Indosinian epoch magmatic event and geological significance in the Tengchong block, western Yunnan Province
滇西三江构造带西部腾冲地块内印支期岩浆热事件的发现及其地质意义

Sanjiang Orogenic Belt is located geographically in the area of Nujiang, Lancangjiang and Jinshajiang, SW China. The region east to the Lancangjiang-Changning-Menglian suture is a typical Paleo-Tethyan tectonic domain. But the western Tengchong block is generally thought as Yarlung-Tsangpo-Myitkyina\Nujiang Neo-Tethys tectonic domain and to be of the stable epi-continental sea setting in Neopaleozoic-Early Mesozoic epoch. However, discovery of Indosinian magmatites(219~206Ma)indicates that the Tengchong blo...