Its membership of about 7, individuals also includes physicists, mathematicians, geologists, engineers, and others whose research and educational interests lie within the broad spectrum of subjects comprising contemporary astronomy. The mission of the AAS is to enhance and share humanity's scientific understanding of the universe. The Institute of Physics IOP is a leading scientific society promoting physics and bringing physicists together for the benefit of all. It has a worldwide membership of around 50 comprising physicists from all sectors, as well as those with an interest in physics.
It works to advance physics research, application and education; and engages with policy makers and the public to develop awareness and understanding of physics. Its publishing company, IOP Publishing, is a world leader in professional scientific communications. Nypaver , T. Watters and J. The Author s. Published by the American Astronomical Society.
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Nypaver et al Planet. You need an eReader or compatible software to experience the benefits of the ePub3 file format. What is article data? The Moon ; Tectonics. The timing and scale of lunar tectonism provide a crucial insight into the geologic evolution of Earth's Moon. Within the nearside lunar maria, wrinkle ridges formed during and after the emplacement of the mare basalts as a result of subsidence-induced contraction. Past analyses of lunar wrinkle ridges and associated fault structures have helped to constrain lunar tectonic and thermal history.
However, contractional tectonics in the lunar maria may not be limited to the formation of large-scale structures in the distant geologic past. In contrast to larger, subsidence-induced lunar wrinkle ridges, recent investigations have identified contractional structures within the nearside lunar maria that are dimensionally small and recently formed via a combination of global stresses.
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The identification of those small mare ridges SMRs demonstrated that the lunar nearside maria are subject to compressional stresses that are recently and potentially currently active, but the presence of such features in the lunar farside maria was never investigated. Furthermore, the exact timing of SMR formation and the geometry of the associated fault structures remain poorly constrained.
