Simulating weathering of basalt on Mars and Earth by thermal cycling

Details Simulating weathering of basalt on Mars and Earth by thermal cycling Simulating weathering of basalt on Mars and Earth by thermal cycling

Sep 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010georl..3718201v&link_type=abstract

Geophysical Research Letters, Volume 37, Issue 18, CiteID L18201

Physics

1

Planetary Sciences: Solid Surface Planets: Erosion And Weathering, Hydrology: Weathering (0790, 1625), Planetary Sciences: Solid Surface Planets: Surface Materials And Properties

Scientific paper

Physical weathering induced by heating and cooling may cause rock breakdown on Mars and Earth. We report results from parallel weathering simulations on basalt blocks exposed to diurnal cycles representing Mars-like (two simulation runs from -55 to +20 oC and -75 to +10 oC, 1-100% relative humidity, 4-8 mbar pressure, CO2 atmosphere) and hot arid Earth (23-72o C, 30-100% relative humidity) conditions. Under Earth conditions, thermally pre-stressed blocks showed measurable strength declines, whilst salt pre-treated blocks showed strength gains. Under Mars-like conditions, pre-stressed blocks recorded greater or similar strength declines and salt pre-treated blocks showed more muted strength declines than under Earth conditions. The results imply that on Earth and Mars diurnal cycling of temperature alone can cause deterioration of basalt with a pre-existing stress history. The type of stress history is important, with salt pre-treatment affecting the response of thermally pre-stressed blocks under both Earth and Mars conditions.

Affiliated with

Also associated with

No associations

Rating

Simulating weathering of basalt on Mars and Earth by thermal cycling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Simulating weathering of basalt on Mars and Earth by thermal cycling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Simulating weathering of basalt on Mars and Earth by thermal cycling will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1495539