Figure 1. Generalized map of selected tectonic elements around the Eastern Himalayan Syntaxis. The Indochina and Sibumasu crustal fragments form the main body of rocks extruded to the SE during early Cenozoic time. Their position relative to the Qiangtang element of central Tibet is discussed in the text. Major suture zones and shear zones that bound these fragments are shown in red: JS—Jinsha suture, BS—Bangong suture, NS—Nujiang suture (coincident with the Gaoligong shear zone [GSSZ]); L-CM-NU-B-R: L—Lancangjiang, CM—Changning-Mengliang, NU—Nan-Uttaradit, B—Bentong, R—Raub suture zones combined. SF—Sagaing fault; ASSZ—Ailao Shan shear zone, CSSZ—Chong Shan shear zone, DSSZ—Diancang Shan shear zone, and XSSZ—Xuelong Shan shear zone, BaS—Baoshan element that forms the northern part of the Sibumasu regional tectonic element. Box indicates the location of Figure 2.