Mineral inclusions of zircon and UHP metamorphic evidence from paragneiss and orthogneiss of pre-pilot drillhole CCSD-PP2 in north Jiangsu Province, China
Fl. Liu et al., Mineral inclusions of zircon and UHP metamorphic evidence from paragneiss and orthogneiss of pre-pilot drillhole CCSD-PP2 in north Jiangsu Province, China, CHIN SCI B, 46(12), 2001, pp. 1037-1042
Coesite inclusions, together with omphacite, jadeite, garnet and phengite i
nclusions, were identified in zircons separates from almost all gneissic co
re samples of pre-pilot drillhole CCSD-PP2 by the Laser Raman spectroscopy
and the cathodoluminescence method. These data indicate that gneissic rocks
consisting of paragneisses and orthogneisses ubiquitously experienced UHP
metamorphism. This research may be of great significance for an in-depth st
udy of the subduction-exhumation mechanism of the Sulu UHP metamorphic belt
and selecting the drilling site for the Chinese Continental Scientific Dri
lling Project.