Tag Archives: Arabia Terra

HiRISE: Layers in Danielson Crater

This image shows sedimentary rock and sand within Danielson Crater, an impact crater 67 kilometers in diameter, located in the southwest Arabia Terra region of Mars. The rock was formed millions or billions of years ago when loose sediments settled … Continue reading

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THEMIS: Pits & channels in Arabia Terra

THEMIS Image of the Day, August 27, 2019. The pits and channels in the VIS image are located along the margin between Arabia Terra and Acidalia Planitia. Arabia Terra is one of the oldest surface regions on Mars and contains … Continue reading

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HiRISE: Wonderful world of Arabia Terra

The wonderful world of Arabia Terra. It’s one of our favorite regions, not the least because of the incredible layered sedimentary rock but also for the composition of the bedrock. Arabia Terra might be one of the oldest regions on … Continue reading

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HiRISE: Sedimentary infill

Interaction. This crater and many of those surrounding it are filled with layered sedimentary material. There are various theories for the origin of this layered fill, and this image will help to constrain the relationship of the fill to the … Continue reading

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THEMIS: Northern Arabia Terra channel

THEMIS Image of the Day, August 8, 2019. The margin between Arabia Terra and the surrounding lowlands is dissected by numerous named and unnamed channels. Today’s VIS image shows part of an unnamed channel in the region. The channel floor … Continue reading

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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

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THEMIS: Channels on the edge of Arabia Terra

THEMIS Image of the Day, July 18, 2019. This VIS image is located on the margin of Arabia Terra and Acidalia Planitia. The channel features were created by fluids running from the highland of Arabia Terra into the lower elevations … Continue reading

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THEMIS: Unusual feature in Arabia Terra crater

THEMIS Image of the Day, July 5, 2019. Today’s VIS image shows a complex block of material located on the floor of an unnamed crater in Arabia Terra. The feature is offset from the center of the circular depression and … Continue reading

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HiRISE: Mind your deposit

Mind your deposit. The CRISM instrument on MRO (a spectrometer) has detected clay deposits here that is a very uncommon sedimentary setting. HiRISE Picture of the Day archive. [More at links]

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THEMIS: Arabia Terra crater in false color

THEMIS Image of the Day, May 23, 2019. Today’s false color image shows part of an unnamed crater in Arabia Terra. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to … Continue reading

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