New morphostructural subdivision of the Western Carpathians: An approach integrating geodynamics into targeted morphometric analysis

New morphostructural subdivision of the Western Carpathians: An approach integrating geodynamics into targeted morphometric analysis
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西喀尔巴阡山脉的新形态结构细分:将地球动力学整合到目标形态测量分析中的方法

DOI:
10.1016/j.tecto.2010.04.003
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
H. Zeyen
H. Zeyen
中科院分区:
--
文献类型:
--
作者:
J. Minár;M. Bielik;M. Kováč;D. Plašienka;I. Barka;M. Stankoviansky;H. Zeyen

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将一种基于目标形态计量学分析和多元统计方法的新的形态结构定界方法应用于西喀尔巴阡山脉。9个具体的形态结构区域和16个分区被定义为对之前的区域定性细分的改进。将地球动力学整合到目标形态计量学分析中是对划定区域进行更好解释的先决条件。因此,西喀尔巴阡山脉的新分区首先反映了控制现今地形发展的上新世-第四纪地球动力学。研究结果还有助于了解西喀尔巴阡山脉基本圆顶状形态结构形成的时间(始于400万至600万年前,主要阶段持续到晚上新世,中更新世以来加速隆起)及其形成机制。中中新世的伸展对西喀尔巴阡山脉独特的盆地和山脉马赛克的发展具有重要意义。古老的构造边界向新的形态构造区域的投射,以及在西喀尔巴阡山脉南缘和北缘年轻的形态构造体系(N-S和W-E)的日益流行,可能是西喀尔巴阡山脉在形态构造发育的最后阶段逐渐向周围低地扩张的标志。
A new quantitative method of morphostructure delimitation based on targeted morphometric analyses and multivariate statistical methods was applied to the Western Carpathians. Nine specific morphostructural regions and sixteen subregions were defined as an improvement on the preceding qualitative subdivision of the area. The integration of geodynamics into the targeted morphometric analysis represents a prerequisite for better interpretability of the delimited regions. The new subdivision of the Western Carpathians therefore reflects first of all the Pliocene–Quaternary geodynamics that controls the development of the present-day relief. The results also help to understand the timing of the basic dome-like morphostructural formation of the Western Carpathians (which began 4–6million years ago, with the main stage continuing until the Late Pliocene and accelerated uplift taking place since the Middle Pleistocene), as well as the mechanism of its formation. The importance of the Middle Miocene extension for the development of the basin-and-mountain mosaic unique to the Western Carpathians is documented. The projection of the older structural boundaries into the new morphostructural regions and the increasing prevalence of the young morpholineament systems (N–S and W–E) on the southern and northern periphery of the Western Carpathians could be an indication of the gradual spreading of the Western Carpathians into the surrounding lowlands during the last stage of the morphotectonic development.