The tectonomagmatic evolution of the Rhodope area, Bulgaria

保加利亚罗多彼地区的构造岩浆演化

• 批准号: 20928634
• 负责人: Professor Dr. Carsten Münker
• 金额: --
• 依托单位: Institut für Geologie und Mineralogie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2006
• 资助国家: 德国
• 起止时间: 2005-12-31 至 2012-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/20928634?language=en
• 关键词: tectonomagmatic; evolution; Rhodope; area; Bulgaria

The Rhodope area in Southern Bulgaria constitutes a highly suited terrain to investigate processes active in a late- to post-collisional tectonic regime. As part of an interdisciplinary project (Bündelantrag) involving sedimentological and structural studies, the aim of the proposed project was to examine (1) HP ophiolites and (2) post-collisional high-K volcanic rocks. In the first months of the project we collected an extensive sample suite including HP eclogites and mafic to felsic volcanic rocks. The sampled lavas virtually cover the complete range of K enrichment found in such settings worldwide, including shoshonites and absarokites. In a first model, this compositional spread is interpreted to mirror variable source enrichment by subduction processes. Initial results on the geothermometry and Lu-Hf geochronology of the HP eclogites suggest two different periods of peak metamorphism (Cretaceous and Tertiary). In the second phase of the project, we intend to carry out additional trace element and isotope measurements on the volcanic rocks as well as to finalize Lu-Hf and Sm-Nd geochronology. The results will significantly contribute to the general understanding of the evolution of HP terrains and the origin of high-K magmatism.

保加利亚南部的罗多彼地区是一个非常适合研究碰撞后构造体系中活动过程的地形，作为涉及沉积学和结构研究的跨学科项目 (Bündelantrag) 的一部分，拟议项目的目的是检查。 (1) HP 蛇绿岩和 (2) 碰撞后高 K 火山岩 在项目的最初几个月，我们收集了包括 HP 榴辉岩和镁铁质在内的大量样品。取样的熔岩几乎涵盖了在世界范围内发现的钾富集范围，包括钾辉石和斜长岩。在第一个模型中，这种成分分布被解释为反映了俯冲过程的可变源富集。 HP 榴辉岩的 Lu-Hf 地质年代学表明存在两个不同的变质峰时期（白垩纪和第三纪）。对火山岩进行额外的痕量元素和同位素测量，并最终确定 Lu-Hf 和 Sm-Nd 地质年代学，其结果将极大地有助于对 HP 地形演化和高 K 岩浆作用起源的总体了解。 。

项目成果

Tectonomagmatic Constraints on the Sources of Eastern Mediterranean K-rich Lavas

• DOI: 10.1093/petrology/egr055
• 发表时间: 2012
• 期刊: Journal of Petrology
• 影响因子: 3.9
• 作者: M. Kirchenbaur;C. Münker;S. Schuth;D. Garbe‐Schönberg;P. Marchev

The behaviour of the extended HFSE group (Nb, Ta, Zr, Hf, W, Mo) during the petrogenesis of mafic K-rich lavas: The Eastern Mediterranean case

富钾熔岩成岩过程中扩展 HFSE 族（Nb、Ta、Zr、Hf、W、Mo）的行为：东地中海案例

• DOI: 10.1016/j.gca.2015.05.030
• 发表时间: 2015
• 期刊: Geochimica et Cosmochimica Acta
• 影响因子: 5
• 作者: Kirchenbaur;Münker
• 通讯作者: Münker