Pamukkale University Journal of Engineering Sciences (Jan 2004)
GEOLOGY OF GEZİN (MADEN-ELAZIĞ) AND SURROUNDING AREA
Abstract
The studied area is located at the east of the Hazar Lake, approximately 30 kilometers at SE of Elazığ city and covers an area of 95 km 2 . Magmatic, sedimentary and volcano-sedimentary units which are aged from Jurassic to Middle Eocene outcrops in the area. The Upper Jurassic-Lower Cretaceous aged Guleman Ophiolite forms the base rocks. Maastrichtian-Early Eocene aged Hazar Group overlies with an unconformity on the ophiolitic rocks and consists of three formations. These are, from bottom to top the Ceffan formation which includes reddish conglomerates, the Simaki formation which has flysch character and the Gehroz formation which comprises limestone. Maden Complex is Middle Eocene in age and lies unconformably on the Guleman Ophiolites in the north of the investigation area Volcanosedimantary unit that is associated with basaltic-andesitic volcanics begin with conglomerates and sandstones on the base,and basses into mudstone-marl and limestone upward. The Guleman Ophiolite and the Hazar Group overthrusted onto the Middle Eocene aged Maden Complex after Middle Eocene from south to north. East Anatolian Fault which is a left lateral strike-slip fault crosses the investigation area and it forms a zone which has 5-6 km width. It includes some faults paralel to each other and aligned to NE-SW. It includes few main faults which are paralel to eacher other and have high dip-slip components with strikes to NE-SW (N 60° E).
