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The Lavrion Mines: A Unique Site of Geological and Mineralogical Heritage
Minerals ( IF 2.5 ) Pub Date : 2021-01-14 , DOI: 10.3390/min11010076
Panagiotis Voudouris , Vasilios Melfos , Constantinos Mavrogonatos , Adonis Photiades , Eugenia Moraiti , Branko Rieck , Uwe Kolitsch , Alexandre Tarantola , Christophe Scheffer , Denis Morin , Olivier Vanderhaeghe , Paul G. Spry , James Ross , Konstantinos Soukis , Markos Vaxevanopoulos , Igor V. Pekov , Nikita V. Chukanov , Andreas Magganas , Marianna Kati , Athanasios Katerinopoulos , Stefanos Zaimis

The Lavrion area corresponds to the western part of the Attic-Cycladic metamorphic belt, in the back-arc region of the active Hellenic subduction zone. Between the Eocene and the Miocene, metamorphic rocks (mainly marbles and schists) underwent several stages of metamorphism and deformation due to collision and collapse of the Cycladic belt. Exhumation during the Miocene was accommodated by the movement of a large-scale detachment fault system, which also enhanced emplacement of magmatic rocks, leading to the formation of the famous Lavrion silver deposits. The area around the mines shows the stacking of nappes, with ore deposition mainly localized within the marbles, at marble-schist contacts, below, within, or above the detachment. The Lavrion deposit comprises five genetically-related but different styles of mineralization, a feature never observed in another ore deposit elsewhere, containing the highest number of different elements of any known mining district. The local geology, tectonic, and magmatic activity were fundamental factors in determining how and when the mineralization formed. Other key factors, such as the rise and the fall of sea level, which resulted from climate change over the last million years, were also of major importance for the subsequent surface oxidation at Lavrion that created an unmatched diversity of secondary minerals. As a result, the Lavrion deposit contains 638 minerals of which Lavrion is type-locality for 23 of them, which is nearly 12% of all known species. Apart from being famous for its silver exploitation, this mining district contains more minerals than any other district on Earth. The unique geological, mineralogical, and educational (mining, archaeological, and environmental) features suggest that it is highly suitable to be developed as a future UNESCO Global Geopark.

中文翻译:

Lavrion矿山:地质和矿物学遗产的独特所在地

Lavrion地区对应于活跃的希腊俯冲带的弧后区域的阁楼-基克拉迪变质带的西部。在始新世和中新世之间,由于基克拉迪带的碰撞和塌陷,变质岩(主要是大理石和片岩)经历了多个变质和变形阶段。中新世时期的发掘活动是由大型分离断层系统的运动提供的,该系统也增强了岩浆岩的沉积,导致形成了著名的Lavrion银矿床。矿山周围的区域显示出堆积的尿布,矿石沉积主要集中在大理石内部,大理石片岩接触处,分离区以下,内部或上方。Lavrion矿床包含5种与遗传相关但不同的矿化方式,一种在其他地方的另一个矿床中从未观察到的特征,其中包含任何已知矿区中最多的不同元素。当地的地质,构造和岩浆活动是确定成矿作用方式和时间的基本因素。其他关键因素,例如过去一百万年来气候变化导致的海平面上升和下降,对于随后在Lavrion发生的表面氧化也具有重要意义,后者造成了无与伦比的次生矿物多样性。结果,Lavrion矿床包含638种矿物,其中Lavrion是其中23种的类型局部性,几乎占所有已知物种的12%。除了以开采白银而闻名外,这个矿区比世界上任何其他地区都含有更多的矿物质。独特的地质,矿物学,
更新日期:2021-01-14
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