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



Sunday, 31 January 2016

Re-homogenizing the Earth-Moon system

Re-homogenizing the Earth-Moon system

Moon was produced by a head-on collision between Earth and a forming planet UCLA-led research reconstructs massive crash, which took place 4.5 billion years ago
by Stuart Wolpert, UCAL Newsroom, January 28, 2016
http://newsroom.ucla.edu/releases/moon-was-produced-by-a-head-on-collision-between-earth-and-a-forming-planet

Are we getting closer to understanding where the Moon actually came from? Los Angeles times
http://www.latimes.com/science/sciencenow/la-sci-sn-moon-formation-20160129-story.html

Young1, E. D., I. E. Kohl, P. H. Warren, D. C. Rubie, S. A. Jacobson, and A. Morbidelli, 2016, Oxygen isotopic evidence for vigorous mixing during the Moon-forming giant impact. Science. vol. 351, no. 6272, pp. 493-496.
http://science.sciencemag.org/content/351/6272/493

It seems like this event would have scattered bits and pieces of Theia and pre-impact Earth into space where
they would drift about in space and eventually come back as meteorites.

Yours,
Paul H.

Wednesday, 27 January 2016

The Aliens are Silent Because They are Dead

The Aliens are Silent Because They are Dead

The aliens are silent because they're dead
Life on other planets would probably go
extinct soon after its origin, due to runaway
heating or cooling on their fledgling planets.
Australian National University, January 21, 2016
http://www.anu.edu.au/news/all-news/the-aliens-are-silent-because-they-are-extinct
http://www.sciencedaily.com/releases/2016/01/160121110932.htm
http://www.eurekalert.org/pub_releases/2016-01/anu-taa012116.php

Aditya, C., and C. H. Lineweaver, 2016, The
Case for a Gaian Bottleneck: The Biology of
Habitability. Astrobiology. 16(1): 7-22.
Abstract at http://online.liebertpub.com/doi/abs/10.1089/ast.2015.1387
PDF file at http://goo.gl/Kj4Itc and https://goo.gl/OBP4Rn
https://web.archive.org/save/http://adi.life/pubs/ChopraLineweaver2016.pdf

Charles H Lineweaver Publications -
http://www.mso.anu.edu.au/~charley/publications.html
or https://goo.gl/W30KtK

Yours,
Paul H.

Sunday, 24 January 2016

Earth’s Oldest Water May Have Come from Ancient H2O-Filled Dust

Earth’s Oldest Water May Have Come from Ancient H2O-Filled Dust

Earth’s Oldest Water May Have Come from Ancient H2O-Filled Dust
by Mindy Weisberger, Live Science, November 12, 2015
http://www.livescience.com/52778-earth-water-origins-ancient-dust.html

Baffin Island provides insights into origin of Earth's water, Space Daily
http://www.spacedaily.com/reports/Baffin_Island_provides_insights_into_origin_of_Earths_water_999.html

Primeval Water in the Earth by G. Jeffrey Taylor< November 30, 2015
Hawai'i Institute of Geophysics and Planetology
http://www.psrd.hawaii.edu/Nov15/PSRD-Earth-primeval-water.pdf

Hallis, L. J., G. R. Huss, K. Nagashima, G. J. Taylor, S. A. Halldórsson,
D. R. Hilton, M. J. Mottl, and K. J. Meech, 2015, Evidence for
primordial water in Earth’s deep mantle. vol. 350, no. 6262, pp. 795-797
Paper at http://science.sciencemag.org/content/350/6262/795
Reprint at
http://www.ifa.hawaii.edu/publications/preprints/15preprints/Hallis_15-188.pdf

Yours,
Paul H.



The Biggest Dinosaur In History? Or Not? Amphicoelias fragillimus Revisited

The Biggest Dinosaur In History? Or Not? Amphicoelias fragillimus Revisited

The Biggest Dinosaur In History May Never Have Existed
By David Goldenberg, ExtremesFiveThirtyEight, January 11, 2016
http://fivethirtyeight.com/features/the-biggest-dinosaur-in-history-may-never-have-existed/

Amphicoelias - https://en.wikipedia.org/wiki/Amphicoelias

Yours,
Paul H.

