Tag Archives: THEMIS Image of the Day

THEMIS: South polar layers

THEMIS Image of the Day, June 14, 2019. This VIS image shows part of the south polar cap. The numerous layers that comprise the polar cap are readily visible. The cap was built up over millions of years of deposition … Continue reading

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THEMIS: Tectonic traces in Amenthes Fossae

THEMIS Image of the Day, June 13, 2019. The two linear depressions crossing this VIS image are graben created by tectonic activity. Explore more THEMIS Images of the Day by geological subject.

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THEMIS: The graben of Ceraunius Fossae

THEMIS Image of the Day, June 12, 2019. This VIS image shows part of Cerunius Fossae. The linear depressions are fault bounded features called graben. These features form from tectonic forces that are pulling apart the surface, created space for … Continue reading

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THEMIS: Rough ground in Nilosyrtis

THEMIS Image of the Day, June 11, 2019. Today’s VIS image is located on the margin of the Terra Sabaea highlands and the Nilosyrtis Mensae lowlands. The drop off is very steep – about 18,000 ft. This “edge” circles the … Continue reading

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THEMIS: Summit caldera of Arsia Mons

THEMIS Image of the Day, June 10, 2019. Today’s VIS image shows part of the summit caldera of Arsia Mons. Arsia Mons is the southernmost of the three large Tharsis volcanoes. Extensive lava plains originated from eruptions of this volcano. … Continue reading

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THEMIS: Faulting in Labeatis Fossae

THEMIS Image of the Day, June 7, 2019. The linear depressions in this VIS image were created by tectonic forces. The sides of the depression are faults. Paired faults will allow the block of material between them to “slide down” … Continue reading

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THEMIS: Frost-free southern polar cap features

THEMIS Image of the Day, June 6, 2019. This VIS image shows part of the south polar cap. The dark bands are troughs. The multiple layers of dust and ice that comprise the polar cap are visible in the trough … Continue reading

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THEMIS: Long trough in southern polar cap

THEMIS Image of the Day, June 5, 2019. Today’s VIS image shows part of the south polar cap. This image was taken at the end of southern summer. The dark line running down the image is one of numerous troughs … Continue reading

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THEMIS: Frost-free (almost) south polar ice cap

THEMIS Image of the Day, June 4, 2019. This VIS image shows part of the surface of the south polar cap. Collected at the end of southern summer, most of the ice is frost free and different textures are readily … Continue reading

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THEMIS: South polar ice cap canyon

THEMIS Image of the Day, June 3, 2019. Today’s VIS image shows part of the South Pole. Chasma Australe crosses diagonally through the middle of the image. The layers that comprise the polar cap are visible along the sides of … Continue reading

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