西Cerkljansko地区(斯洛文尼亚西部)南阿尔卑斯山与Dinarides接触处的构造背景

Q3 Earth and Planetary Sciences Geologija Pub Date : 2021-12-28 DOI:10.5474/geologija.2021.011
Jože Čar, J. Jež, Blaž Milanič
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引用次数: 0

摘要

Idrijca山谷的Reka村、Bukovo村和Cerkno附近的Zakriž村之间的地区在地理和地质上属于Dinarides人。该区域由Trnovo推覆体的两个大型内部逆冲块组成,它们在西南方向被推压了几十公里,到达了现在的位置。它们被托尔明推覆体覆盖,托尔明推压体是南阿尔卑斯山脉的最低逆冲单元。Tolmin推覆体从北向南推进,由两个内部逆冲块体和一个较小的中间内片组成。在该地区的西部,南阿尔卑斯山脉和Dinarides山脉之间的接触沿Sovodenj地区断层延伸。尽管所考虑的逆冲单元中的岩石年龄大致相同,但可以识别不同的地层环境。Ladinian-Lower Carnian-Pseudizilian地层的岩石地层特征尤其引人注目。碎屑岩和碳酸盐岩在斯洛文尼亚深海盆地中沉积。在Trnovo和Tolmin推覆体中,Pseudozilian层都出现在岩性特征序列中,但在Tolmin推压体中,它们的厚度比Trnovo推覆体大得多,并不断向上进入Amphyclina层,而在Trnovo推覆体内,Pseudozilian层的序列要薄得多,并且被平台Cordevol白云石覆盖。
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Structural setting at the contact of the Southern Alps and Dinarides in western Cerkljansko region (western Slovenia)
The area between the villages of Reka in the Idrijca Valley, Bukovo and Zakriž near Cerkno belongs geographically and geotectonically to the Dinarides. The area consists of two large inner thrust blocks of the Trnovo nappe, which were thrusted for tens of kilometers in the direction of SW to their present position. They are overlain by the Tolmin nappe, the lowest thrust unit of the Southern Alps. The Tolmin nappe was thrusted from N to S and consists of two inner thrust blocks and a smaller intermediate inner sheet. In the western part of the area the contact between Southern Alps and the Dinarides runs along the regional Sovodenj fault.Although the rocks in the considered thrust units are about the same age, different stratigraphic settings could be recognized. The lithostratigraphic features of the Ladinian-Lower Carnian Pseudizilian beds are particularly striking. Succession of clastic and carbonate rocks was deposited in deep-marine Slovenian basin. In both the Trnovo and Tolmin nappe, Pseudozilian beds occur in the lithologically characteristic sequences but, in the Tolmin nappe, they are developed in a much greater thickness than in the Trnovo nappe and pass continuously upwards into Amphyclina beds, while in the Trnovo nappe, on the other hand, the succession of Pseudozilian beds is much thinner and is overlain by the platform Cordevol dolomite.
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来源期刊
Geologija
Geologija Earth and Planetary Sciences-Geophysics
CiteScore
1.00
自引率
0.00%
发文量
10
审稿时长
10 weeks
期刊最新文献
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