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



Sunday, 22 January 2012

Studying the science of space junk

Studying the science of space junk

Studying the science of space junk by Eryn Brown
Los Angeles Times, January 22, 2012,
http://www.latimes.com/news/local/la-me-space-junk-20120122,0,5399306,full.story
http://www.latimes.com/news/local/la-me-space-junk-20120122,0,819657.story

Space debris cluttering up orbit by Penelope Debelle
Adelaide Now, January 22, 2012
http://www.adelaidenow.com.au/ipad/space-debris-cluttering-up-orbit/story-fn6bqpju-1226249814821

Best wishes,
Paul H.

Sunday, 8 January 2012

"The Wave, " A Sight To see in Arizona

"The Wave, " A Sight To see in Arizona

For rock hounds and meteorite collectors going to Tucson, Arizona, a very
popular and beautiful rock formation to visit in northeast
Arizona is the "The Wave" (rock formation). This rock
formation consists of an outcrop of deeply eroded,
large-scale, eolian cross-beds in the Navajo Sandstone
in the Paria Canyon- Vermillion Cliffs Wilderness, in
Coconino County, Arizona. It is so popular that there is
a daily online and onsite lottery that held to determine,
who can visit it on any specific day. A popular article
about it is:

Arizona's Wave rock formation a stone-cold stunner
by Hugo Martín, Times, November 20, 2007,
http://www.venturacountytrails.org/News/0182-TheWaveVermilionCliffs/NewsPage.htm
1. More Photographs of "The Wave" ... and 3.
http://www.zionnational-park.com/images/album2/index4.htm

2. Seiler, W. M., 2008, Jurassic Navajo sandstone of Coyote
Buttes, Utah/Arizona : coloration and diagenetic history,
preservation of a dinosaur trample surface, and terrestrial
analogs to Mars. Unpublished M.S. thesis, Dept. of
Geology and Geophysics, University of Utah, Salt Lake
City, Utah.

The 11.5 MB PDF file is available from
http://content.lib.utah.edu/cgi-bin/showfile.exe?CISOROOT=/us-etd2&CISOPTR=109657&CISOMODE=print
http://content.lib.utah.edu/cdm4/document.php?CISOROOT=/us-etd2&CISOPTR=109657

and 3. Loope, D. B., W. M. Seiler, J. A. Mason, and M. A.
Chan, 2008, Wind scour of Navajo Sandstone at the Wave
(central Colorado Plateau, U.S.A.) Journal of Geology.
vol. 116, pp. 173-183.

Link to PDF file at;
http://digitalcommons.unl.edu/geosciencefacpub/215/

The 1.4 MB PDF file is available from;
http://digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1216&context=geosciencefacpub

By the way, it's a long hike to this rock formation. In addition
a person should bring a GPS too since the trail is very poorly
marked.

Best wishes,

Paul H.

Tuesday, 3 January 2012

Weathering profiles on Earth and Mars

Weathering profiles on Earth and Mars

The web page below is an interesting site of images
and text explanation.

Weathering profiles on Earth and Mars by Anne Gaudin,
University Nantes, CNRS, Laboratoire LPGN, France
Featured images for January 2012, IAG Planetary
Geomorphology Working Group
http://www.psi.edu/pgwg/images/Jan12Image.html

The paper is:

Gaudin, A., E. Dehouck, N. Mangold, 2011, Evidence for
weathering on early Mars from a comparison with terrestrial
weathering profiles. Icarus. vol. 216, no. 1, pp. 257-268.
http://www.sciencedirect.com/science/article/pii/S0019103511003496

Best wishes,

Paul H.

Sunday, 1 January 2012

A Meteorite Did Not Start Fire in San Francisco

A Meteorite Did Not Start Fire in San Francisco

A Meteorite Didn’t Start Today’s Six Alarm 
Fire in San Francisco by Roberto Baldwin
Gizmodo, Science, December 31, 2011
http://gizmodo.com/5870615/a-meteorite-didnt-start-todays-six-alarm-fire-in-san-francisco
http://www.gizmodo.com.au/2011/12/a-meteorite-didnt-start-todays-six-alarm-fire-in-san-francisco/

Twitter Urban Legend: A Meteorite Didn’t 
Start Today’s Six Alarm Fire in San Francisco
by Sharon Hill, December 25, 2011

Happy New Year Everyone

Paul H.