2023
DOI: 10.1029/2022je007533
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Timing and Origin of Compressional Tectonism in Mare Tranquillitatis

Abstract: The Moon's surface hosts a variety of extensional and compressional tectonic features, which recorded the history of the acting regional and global stress systems. Compressional tectonism was initiated with the emplacement of the mare basalts and the shift of net global extension to net global contract at ∼3.6 Ga, which led to the formation of the two major compressional tectonic landforms: lobate scarps and wrinkle ridges (

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Cited by 4 publications
(4 citation statements)
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“…After the radial expansion, the Moon begins to radially contract at around 1 Gyr after the start of the calculation (Figure 4). The timing of contraction is consistent with the beginning of compressive tectonics on the Moon (Frueh et al, 2023;Yue et al, 2017). The Moon in our model contracts at a rate of approximately −1.0 km Gyr −1 in the past billion years (Table 3), which is also consistent with the estimates obtained from observations of fault scarps on the Moon (e.g., Clark et al, 2017;Klimczak, 2015;van der Bogert et al, 2018;Watters et al, 2010).…”
Section: The Radial Expansion/contractionsupporting
confidence: 89%
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“…After the radial expansion, the Moon begins to radially contract at around 1 Gyr after the start of the calculation (Figure 4). The timing of contraction is consistent with the beginning of compressive tectonics on the Moon (Frueh et al, 2023;Yue et al, 2017). The Moon in our model contracts at a rate of approximately −1.0 km Gyr −1 in the past billion years (Table 3), which is also consistent with the estimates obtained from observations of fault scarps on the Moon (e.g., Clark et al, 2017;Klimczak, 2015;van der Bogert et al, 2018;Watters et al, 2010).…”
Section: The Radial Expansion/contractionsupporting
confidence: 89%
“…This activity accounts for the lunar mare volcanism that gradually declined after the peak (e.g., Hiesinger et al., 2003). The model which accounts for the observed mare volcanism is also consistent with the radial expansion/contraction history of the Moon, which globally expanded in its earlier history until around 3.8 Gyr ago and then contracted with time (e.g., Andrews‐Hanna et al., 2013; Frueh et al., 2023). In our model, the Moon expands by a few kilometers for the first several hundred million years and then contracts over time (Figure 4).…”
Section: Discussionsupporting
confidence: 65%
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“…The lunar crust has undergone structural deformation from numerous stress mechanisms at regional and global scales throughout lunar history (e.g., Schultz 1976;Melosh 1978;Watters 1988Watters , 2022. Geologically recent lunar tectonism and crustal deformation is expressed by small-scale, morphologically undegraded tectonic surface features such as lobate scarps (e.g., Watters et al , 2015Banks et al 2012;Clark et al 2017;van der Bogert et al 2018), graben (Watters et al 2012;French et al 2015;Clark et al 2022), and wrinkle ridges (e.g., Lu et al 2019;Williams et al 2019;Nypaver & Thomson 2022a;Frueh et al 2023) and is supported by shallow moonquakes (e.g., Nakamura et al 1982) recorded by the Apollo Passive Lunar Seismic experiment and their possible association with lobate scarps (Watters et al 2019). Such structures have generally been interpreted as the result of a combination of stresses from solid body tides, orbital recession, and global contraction acting on the lunar lithosphere (Watters et al 2019) in the last ∼1.0 Ga of lunar history (e.g., van der Bogert et al 2018).…”
Section: Introductionmentioning
confidence: 99%