Tag Archives: University of Arizona

HiRISE: Bedrock delights

Posted on February 4, 2019 by rburnham

Bedrock delights. These gorgeous bedrock formations are located in the Syrtis Major region, which is a low-relief shield volcano. HiRISE Picture of the Day archive [More at links]

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HiRISE: For your consideration

Posted on February 1, 2019 by rburnham

For your consideration. An alien landscape with dust devil streaks and craters slowing fading away into the mists of time. A twilight zone of geology, if you will. (Features like this are often called “thumbprint terrain”.) HiRISE Picture of the … Continue reading →

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HiRISE: Landforms northwest of Herschel Crater

Posted on January 31, 2019 by rburnham

Landforms northwest of Herschel Crater. Herschel Crater is a 304 kilometer impact basin in the Martian Southern Hemisphere. We have imaged the crater enough times to learn that dunes here are not stationary but move over time. The crater is … Continue reading →

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HiRISE: Layers northwest Schiaparelli Crater

Posted on January 30, 2019 by rburnham

Layers northwest Schiaparelli Crater. The objective of this observation is to determine the extent of layers in this part of Schiaparelli Crater. HiRISE Picture of the Day archive [More at links]

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HiRISE: Me and my little friend

Posted on January 29, 2019 by rburnham

Me and my little friend. A very interesting-looking 5-kilometer crater located in Ascraeus Mons, a large shield volcano located in the Tharsis region of the planet Mars. It is the northernmost and tallest of three shield volcanoes collectively known as … Continue reading →

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HiRISE: Positive relief features in Xanthe Terra

Posted on January 28, 2019 by rburnham

Positive relief features in Xanthe Terra. These relief features, which are positively gorgeous, might be inverted streams. Xanthe Terra is a large area on Mars, centered just north of the Martian equator. HiRISE Picture of the Day archive [More at … Continue reading →

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HiRISE: Cross-section of a complex crater

Posted on January 25, 2019 by rburnham

This image shows a cross-section of a complex crater in Terra Cimmeria. Starting in the center, we see a series of peaks with exposed bedrock. These peaks formed during the impact event when material that was originally several kilometers below … Continue reading →

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HiRISE: A first look at dunes

Posted on January 24, 2019 by rburnham

This image shows us a cross-section of a dune field. Dune shape depends on several factors, including the amount of sand present and the local wind directions. This dune field displays several distinct dune morphologies. We see both individual barchan-like … Continue reading →

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HiRISE: Multi-elevation gullies

Posted on January 23, 2019 by rburnham

Gullies probably formed along the bouldery layers in the upper slopes of this unnamed crater within the last few million years. Gullies eroded these crater slopes and transported sediment downslope forming debris aprons multiple times. These older apron surfaces were … Continue reading →

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HiRISE: Impact near the south pole

Posted on January 22, 2019 by rburnham

This image shows a new impact crater that formed between July and September 2018. It’s notable because it occurred in the seasonal southern ice cap, and has apparently punched through it, creating a two-toned blast pattern. The impact hit on … Continue reading →

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