Karst bauxite deposits in the Zagros Mountain Belt, Iran

Zarasvandi, A., Charchi, A., Carranza, E.J.M., and Alizadeh, B. (2008) Karst bauxite deposits in the Zagros Mountain Belt, Iran. Ore Geology Reviews, 34 (4). pp. 521-532.

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Abstract

More than 190 occurrences of bauxitic–lateritic deposits were investigated in seven areas within the Zagros Simply Folded Mountain Belt in southwestern of Iran. The bauxitic horizons are situated in eroded major NW–SE trending anticlines and occur in karst cavities near or at the boundary between the Sarvak and Ilam Formations. Uplift in the Cenomanian–Turanian period had exposed the Sarvak limestone to karst weathering and, during a period of unconformity, layers of ferruginous–argillaceous limestone debris developed and accumulated on its surface. The ferruginous–argillaceous debris was partly converted to bauxite. Folding and faulting in Oligocene–Miocene time, with ensuing erosion, exposed the bauxitic horizons on the limbs and cores of anticlines. The karst bauxite deposits are probably of authigenic origin, as evidenced by their lithologic associations, textural and mineralogy.

Item ID: 27362
Item Type: Article (Research - C1)
ISSN: 1872-7360
Keywords: karst bauxites; al-rich limestones; authigenic; Zagros Mountain Belt; Iran
Date Deposited: 13 Jun 2013 04:09
FoR Codes: 04 EARTH SCIENCES > 0403 Geology > 040399 Geology not elsewhere classified @ 100%
SEO Codes: 84 MINERAL RESOURCES (excl. Energy Resources) > 8499 Other Mineral Resources (excl. Energy Resources) > 849999 Mineral Resources (excl. Energy Resources) not elsewhere classified @ 100%
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