The formation of peak-ring basins: Working hypotheses and path forward in using observations to constrain models of impact-basin formation
The formation of peak-ring basins: Working hypotheses and path forward in using observations to constrain models of impact-basin formation
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DOI：
10.1016/j.icarus.2015.11.033
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发表时间：
2016-07-15
期刊：
影响因子：
3.2
通讯作者：
Potter, Ross W. K.
中科院分区：
文献类型：
--
作者：
Baker, David M. H.;Head, James W.;Potter, Ross W. K.
撞击盆地提供了了解地壳结构和行星体地层学的窗口；然而，解释盆地物质的地层来源需要了解控制盆地形成和形态的过程。峰环盆地(表现为边缘峰顶和单一的内环峰)提供了对盆地形成过程的重要洞察，因为它们是具有中心峰的复杂陨石坑和较大的多环盆地之间的过渡。来自月球勘测轨道器的新的图像和测高数据以及一套遥感数据集使重新评估月球峰环盆地的起源成为可能。我们综合了月球峰环盆地的形态、光谱和重力观测，并描述了两种形成峰环的工作假说，这两种假说涉及瞬变洞穴向内塌陷的壁和地壳和地幔的大型中心隆起之间的相互作用。然后，在峰环盆地形成的数值模拟的背景下，比较和讨论我们观察到的主要方面，以便为未来的模型改进和发展绘制一条路线。(C)2015 Elsevier Inc.保留所有权利。
Impact basins provide windows into the crustal structure and stratigraphy of planetary bodies; however, interpreting the stratigraphic origin of basin materials requires an understanding of the processes controlling basin formation and morphology. Peak-ring basins (exhibiting a rim crest and single interior ring of peaks) provide important insight into the basin-formation process, as they are transitional between complex craters with central peaks and larger multi-ring basins. New image and altimetry data from the Lunar Reconnaissance Orbiter as well as a suite of remote sensing datasets have permitted a reassessment of the origin of lunar peak-ring basins. We synthesize morphometric, spectroscopic, and gravity observations of lunar peak-ring basins and describe two working hypotheses for the formation of peak rings that involve interactions between inward collapsing walls of the transient cavity and large central uplifts of the crust and mantle. Major facets of our observations are then compared and discussed in the context of numerical simulations of peak-ring basin formation in order to plot a course for future model refinement and development. (C) 2015 Elsevier Inc. All rights reserved.