Constraints on age and origin of hydrothermal deposits in major crustal units of the Western Carpathians

西喀尔巴阡山脉主要地壳单元热液矿床年龄和成因的制约

• 批准号: 402752656
• 负责人: Dr. Stefan Kiefer
• 金额: --
• 依托单位: Lehrstuhl Allgemeine und Angewandte Mineralogie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2018
• 资助国家: 德国
• 起止时间: 2017-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/402752656?language=en
• 关键词: Constraints; age; origin; hydrothermal; deposits

Hydrothermal ore mineralizations in the Low Tatra Mts. (Western Carpathians, Slovakia) comprise a variable group of parageneses, confined to ore veins in granitoid and high-grade metamorphic rocks. All these rocks are Variscan but they were strongly overprinted in the Alpine orogeny. The age and the origin of these mineralizations are unknown; because of the involvement of two orogenic cycles in this region, the history of the ore veins can be complex. Here, we propose a detailed study of the ore mineralizations in the Low Tatra Mts. The age of the mineralizations will be determined by U/Th-Pb dating on uraninite, monazite, and zircon, either by electron microprobe or by laser-ablation inductively-coupled plasma mass spectrometry (LA-ICP-MS). Using the latter technique, we will also analyze minerals which were not so far considered suitable for such dating, for example hydrothermal carbonates. Hence, we will exploit a major breakthrough in the analytical and dating possibilities and even attempt to date directly the primary sulfides. The dating of the minerals of the ore veins will be complemented by K/Ar dating of hydrothermal illite. Stable isotopes (C,S,O) analyses will be carried out together with fluid inclusion microthermometry in order to pinpoint the source of the ore components in the hydrothermal fluids. They will be coupled to the age determinations via considerations if the geochemistry of coeval fluids is controlled by the host rocks or if the disparate fluid chemistry reflects geotectonic events that occurred at different time in the Earth’s history. With the investigations done on two representative large deposits, we will attempt to place all data acquired here in a framework of tectonothermal evolution of the Western Carpathians and link the hydrothermal pulses to large-scale crustal events in this realm.

下塔特拉山热液成矿作用。（西喀尔巴阡山脉，斯洛伐克）包括一个可变的共生组，局限于花岗岩和高级变质岩的矿脉。所有这些岩石都是华力西的，但它们在阿尔卑斯山脉上被强烈地叠印。这些矿化的年龄和起源尚不清楚;由于该地区涉及两个造山旋回，矿脉的历史可能很复杂。在这里，我们提出了一个详细的研究在低塔特拉山脉的矿化。矿化的年龄将通过电子探针或激光烧蚀电感耦合等离子体质谱法（LA-ICP-MS）对晶质铀矿、独居石和锆石进行U/Th-Pb测年来确定。使用后一种技术，我们还将分析迄今为止被认为不适合这种定年的矿物，例如热液碳酸盐。因此，我们将在分析和定年的可能性方面取得重大突破，甚至尝试直接测定原生硫化物的年龄。热液伊利石的K/Ar定年将补充矿脉矿物的定年。稳定同位素（C、S、O）分析将与流体包裹体显微测温一起进行，以查明热液流体中矿石组分的来源。如果同时代流体的地球化学是由寄主岩石控制的，或者如果不同的流体化学反映了地球历史上不同时期发生的大地构造事件，那么它们将与年龄测定相结合。通过对两个有代表性的大型矿床的调查，我们将试图将这里获得的所有数据置于西喀尔巴阡山脉构造演化的框架中，并将热液脉冲与该领域的大规模地壳事件联系起来。

项目成果

Rhenium-osmium geochronology of gersdorffite and skutterudite-pararammelsbergite links nickel–cobalt mineralization to the opening of the incipient Meliata Ocean (Western Carpathians, Slovakia)

铼辉石和方钴矿-副菱镁矿的铼-锇地质年代学将镍钴矿化与早期梅利亚塔洋（斯洛伐克西喀尔巴阡山脉）的开放联系起来

• DOI: 10.1007/s00126-022-01101-7
• 发表时间: 2022
• 期刊: Mineralium Deposita
• 影响因子: 4.8
• 作者: Majzlan;Mikuš;Kiefer;Creaser
• 通讯作者: Creaser

HYDROTHERMAL MINERALISATION OF THE TATRIC SUPERUNIT (WESTERN CARPATHIANS, SLOVAKIA): II. GEOCHRONOLOGY AND TIMING OF MINERALISATIONS IN THE NÍZKE TATRY MTS.

• DOI: 10.31577/geolcarp.71.2.2
• 发表时间: 2020-04
• 期刊: Geologica Carpathica
• 影响因子: 1.3
• 作者: J. Majzlan;M. Chovan;S. Kiefer;A. Gerdes;Milan Kohút;P. Siman;P. Konečný;M. Števko;F. Finger;M. Waitzinger;A. Biroň;J. Luptáková;L. Ackerman;J. Hora

HYDROTHERMAL MINERALISATION OF THE TATRIC SUPERUNIT (WESTERN CARPATHIANS, SLOVAKIA): I. A REVIEW OF MINERALOGICAL, THERMOMETRY AND ISOTOPE DATA

Tatricic 超单元（斯洛伐克西喀尔巴阡山脉）的热液成矿作用：I 矿物学、测温和同位素数据回顾

• DOI: 10.31577/geolcarp.71.2.1
• 发表时间: 2020
• 期刊: Geologica Carpathica
• 影响因子: 1.3
• 作者: Majzlan;Chovan;Luptáková
• 通讯作者: Luptáková