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UCLA Meteorite Speakers for August and September


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I copied and pasted this from an email that I get. Mitchel

August 2015 News from the UCLA Meteorite Gallery

One of a series of monthly letters sent to visitors to the UCLA Meteorite Gallery and to others who requested to be on the mailing list.

The Meteorite Gallery (Geology room 3697) is open with a docent present every Sunday from 1 till 4 with the exception of the last two Sundays in the calendar year. And it is open every work day from 9 till 4 but without a docent. It is not open Saturdays.

We remind you that our website address is: http://meteorites.ucla.edu/ . There you can find a map of our corner of the UCLA campus and instructions for parking in structure 2.

This month the speaker at our Gallery Event is Professor John Wasson. His topic is: “Formation of meteoritic chondrules, millimeter-size grains formed by melting nebular dust. “ John recently retired from UCLA but still continues his research on iron meteorites, stony irons, chondrites and tektites. Much of his recent research is on evidence regarding the cooling rates of chondrules, an important constraint on their origin..

He will speak on Sunday 16 August 2015 at 2:30 pm in Slichter 3853 at UCLA (near the Gallery).

Summary. Chondrules formed by melting nebular grains. They obtained their spheroidal shapes as a result of surface tension, similar to water droplets. The heat source that melted the chondrules is still not known. John will present evidence that nebular lightning seems best able to explain their properties.

Our speaker for September is Dr. Ming-Chang Liu; his topic is: Presolar grains in meteorites. Presolar grains are tiny dust particles (usually micron-sized or less) produced by other stars (real “stardust”) prior to the formation of the Solar System and surviving in tiny amounts in chondrites.

Ming-Chang is the manager of the ion-microprobe at UCLA. An important part of his research consists of the characterization of isotopic anomalies produced by the decay of radioisotopes having short (<100 million year) half lives.

We hope to see you here this Sunday.

JTW

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