical characteristics of the ore-forming adakites point to an association with the Ninetyeast Ridge. The subduction of the thick, rigid Ninetyeast Ridge changed the geometry and rheology of the eastern Tibetan Plateau lithosphere and asthenosphere, restrained the eastward escape of asthenospheric mantle as well as continental fragments, and promoted the uplift and building of the Tibetan Plateau, which consequently changed the tectonic and climatic regimes in eastern Asia.