Crustal attributes of lunar basins from terrain-correlated free-air gravity anomalies
نویسندگان
چکیده
منابع مشابه
Crustal Thickness Evidence for More Previously Unrecognized Large Lunar Basins
Lunar topographic data revealed a large population of large impact basins not previously recognized by standard photogeologic mapping. Crustal thickness model data reveal the presence of even more. The total number of lunar basins > 300 km diameter may exceed 150, more than 3 times that determined by photogeologic mapping alone. Introduction: Photogeologic mapping suggested the cumulative numbe...
متن کاملGRAIL gravity observations of the transition from complex crater to peak-ring basin on the Moon: Implications for crustal structure and impact basin formation
High-resolution gravity data from the Gravity Recovery and Interior Laboratory (GRAIL) mission provide the opportunity to analyze the detailed gravity and crustal structure of impact features in the morphological transition from complex craters to peak-ring basins on the Moon. We calculate average radial profiles of free-air anomalies and Bouguer anomalies for peak-ring basins, protobasins, and...
متن کاملLunar impact basins and crustal heterogeneity: new Western limb and far side data from galileo.
Multispectral images of the lunar western limb and far side obtained from Galileo reveal the compositional nature of several prominent lunar features and provide new information on lunar evolution. The data reveal that the ejecta from the Orientale impact basin (900 kilometers in diameter) lying outside the Cordillera Mountains was excavated from the crust, not the mantle, and covers pre-Orient...
متن کاملLunar Crustal History from Isotopic Studies of Lunar Anorthosites
Anorthosites occur ubiquitously within the lunar crust at depths of 3-30 km in apparent confirmation of the Lunar Magma Ocean (LMO) hypothesis [1,5]. We will present recent chronological studies of anorthosites [2] that are relevant both to the LMO hypothesis and also to the lunar cataclysm hypothesis. Old (ca. 4.4 Ga) Sm-Nd ages have been determined for some Apollo 16 anorthosites, and primiti...
متن کاملThe Collapse of Super-isostasy: the Thermal Evolution of Large Lunar Impact Basins and a Volcanic Intrusion Model for Lunar Mascon Gravity Anomalies
2194, 2011. [18] Kiefer et al., AGU Fall Meeting abstract P33G-02, 2011. [19] Ivanov et al., GSA Special Paper 465, pp. 29-49, 2010. [20] Potter et al., LPSC 42, abstract 1452, 2011. [21] Potter et al., Icarus, in review, 2011. [22] Stewart, LPSC 42, abstract 1633, 2011. [23] Li and Kiefer, GRL 34, 2007GL030544, 2007. [24] Kiefer and Li, GRL 36, 2009GL039827, 2009. [25] Ghods and ArkaniHamed, J...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Geophysical Research
سال: 2003
ISSN: 0148-0227
DOI: 10.1029/2000je001446