使用冰川动力学层序地层学的丹麦东南部Hvideklint的地质框架

IF 2 4区 地球科学 Q1 GEOLOGY
S. Pedersen, P. Gravesen
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引用次数: 0

摘要

冰川动力层序地层学为复杂地质资料的分组和分类提供了一个实用的模型,有助于解释第四纪演替中过去的气候和环境发展。本文应用冰川动力学层序地层学原理,对丹麦东南部Møn岛上的Hvideklint复杂的冰川地质格架进行了总结。在重建的Hvideklint地质剖面中,给出了叠加变形Hvideklint的格架。对于冰川构造复合体的构造,海平面以下构造的解释是基于对悬崖剖面的详细新调查,并结合连续近似平衡截面的构造。新的描述得到了木星数据库中钻孔数据的支持。在白垩未发生冰川构造变形的地方,构造深度一般位于海平面以下30 m左右。Hvideklint在海拔20 m处暴露出白垩逆冲片,平衡剖面构造表明Hvideklint冰川构造杂合体的汇流面位于海平面以下80 m左右。在daccimment层和建筑群顶部之间,两个或更多的逆冲断层平面和连接坡道增加了Hvideklint的复杂结构。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The geological framework for Hvideklint, south-east Denmark, using glaciodynamic sequence stratigraphy
Glaciodynamic sequence stratigraphy provides a practical model for grouping and classifying complex geological data to aid interpretation of past climatic and environmental development in Quaternary successions. The principles of glaciodynamic sequence stratigraphy are applied here to summarise the complex glacial geological framework of Hvideklint on the island of Møn, south-east Denmark. The framework of the superimposed deformed Hvideklint is presented in a reconstructed geological cross-section of Hvideklint. For the construction of the architecture of the glaciotectonic complex, the interpretation of structures below sea level was based on a detailed new survey of the cliff section combined with construction of successive approximation balanced cross-sections. The new description is supported by drill hole data from the Jupiter database. Where chalk is not glaciotectonically deformed, the constructed depth to the top-chalk-surface is generally located about 30 m below sea level. In Hvideklint, thrust sheets with chalk are exposed 20 m above sea level, and the balanced cross-section constructions indicate that the décollement surface for a Hvideklint glaciotectonic complex is located about 80 m below sea level. Between the décollement level and the top of the complex, two or more thrust-fault flat-levels and connecting ramps add to the complex architecture of Hvideklint.
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来源期刊
Geus Bulletin
Geus Bulletin GEOLOGY-
CiteScore
2.80
自引率
17.60%
发文量
8
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