Characteristic landforms and geomorphic features associated with impact structures: Observations at the Dhala structure, north-central India,Earth Surface Processes and Landforms

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Characteristic landforms and geomorphic features associated with impact structures: Observations at the Dhala structure, north-central India
Earth Surface Processes and Landforms ( IF 2.8 ) Pub Date : 2021-03-10 , DOI: 10.1002/esp.5115
Anuj Kumar Singh ₁ , Jayanta Kumar Pati _{1,

2} , Rajiv Sinha ₃ , Wolf Uwe Reimold ₄ , Kuldeep Prakash ₁ , Mohammad Nadeem ₁ , Shivanshu Dwivedi ₁ , Dhananjay Mishra ₁ , Akhil Kumar Dwivedi ₁

Affiliation

Geomorphological study of some of the just more than 200 known terrestrial impact structures has demonstrated that despite extensive degradation, important geomorphological keys, such as drainage pattern, topographic signatures, erosional landforms, and depositional features, can still be assessed. They can provide possible indicators to assist in the recognition of further impact structures, especially on Precambrian shields and cratonic landmasses. This study documents the surface features and landforms of the Paleoproterozoic, about 11 km diameter Dhala impact structure in India. The Dhala structure has an estimated age that is constrained stratigraphically between 1.7 and 2.5 Ga. This structure is deeply eroded, and barely has a morphological resemblance to other known terrestrial or extraterrestrial impact structures. We have analyzed the operative surface-forming processes for the Dhala area.

中文翻译：

与撞击结构相关的特征地貌和地貌特征：印度中北部 Dhala 结构的观测

对 200 多个已知陆地撞击结构中的一些进行地貌学研究表明，尽管严重退化，但仍可以评估重要的地貌关键，例如排水模式、地形特征、侵蚀地貌和沉积特征。它们可以提供可能的指标来帮助识别进一步的撞击结构，特别是在前寒武纪地盾和克拉通大陆上。这项研究记录了印度古元古代、直径约 11 公里的 Dhala 撞击结构的表面特征和地貌。Dhala 结构的估计年龄在 1.7 到 2.5 Ga 之间受地层限制。该结构受到深度侵蚀，与其他已知的地球或外星撞击结构几乎没有形态相似之处。

更新日期：2021-03-10

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