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首页> 外文期刊>Geophysical Research Letters >The Utopia Basin revisited: Regional slope and shorelines from MOLA profiles
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The Utopia Basin revisited: Regional slope and shorelines from MOLA profiles

机译：重新审视乌托邦盆地：MOLA资料中的区域坡度和海岸线

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摘要

MOLA profiles indicate that Utopia Planitia, including the Utopia Basin, has been tilted northward by similar to0.025 degrees since formation of the basin but no later than mid-late Hesperian. This tilt could be a relic of the endogenic formation of the global dichotomy in late Noachian to early Hesperian by a process involving subcrustal erosion in the lowland. The Utopia Basin survives as a deep, circular depression within Utopia Planitia. Along its south flank are several horizontal or near horizontal terraces and benches that may be shorelines of an extensive northern lowland ocean and a more restricted lake within the Utopia Basin. The large size (up to 200 km wide) of these putative shorelines represents a major geomorphic problem to be solved. [References: 16]
机译：MOLA资料表明，自从乌托邦盆地形成以来，包括乌托邦盆地在内的乌托邦Planitia一直向北倾斜约0.025度，但不晚于晚中黑世世时期。这种倾斜可能是由于低陆下壳下侵蚀的过程，导致了从Noachian到Hesperian早期的全球二分法的内生形成的遗迹。乌托邦盆地以乌托邦Planitia内的深圆形凹陷生存。沿其南翼有几个水平或接近水平的阶地和长凳，它们可能是广阔的北部低地海洋和乌托邦盆地内更受限制的湖泊的海岸线。这些假定的海岸线的大面积（最大200公里宽）代表了要解决的主要地貌问题。 [参考：16]

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