We all have our "bad rock days" 29MAY2019

 We all have our "bad rock days"

There are some days, which are bad rock days, that person wishes

they could have stayed in bed. In case of the Colorado Department

of Transportation, there is:

Boulder the size of a building blocks Colorado highway

Lauren M. Johnson, CNN, May 25, 2019

https://www.cnn.com/2019/05/25/us/huge-boulder-blocks-co-highway-trnd/index.html

The approximate location of this slide is 37 33'51.3"N 108 22'15.1"W .

A person even see one large rock ready to slide in Google Earth.

Giant Rock 'the Size of a Building' Is Blocking a Highway

in Colorado 'Indefinitely'. The two boulders weigh 2.3

million and 8.5 million pounds, respectively

By Rachel DeSantis, People Magazine, May 26, 2019

https://people.com/human-interest/giant-rock-blocks-colorado-highway/

Massive boulder 'the size of a building' blocks highway

ABC Television Stations. Published on May 25, 2019

https://www.youtube.com/watch?v=7h8VSJcvXbI

Yours,

Paul H.

Reidite implies asteroid impact created Libyan Desert Glass 29MAY2019

 Reidite implies asteroid impact created Libyan Desert Glass

Mystery of Libyan desert glass solved at last. Famous
since the time of King Tut the origin of the scattered
glass fragments has long puzzled researchers. Aaron
Cavosie from Australia's Curtin University explains.
https://cosmosmagazine.com/archaeology/mystery-of-libyan-desert-glass-solved-at-last

Planetary scientists unravel mystery of Egyptian
desert glass by Curtin University, PhysOrg
https://phys.org/news/2019-05-planetary-scientists-unravel-mystery-egyptian.html
https://www.sciencealert.com/exotic-glass-in-egypt-was-created-by-a-meteorite-impact-millions-of-years-ago

100-Year Mystery Solved, Yellow Glass In Egyptian
Desert Caused By Meteorite Strike, Athena Chan, Tech Times
https://www.techtimes.com/articles/243406/20190518/100-year-mystery-solved-yellow-glass-in-egyptian-desert-caused-by-meteorite-strike.htm

The paper is:

Cavosie, A.J. and Koeberl, C., 2019. Overestimation of
threat from 100 Mt class airbursts? High-pressure
evidence from zircon in Libyan Desert Glass. Geology.
DOI: 10.1130/G45974.1
https://pubs.geoscienceworld.org/gsa/geology/article/570318/Overestimation-of-threat-from-100-Mtclass

Another open access paper is:

Koeberl, C. and Ferrire, L., 2019. Libyan Desert Glass area
in western Egypt: Shocked quartz in bedrock points to a
possible deeply eroded impact structure in the region.
Meteoritics & Planetary Science. open access
https://onlinelibrary.wiley.com/doi/abs/10.1111/maps.13250

Yours,

Paul H.

ASU receives the first extraterrestrial mud ball in 50 years 25MAY2019

 ASU receives the first extraterrestrial mud ball in 50 years

ASU receives the first extraterrestrial mud ball in 50 years

Arizona state University.

https://asunow.asu.edu/20190520-discoveries-asu-receives-first-extraterrestrial-mud-ball-50-years

This Super Rare Mud Meteorite Crashed into a Costa Rican House

It could provide huge clues about the origins of our solar system.

image by David Grossman, Popular Mechanics, May 22, 2019

https://www.popularmechanics.com/space/deep-space/a27559816/this-super-rare-mud-meteorite-crashed-into-a-costa-rican-house/

This Weird Meteorite Crashed Through a Doghouse in

Costa Rica. (The Dog's Fine) By Meghan Bartels

Science & Astronomy

https://www.space.com/clay-meteorite-that-fell-through-doghouse-recovered.html

Yours,

Paul H.

Two million-year long meteorite record found in Atacama Desert, Chile 25MAY2019

 Two million-year long meteorite record found in Atacama Desert, Chile

Oldest meteorite collection on Earth found in one

of the driest places, Geological Society of America

Sciencedaily, May 23, 2019

https://www.sciencedaily.com/releases/2019/05/190523130200.htm

Earth's Oldest Meteorite Collection Just Found

in the Driest Place on the Planet

By Brandon Specktor, May 24, 2019

https://www.livescience.com/65558-atacama-desert-has-meteors-for-days.html

The paper is:

A. Drouard, J. Gattacceca, A. Hutzler, P. Rochette, R.

Braucher, D. Bourl??s, ASTER Team, M. Gounelle, A.

Morbidelli, V. Debaille, M. Van Ginneken, M.

Valenzuela, Y. Quesnel, R. Martinez. The meteorite

flux of the past 2 m.y. recorded in the Atacama

Desert. Geology, May 22, 2019. Open Access

https://pubs.geoscienceworld.org/gsa/geology/article/570818/the-meteorite-flux-of-the-past-2-m-y-recorded-in

https://arxiv.org/abs/1904.12644

Yours,

Paul H.

The Mystique of Coastal Chevrons 24MAY2019

 The Mystique of Coastal Chevrons

Coastal chevron landforms have had a mystique in the

among some of the impact cratering community as an

indicator of megatusanmis likely generated by Holocene

oceanic impacts. A recent paper that discusses this

and theories of their origin is:

Vimpere, L., Kindler, P. and Castelltort, S., 2019.

