Curiosity bores into Kimberley rock after inspection unveils enticing bumpy textures

May 01, 2014 by Ken Kremer, Universe Today
Curiosity snaps selfie at Kimberley waypoint with towering Mount Sharp backdrop on April 27, 2014 (Sol 613). Inset shows MAHLI camera image of rovers mini-drill test operation on April 29, 2014 (Sol 615) into “Windjama” rock target at Mount Remarkable butte. Mastcam color photo mosaic assembled from raw images snapped on Sol 613, April 27, 2014. Credit: NASA/JPL/MSSS/Marco Di Lorenzo/Ken Kremer – kenkremer.com

Three days ago, the burning question was "To Drill or not to Drill?"

The answer has come fast and furious – "Drill, Baby, Drill !"

After spending the weekend inspecting an enticing slab of sandstone rock at "Kimberley", the team directed NASA's Curiosity rover to bore a test hole into a Martian rock target called "Windjama" on Tuesday, April 29, Sol 615, that exhibited interesting bumpy textures.

"A decision about full drilling is planned in coming days," NASA press officer Guy Webster told me today.

Engineers commanded Curiosity to perform the so called "mini-" operation at "Windjama"- as the site of the robots third drilling operation since touching down on the Red Planet back in August 2012.

The 1 ton robot drilled a test hole 0.63 inch (1.6 centimeters) in diameter and to a depth of about 0.8 inch (2 centimeters) using the hammering drill at the terminus of the robotic arm.

Windjama is an outcrop of sandstone located at the base of a Martian butte named Mount Remarkable at "The "Kimberley" waypoint – a science stopping point reached by the rover in early April 2014 along its epic trek to towering Mount Sharp, the primary destination of the mission.

Hazcam fisheye camera image shows Curioisty drilling into “Windjama” rock target on April 29, 2014 (Sol 615). Flattened and colorized image shows Mount Remarkable butte backdrop. Credit: NASA/JPL/Marco Di Lorenzo/Ken Kremer – kenkremer.com

The team is evaluating the resulting hole and powdery, gray colored tailings with the arm's high resolution MAHLI camera and other instruments to determine whether to follow up with a deep to a depth of 2.5 inches (6.4 centimeters).

To prepare for the "mini drill" operation, Curiosity first brushed the candidate drill site off with the wire-bristle Dust Removal Tool (DRT) this past weekend, to clear away obscuring Red Planet dirt and dust hindering observations with the cameras and spectrometers.

"In the brushed spot, we can see that the rock is fine-grained, its true color is much grayer than the surface dust, and some portions of the rock are harder than others, creating the interesting bumpy textures," said Curiosity science team member Melissa Rice of the California Institute of Technology, Pasadena., in a NASA statement

"All of these traits reinforce our interest in drilling here in order understand the chemistry of the fluids that bound these grains together to form the rock."

"Windjana," is named after a gorge in Western Australia.

Why was Kimberley chosen as a science destination ?

Multisol composite photo mosaic shows deployment of Curiosity’s rovers robotic arm and APXS X-ray spectrometer onto the ‘Winjana’ rock target at Mount Remarkable for evaluation as missions third drill target inside Gale Crater on Mars. The colorized navcam raw images were stitched together from several Martian days up to Sol 612, April 26, 2014. Credit: NASA/JPL-Caltech/Ken Kremer – kenkremer.com/Marco Di Lorenzo

"The Kimberley" has interesting, complex stratigraphy," Curiosity Principal Investigator John Grotzinger, of the California Institute of Technology, Pasadena, told me.

If the team decides that Windjana meets the required criteria, Curiosity will bore a full depth hole into the sandstone rock, and then pulverize and filter it prior to delivery to the two onboard miniaturized chemistry labs – SAM and CheMin.

Windjana would be the first sandstone drill target, if selected. The first two drill locations at 'John Klein' and 'Cumberland' inside Yellowknife Bay were mudstone.

Curiosity departed the ancient lakebed at the Yellowknife Bay region in July 2013 where she discovered a habitable zone with the key chemical elements and a chemical energy source that could have supported microbial life billions of years ago – and thereby accomplished the primary goal of the mission.

Explore further: Target on Mars looks good for NASA rover drilling

add to favorites email to friend print save as pdf

Related Stories

Image: Mars rover Curiosity scoping out next study area

Apr 04, 2014

(Phys.org) —On Wednesday, NASA's Curiosity Mars rover drove the last 98 feet feet (30 meters) needed to arrive at a site planned since early 2013 as a destination for studying rock clues about ancient environments ...

Recommended for you

Image: Sunset over the Gulf of Mexico

11 hours ago

From the International Space Station, Expedition 42 Flight Engineer Terry W. Virts took this photograph of the Gulf of Mexico and U.S. Gulf Coast at sunset and posted it to social media on Dec. 14, 2014.

Venus Express goes gently into the night

11 hours ago

ESA's Venus Express has ended its eight-year mission after far exceeding its planned life. The spacecraft exhausted its propellant during a series of thruster burns to raise its orbit following the low-altitude ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.