Beschreibung
This proposal seeks funding for a drilling program in Ultrahigh-Pressure Rocks as part of the Chinese Continental Scientific Drilling, CCSD. The Su-Lu - Dabie UHP Belt in eastern China is the Worlds most prominent exposure of previously very deeply subducted and highly metamorphosed rocks. After detailed site investigations in three areas suitable for deep drilling a location was choosen during an ICDP cosponsored workshop in August 1997. In the Donghai area in the southwesternmost part of the belt a high-velocity layer at 3 to 4 km depth, frequently existing mining boreholes and considerable infrastructure favour drilling. A 1 to 2 km pilot hole and a 5 km main hole are planned within a program of deep geological and geophysical investigations, drilling, coring and related experiments as well as long-term monitoring.