Tag Archives: volcanic activity

Mars’ oceans formed early, with a possible assist from volcanism

Posted on March 19, 2018 by rburnham

A new scenario seeking to explain how Mars’ putative oceans came and went over the last 4 billion years implies that the oceans formed several hundred million years earlier and were not as deep as once thought. The proposal [published … Continue reading →

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

HiRISE image: Fissure near Cerberus Fossae with tectonic morphologies

Posted on January 22, 2014 by rburnham

The linearity of the volcanic vent shown in this HiRISE image, in conjunction with evidence of lava flow from the vent, suggests control by combined volcano-tectonic processes…. [More at link]

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

Supervolcanos in Arabia on Mars: Update

Posted on October 4, 2013 by rburnham

The idea of giant volcanos erupting in Arabia was proposed by Joseph Michalski (Planetary Science Institute) in a talk at the Lunar and Planetary Science Conference in March 2013. Michalski and coauthor Jacob Bleacher (NASA Goddard Space Flight Center) have … Continue reading →

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

Touching Mars from Earth

Posted on August 28, 2012 by rburnham

Remote sensing of Mars usually happens when spacecraft sensors look down from orbit around the Red Planet. But sensors on Earth can also get in on the fun, especially when they actively reach out to the planet via radio waves. … Continue reading →

Posted in Reports | Tagged , , , , , , , , , , | 1 Comment

Cracks in the basement

Posted on August 11, 2011 by rburnham

When geological forces open a crack in bedrock, molten magma can squeeze in and widen it, after which the magma cools and hardens in place. The result is a dike, and such features let geologists delve into an outcrop’s history … Continue reading →

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