Constraining the relation between large-scale extensional tectonics, fluid flow and carbonate hosted Pb-Zn ore formation - geochronology of the Ja-bali deposit (Yemen)

限制大规模伸展构造、流体流动和碳酸盐岩中铅锌矿形成之间的关系 - Ja-bali 矿床的地质年代学（也门）

• 批准号: 220118460
• 负责人: Professor Dr. Jens Gutzmer, Ph.D.
• 金额: --
• 依托单位: Dipartimento di Scienze della Terra, dellAmbiente e delle Risorse (DISTAR)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2012
• 资助国家: 德国
• 起止时间: 2011-12-31 至 2015-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/220118460?language=en
• 关键词: Constraining; relation; between; large; scale

Epigenetic Mississippi Valley type (MVT) Pb-Zn deposits occur in carbonate platform successions of Late Achaean to Mesozoic age. Distinct paleo-fluid flow models are available for the formation of Pb-Zn ore mineralization. The connection between ore formation, paleo-fluid flow and tectonic regimes depend on the availability of accurate ages for ore formation. Unfortunately, geochronological investi-gations of this deposit type are exceedingly difficult; the most promising approach is Rb-Sr dating of sphale-rite.The Jabali deposit (Yemen) of MVT type is exceptional because it is assumed to have formed in an extensional tectonic regime, unlike the overwhelming majority of MVT deposits with known age that are believed to be related to compressional regimes. Rb-Sr dating of the Jabali deposit can support a deeper insight into the formation of ore deposits in carbonate platforms related to hydrothermal fluid flow, especially in connection with extensional tectonic regimes.

表生密西西比谷型铅锌矿床产于晚太古代至中生代碳酸盐岩台地序列中。铅锌矿化的形成有不同的古流体流动模式。成矿作用、古流体流动和构造体制之间的联系取决于准确的成矿年龄。不幸的是，这类矿床的年代学研究非常困难；最有希望的方法是对白晶石进行Rb-Sr测年。Jabali矿床(也门)是一个例外，因为它被认为形成于伸展构造体制，而不像绝大多数已知年龄的MVT矿床被认为与挤压体制有关。Jabali矿床的Rb-sr测年有助于更深入地了解与热液流动有关的碳酸盐台地中成矿作用，特别是与伸展构造体制有关的成矿作用。

项目成果

The Jabali nonsulfide Zn–Pb–Ag deposit, western Yemen

• DOI: 10.1016/j.oregeorev.2014.02.003
• 发表时间: 2014-09
• 期刊: Ore Geology Reviews
• 影响因子: 3.3
• 作者: N. Mondillo;M. Boni;G. Balassone;M. Joachimski;A. Mormone