[Rockhounds] Scientists Find Fossilised Cosmic Dust in White Cliffs of Dover

[pmodreski at aol.com]

Thanks for sharing this, Paul--interesting story.


Though I have to say, it seems like an awfully tenuous connection that they are trying to make here.  Equating broken olvine crystals to water-bearing material in the asteroid dust--to me, it's too many links in their chain of logic with too much uncertainty.  But the basic observation of cosmic dust remains in the Dover chalk--that's interesting.


Pete



-----Original Message-----
From: Paul <etchplain at att.net>
To: Rockhound List <rockhounds at rockhounds.drizzle.com>
Sent: Sat, Sep 9, 2017 9:30 am
Subject: [Rockhounds] Scientists Find Fossilised Cosmic Dust in White Cliffs of Dover

Scientists Find Fossilised Cosmic Dust in White Cliffs of Dover
by Colin Smith, PhysOrg, September 7, 2017
http://www3.imperial.ac.uk/newsandeventspggrp/imperialcollege/newssummary/news_7-9-2017-10-59-59
https://phys.org/news/2017-09-scientists-fossilised-cosmic-white-cliffs.html

Martin D. Suttle and Matthew J. Genge, 2017, Diagenetically
altered fossil micrometeorites suggest cosmic dust is common
the geological record, Earth and Planetary Science Letters.
Volume 476, Pages 132-142 DOI: 10.1016/j.epsl.2017.07.0
http://www.sciencedirect.com/science/article/pii/S0012821X17304399
http://adsabs.harvard.edu/abs/2017E%26PSL.476..132S

Martin D. Suttle and Matthew J. Genge, 2017, The Diagenesis
and Replacement of Cosmic Dust in the Geological Record [#6010]
80th Annual Meeting of the Meteoritical Society 2017 (LPI
Contrib. No. 1987)
https://www.hou.usra.edu/meetings/metsoc2017/pdf/6010.pdf
https://www.hou.usra.edu/meetings/metsoc2017/pdf/sess104.pdf

Yours,

Paul H.
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