Anorthosites that comprise the bulk of the lunar crust are believed to have formed during solidification of a Lunar Magma Ocean (LMO) in which these rocks would have floated to the surface. This early flotation crust would have formed a thermal blanket over the remaining LMO, prolonging solidification. Geochronology of lunar anorthosites indicates a long timescale of LMO cooling, or re-melting and re-crystallization in one or more late events. To better interpret this geochronology, we model LMO solidification in a scenario where the Moon is being continuously bombarded by returning projectiles released from the Moon-forming giant impact. More than one lunar mass of material escaped the Earth-Moon system onto heliocentric orbits following the giant impact, much of it to come back on returning orbits for a period of 100 Myr. If large enough, these projectiles would have punctured holes in the nascent floatation crust of the Moon, exposing the LMO to space and causing more rapid cooling. We model these scenarios using a thermal evolution model of the Moon that allows for production (by cratering) and evolution (solidification and infill) of holes in the flotation crust that insulates the LMO. For effective hole production, solidification of the magma ocean can be significantly expedited, decreasing the cooling time by more than a factor of 5. If hole production is inefficient, but shock conversion of projectile kinetic energy to thermal energy is efficient, then LMO solidification can be somewhat prolonged, lengthening the cooling time by 50% or more.
Most Rocky Sub-Neptunes are Molten: Mapping the Solidification Shoreline for Gas Dwarf Exoplanets
Institute of Astronomy, University of Cambridge(剑桥大学天文研究所);Department of Earth Sciences, University of Cambridge(剑桥大学地球科学系);Atmospheric, Oceanic, and Planetary Physics, Department of Physics, University of Oxford(牛津大学物理学院大气、海洋与行星物理组);Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);Department of Earth and Planetary Sciences, ETH Zurich(苏黎世联邦理工学院地球与行星科学系)
Shaping the Mantle: The Role of Superheated Core After Giant Impacts
College of Earth and Planetary Sciences, Chengdu University of Technology(成都理工大学地球与行星科学学院);CAS Center for Excellence in Comparative Planetology(中国科学院比较行星学卓越创新中心)
Mantle Differentiation, Mixing and Interior-Exterior Exchange
Kanazawa University(金泽大学);Hiroshima University(广岛大学);GFZ German Research Center for Geosciences(德国地球科学研究中心);ETH Zurich(苏黎世联邦理工学院);University College London(伦敦大学学院)
Atmospheric evolution through outgassing and escape on young molten rocky exoplanets
Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);Institute of Astronomy, University of Cambridge(剑桥大学天文学研究所);Atmospheric Oceanic and Planetary Physics, University of Oxford(牛津大学大气海洋与行星物理系);Netherlands eScience Center(荷兰电子科学中心);Interuniversity Micro Electronics Centre(大学微电子中心);Space Research Organisation Netherlands(荷兰太空研究组织)
A general machine learning model of aluminosilicate melt viscosity and its application to the surface properties of dry lava planets
Université Paris Cité(巴黎城市大学);Institut de physique du globe de Paris(巴黎地球物理研究所);CNRS-UMR 7154(法国国家科学研究中心-7154联合研究单位);Institut Universitaire de France(法国大学研究院);York University(约克大学);ETH Zürich(苏黎世联邦理工学院);Institute of Geochemistry and Petrology(地球化学与岩石学研究所)
Coupled atmospHere Interior modeL Intercomparison (CHILI). I. Evolutionary Modelling -- Primordial Magma Oceans of Earth and Venus
Institute of Astronomy, University of Cambridge(剑桥大学天文学研究所);University of Washington(华盛顿大学);Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);Stanford University(斯坦福大学);National Astronomical Observatory of Japan(日本国立天文台);Laboratoire de Mathématiques de Versailles(凡尔赛数学实验室);Université Paris Cité, Institut de physique du globe de Paris, CNRS(巴黎西岱大学,巴黎地球物理学院,法国国家科学研究中心);University of Central Florida(中佛罗里达大学);Johns Hopkins University(约翰斯·霍普金斯大学);SRON Netherlands Research Organisation(荷兰研究组织SRON);Leiden Observatory, University of Leiden(莱顿大学莱登天文台);School of Physics, University of Bristol(布里斯托大学物理学院);Institut für Geologische Wissenschaften, Freie Universität Berlin(柏林自由大学地质科学研究所)
Geophysical and atmospheric implications of $f$O$_{2}$-dependent melting on rocky exoplanets
Kapteyn Astronomical Institute, University of Groningen(格罗宁根大学卡普坦天文研究所);Netherlands eScience Center(荷兰e科学中心);Interuniversity Micro Electronics Centre(跨大学微电子中心);Institute of Geochemistry and Petrology, Department of Earth and Planetary Sciences, ETH Zürich(苏黎世联邦理工学院地球与行星科学系地球化学与岩石学研究所);Institute of Astronomy, University of Cambridge(剑桥大学天文学研究所)