Evidence for ponding and catastrophic floods in central Valles Marineris, Mars
نویسندگان
چکیده
منابع مشابه
Buried layers beneath south rim of Valles Marineris revealed by central uplift of impact craters
Introduction: Mars Orbiter Camera (MOC) revealed over the last decade light-toned deposits at the surface of Mars [1]. These deposits outcrop mainly between 30°N and 30° S, i.e. in the equatorial regions [2]. They are observed in distinct contexts : 1) In the Valles Marineris canyon system with as thick as 4 km of light toned layers inside the canyons [3], and a few meter thick sequence of ligh...
متن کاملFluvial and lacustrine activity on layered deposits in Melas Chasma, Valles Marineris, Mars
[i] Valley networks on Mars are the most obvious features attesting that different geologic processes and possibly climatic conditions existed in the past. THEMIS images reveal valley networks within Melas Chasma, in Valles Marineris, a Hesperian-age canyon system. The valley networks in Melas Chasma are dense and highly organized, and the heads of the valleys are scattered at different elevati...
متن کاملThe Formation of Valles Marineris, Mars
Introduction: Valles Marineris is the most prominent tectonic feature on Mars, consisting of troughs up to 2000 km in length, 200 km in width, and 10 km in depth. A scenario for trough formation is here proposed that is consistent with the geological and geophysical evidence, and predicts a priori the observed trough depths. The proposed mechanism entails a combination of Tharsis loading over t...
متن کاملStability of rock slopes in Valles Marineris, Mars
[1] New slope measurements from the Mars Orbiter Laser Altimeter (MOLA), in conjunction with the Rock Mass Rating system (RMR), permit inversions of slope height and angle from wallrock and interior deposits within Valles Marineris troughs for strength and lithology. Wallrock (50 < RMR < 65) is stronger than interior deposits (30 < RMR < 55). These values are consistent with layered igneous roc...
متن کاملA Likely Formation Mechanism for the Hematite-rich Spherules in the Equatorial Region of Western Mars
Introduction: The gray crystalline hematite on Mars was detected in three regions, Sinus Meridiani, Aram Chaos and Valles Marineris by the thermal emission spectrometer (TES) onboard the Mars Global Surveyor (MGS) orbiter [e.g.1, 2]. The Mars Exploration Rover (MER) Opportunity confirmed that hematite-rich spherules (~ 4.2 mm) are embedded in sulfur-rich layered outcrops and accumulated on the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2008