Hi list,
Thought I would throw this on the list also. I have put it on before but have edited it and added to it. Again if anyone can see any problems let me know. Best!
--AL Mitterling
The Reason Martian Meteorites Are From Mars
By AL MitterlingA. Martian Meteorites are (achondrite) or altered material. Which indicates and requires a larger parent body.
B. A young crystallization age is present in most Mars meteorites, called SNC’s and shows recent activity.
C. Mars has a smaller amount of gravity making escape easier. Also it’s easier for material to loose energy and fall toward the Sun (and Earth) rather than gain energy and leave the solar system.
D. Several Man made probes have been to Mars and performed quanitive chemical analyze of Mars rocks, soil and atmospheric content from their sites. (Viking 1,2, Pathfinder, Spirit and Opportunity) This showed an excellent connection in the past and exact chemical composition to the Shergotti’s during the recent missions. All Martian Meteorites have some common similarities which pair them.
E. Geological age matches activity on Mars (volcanoes). Martian Meteorites are: .3 billion, 1.3 billion to 2 billion, 4.5 billion Y.O. (southern area of Mars) best match in the solar system for this material.
F. Spectral analyze matches of dark regions to the shergotti’s meteorites. (Hubble and Keck) A major mapping project was carried out not long ago to determine nearly 1% of the total surface area of Mars and establish chemical composition of the planet.
G. Trapped gases in the volcanic shergotti glasses of Martian meteorites, matches the Martian atmosphere measured by the Viking Landers.
H. SNC’s are slightly magnetized showing a magnetic field from a larger parent body.
I. SNC’s show a weathering process in the form of clay carbonites, salts from liquid water.
J. The fall of Zagami was a witnessed fall and rough calculations from observers show the orbit this Martian Meteorite triangulating back to the orbit of Mars! (from information I have been told but can't verify)
K. Mars samples show a more dynamic change from heating and reheating than other achondrites. (except the Moon)
L. SNC’s are more sodium rich than the HED’s (asteroid Vesta) achondrites and crystallized under more oxidating conditions than the HED’s.
M. Based on 15 volatile trace elements, which are last to condense on a planet, 6 source regions on Mars have been established, showing the areas from which the different Mars Meteorites are from. (Not only are they from Mars but we think we know where on Mars they are from!!)
N. Possible source craters also have been identified for some of the Martian Meteorites source region. This shows impacts that could have liberated material from Mars that later can fall on the Earth. These source regions from above (M.) are where these impact craters have been found.
O. Oxygen isotopes are similar in the Martian Meteorites and are different from the Earth/Moon system isotopes, as well as other meteorite types that have been found. This shows a relationship to Mars and not the Earth/Moon system or any other meteorite types.
P. Cosmic exposure age does not favor the Martian Meteorites coming from outside our solar system. The exposure age is relatively short in terms of solar system age and universe age. Material coming from other parts of the galaxy (let along other parts of the universe) would be much older maybe even older than our solar system itself.
--AL Mitterling ______________________________________________ Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
