03.21.2017 Break in Raised Tread on Curiosity Wheel
02.27.2017 Swirling Dust in Gale Crater, Mars, Sol 1613
02.27.2017 Dust Devil Passes Near Martian Sand Dune
02.27.2017 Sand Moving Under Curiosity, One Day to Next
12.13.2016 Now and Long Ago at Gale Crater, Mars
12.13.2016 Where's Boron? Mars Rover Detects It
10.03.2016 Curiosity Self-Portrait at 'Murray Buttes'
10.03.2016 Butte 'M9a' in 'Murray Buttes' on Mars
09.19.2016 Ribbon Cutting
09.09.2016 Farewell to Murray Buttes (Image 5)
09.09.2016 Farewell to Murray Buttes (Image 4)
09.09.2016 Farewell to Murray Buttes (Image 3)
09.09.2016 Farewell to Murray Buttes (Image 2)
09.09.2016 Farewell to Murray Buttes (Image 1)
08.26.2016 Out-of-this-World Records
03.30.2016 Erisa Hines
03.30.2016 Buzz Aldrin
02.12.2016 Women in Science
02.09.2016 Adam Steltzner, a JPL engineer
01.27.2016 Night Close-up of Martian Sand Grains
01.27.2016 Curiosity Self-Portrait at Martian Sand Dune
12.17.2015 Alteration Effects at Gale and Gusev Craters
12.17.2015 Full-Circle View Near 'Marias Pass' on Mars
12.11.2015 Surface Close-up of a Martian Sand Dune
12.11.2015 Martian Sand Disturbed by Rover Wheel
Martian Rock's Evidence of Lake CurrentsCross-bedding seen in the layers of this Martian rock is evidence of movement of water recorded by waves or ripples of loose sediment the water passed over.
This image was acquired by the Mast Camera (Mastcam) on NASA's Curiosity Mars rover, at a target called "Whale Rock" in the basal geological unit of Mount Sharp. The Mastcam's left-eye camera took it during the 796th Martian day, or sol, of Curiosity's work on Mars (Nov. 2, 2014).
The color has been approximately white-balanced to resemble how the scene would appear under daytime lighting conditions on Earth. Figure A is a cropped version with a superimposed scale bar of 30 centimeters (about 12 inches) just beneath cross-bedding, which is evident in the layers at angles to each other.
This example of cross-bedding shows evidence of small "climbing" ripples that migrate on top of each other (just above "10" in scale bar of Figure A). This suggests currents of water entered into a lake basin, possibly flowing down the front of a delta, and then spread out across the lake floor, slowing down, and depositing sediment.
The location of Whale Rock within the "Pahrump Hills" outcrop in the Murray formation at the base of Mount Sharp is indicated on an earlier Mastcam view at http://photojournal.jpl.nasa.gov/catalog/PIA19039.
NASA's Jet Propulsion Laboratory, a division of the California Institute of Technology, Pasadena, manages the Mars Science Laboratory Project for NASA's Science Mission Directorate, Washington. JPL designed and built the project's Curiosity rover. Malin Space Science Systems, San Diego, built and operates the rover's Mastcam. For more information about Curiosity, visit http://www.nasa.gov/msl and http://mars.nasa.gov/msl/.
Image Credit: NASA/JPL-Caltech/MSSS