Analog experiments of lava flow emplacement

Morphology and emplacement of a long channeled lava flow near Ascraeus Mons Volcano, Mars

[1] Channeled lava flows, hundreds of kilometers long, are common on the lower flanks of the Tharsis Montes on Mars. Our analysis of a 690-km-long lava flow along the southwest perimeter of Ascraeus Mons shows that it was emplaced on low local slopes (<0.3 ), with a deep channel ( 20 m), and at high effusion rates (19,000–29,000 m/s) calculated from the Graetz number. These parameters are simil...

Emplacement of long lava flows on planetary surfaces

Three long lava flows on Mars, Venus, and the Moon were examined in order to evaluate their possible emplacement rate and condition. On the Moon, flows o f the lay1 (phase 111) effusion within the Imbrium impact basin were examined using Apollo photography. The longest phase 111 flow can be followed for 250 km, terminating -400 km from the probable source vent. This flow has a width of 10 t o 2...

Petrographic Textures and Insights into Basaltic Lava Flow Emplacement on Earth,

Emplacement of the youngest flood lava on Mars: A short, turbulent story

0019-1035/$ see front matter 2009 Published by doi:10.1016/j.icarus.2009.09.011 * Corresponding author. Address: US Geological Su Program, 2255 N. Gemini Dr., Flagstaff, AZ 86001, Un E-mail address: [email protected] (W.L. Jaeger). Recently acquired data from the High Resolution Imaging Science Experiment (HiRISE), Context (CTX) imager, and Compact Reconnaissance Imaging Spectrometer for Mars (C...

Analysis of Vesicular Basalts and Lava Emplacement Processes for Application as a Paleobarometer/Paleoaltimeter

We have developed a method for determining paleoelevations of highland areas on the basis of the vesicularity of lava flows. Vesicular lavas preserve a record of paleopressure at the time and place of emplacement because the difference in internal pressure in bubbles at the base and top of a lava flow depends on atmospheric pressure and lava flow thickness. At the top of the flow, the pressure ...