Koeberl, C., B. Milkereit, J.T. Overpeck, C.A. Scholz, W.U. Reimold, L. Ferriere, L. Coney, and J.A. Peck

2007 DOSECC Newsletter 5: 1-4

 

ABSTRACT

Bosumtwi is a young and well-preserved meteorite impact structure that is also the source crater of one of only four known tektite strewn fields (the Ivory Coast tektites). The philosophy behind the drilling project, which was conducted within the framework of the International Continental Scientific Drilling Program (ICDP), involved two main objectives: (1) to determine a one million year continuous paleoclimatic record from detailed multidisciplinary investigations of the post-impact crater fill sediments as such an extended record for the equatorial zone has not yet been accessible; and (2) to obtain a complete section through the impact breccia deposits in the central parts of the crater, both on top of the central uplift and in the surrounding crater moat. Previously, impact breccias at Bostumtwi were only known from the crater environs, and this drilling project allows for comprehensive comparison of impactites within and outside of the crater.