Chinese Continental Scientific Drilling Program
Project Acronym: CCSDP | State: Completed | Expedition ID: 5004
One of the most exciting geologic discoveries in the last 20 years is the finding of the presence of a major ultrahigh pressure (UHP) metamorphic belt in the Dabie-Sulu region of eastern China. In this belt, high-grade continental crustal rocks contain both diamond and coesite, clear evidence of crustal subduction to depths >150 km. This belt formed by collision between the North China and Yangtze blocks in the Mesozoic between about 210 and 220 Ma. Recent work has identified an older, parallel belt on the north side of the Dabie-Qinling Mountains dated as Ordovician (~500 - 440 Ma). A site in the Sulu segment of the belt where ultramafic rock and eclogite are hosted in coesite-bearing gneiss was selected for deep drilling. The seismic profile through the drill site is interpreted in terms of five stacked slices separated by northeast striking, gently southeast dipping ductile shear zones.
Keywords: Asia, China, Convergent Margins, Dabie-sulu, Donghai, UHPM Belt
Cores are stored at China Geological Survey, China
Project Management
Contact Person
Lead PIs
PIs: No data found
CoPIs
- Bolin Cong – Chinese Academy of Sciences
- Borming Jahn – Academia Sinica
- David Rowley – University of Chicago
- Hartmut Kern – University of Kiel
- Juhn Liou – Stanford University
- Paul Robinson – Dalhousie University
- Roland Oberhaensli – University of Potsdam
- Wencai Yang – Zhejiang University
Project Details
Project Description
- Title:
- Chinese Continental Scientific Drilling Program (CCSDP)
- Proposed in:
- 1998
- Current State:
- Completed
- Proposal abstract:
- n.a.
- Geologic age:
- Archean, Proterozoic
- Number of drillsites (drillholes):
- 5(5)
- Drilled length:
- 11327.31 m (12 wellholes/hole attempts/hole deepenings/sidetracks total)
- Cored length:
- 6594.13 m
- Core recovered, length:
- 5584.04 m
- Core recovered length / Cored length:
- 84.7%
- Core recovered / Drilled length:
- 49.3%
- Expedition #
- 5004
- Location
- Asia, P.R. China, Jiangsu Province, Donghai County, Lianyungang City, in the eastern part of the Dabie-Sulu UHPM belt, P.R. China
- Coordinates
- 34.0000, 119.0000
- Status
- Completed
Project Location
Project Timeline
Drilling
4 August 2001 - 8 March 2005