Ductile crust exhumation and extensional detachments in the central Aegean (Cyclades and Evvia Islands).
Ductile crust exhumation and extensional detachments in the central Aegean (Cyclades and Evvia Islands).
复制标题
爱琴海中部（基克拉泽斯群岛和埃夫维亚群岛）的韧性地壳折返和伸展分离。
DOI：
10.1080/09853111.1994.11105259
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发表时间：
1994
期刊：
影响因子：
1.5
通讯作者：
J. Brun
中科院分区：
文献类型：
--
作者：
P. Gautier;J. Brun
根据地震构造、地层学和断层分析研究，爱琴海大陆域至少在13 Ma以来是广泛的“弧后”伸展的场所。这种延伸被记录为与中-新生代希腊造山带有关的叠加构造。早期逆冲推覆的特征包括在两个宽阔的带内的整体韧性变形，这两个带在爱琴海上经历了HP/LT变质作用。这项研究提出了一个结构分析的爱琴海中部地区（基克拉迪群岛和Evvia群岛），特别是研究韧性和脆性变形之间的关系，无论是在现场和区域范围内。伸展似乎是造成高压岩石单元内大部分韧性变形的原因，高压岩石单元经历了渗透性绿片岩相和高级变质叠印。在每一个研究的岛屿上，通过发展一个主要的正常意义上的拆离带到深度，发生了渐进的伸展变形。
AbstractThe Aegean continental domain is known to be the site of widespread “back-arc” extension since at least 13 Ma, on the basis of seismotectonic, stratigraphic and fault analysis studies. This extension is documented to overprint structures related to the Mesozoic-Cenozoic Hellenic orogeny. Features attributed to early thrusting include the overall ductile deformation within two broad belts that have suffered HP/LT metamorphism across the Aegean. This study presents a structural analysis of the central Aegean area (Cyclades and Evvia Islands), examining in particular the relationship between ductile and brittle deformation, both in the field and on a regional scale. Extension appears to be responsible for most of the ductile deformation within HP rock units that have experienced penetrative greenschist facies and higher grade metamorphic over-printing. On each studied island, progressive extensional deformation has occurred through the development of a major normal-sense detachment zone down to depth...