MagLab Researcher Uncovers Secrets of Mars Birth from Unique Meteorite
Posted: November 20, 2013
Contacts: Munir Humayun or Kathleen Laufenberg
TALLAHASSEE, Fla. — As NASA prepares to launch a new Martian probe, a MagLab scientist has uncovered what may be the first recognized example of ancient Martian crust. Florida State University Professor Munir Humayuns groundbreaking discoveries about the crust and what it reveals about the Red Planets origins were published this week in Nature.
Humayuns work is based on an analysis of a 4.4 billion-year-old Martian meteorite that was unearthed by Bedouin tribesmen in the Sahara desert. The rock (NWA 7533) may be the first recognized sample of ancient Martian crust and holds a treasure chest of information about the origin and age of the Red Planets crust.
In order to detect minute amounts of chemicals in this meteorite, Humayun and his collaborators performed complex analysis on it using an array of highly sophisticated mass spectrometers in the MagLabs geochemistry department. High concentrations of trace metals such as iridium, an element that indicates meteoritic bombardment, showed that this meteorite came from the elusive cratered area of Mars southern highlands.
This cratered terrain has been long thought to hold the keys to Mars birth and early childhood, said Humayun, a professor in FSUs Department of Earth, Ocean and Atmospheric Science.
While craters cover more than half of Mars, this is the first meteoric sample to come from this area, bringing the first opportunity for researchers to understand Mars early crystal growth.
Using the chemical information found in pieces of soil contained in the meteorite, Humayun was able to calculate the thickness of Mars crust. His calculation aligned with estimates from independent spacecraft measurements and confirms that Mars did not experience a giant impact that melted the entire planet in its early history.
An ancient meteorite (NWA 7533) may be a piece of Mars crust.
Image courtesy Luc Labenne
Using a powerful microprobe at Curtin University in Perth, Australia, the team dated special crystals within the meteorite — called zircons — at an astounding 4.4 billion years old.
This date is about 100 million years after the first dust condensed in the solar system, Humayun said. We now know that Mars had a crust within the first 100 million years of the start of planet building, and that Mars crust formed concurrently with the oldest crusts on Earth and the Moon.
Humayun and his collaborators hypothesize that these trailblazing discoveries are just the tip of the iceberg of what continued research on this unique meteorite will uncover. Further studies may reveal more clues to the impact history of Mars, the nature of Martian zircons and the makeup of the earliest sediments on the Red Planet.
Humayuns international team of collaborators include curator of meteorites Brigitte Zanda with the National Museum of Natural History (the Muséum National dHistoire Naturelle) in Paris; A. Nemchin, M. Grange and A. Kennedy with Curtin Universitys Department of Applied Geology in Perth, Australia; and scientists R. H. Hewins, J. -P. Lorand, C. Göpel, C. Fieni, S. Pont and D. Deldicque.
- Researcher uncovers secrets of Mars birth from unique meteorite, FSU News
- FSU professor studies unique Martian meteorite, FSU Radio
- FSU professor studies unique Martian meteorite, FSU Video
- Meteorite unveils secrets of ancient Mars, CNN
- The Ancient Martian Rock that Fell to Earth, Popular Mechanics
- Mars Meteorite Reveals First Look at Ancient Martian Crust, Space.com
- Stunning meteorite sheds light on infant Mars, Agence France-Presse
- 4.4 Billion-Year-Old Meteorite And The Birth Of Mars, Science 2.0
- Examination Of Martian Meteorite Reveals Clues To Mars’ Ancient Past, Red Orbit
- Mars meteorite 1st look at Red Planets ancient crust, Fox News
- ROCK FROM MARS FOUND in Africa, reveals Red Planets SECRETS, The Register
- Unique Meteorite Reveals Secrets of Mars Birth, Laboratory Equipment
- Meteorite gives scientists first look at ancient Martian crust, NBC News
- Mars meteorite offers clues about Red Planets crust, Mother Nature Network
- Martian meteorite lends clues to red planets history, ABC 15
- Meteorite unveils secrets of ancient Mars, Fox 13 Now
- Mars Black Beauty Meteorite Reveals Red Planets Mysteries, Guardian Express
- Stunning meteorite sheds light on infant Mars, Global Post
- Unique meteorite reveals secrets of ancient Mars, Science Recorder
- Ancient rock is oldest chunk of Mars, The Economic Times
- Meteorite found in the Sahara sheds light on Martian crust, Zee News
- 4.4 billion-year-old meteorite found in the Sahara sheds light on infant Mars, Raw Story
- Meteorite sheds light on infant Mars, Nine MSN
- Meteorite Could be First Known Example of Ancient Mars Surface , Auto World News
- Rock found in Sahara oldest chunk of Mars on Earth?, The Times of India
- Oldest minerals from Mars found on Earth, Physics World
- Mars meteorite helps scientists analyze Red Planets crust, Northern Voices Online
- 4.4 billion year old rock discovered in Sahara Desert may be oldest Martian meteorite, Jagran Post
- Stunning 4.4 billion-year-old meteorite sheds light on infant Mars, Inter Aksyon
- Meteorite found in the Sahara reveals secrets about Martian crust, Truth Dive
The National High Magnetic Field Laboratory develops and operates state-of-the-art, high-magnetic-field facilities that faculty and visiting scientists and engineers use for research. The laboratory is sponsored by the National Science Foundation and the state of Florida. To learn more visit www.magnet.fsu.edu.