The German Continental Deep Drilling Program (KTB) is a fundamental research project to investigate the physical and chemical conditions and processes in the deep crust for a better understanding of the dynamics of intracontinental structural evolution. Scientific targets include origin and cause of geophysical anomalies, physical and chemical in-situ conditions, fluid systems and their influence on the crust, geophysical structures and crust evolution as well as the installation of a deep earth laboratory.The drilling location in the Oberpfalz region in the northeastern part of Bavaria near the town of Windischeschenbachf on the western flanks of the Bohemian Massif, has been chosen in fall of 1986. The drilling site is located right at the suture line of the Saxothuringian and Moldanubian zones of the Variscan mountain chain. According to geophysical investigations, a highly structured crust can be expected.A 3,000 to 5,000 m fully-cored pilot borehole will be spudded in Sept. 1987, with drilling phase lasting until mid-1988, followed subsequently by a testing and borehole measurement program of about 1 year. According to present plans, the superdeep boreholet in about 200 m distance of the pilot borehole, will be drilled to a target depth of 12 000 to 14 000 m in the period 1990–1997. A completely new rig will be designed to drill this well.Currently about 250 scientists and technicians are working in the project. A project management group has been integrated in 1985 into the Geological Survey of Lower Saxony (NLfB) to run the project.
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- The German Continental Deep Drilling Program, Targets and State of Work
H. J. Behr
- Springer Berlin Heidelberg
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