Including Original "Paul H. Letters" Copyright © 1996-2017 Paul V. Heinrich - All rights reserved.



Monday, 29 December 2008

Siberian flood basalts and the end-Permian environmental crisis

Siberian flood basalts and the end-Permian environmental crisis

Paul bristolia at yahoo.com
Mon Dec 29 00:58:40 EST 2008

In press in the "Earth and Planetary Science Letters" is:

Svensen, H., S. Planke, A. G. Polozov, N. Schmidbauer, F. Corfu,
Y. Y. Podladchikov, and B. Jamtveit, in press, Siberian gas
venting and the end-Permian environmental crisis. Earth and
Planetary Science Letters.

The PDF file for this paper can be found at:

http://folk.uio.no/yuripo/papers/svensen_epsl_09.pdf

They concluded that that heating of Tunguska Basin sediments by
the ascending magma of the Siberian Traps Large Igneous Province
was capable of playing a key role in end-Permian environmental
crisis. They argue that the cooking of organic-rich shales and
petroleum-bearing evaporites around sill intrusions produced
sufficient volumes of greenhouse gases and halocarbons to cause
warming and atmospheric ozone depletion on a global scale. They
estimated that the metamorphism of organic matter and petroleum
generated over 100,000 Gigatons of CO2 that were released through
enormous pipe structures associated with kilometre-sized craters.
They also argue from laboratory experiments that cooking of
petroleum-bearing rock salt at high temperatures by the magmas
generated huge quantities of methyl chloride and methyl bromide
that have resulted not only in global warming but also global ozone
depletion.

PDF files of ther papers of Dr Henrik Svensen can be found at:

http://folk.uio.no/hensven/publications.htm

The source of PDF file of related papers where noted in
"[meteorite-list] Online PDF files about Permian-Triassic
extinction" at;

http://six.pairlist.net/pipermail/meteorite-list/2008-December/048424.html

Note: I am only summarizing what the above paper states. As
result, this post reflect only the opinions of the authors
of the above paper and **not** my own opinions on this subject.
Thus, any disagreements should directed to the paper and it
authors and **not** me. Furthermore I feel no obligation to
defend their conclusions as I am still in the process of
evaluating the arguments made in this paper.

Yours,

Paul H.

Saturday, 27 December 2008

Meteorite impacts Scotland

Meteorite impacts Scotland

Paul bristolia at yahoo.com
Sat Dec 27 22:47:36 EST 2008

"http://news.bbc.co.uk/1/hi/scotland/highlands_and_islands/7795381.stm
(OK, it was a little while back :) )"

More details can be found at:

Microscopic meteorites show early life on Earth faced
rain of rocks Media Releases, Office of External Affairs,
University of Aberdeen, King's College, Aberdeen.

http://www.abdn.ac.uk/mediareleases/release.php?id=1643

"Microscopic meteorites found in Scotland have unveiled
major clues about a catastrophic event which dramatically
altered the Earth’s surface nearly 500 million years ago."

The paper discussed in the above articles is:

Parnall, J., 2009, Global mass wasting at continental
margins during Ordovician high meteorite influx. Nature
Geoscience. vol. 2, no. 1, pp. 57 - 61, Published
online: 14 December 2008 | doi:10.1038/ngeo386

http://www.nature.com/ngeo/journal/v2/n1/abs/ngeo386.html

http://www.nature.com/ngeo/journal/v2/n1/index.html

Yours,

Paul H.

