Tag Archives: collapse pits

THEMIS: Collapse features on flank of Ascraeus Mons

THEMIS Image of the Day, September 5, 2017. This image shows part of the northeastern flank of Ascraeus Mons, along the trend that joins the three large Tharsis volcanoes. The image has a myriad of collapse features from circular to … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , , , , | Comments Off

HiRISE: South polar pit or an impact crater?

It is late summer in the Southern hemisphere, so the Sun is low in the sky and subtle topography is accentuated in orbital images. We see many shallow pits in the bright residual cap of carbon dioxide ice (also called … Continue reading

Posted in Reports | Tagged , , , , , , , , | Comments Off

THEMIS: Lava tube skylights in Daedalia Planum

THEMIS Image of the Day, May 19, 2017. Today’s VIS image show lava flows in Daedalia Planum that originated from Arsia Mons. At lower right, note the three circular “skylights” — places where the roof of an underground lava tube … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , , | Comments Off

HiRISE: Pits and channels of Hebrus Valles

The drainages in this image are part of Hebrus Valles, an outflow channel system likely formed by catastrophic floods. Hebrus Valles is located in the plains of the Northern lowlands, just west of the Elysium volcanic region. Individual channels range … Continue reading

Posted in Reports | Tagged , , , , , , , , | Comments Off

HiRISE: Mesas and pits

What’s up and what’s down? This image covers mesas, or high-standing plateaus, to the north and pits, or low-standing, depressions to the south. If it looks the other way around, then you are not seeing the topography correctly. Remember that … Continue reading

Posted in Reports | Tagged , , , , , , , , | Comments Off

THEMIS: Tractus Catena

THEMIS Image of the Day, July 5, 2016. This VIS image shows part of Tractus Catena, just one of many north/south trending tectonic graben located south of Alba Mons. The features running vertically in the image are part of Tractus … Continue reading

Posted in Reports | Tagged , , , , , , , , , , , | Comments Off

HiRISE: Faulted layers in collapse pits

This image shows a set of coalesced collapse pits in western Valles Marineris. Fine layers are exposed in the walls of the pits, and in some places those layers are displaced by faults. What formed these layers, and what caused … Continue reading

Posted in Reports | Tagged , , , , , , , | Comments Off

HiRISE: Pit near Elysium Mons

Pit near Elysium Mons. Beautiful Mars series.

Posted in Reports | Tagged , , , , , , , , , , | Comments Off

THEMIS: Windstreaks false color

THEMIS Image of the Day, January 30, 2015. The THEMIS VIS camera contains 5 filters. The data from different filters can be combined in multiple ways to create a false color image. These false color images may reveal subtle variations … Continue reading

Posted in Reports | Tagged , , , , , , , , , | Comments Off

HiRISE: Eastern portion of Cerberus Fossae

Visible in this observation is a section of Cerberus Fossae (width approximately 250 meters), which are comprised of a series of rifts present located in Elysium Planitia just north the Martian equator. The fossae (Latin plural for a “ditch” or … Continue reading

Posted in Reports | Tagged , , , , , , , , , , | Comments Off