The Tarenben oceanic-island basalts in the middle part of the Bangong-Nujiang suture zone, Xizang and their geological implications

The Tarenben oceanic-island basalts in Xizang occur as part of the Meso-Tethys oceanic crust and special remains of the oceanic crust from the tectonic mélanges in the middle part of the Bangong-Nujiang suture zone. These basalts are characterized by the tectonic settings of the oceanic within plate alkaline basalts in both the submarine eruptive facies and pelagic radiolarian silicalite facies. The discovery of the oceanic-island basalts has disclosed that there once existed the well-developed palaeo-oceanic crust in the Meso-Tethys.