Thursday, 25 December 2008

Online PDF files about Permian-Triassic extinction

Online PDF files about Permian-Triassic extinction

Paul bristolia at yahoo.com
Thu Dec 25 00:46:13 EST 2008

Dear Friends,

The PDF files for a number of papers about the Permian
- Triassic extinction can be downloaded from:

http://pangea.stanford.edu/research/paleobiology/publications.php

They include:

Payne, J.L. and Kump, L.R. 2007. Evidence for recurrent
Early Triassic massive volcanism from quantitative
interpretation of carbon isotope fluctuations. Earth
and Planetary Science Letters. vol. 256, pp. 264-277.

http://pangea.stanford.edu/~jlpayne/Payne%20and%20Kump%202007%20EPSL.pdf

Payne, J.L., Lehrmann, D.J., Follett, D., Seibel, M.,
Kump, L.R., Riccardi, A., Altiner, D., Sano, H., and
Wei, J. 2007. Erosional truncation of uppermost Permian
shallow-marine carbonates and implications for
Permian-Triassic boundary events. Geological Society
of America Bulletin. vol. 119, pp. 771-784.

http://pangea.stanford.edu/~jlpayne/Payne_et_al_2007_GSABull.pdf

Knoll, A.H., Bambach, R.K., Payne, J.L., Pruss, S.,
and Fischer, W. 2007. Paleophysiology and end-Permian
mass extinction. Earth and Planetary Science Letters.
vol. 256, pp. 295-313.

http://pangea.stanford.edu/~jlpayne/Knoll%20et%20al%202007%20EPSL%20Permian%20Triassic%20paleophysiology.pdf

Lehrmann, D. J., Payne, J. L., Pei, D., Enos, P.,
Ellwood, B., Orchard, M.J., Zhang, J., and Wei, J.
2007. Record of the end-Permian extinction and
Triassic biotic recovery in the Chongzuo-Pingguo
Platform, southern Nanpanjiang Basin, Guangxi,
south China. Palaeogeography, Palaeoclimatology,
Palaeoecology. vol. 252, pp. 200-217.

http://pangea.stanford.edu/~jlpayne/Lehrmann%20et%20al%202006%20Geology.pdf

Yours,

Paul H.

Monday, 8 December 2008

UPHEAVAL DOME: CONFIRMATION OF IMPACT ORIGIN

UPHEAVAL DOME: CONFIRMATION OF IMPACT ORIGIN

Paul bristolia at yahoo.com
Mon Dec 1 09:19:54 EST 2008

Stefan Brandes wrote:

" a newly discovered Crater in Utah:
http://lpod.wikispaces.com/November+29%2C+2008 "

Look at:

http://www.mail-archive.com/meteorite-list@meteoritecentral.com/msg64615.html

The paper discussing the shocked quartz is:

Buchner, E., and T. Kenkmann, 2008, Upheaval Dome, Utah, USA:
Impact origin confirmed. Geology. vol.36, no. 3, pp. 227-230.

In part, this abstract stated:

"In this study, we document, for the first time, shocked
quartz grains from this crater in sandstones of the
Jurassic Kayenta Formation. The investigated grains
contain multiple sets of decorated planar deformation
features. ... The shocked quartz grains were found in
the periphery of the central uplift in the northeastern
sector of the crater, which most likely represents the
cross range crater sector."

http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2FG24287A.1
and http://geology.geoscienceworld.org/cgi/content/full/36/3/227?ck=nck

and there is :

I. Upheaval Dome, Utah - Bibliography By Alpha and By
Reverse Date by K. Fisher, November 25, 2008 at:

http://members.csolutions.net/fisherka/astronote/observed/Upheaval/Bibliography.html

III. Buchner, E., and T. Kenkmann, 2008, Upheaval Dome,
Utah, USA: Impact Origin Confirmed. Large Meteorite
Impacts and Planetary Evolution IV, held August 17-21,
2008 at Vredefort Dome, South Africa. LPI Contribution
No. 1423, paper id. 3005.

http://adsabs.harvard.edu/abs/2008LPICo1423.3005B

Some interesting related papers are:

W. Alvarez, E. Staley, D. O'Connor, and M. A. Chan,
1999, Synsedimentary deformation in the Jurassic of
southeastern Utah; a case of impact shaking? Geology.
v. 26; no. 7, pp. 579-582.

