The Origin of Chondrules
Ғылым және технология
UCLA Meteorite Gallery Lecture Series: December 2020
Title: The Origin of Chondrules
Lecturer: Dr. Alan Rubin, University of California, Los Angeles
Chondrules are submillimeter-size igneous spherules that formed after the crystallization of free-floating silicate-rich droplets in the solar nebula. Their immediate precursors were highly porous millimeter-to-centimeter-size dust aggregates that experienced flash melted, possibly by nebular lightning. Many chondrules appear to have been heated and partly melted more than once; this is indicated by the occurrence in many chondrules of relict grains, overgrowths on phenocrysts, secondary spherical shells (in enveloping compound chondrules), igneous rims, and microchondrule-bearing rims. In addition, P x-ray maps of FeO-rich chondrules reveal complicated thermal and mechanical histories that are otherwise hidden.
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Пікірлер: 12
Excellent presentation, Alan! Thanks for the breakdown.
I got Indian axe full grove that made out of a meteor. Do you want to test it?
Excellent video! Thank you for sharing this! I’ve watched it several times, and learn every time I do! I’d like to see a video for each type category! What exactly makes an angrite different from lodranite etc… I’d like to go back to school, but it’s so expensive, and I appreciate the free education! Please keep making these videos!
so cool thank you 🎸🤟
I have a group of chondrite, lunar and Martian meteorites in Algeria
Achei uma Rocha muito pesada tem som de metal e o imã fica sambando em cima da Rocha . Quero mandar uma foto p vcs como faço p vcs ver se é mesmo um meteoro
I'm in your slow learner group. I need to have this replayed in slow motion a couple of times. Nonetheless, the subject matter is fascinating, and I enjoyed the lecture and the way you presented it. Thank you.🤩🌟🌠✴
سلام میشه با واتساپ ارتباط برقرار کنم با شما؟؟
Bom dia
I have a Meteorite minerals a magnetic minerals a Martian Meteorite. Do you want to see my meteorite Video and to test it. Watching from Davao city Philippines.
What is with the atheist comment? Poor form.
@jaimealbertohernandezlezam943
10 ай бұрын
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