Martian Crater Once May Have Held Groundwater-Fed Lake | Aero-News Network
Aero-News Network
RSS icon RSS feed
podcast icon MP3 podcast
Subscribe Aero-News e-mail Newsletter Subscribe

** Airborne/NBAA2014 10.21.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.21.14 **
** Airborne/NBAA2014 10.20.14 ** HD iPad-Friendly -- Airborne/NBAA2014 10.20.14 **
** Airborne 10.17.14 ** HD iPad-Friendly -- Airborne 10.17.14 **

Tue, Jan 22, 2013

Martian Crater Once May Have Held Groundwater-Fed Lake

New Data On The 57-Mile-Diameter Crater Collected By The Mars Reconnaissance Orbiter

A NASA spacecraft is providing new evidence of a wet underground environment on Mars that adds to an increasingly complex picture of the Red Planet's early evolution. The new information comes from researchers analyzing spectrometer data from NASA's Mars Reconnaissance Orbiter (MRO), which looked down on the floor of McLaughlin Crater. The Martian crater is 57 miles in diameter and 1.4 miles deep. McLaughlin's depth apparently once allowed underground water, which otherwise would have stayed hidden, to flow into the crater's interior.

Layered, flat rocks at the bottom of the crater contain carbonate and clay minerals that form in the presence of water. McLaughlin lacks large inflow channels, and small channels originating within the crater wall end near a level that could have marked the surface of a lake.

Together, these new observations suggest the formation of the carbonates and clay in a groundwater-fed lake within the closed basin of the crater. Some researchers propose the crater interior catching the water and the underground zone contributing the water could have been wet environments and potential habitats. The findings are published in Sunday's online edition of Nature Geoscience. "Taken together, the observations in McLaughlin Crater provide the best evidence for carbonate forming within a lake environment instead of being washed into a crater from outside," said Joseph Michalski, lead author of the paper, which has five co-authors. Michalski also is affiliated with the Planetary Science Institute in Tucson, Ariz., and London's Natural History Museum.

Michalski and his co-authors used the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) on MRO to check for minerals such as carbonates, which are best preserved under non-acidic conditions. "The MRO team has made a concerted effort to get highly processed data products out to members of the science community like Dr. Michalski for analysis," said CRISM Principal Investigator Scott Murchie of the Johns Hopkins University Applied Physics Laboratory in Laurel, MD. "New results like this show why that effort is so important."

Launched in 2005, MRO (pictured in artist's rendering) and its six instruments have provided more high-resolution data about the Red Planet than all other Mars orbiters combined. Data is made available for scientists worldwide to research, analyze and report their findings. "A number of studies using CRISM data have shown rocks exhumed from the subsurface by meteor impact were altered early in Martian history, most likely by hydrothermal fluids," Michalski said. "These fluids trapped in the subsurface could have periodically breached the surface in deep basins such as McLaughlin Crater, possibly carrying clues to subsurface habitability."

McLaughlin Crater sits at the low end of a regional slope several hundreds of miles long on the western side of the Arabia Terra region of Mars. As on Earth, groundwater-fed lakes are expected to occur at low regional elevations. Therefore, this site would be a good candidate for such a process. "This new report and others are continuing to reveal a more complex Mars than previously appreciated, with at least some areas more likely to reveal signs of ancient life than others," said MRO project scientist Rich Zurek of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, CA.

(McLaughlin Crater pictured in NASA-provided image)

FMI: www.nasa.gov/mro

Advertisement

More News

Airborne at NBAA--10.20.14: HondaJet, Honeywell Forecast, Gulfstream's G500/G600

Also: Garmin's ADS-B For BizAv, R44s For Jordan, Textron Aviation, Hartzell Props, Clarity Aloft Pro Plus At a news conference early Monday at the 2014 NBAA convention, HondaJet sa>[...]

Airborne 10.17.14: Enstrom Delivers, Flight School Scandal, NBAA2014

Also: Rare O-46 Rebuild, Valor Unveiled, OK's Anti-Fly-In Airport, FAA Screw-Ups, The first Enstrom Model 480B-G has been delivered to Rick Boswell of New Hampshire with the Garmin>[...]

Airborne at NBAA--10.20.14: HondaJet, Honeywell Forecast, Gulfstream's G500/G600

Also: Garmin's ADS-B For BizAv, R44s For Jordan, Textron Aviation, Hartzell Props, Clarity Aloft Pro Plus At a news conference early Monday at the 2014 NBAA convention, HondaJet sa>[...]

Game-Changing NBAA2014 Sponsor Mid-Continent Instruments and Avionics!

Innovation Brings Safe, Certified, Nanophosphate® Lithium Batteries To New Business Aircraft True Blue Power is the first company in the world to achieve FAA TSO and EASA ETSO >[...]

ANN FAQ: Feel The Propwash!

Get Aero-News Delivered To Your E-Mail We know you, like many of our readers, make it a point to check out the latest news and information daily on Aero-News... but did you know th>[...]

blog comments powered by Disqus



Advertisement

Advertisement

Podcasts

Advertisement

© 2007 - 2014 Web Development & Design by Pauli Systems, LC