东帕拉特提斯北大陆架早新世索伦诺维危机的表现形式

IF 0.7 4区 地球科学 Q4 GEOCHEMISTRY & GEOPHYSICS
I. S. Patina, G. M. Gorkin, I. S. Postnikova
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引用次数: 0

摘要

摘要 介绍了对西苏加-里海地区早渐新世鲁佩利期索伦诺维亚沉积的区域结构的研究结果,该地区在新生代代表了东帕拉特提斯北坡。根据对地质和地球物理材料的综合解释,完善了索伦诺维亚期(早渐新世后半期)盆地的地质结构和古地理条件。追溯了渐新世回归期间东帕拉蒂西海平面下降的空间后果。大陆架地区的周期性排水反映在侵蚀不整合结构和埋藏的河流切口中。因此,在古盆地陆架部分的沉积序列(麦科普地震序列)中形成了一个突出的非地貌面,并伴有河流切口。山坡上形成了侵蚀壁架和滑坡体,洼地中堆积了盆地填充复合体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Manifestations of the Early Oligocene Solenovian Crisis on the Northern Shelf of the Eastern Paratethys

Manifestations of the Early Oligocene Solenovian Crisis on the Northern Shelf of the Eastern Paratethys

Manifestations of the Early Oligocene Solenovian Crisis on the Northern Shelf of the Eastern Paratethys

The results of studies of the regional structure of Solenovian deposits of the Early Oligocene Rupelian Stage in the Cisсaucasian–Caspian region, which represented the northern slope of Eastern Paratethys in the Cenozoic, are presented. The geological structure and paleogeographic conditions in the basin during the Solenovian (second half of Early Oligocene) were refined based on a comprehensive interpretation of geological and geophysical materials. The spatial consequences of the sea level drop in Eastern Paratethys during the Oligocene regressions are traced. The periodic draining of shelf areas is reflected in the structure of erosional unconformities and buried river incisions. It has been established that the most significant was the late Solenovian regression with a relative sea level drop by more than 500 m. Consequently, a prominent unconformity surface, complicated by river incisions, was formed in the sedimentary sequence in the shelf part of the paleobasin (Maikop seismic sequence). Erosion ledges and landslide bodies formed on the slopes, and basin-infill complexes were accumulated in depressions.

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来源期刊
Lithology and Mineral Resources
Lithology and Mineral Resources 地学-地球化学与地球物理
CiteScore
1.30
自引率
37.50%
发文量
29
审稿时长
>12 weeks
期刊介绍: Lithology and Mineral Resources is an international peer reviewed journal that publishes articles on a wide range of problems related to the formation of sedimentary rocks and ores. Special attention is given to comparison of ancient sedimentary rock and ore formation with present-day processes. The major part of the journal is devoted to comparative analysis of sedimentary processes on the continents and in oceans, as well as the genetic aspects of the formation of sedimentary and hydrothermal–sedimentary mineral resources. The journal welcomes manuscripts from all countries in the English or Russian language.
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