Chevrons: Origin and relevance for the

reconstruction of past wind regimes. Earth-Science

Reviews. 193, pp. 317-332

https://www.sciencedirect.com/science/article/pii/S0012825218307347

Yours,

Paul

Asteroids, Micro Diamonds, and the Younger Dryas 20MAY2019

 Asteroids, Micro Diamonds, and the Younger Dryas

Asteroids, Micro Diamonds, and the Younger Dryas

 with Jens Notroff: Archaeological Fantasies Ep 106

Archaeological Fantasies Podcast

https://player.fm/series/archaeological-fantasies-podcast/asteroids-micro-diamonds-and-the-younger-dryas-with-jens-notroff-archaeological-fantasies-ep-106

https://player.fm/series/archaeological-fantasies-podcast

 

Yours,

 

Paul H.

Micrometeorites in Your Gutter and Plio‐Pleistocene microtektites from Florida 18MAY2019

 Micrometeorites in Your Gutter and Plio‐Pleistocene microtektites from Florida

Can you Really Find Micrometeorites in Your Gutter? Well

Phil Plait, Bad Astronomy. May 16, 2019

https://www.syfy.com/syfywire/can-you-really-find-micrometeorites-in-your-gutter-well

Flecks of Extraterrestrial Dust, All Over the Roof

The New York Times, By By William J. Broad

https://www.nytimes.com/2017/03/10/science/space-dust-on-earth.html

Genge, M.J., Larsen, J., Van Ginneken, M. and Suttle, M.D., 2017.

An urban collection of modern-day large micrometeorites:

Evidence for variations in the extraterrestrial dust flux through

the Quaternary. Geology, 45(2), pp.119-122.

https://pubs.geoscienceworld.org/gsa/geology/article/45/2/119/195213/an-urban-collection-of-modern-day-large

A paper about Plio‐Pleistocene microtektites in Florida shell beds.

Meyer, M., Harries, P.J. and Portell, R.W., 2019. A first report

of microtektites from the shell beds of southwestern Florida.

Meteoritics & Planetary Science.

https://onlinelibrary.wiley.com/doi/abs/10.1111/maps.13299

Yours,

Paul H.

Water Could Have Drowned the Earth If Not for Ancient Supernova 13MAY2019

 Water Could Have Drowned the Earth If Not for Ancient Supernova

Water Could Have Drowned the Earth If Not for Ancient Supernova
By Charles Q. Choi,Sopace_Com, February 12, 2019
https://www.space.com/supernova-explosion-earth-water-world.html

The paper is;

Lichtenberg, T., Golabek, G.J., Burn, R., Meyer, M.R., Alibert, Y., Gerya,
T.V., and Mordasini, C., 2019, A water budget dichotomy of rocky
protoplanets from 26Al-heating. Nature Astronomy. volume 3, pages 307–313.
https://www.researchgate.net/publication/331029418_A_water_budget_dichotomy_of_rocky_protoplanets_from_26Al-heating
https://arxiv.org/pdf/1902.04026
https://www.researchgate.net/profile/Tim_Lichtenberg
https://www.nature.com/articles/s41550-018-0688-5

Yours,
 
Paul H.

Eugene Shoemaker Responsible for TV Coverage of Apollo 11 Moon Walk 13MAY2019

 Eugene Shoemaker Responsible for TV Coverage of Apollo 11 Moon Walk

Mission control might never have witnessed Neil Armstrong take his first

steps on the moon if it weren't for the vision of men like Eugene Shoemaker.

https://www.cbsnews.com/news/nasa-almost-didnt-film-the-first-moon-landing/

 

Geologists Ivo Luccitta and Jerry Schaber say Shoemaker, who was their

boss and a top gun at the U.S. Geological Survey, made a lot of stuff

happen on that historic mission.

 

Yours,

 

Paul H.

Christian Koeberl Lecture on Impact Bombardment 02MAY2019

 Christian Koeberl Lecture on Impact Bombardment

The impact bombardment history of the early earth

by Christian Koeberl, University of Vienna (2017)

http://astrobiovideo.com/en/video/126

Other lectures are:

Impacts and consequences for life

by Philippe Claeys, Vrije Universiteit Brussel (2019)

http://astrobiovideo.com/en/video/228

Impacts and consequences for life

by Kalle Kirsimae, University of Tartu (2017)

http://astrobiovideo.com/en/video/9

More lectures at:

http://astrobiovideo.com/en/search?s=Geology

http://astrobiovideo.com/en/search

Yours,

Paul H.

Lecture on Archean Asteroid Impacts and Paleoenvironments 01MAY2019

 Lecture on Archean Asteroid Impacts and Paleoenvironments

A great lecture and lengthy lecture about

Archean paleoenvironments, tectonics,

asteroid impacts, and some paleontology is:

Archean Surface Conditions

Ideas in Science

By Christoph Heubeck - RED18

Published on Mar 12, 2018

http://astrobiovideo.com/en/video/175

https://www.youtube.com/watch?v=yNEkQ8KV-aQ

It begins:

"Here is the the principal take-home take-home

message. All right. We know very little about the

early Earth and and therefore it's such an

interesting thing to talk about. We do know a bit

right. We know just enough to talk endlessly about

it but we do not know enough to supply you with

firm numbers that would put any issue too

firmly to arrest."

Yours,

Paul H.