Abstract at:

http://geology.geoscienceworld.org/cgi/content/abstract/26/7/579
http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2F0091-7613(1998)026%3C0579%3ASDITJO%3E2.3.CO%3B2

PDF file at:

http://eps.berkeley.edu/~platetec/125.pdf

Dan Bridges, L. W., W. Alvarez, E. Staley, D. O'Connor,
and M. A. Chan, 1999, Synsedimentary deformation in the
Jurassic of southeastern Utah; a case of impact shaking?;
discussion and reply. Geology. v. 27, no. 7, pp. 661-662

http://www.gsajournals.org/perlserv/?request=get-abstract&doi=10.1130%2F0091-7613(1999)027%3C0661%3ASDITJO%3E2.3.CO%3B2

Yours,

Paul H.

Wednesday, 3 December 2008

IAG Planetary Geomorphology Featured Images

IAG Planetary Geomorphology Featured Images

Paul bristolia at yahoo.com
Wed Dec 3 23:25:39 EST 2008

Past Featured Images, Arranged by Place and by Topic
http://www.psi.edu/pgwg/images/bytopic.html

Past Featured Images, Image index
http://www.psi.edu/pgwg/images/index.html

Some Examples:

Inverted Paleochannels on Earth and Mars
http://www.psi.edu/pgwg/images/may08image.html

Unconsolidated Gravels on Asteroid Itokawa
http://www.psi.edu/pgwg/images/nov07image.html

Deltaic sediments on Mars
http://www.psi.edu/pgwg/images/oct08image.html

High resolution image of Mars delta
ttp://www.psi.edu/pgwg/images/jezerodelta.jpg

Yours,

Paul H.

Location of Australian Opal Miner’s “mega meteorite crater”

Location of Australian Opal Miner’s “mega meteorite crater”

Paul bristolia at yahoo.com
Wed Dec 3 10:26:01 EST 2008

In “Opal miner stumbles on mega meteorite crater -
With Picture”, Jason Utas wrote:

http://www.theage.com.au/news/technology/biztech/opal-miner-stumbles-on-mega-meteorite-crater/2008/11/22/1226770814042.html

Text of article deleted.

For those people interested in Google Earth the location of
this suspected carter is 30 degrees, 47.8 minutes, 8.94
seconds S., 143 degrees, 8 minutes, 43.05 seconds E.

or -30.7858166667, 143.145291159

I have a kmz file that I can email interested parties.

another article about this crater is:

“Opal miner fossicks up a mega meteorite crater” at:

http://www.brisbanetimes.com.au/news/national/opal-miner-fossicks-up-a-mega-meteorite-crater/2008/11/22/1227375050742.html

Some more articles about the Canadian meteorite crater.

Meteorite hits on Earth: There may be a recount:
Meteorite craters might not be as rare as we think. A
University of Alberta researcher has found a tool
that could reveal possibly hundreds of undiscovered
craters across Canada and around the world.

http://www.physorg.com/news146841660.html

Unveiling hidden craters

http://www.sciencenews.org/view/generic/id/39004/title/Unveiling_hidden_craters

How Many Meteorites Have Landed In Western Canada?
Prospects For The Missing Holocene Impact Record
Science Daily, Dec. 1, 2008

http://www.sciencedaily.com/releases/2008/11/081126091541.htm

More Meteorites May Hit Earth Than Supposed: New Tool
Gives A Recount, Nov. 25, 2008

http://www.sciencedaily.com/releases/2008/11/081125141600.htm

Yours,

Paul H.

Monday, 1 December 2008

Free PDF File About Possible Impact Generated Seismites

Free PDF File About Possible Impact Generated Seismites

Paul bristolia at yahoo.com
Mon Dec 1 09:22:55 EST 2008

Dear Friends,

PDF files of a study of possible impact related
seismite can be found online. It is:

Simms, M. J., 2003, Uniquely extensive seismite from
the latest Triassic of the United Kingdom: Evidence
for bolide impact? Geology. v. 31, no. 6, p. 557-560.

http://geology.geoscienceworld.org/cgi/content/abstract/31/6/557

PDF File at:

http://www.habitas.org.uk/staff_pdf_files/Impact.pdf

Yous,

Paul H.