Microstructure and geochronology of pseudotachylite from the Hamm Peak, East Antarctica, and its geological significances

• Main Authors: LIU Jianmin, LIU Xiaochun, ZHAO Yue, ZHANG Shuanhong, XU Gang, DONG Shuwen, MAO Qian, CHEN Bailin
• Format: Article in Journal/Newspaper
• Language: Chinese
• Published: Institute of Geomechanics, Chinese Academy of Geological Sciences 2021
• Subjects: microstructure; microlite; aluminous-rich hyperite; k-ar and 40ar/39ar dating; pseudotachylite; hamm peak; east antarctica; Geology; QE1-996.5; East Antarctica; Prydz Bay; Hamm Peak; Antarc*; Antarctica
• Online Access: https://doi.org/10.12090/j.issn.1006-6616.2021.27.05.061; https://doaj.org/article/0e9defb3f5434be89bec58aa41558336

The pseudotachylite in granulite facies granitic gneisses from the Hamm Peak, southwestern Prydz Bay, East Antarctica, occurs along the east-west-trending ductile-brittle shear zone. The characteristics of microstructure show that the pseudotachylite was formed by the frictional-melt during the rapi...