Tag Archives: basaltic sand

THEMIS: Arabia Terra crater dunes

THEMIS Image of the Day, April 15, 2019. Today’s VIS image is located in an unnamed crater in Arabia Terra. Dark blue in this combination is typically basaltic sands. The presence of sand dunes with this tone indicated that these … Continue reading

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THEMIS: Sand dunes and sheets in Arabia Terra

THEMIS Image of the Day, April 10, 2019. This false-color VIS image is located in an unnamed crater in Arabia Terra. Dark blue tones in false color indicate basaltic sands. These sands have created the dunes seen in this image, … Continue reading

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THEMIS; Rutherford Crater in false color

THEMIS Image of the Day, April 1, 2019. Today’s VIS image shows part of the floor of Rutherford Crater. Blue tones in false color images are indicative of basaltic sand. Rutherford Crater is approximately 107 km (66 miles) in diameter. … Continue reading

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THEMIS: Impact craters in Arabia Terra

THEMIS Image of the Day, March 29, 2019. This false-color VIS image shows parts of several craters located in Arabia Terra. Blue tones in false color images indicated the presence of basaltic sands. The THEMIS VIS camera contains 5 filters. … Continue reading

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THEMIS: Acidalia Planitia in false color

THEMIS Image of the Day, March 27, 2019. This false-color VIS image is located in central Acidalia Planitia. The crater just off the edge at the bottom part of the image is Bonestell Crater. The crater towards the top of … Continue reading

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THEMIS: Northern Terra Sabaea in false color

THEMIS Image of the Day, March 25, 2019. This false-color VIS image shows part of northern Terra Sabaea. Blue tones in false-color images usually indicate basaltic sand. The THEMIS VIS camera contains 5 filters. The data from different filters can … Continue reading

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HiRISE: Layers in Meridiani

Layers in Meridiani. Despite the numerous data gaps with this observation, we can still get a closer look at the layers in Meridiani Planum. The hematite we find in this region is part of a layered sedimentary rock formation about … Continue reading

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THEMIS: Crater dunes in Arabia Terra

THEMIS image of the Day, March 6, 2019. Today’s VIS image is located in Arabia Terra. The crater at the bottom of the image contains a large region of sand dunes. Dark blue in this band configuration indicates basaltic sand. … Continue reading

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THEMIS: Terra Sabaea in false color

THEMIS Image of the Day, March 5, 2019. This false-color image is located between Terra Sabaea and Isidis Planitia basin. Blue tones in this band configuration indicate basaltic sands. The sands are more prevalent in the plains at the upper … Continue reading

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THEMIS: Acidalia Colles in false color

THEMIS Image of the Day, March 4, 2019. This VIS image shows part of Acidalia Colles. The term colles means hill. Dark blue tones in this band configuration typically identify basaltic sands. This “blue” material is found on the plains, … Continue reading

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