Recent Tectonic Activity in and Around the Posidonius Crater, Moon

IF 3.9 1区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS
K. B. Kimi, S. Vijayan, K. S. Sharini,  Harish, S. Tuhi, Anil Chavan, R. K. S. Priya
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引用次数: 0

Abstract

Tectonic structures such as wrinkle ridges, lobate scarps, small-scale graben, and tectonic pits reveal the recent lunar activity and complex deformational processes. Despite numerous studies, the northeastern region of the Mare Serenitatis basin, including the Posidonius crater, has yet to be studied in detail. This research presents a comprehensive analysis of tectonic structures in this region, revealing ∼808 km of wrinkle ridges, ∼286 km of lobate scarps, ∼346 km of small-scale graben, and ∼269 tectonic pits. We identified 412 craters deformed by wrinkle ridges, 55 craters by lobate scarps, and 108 craters by small-scale graben, suggesting extensive recent deformation. Chronological analysis of wrinkle ridges and lobate scarps revealed young ages ranging from 29 9 + 10 ${\sim 29}_{-9}^{+10}$ Ma to ∼120 ± 30 Ma close to the crater, whereas Posidonius crater resurfaced floor age tend to 2.8 0.5 + 0.4 ${\sim} {2.8}_{-0.5}^{+0.4}$ Ga. Our study suggests that the blind thrust fault deformed the western floor of the Posidonius crater, with small-scale graben with pits plausibly developed during the reactivation. Orthogonal transitions that occur between adjacent wrinkle ridges and lobate scarps in the study area could be a splay fault of the blind thrust fault and likely formed during the reactivation. This reactivation plausibly resulted from a combination of recession stresses, diurnal tidal stresses, and global contraction. Additionally, a combination of complex processes─intrusion, subsidence, and tectonics associated with the blind thrust fault plausibly influenced Rima Posidonius. Overall, this study suggests that the northeastern region of the Mare Serenitatis basin witnessed recent tectonic activity and could be a potential site for future exploration missions.

月球波西多尼乌斯环形山及其周围近期的构造活动
褶皱脊、裂片崖、小尺度地堑、构造坑等构造构造揭示了月球近期的活动和复杂的变形过程。尽管进行了大量的研究,但塞雷尼塔蒂斯海盆地的东北部地区,包括波西多尼乌斯陨石坑,还没有得到详细的研究。本次研究对该地区的构造构造进行了综合分析,发现了~ 808 km的褶皱脊、~ 286 km的叶状陡坡、~ 346 km的小尺度地堑和~ 269个构造坑。我们确定了412个陨石坑由褶皱脊变形,55个陨石坑由叶状陡坡变形,108个陨石坑由小规模地堑变形,表明最近有广泛的变形。对皱纹脊和叶状陡坡的年代学分析显示,其年龄范围为~ 29−9 +10 ${\sim 29}_{-9}^{+10}$陨石坑附近的Ma至~ 120±30 Ma,而Posidonius陨石坑表面的地表年龄趋于~ 2.8−0.5 +0.4 ${\sim} {2.8}_{-0.5}^{+0.4}$ Ga。我们的研究表明,波西多尼斯陨石坑西底的变形是由隐伏逆冲断层造成的,在恢复活动期间可能发育了小型地堑。研究区相邻褶皱脊与叶状陡坡之间的正交过渡可能是盲逆冲断层的展向断层,可能是在再活化过程中形成的。这种重新激活似乎是由衰退压力、日潮汐压力和全球收缩共同造成的。此外,与盲目逆冲断层相关的侵入、沉降和构造等复杂过程的组合可能影响了Rima Posidonius。总的来说,这项研究表明,Mare Serenitatis盆地的东北部地区见证了最近的构造活动,可能是未来勘探任务的潜在地点。
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来源期刊
Journal of Geophysical Research: Planets
Journal of Geophysical Research: Planets Earth and Planetary Sciences-Earth and Planetary Sciences (miscellaneous)
CiteScore
8.00
自引率
27.10%
发文量
254
期刊介绍: The Journal of Geophysical Research Planets is dedicated to the publication of new and original research in the broad field of planetary science. Manuscripts concerning planetary geology, geophysics, geochemistry, atmospheres, and dynamics are appropriate for the journal when they increase knowledge about the processes that affect Solar System objects. Manuscripts concerning other planetary systems, exoplanets or Earth are welcome when presented in a comparative planetology perspective. Studies in the field of astrobiology will be considered when they have immediate consequences for the interpretation of planetary data. JGR: Planets does not publish manuscripts that deal with future missions and instrumentation, nor those that are primarily of an engineering interest. Instrument, calibration or data processing papers may be appropriate for the journal, but only when accompanied by scientific analysis and interpretation that increases understanding of the studied object. A manuscript that describes a new method or technique would be acceptable for JGR: Planets if it contained new and relevant scientific results obtained using the method. Review articles are generally not appropriate for JGR: Planets, but they may be considered if they form an integral part of a special issue.
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