Including Original "Paul H. Letters" Copyright © 1996-2018 Paul V. Heinrich - All rights reserved.



Saturday, 26 May 2018

Martian meteorite clarifies origin of Martian geomorphology

Martian meteorite clarifies origin of Martian geomorphology

Ancient meteorite tells tales of Mars topography
by Anne M Stark, Lawrence Livermore National
Laboratory, May 24, 2018
https://phys.org/news/2018-05-ancient-meteorite-tales-mars-topography.html

'Black Beauty' Meteorite Study Reveals the Secrets
of Mars' Strange Topography by Andrew LaSane,
Outer Places, May 24, 2018
https://www.outerplaces.com/science/item/18499-black-beauty-meteorite-mars


The open access paper is:

William S. Cassata, Benjamin E. Cohen, Darren F. Mark,
Reto Trappitsch, Carolyn A. Crow, and others, 2018,
Science Advances 23 May 2018: Vol. 4, no. 5, eaap8306
DOI: 10.1126/sciadv.aap8306
http://advances.sciencemag.org/content/4/5/eaap8306

Yours,

Paul H.

Friday, 25 May 2018

Ground-Dwelling Birds Survived End-Cretaceous Mass Extinction

Ground-Dwelling Birds Survived End-Cretaceous Mass Extinction

When the dinosaurs died, so did forests -- and tree-dwelling birds
Chicago Field Museum, May 24, 2018
https://www.sciencedaily.com/releases/2018/05/180524141736.htm

http://www.hastingstribune.com/asteroid-that-wiped-out-the-dinosaurs-also-shaped-the-evolution/article_001faecc-7f3f-588c-b23d-535d0d2b057b.html

The abstract of the paper is at:

Daniel J. Field, Antoine Bercovici, Jacob S. Berv, Regan Dunn,
David E. Fastovsky, Tyler R. Lyson, Vivi Vajda, and Jacques A.
Gauthier, 2018, Early Evolution of Modern Birds Structured
by Global Forest Collapse at the End-Cretaceous Mass Extinction.
Current Biology, 2018; DOI: 10.1016/j.cub.2018.04.062
https://www.sciencedirect.com/science/article/pii/S0960982218305347?via%3Dihub


Related articles are:

Asteroid Impact That Wiped Out The Dinosaurs
Also Caused Abrupt Global Warming, All Things Considered
https://www.npr.org/sections/thetwo-way/2018/05/24/614105843/asteroid-impact-that-wipedout-the-dinosaurs-also-caused-abrupt-global-warming

Humanity's greatest challenge to save the world from catastrophic
asteroid impacts, By Megan Palin New Zealand Herald,
https://www.nzherald.co.nz/world/news/article.cfm?c_id=2&objectid=12041405

Yours,

Paul H.

"The past is never dead. It's not even past."
William Faulkner, Act 1, Scene III, Requiem for a Nun (1951)

Wednesday, 23 May 2018

OT - Watch Live as Hawaii’s Kilauea volcano erupts lava

OT - Watch Live as Hawaii’s Kilauea volcano erupts lava

Although this is off-topic, I found it quite fascinating.
CBC - Watch Live as Hawaii’s Kilauea volcano erupts lava
https://www.youtube.com/watch?v=VvS20fqTu34

Live Video: Kilauea Lava Flow Activity In Lower Puna Hawaii
https://www.youtube.com/watch?v=HtihmXFWqGo

https://www.youtube.com/watch?v=rFZ3OPnXm9o

CNN
https://www.cnn.com/specials/live-video-1

Yours,

Paul H.

Friday, 18 May 2018

Online Sudbury Impact Structure Publications

Online Sudbury Impact Structure Publications

A couple of publications about the Sudbury
Impact Structure that I found online are:

Anders, Denise, 2016, "The Sudbury Impact Structure -
New Insights Into the Origin and Emplacement
of the Basal Onaping Intrusion and the Parkin,
Trill and Foy Offset Dykes of the North Range"
Electronic Thesis and Dissertation
Repository. 4223. https://ir.lib.uwo.ca/etd/4223

Davidson, A., 1997. New developments in Grenville
Front Geology, Sudbury area, Ontario. Institute on
Lake Superior Geology, Field Trip Guidebook, 43 (part 3).
Geological Survey of Canada contribution no. 1997031
http://flash.lakeheadu.ca/~pnhollin/ILSGVolumes/ILSG_43_1997_pt3_Sudbury.CV.pdf

Yours,

Paul H.

Sunday, 6 May 2018

Mercury's Crust Argued to be Thin

Mercury's Crust Argued to be Thin

Mercury's thin, dense crust. Mercury's crust is thinner than
anyone thought, new mathematical calculations reveal
University of Arizona, Science Daily, April 27, 2018
https://uanews.arizona.edu/story/new-estimates-mercurys-thin-dense-crust

https://www.sciencedaily.com/releases/2018/04/180427100306.htm

Sori, M.M., 2018. A thin, dense crust for Mercury.
Earth and Planetary Science Letters, 489, pp.92-99.
https://www.sciencedirect.com/science/article/pii/S0012821X18300955

Conclusions:

1. Topography on Mercury is not primarily compensated by Pratt isostasy.

2. Mercury's average crustal thickness is 26 ± 11 km, thinner than all
previous estimates.

Yours,

Paul H.

Tuesday, 1 May 2018

Good News - Just Need To Worry About Asteroid and Comet Impacts

Good News - Just Need To Worry About Asteroid and Comet Impacts

Looks like we need to worry only about comets and asteroids. :-)

Earth's magnetic field is not about to reverse and
trigger global catastrophe. The Independent
https://www.independent.co.uk/news/science/earth-magnetic-field-flip-poles-why-not-facts-weak-a8329921.html

Earth's magnetic field is not about to reverse, study finds
Phys_Org, April 30, 2018
https://phys.org/news/2018-04-earth-magnetic-field-reverse.html

The paper is:

Maxwell Brown, Monika Korte, Richard Holme, Ingo
Wardinski and Sydney Gunnarson, 2018, Earth’s
magnetic field is probably not reversing.
Proceedings of the National Academy of Sciences
April 30, 2018. 201722110; published ahead of print April 30, 2018.
https://doi.org/10.1073/pnas.1722110115

http://www.pnas.org/content/early/2018/04/24/1722110115

Yours,

Paul H.