Genesis of the Neogene interstratal karst-type Pohrenk fluorite-barite (+/- lead) deposit (Kirsehir, Central Anatolia, Turkey)

Genc Y.

ORE GEOLOGY REVIEWS, vol.29, no.2, pp.105-117, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 29 Issue: 2
  • Publication Date: 2006
  • Doi Number: 10.1016/j.oregeorev.2005.11.005
  • Journal Name: ORE GEOLOGY REVIEWS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.105-117
  • Hacettepe University Affiliated: Yes

Abstract

The Pohrenk fluorite barite (+/- lead) deposit is located 200 km cast of Ankara, Central Anatolia, Turkey. The ores are hosted by sedimentary rocks of the east-west trending Tertiary Cicekdagi foreland basin. The Cicekdagi Basin is bounded by Paleozoic metamorphic rocks of the Kirsehir Massif in the south, and Upper Cretaceous ophiolites and Paleocene granitoids in the north. The basin contains mainly Eocene and Upper Miocene-Pliocene sediments. The Eocene sediments consist of conglomerate, sandstone, marl and carbonate. These are covered unconformably by red conglomerate, mudstone, sandstone, siltstone and claystone of Late Miocene-Pliocene age. Mineralization occurs both in Eocene (Lutetian) limestones and Neogene detrital rocks. The distribution of ores is controlled by the unconformity surface between limestones and detrital rocks. The main ore types are replacements, open-space fillings, breccias and veins.