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



Monday, 27 April 2015

Maps, Other Figures, and Information About Glacial and Non-glacial Periods

Maps, Other Figures, and Information About Glacial and Non-glacial Periods

The below article has some great figures and information in it about glacial and nonglacial periods in Earth history. This is great background information for people interested the interactions, of lack thereof, between extraterrestrial impacts and Earth.

Some Thoughts on Global Climate Change: The  Transition from Icehouse to Hothouse 

Article About Icehouse To Hothouse Transitions

Article About Icehouse To Hothouse Transitions

The below article has some great figures and information in it about the prehistory of global climate change.

Some Thoughts on Global Climate Change: The
Transition from Icehouse to Hothouse by Christopher
R. Scotese, PALEOMAP Project April 26, 2015 v6c
https://www.academia.edu/12082909/Some_thoughts_on_Global_Climate_Change_The_Transition_from_Icehouse_to_Hothouse

More at https://uta.academia.edu/ChristopherScotese .

This includes "Atlas of Earth History" at:
https://www.academia.edu/9730874/Atlas_of_Earth_History .

Yours,

Paul H.

Sunday, 26 April 2015

PDF File of Review Paper Related to Shiva Impact Theory

PDF File of Review Paper Related to Shiva Impact Theory

There is an interesting paper that can accessed
online as a PDF file and reviews the geology of
the Seychelles as it related to the terminal
Cretaceous Shiva Impact Theory, It is:

Plummer, P/, 1998, Seychelles Geology and the
Shiva Impact Theory. Phelsuma. vol. 6, pp. 9-19.
http://islandbiodiversity.com/Phelsuma6.htm
https://web.archive.org/web/20150425215833/http://islandbiodiversity.com/Phelsuma6.htm

Phelsuma - the NPTS scientific journal
http://islandbiodiversity.com/issues.htm
http://islandbiodiversity.com/index.htm

More recent papers that either directly or
indirectly concern geology and origin of the
Seychelles are:

Tucker, R. D., L.D. Ashwal, and T.H. Torsvik,
2001, U-Pb geochronology of Seychelles
granitoids: a Neoproterozoic continental arc
fragment. Earth and Planetary Science Letters.
vol. 187, pp. 27-38
http://www.sciencedirect.com/science/article/pii/S0012821X01002825
http://www.earthdynamics.org/torsvik/torsvik-papers/2001/2001-Tucker-etal-EPSL.pdf

Torsvik, T. H., L. D. Ashwal, R. D. Tucker, and
E. A. Eide, 2001, Neoproterozoic geochronology
and palaeogeography of the Seychelles microcontinent:
the India link. Precambrian Research. vol. 110, pp. 47–59
http://www.sciencedirect.com/science/article/pii/S0301926801001802
http://www.earthdynamics.org/torsvik/torsvik-papers/2001/2001-Torsvik-Ashwall-etal-PrecambRes.pdf

A Precambrian microcontinent in the Indian Ocean
N. Kusznir, C. Gaina, P. V. Doubrovine, B. Steinberger,
L. D. Ashwal, and B. Jamtveit, 2013, A Precambrian
microcontinent in the Indian OceanNature Geoscience.
vol. 6, pp. 223–227. doi:10.1038/ngeo1736
http://www.nature.com/ngeo/journal/v6/n3/full/ngeo1736.html
http://www.readcube.com/articles/10.1038%2Fngeo1736

Yours,

Paul H.

Saturday, 18 April 2015

Dating Moon-Forming Impact With Meteorites

Dating Moon-Forming Impact With Meteorites

Dating the moon-forming impact event with meteorites
University of Arizona, Scinece Daily, April 16, 2015
http://www.sciencedaily.com/releases/2015/04/150416145543.htm

SwRI-led team studies meteorites from asteroids to
date Moon-forming impact. Debris from the Moon-
forming impact blasted main belt asteroids long ago,
but left behind traces of what happened. Southwest
Research Institute, San Antonio, April 16, 2015
http://www.swri.org/9what/releases/2015/moon-forming-impact.htmhttp://www.swri.org/press/2015/moon-forming-impact.htm

The paper is:

Bottke, W. F., D. Vokrouhlicky, S. Marchi, T. Swindle,
E. R. D. Scott, J. R. Weirich, and H. Levison, 2015,
Dating the Moon-forming impact event with asteroidal
meteorites. Science. vol. 348, no. 6232, pp. 321-323
http://www.sciencemag.org/content/348/6232/321

Yours,

Paul H.

Thursday, 16 April 2015

The new science of the origins of life

The new science of the origins of life

Shawn Alan posted to the Meteorite-list on April 9, 2015
http://www.mail-archive.com/meteorite-list@meteoritecentral.com/msg120870.html

"Hello Listers
Enjoy: The new science of the origins of life
http://www.radioaustralia.net.au/international/2015-04-02/the-new-science-of-the-origins-of-life/1434890 "

A recent and quite interesting paper concerning the topic of the origin of life is:

New study hints at spontaneous appearance of primordial DNA, University of Colorado at Boulde
Science Daily, April 7, 2015
http://www.sciencedaily.com/releases/2015/04/150407095635.htm

"The self-organization properties of DNA-like molecular fragments four billion years ago may
have guided their own growth into repeating chemical chains long enough to act as a basis for
primitive life, says a new study."