Saturday, 23 January 2016

Friday, 22 January 2016

New Diamond-bearing Tourmaline Species Uncovered

New Diamond-bearing Tourmaline Species Uncovered

LSU Petrologist Uncovers New Diamond-bearing Tourmaline Species
http://www.lsu.edu/science/news_events/cos-news-events/news-events-2015/DarrellHenry_Maruyamaite.php

Lussier, A., N. A. Ball, F. C. Hawthorne, D. J. Henry, R. Shimizu,
Y. Ogasawara, and T. Ota, ip, Maruyamaite,
K(MgAl2)(Al5Mg)Si6O18(BO3)3(OH)3O, a potassium-dominant
tourmaline from the ultrahigh-pressure Kokchetav massif,
northern Kazakhstan: Description and crystal structure.
American Mineralogist, preprint.
http://www.minsocam.org/msa/ammin/AM_Preprints/5359HawthornePreprintFeb.pdf

Maruyamaite - http://www.mindat.org/min-46075.html

Lussier, A., Ball, N.A., Hawthorne, F.C., Henry, D.J., Shimizu,
R., Ogasawara, Y. and Ota, T. (2014) Maruyamaite, IMA
2013- 123. CNMNC Newsletter No. 20, June 2014, page 550;
Mineralogical Magazine, 78, 549-558.
http://nrmima.nrm.se/CNMNC%20NEWSLETTER%2020.pdf

Yours,
Paul H.

Wednesday, 20 January 2016

Star’s Bizarre Optical Antics at Least a Century Old

Star’s Bizarre Optical Antics at Least a Century Old

Star’s bizarre optical antics go back at least a century.
Alien civilization still on the table as data comes out
of the archives. by John Timmer, Ars Technica, Jan. 19, 2016
http://arstechnica.com/science/2016/01/stars-bizarre-optical-antics-go-back-at-least-a-century/

KIC 8462852 Faded at an Average Rate of 0.165+-0.013
Magnitudes Per Century From 1890 To 1989 by Bradley
E. Schaefer (Submitted on 13 Jan 2016) rXiv:1601.03256v1
[astro-ph.SR] http://arxiv.org/abs/1601.03256

Yours,
Paul H.

Friday, 8 January 2016

Dance of the dinosaurs?

Dance of the dinosaurs?

Dance of the dinosaurs? Strange gouges hint at bird-like
mating rituals by Amina Khan, Los Angeles Times, Jan. 6, 2016
http://www.latimes.com/science/sciencenow/la-sci-sn-dinosaurs-mating-courtship-birds-20160107-story.html

Meat-Eating Dinosaurs Had Dancing Competitions Over Mates
by edd, Fossil forum, January 7, 2016
http://www.thefossilforum.com/index.php?/topic/60412-meat-eating-dinosaurs-had-dancing-competitions-over-mates/

Lockley, M. G., R. T. McCrea, L. G. Buckley, J. D. Lim, N. A. Matthews,
and many others, 2016, Theropod courtship: large scale physical
evidence of display arenas and avian-like scrape ceremony
behaviour by Cretaceous dinosaurs. Scientific Reports. vol. 6,
Article no: 18952 (2016) http://www.nature.com/articles/srep18952

Yours,
Paul H

Thursday, 7 January 2016

K-Pg Boundary Section In New Jersey

K-Pg Boundary Section In New Jersey

Behind a Shopping Center in New Jersey, Signs of a Mass
Extinction by Kenneth Chang, New York Times, Jan. 4, 2016.
http://nyti.ms/1ZKUijp

Paleontologists Dig up Prehistoric Fossils Behind New
Jersey Shopping Center, Yahoo News, Nov. 17, 2014
http://news.yahoo.com/paleontologist-dinosaur-new-jersey-strip-mall-extinction-165632314.html
https://web.archive.org/save/http://news.yahoo.com/paleontologist-dinosaur-new-jersey-strip-mall-extinction-165632314.html

An unrelated article about dinosaur tracks is:

Amateur Sleuths on the Dinosaur Trail
by David Mark Simpson, New York Times, Jan. 4, 2016
http://www.nytimes.com/2016/01/05/science/dinosaurs-amateur-paleontology-picketwire-canyon-colorado.html

Yours,

Paul H.

Sunday, 3 January 2016

Online PDF files Of Monographs About Trilobites and Labrrea Tar Pits

Online PDF files Of Monographs About Trilobites and Labrrea Tar Pits

Happy New Year.

The Natural History Museum of Los Angeles County has
PDF versions of its publications about their research
online. They included a monograph about Cambrian
trilobites and another about fossils from the La Brea
Tar Pits. They are:

Sundberg, Frederick A, 1994, Corynexochida and Ptychopariida
(Trilobita, Arthropoda) of the Ehmaniella Biozone (Middle Cambrian),
Utah and Nevada. Contributions in Science no. 446. Los Angeles :
Natural History Museum of Los Angeles County,
http://www.nhm.org/site/sites/default/files/pdf/contrib_science/CS446.pdf
http://www.nhm.org/site/research-collections/research-tools/publications

Harris, J. M., ed., 2015, La Brea and Beyond: The Paleontology of
Asphalt-Preserved Biotas. Science Series no. 42. Los Angeles :
Natural History Museum of Los Angeles County,
http://www.nhm.org/site/sites/default/files/pdf/contrib_science/lacm-42.pdf
http://www.nhm.org/site/research-collections/research-tools/publications

There are several more monographs about fossils at:
http://www.nhm.org/site/research-collections/research-tools/publications

Yours,

Paul H.