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Tag Archives: valleys
HiRISE: Melas Chasma valleys
Valleys in Melas Chasma. Caption throwback (2008): The interpretation is that the valleys formed by precipitation in the late Hesperian epoch and the water that formed them collected in the basin to produce a lake where sediment was deposited. This … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, Melas Chasma, MRO, NASA, rainfall, University of Arizona, valley networks, valleys
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Evidence for fluvial deposition in Arabia Terra
[Editor’s note: From a paper by Joel Davis and six co-authors recently published in the Journal of Geophysical Research.] A Diverse Array of Fluvial Depositional Systems in Arabia Terra: Evidence for mid‐Noachian to Early Hesperian Rivers on Mars • Fluvial … Continue reading
Posted in Reports
Tagged Arabia Terra, fluvial channels, fluvial deposits, fluvial erosion, fluvial landforms, fluvial processes, inverted channels, lacustrine sediments, lake bed sediments, open-basin lakes, paleolakes, sedimentary deposits, sinuous ridge, valleys
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HiRISE: A valley in Libya Montes
A valley in Libya Montes. The objective of this observation is to examine what looks like a valley with a channel on its bed. The Libya Montes are a highland terrain on Mars up-lifted by the giant impact that created … Continue reading
Posted in Reports
Tagged channels, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Isidis Basin, Libya Montes, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona, valleys
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HiRISE: Valleys in a crater north of Sacra Sulci
Valleys in a crater to the north of Sacra Sulci. Small valleys similar to these have been dated to the Hesperian and Amazonian epochs in other areas of Mars, making them some of the youngest features formed by the flow … Continue reading
Posted in Reports
Tagged High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, MRO, NASA, Sacra Sulci, University of Arizona, valley networks, valleys
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HiRISE: Terrain near Idaeus Fossae
Terrain near Idaeus Fossae. Many valleys occur all over Mars that reveal an extensive ancient history of liquid water erosion. While these valley systems are typically now covered with fine soils and sand dunes, the overall scale and shape of … Continue reading
Posted in Reports
Tagged climate change, fluvial erosion, High Resolution Imaging Science Experiment, HiPOD, HiRISE, HiRISE Picture of the Day, Idaeus Fossae, Mars Reconnaissance Orbiter, MRO, NASA, University of Arizona, valleys
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HiRISE: We found geology in a chaotic place
We found geology in a chaotic place. The terrain here lives up to its description as “chaotic:” we see small hills, mesas, buttes and valleys. This area is called Oxia Palus, and its debris likely came from Ravi Vallis, which … Continue reading
Posted in Reports
Tagged buttes, chaotic terrain, geologic contacts, High Resolution Imaging Science Experiment, hills, HiPOD, HiRISE, HiRISE Picture of the Day, Mars Reconnaissance Orbiter, mesas, MRO, NASA, Oxia Palus, Ravi Vallis, stratigraphy, University of Arizona, valleys
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THEMIS: Crater floor infill and valley
THEMIS Image of the Day, November 2, 2018. This VIS image shows a large linear depression in the center of an unnamed crater in Noachis Terra. This crater and the nearby Maunder and Asimov craters share this odd morphology. The … Continue reading
Posted in Reports
Tagged Arizona State University, Asimov Crater, ASU, crater infill, Mars Odyssey, Maunder Crater, NASA, Noachis Terra, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, valleys
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HiRISE: Tributary valleys near Shalbatana Vallis
Tributary valleys near Shalbatana Vallis. One of the justifications for taking this image was to look for inner valley features such as terraces. Beautiful Mars series. [More at links]
Posted in Reports
Tagged Beautiful Mars, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, Shalbatana Vallis, terraces, University of Arizona, valleys
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THEMIS: Ice-choked Mamers Valles
THEMIS Image of the Day, March 27, 2018. Today’s VIS image shows a section of Mamers Valles, located in Arabia Terra. The smooth material with flowlines that fills the valley channel is likely glacier ice, similar to valley glaciers in … Continue reading
Posted in Reports
Tagged Arabia Terra, Arizona State University, ASU, glaciers, Mamers Valles, Mars Odyssey, mid-latitude glaciers, NASA, rock glaciers, THEMIS, THEMIS Image of the Day, Thermal Emission Imaging System, valleys
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HiRISE: Fresh shallow valleys and fans in north Arabia Terra
Fresh shallow valleys and fans in north Arabia Terra. Beautiful Mars series.
Posted in Reports
Tagged alluvial fans, Arabia Terra, Beautiful Mars, channels, High Resolution Imaging Science Experiment, HiRISE, Mars Reconnaissance Orbiter, MRO, NASA, outwash fans, University of Arizona, valleys
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