The Early Bombardment History of Mars Revealed in Ancient Megabasins
نویسندگان
چکیده
Minton, W. F. Bottke, H. V. Frey, R. J. Lillis, J. H. Roberts, S. T. Stewart Purdue University, Dept. of Earth & Atm. Sci., 550 Stadium Mall Dr., West Lafayette, IN 47907, [email protected], Southwest Research Institute and NASA Lunar Science Institute, 1050 Walnut St. Ste. 300, Boulder, CO 80302, Geodynamics Branch, Goddard Flight Center, Greenbelt, MD 20771, University of California, Berkeley, Space Sci. Lab, 7 Gauss Way, Berkeley, CA 94720 JHU/APL Space Department, 11100 Johns Hopkins Rd., Laurel, MD 20723 Harvard University, Dept. of Earth and Planetary Sci., 20 Oxford Street, Cambridge, Massachusetts 02138
منابع مشابه
Delivery and Redistribution of Volatiles on Mars during the Basin-forming Epoch: an Overview
Introduction: Samples collected during the Apollo era suggest impact bombardment of the lunar surface was particularly intense early in solar system history [1,2]. There are hints that the lunar cataclysm was actually an event that resurfaced planets throughout the inner solar system [3,4]: meteoritic fragments from the asteroid belt indicate objects between 2 and 5 AU were shock-metamorphosed ...
متن کاملRummaging through Earth’s attic for remains of ancient life
We explore the likelihood that early remains of Earth, Mars, and Venus have been preserved on the Moon in high enough concentrations to motivate a search mission. During the Late Heavy Bombardment, the inner planets experienced frequent large impacts. Material ejected by these impacts near the escape velocity would have had the potential to land and be preserved on the surface of the Moon. Such...
متن کاملPolitical archaeology and the Growth of nationalism in historiography of Iran in early twenty century: the Case of Pirniya’s Ancient History
It is argued that whenever the political situation provides a favourable environment, the archaeological activities have been encouraged to provoke nationalism, and historians in various capacities have used archaeological data and historical records to advocate nationalist agendas. Owing to its rich archaeological and historical past and its contemporary socio-cultural diversity, Iran is, par...
متن کاملMars History Derived from the Mineralogical Data of Omega/mex Acquired during the First Martian Year of Operation
Introduction: The pionneering Mariner and Viking optical mappings have revealed that Mars underwent an intense and active evolution, with tectonic, volcanic, water-driven and erosion processes that left record in a variety of surface structures. At the same time, they showed that Mars did not suffered a global surface reset, as it preserved areas dating from the early heavy bombardment. Major q...
متن کاملAncient igneous intrusions and early expansion of the Moon revealed by GRAIL gravity gradiometry.
The earliest history of the Moon is poorly preserved in the surface geologic record due to the high flux of impactors, but aspects of that history may be preserved in subsurface structures. Application of gravity gradiometry to observations by the Gravity Recovery and Interior Laboratory (GRAIL) mission results in the identification of a population of linear gravity anomalies with lengths of hu...
متن کامل