Mineralization and paleofluids in the vicinity of the Upper Rhine Graben

莱茵河上游地堑附近的矿化和古流体

• 批准号: 245220959
• 负责人: Professor Dr. Gregor Markl
• 金额: --
• 依托单位: Arbeitsgruppe Petrologie und Mineralische Rohstoffe
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2016-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/245220959?language=en
• 关键词: Mineralization; paleofluids; vicinity; Upper; Rhine

The Variscan massifs of the Vosges Mountains in France and the Schwarzwald (Black Forest) in Germany are separated by and have been uplifted during the formation of the Upper Rhinegraben (URG) in the Middle Paleogene. This tectonic movement brought gneissic and granitic basement rocks into contact with various strata of Mesozoic and Paleogene sediments and especially, it brought basement and various sedimentary aquifers into contact, which had been separated by impermeable layers before. The mixing of these distinct types of fluids led to and is monitored by various types of hydrothermal veins occurring along the margins of the URG. Six principle types of mineralization can be distinguished based on preliminary observations at 31 localities. These comprise variable amounts of carbonates, barite, quartz, galena, fahlore and rarer ore minerals. It is suggested here, that these distinct mineralizations record mixing processes of specific aquifers during the Paleogene evolution of the URG. Fluid inclusion, mineralogical and geochemical investigations in these veins will be coupled to thermodynamic models of fluid-rock interaction resulting in reconstructed paleo-fluid compositions, which will be compared to modern fluids known from deep drillholes and thermal waters (e. g., NAGRA drillholes in Nothern Switzerland, Soultz-sous-Forêt, Bruchsal, Bühl, Baden-Baden and others) and to compositions of modern formation waters to unravel the details of fluid migration and reaction in response to the major tectonic movement.

法国孚日山脉的瓦里斯坎地块和德国的施瓦茨瓦尔德(黑森林)地块在中古近纪的上莱茵格拉本(URG)形成过程中被分离并被抬升。这一构造运动使片麻质和花岗岩基岩与中生代和古近纪沉积的不同地层接触，特别是使原本被不透水层隔开的基底与各种沉积含水层接触。这些不同类型的流体的混合导致了URG边缘的各种类型的热液矿脉，并受到它们的监控。根据31个地点的初步观察，可划分出六种主要的矿化类型。这些矿物包括不同数量的碳酸盐、重晶石、石英、方铅矿、绿泥石和较稀有的矿石矿物。这里认为，这些不同的矿化作用记录了古近纪URG演化过程中特定含水层的混合过程。这些矿脉中的流体包裹体、矿物学和地球化学研究将与流体-岩石相互作用的热力学模型相结合，从而重建古流体成分，并将其与从深钻孔和热水中已知的现代流体(例如，瑞士北部的Nagra钻孔、Soultz-sous-Four、Bruchsal、Bühl、Baden-Baden等)以及现代地层水的成分进行比较，以揭示流体运移和反应的细节，以响应重大构造运动。

项目成果

Exploration of hydrothermal carbonate magnesium isotope signatures as tracers for continental fluid aquifers, Schwarzwald mining district, SW Germany

• DOI: 10.1016/j.chemgeo.2015.02.009
• 发表时间: 2015-04
• 期刊: Chemical Geology
• 影响因子: 3.9
• 作者: B. Walter;A. Immenhauser;A. Geske;G. Markl

Major element compositions of fluid inclusions from hydrothermal vein-type deposits record eroded sedimentary units in the Schwarzwald district, SW Germany

德国西南部黑森林地区热液脉型沉积物记录侵蚀沉积单元的流体包裹体的主要元素组成

• DOI: 10.1007/s00126-017-0719-7
• 发表时间: 2017
• 期刊: Mineralium Deposita
• 影响因子: 4.8
• 作者: Walter;Burisch
• 通讯作者: Burisch

Multi-reservoir fluid mixing processes in rift-related hydrothermal veins, Schwarzwald, SW-Germany

德国西南部黑森林与裂谷相关的热液脉中的多储层流体混合过程

• DOI: 10.1016/j.gexplo.2017.12.004
• 发表时间: 2018
• 期刊: Journal of Geochemical Exploration
• 影响因子: 3.9
• 作者: Walter;Burisch;Fusswinkel;Steele-MacInnis;Wälle;Apukhtina
• 通讯作者: Apukhtina

The connection between hydrothermal fluids, mineralization, tectonics and magmatism in a continental rift setting: Fluorite Sm-Nd and hematite and carbonates U-Pb geochronology from the Rhinegraben in SW Germany

• DOI: 10.1016/j.gca.2018.08.012
• 发表时间: 2018-11
• 期刊: Geochimica et Cosmochimica Acta
• 影响因子: 5
• 作者: B. Walter;A. Gerdes;I. Kleinhanns;I. Dunkl;H. Eynatten;S. Kreissl;G. Markl

Late-stage anhydrite-gypsum-siderite-dolomite-calcite assemblages record the transition from a deep to a shallow hydrothermal system in the Schwarzwald mining district, SW Germany

• DOI: 10.1016/j.gca.2017.12.002
• 发表时间: 2018-02
• 期刊: Geochimica et Cosmochimica Acta
• 影响因子: 5
• 作者: M. Burisch;B. Walter;A. Gerdes;Maximilian Lanz;G. Markl