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Lake Bosumtwi Drilling Project

Project Acronym: BCDP | State: Completed | Expedition ID: 5023

The Bosumtwi impact crater in Ghana is almost completely filled by Lake Bosumtwi with a rim-to-rim diameter of about 11 km, while the lake has a diameter of about 8 km and maximum depth of about 80 m. The crater has an age of 1.07 Ma and was excavated in lower greenschist facies metasediments of the 2.1-2.2 Ga age. The Ivory Coast tektites and microtektites originated from this crater.  Bosumtwi is one of only two known young craters of this size, and may have a crucial diameter at the changeover between a traditional “complex” crater with a central peak and a crater structure that has a central peak-ring system.

Keywords: Africa, Ghana, Bosumtwi, Climate Change, Global Environment, Impact Crater, Lake Drilling, Paleoclimatology

Impact Cores are stored at Federal Institute for Geosciences and Natural Resources, Spandau, Germany

Sediments are stored at University of Minnesota at Minneapolis, Continental Scientific Drilling Facility, USA

Project Details

Project Location

Project Timeline

Sampling Party

January 2005 in Potsdam, Germany


15 July - 15 October 2004

Full Proposal Approved

Workshop Held

22 - 24 September 2001 in Potsdam, Germany

Workshop Proposal Approved