Fraccia, T. P., G. P. Smith, G. Zanchetta, E. Paraboschi, Y. Yi, D. M. Walba, G. Dieci, N. A.
Clark, and T. Bellini, 2015, Abiotic ligation of  DNA oligomers templated by their liquid crystal
ordering. Nature Communications, 2015; 6: 6424  DOI: 10.1038/ncomms7424
http://www.nature.com/ncomms/2015/150310/ncomms7424/full/ncomms7424.html

Yours,

Paul H.

Sunday, 12 April 2015

Craters in Context: Science And History of Impact.

Craters in Context: Science And History of Impact.

Craters in Context: Science And History of Impact.
Seminar with Dr Meg Rosenburg‬ - lecture about  the science and history of craters
by Dr. Meg Rosenburg, UCA SPS,
February 24, 2015
https://www.youtube.com/watch?v=0li2lU_Nvvw
https://www.youtube.com/user/UCASPS

True Anomalies (Tales from the History of Science)
http://www.trueanomalies.com/sample-page/

Dating Craters by Phil Plait
http://www.slate.com/blogs/bad_astronomy/2014/11/02/craters_and_communication_meg_rosenburg_and_science.html

Yours,

Paul H.

Thursday, 9 April 2015

Puzzle of Moon’s Origin Resolved

Puzzle of Moon’s Origin Resolved

Puzzle of Moon’s origin resolved: Simulations
show that Earth probably collided with an
unnervingly similar sister planet to form our lunar
neighbour. by Adam Levy, Nature, a[ril 8, 2105
http://www.nature.com/news/puzzle-of-moon-s-origin-resolved-1.17279

Mastrobuono-Battisti, A., H. B. Perets and S. N.
Raymond, 2015, A primordial origin for the
compositional similarity between the Earth and
the Moon. Nature. vol. 520, no. 7546, pp. 212-215.
http://www.nature.com/nature/journal/v520/n7546/full/nature14333.html

Yours,

Paul H.

Saturday, 4 April 2015

Hunting Fossil Vertebrates in the Eastern US, Alberta, and the Atlantic Ocean

Hunting Fossil Vertebrates in the Eastern US, Alberta, and the Atlantic Ocean

The Royal Tyrrell Museum has A couple of lectures about fossil hunting available online.

One is about hunting dinosaurs in the "Dinosaur Alley" of the northeastern United States is:

Paleontological Notes from the Urban Jungle: Or... Conducting Field Paleontology in spite of Sprawling
Holocene Overburden that is the Baltimore- Washington-Philidelphia "Megalopolis" by Thomas Lipka, Royal Tyrrell Museum Speaker Series 2013
https://www.youtube.com/watch?v=gg3mIRf-Fqo

Another is about hunting vertebrate fossils in Alberta is:

To Hay River and Back: Fieldwork on a 370-Million- Year-Old Beach in the Northwest Territories by Donald Henderson and Chris Capobianco, Royal Tyrrell Museum Speaker Series 2014
https://www.youtube.com/watch?v=ZvdTLYFGLi4

Finally, a quite well done and very fascinating lecture about looking for Albertan dinosaurs is:

Dinosaurs in the Deep: The Sinking of the SS Mount Temple by Darren Tanke, Dinosaurs in the Deep:
The 1916 Sinking of the SS Mount Temple and her Albertan Dinosaur Cargo. Royal Tyrrell Museum
Speaker Series 2013
https://www.youtube.com/watch?v=8XTFNTDK7W8

Related web pages are:

Dinosaurs in the Deep
http://www.ssmounttemple.com
http://www.ssmounttemple.com/ssmth3.htm

It would be fun if someone could find the money to find the Mount Temple and possibly salvage the
dinosaur fossils that were sunk with her.

Yours,

Paul H.

Wednesday, 1 April 2015

Online Geological Society of London Lectures

Online Geological Society of London Lectures

Life at the Edge: Sinking deltas
Lecture by James Syvitski given at the Geological Society on
28 March 2012 as part of the 2012 Shell London Lecture series.
https://www.youtube.com/watch?v=y7mdPzINvn0

This one is one is for the lay public, but still interesting.

Fracked or Fiction: So What are the Risks associated with
Shale Gas Exploitation? Lecture by Richard Davies of
Durham University at the Geological Society
https://www.youtube.com/watch?v=ZhbNGkiVkYM

Even more interesting Geological Society lectures are at:
http://www.geolsoc.org.uk/Events/Past-Meeting-Resources/The-Thames-Through-Time

Paul H.