Radiation Might Destroy Ancient Martian Organics

Radiation Might Destroy Ancient Martian Organics

Alien Life? Radiation May Erase Mars, Europa Fossils
By Nola Taylor Redd, Space.com, May 24, 2016
http://www.space.com/32962-alien-fossils-mars-europa-radiation.html

A couple of abstracts are:

Pavlov, A. A., J. Eigenbrode, D. Glavin, and M. Floyd, 2014,
Rapid Degradation of the Organic Molecules in Martian
Surface Rocks Due to Exposure to Cosmic Rays. Severe
Implications to the "Extinct" Life on Mars. 45th Lunar
and Planetary Science Conference (2014). abstract #2830
http://www.hou.usra.edu/meetings/lpsc2014/pdf/2830.pdf

Pavlov, A. A., D. Glavin, J. Dworkin, H. McLain, and J.
Eigenbrode, 2016, Rapid Degradation of the Organic
Molecules in Martian Subsurface Rocks Due to Exposure
to Cosmic Rays. 47th Lunar and Planetary Science
Conference (2016) abstract no. 2577
http://www.hou.usra.edu/meetings/lpsc2016/pdf/2577.pdf
http://www.hou.usra.edu/meetings/lpsc2016/authorindex.cfm?r=l-r#P

Yours,

Paul H.

Explanation for Origin of Nature's Heaviest Elements

Explanation for Origin of Nature's Heaviest Elements

Galactic 'Gold Mine' Explains the Origin of Nature's Heaviest Elements:
A unique galaxy loaded with hard-to-produce, heavy elements sheds
light on stellar histories and galactic evolution. MIT Kavli Institute for
Astrophysics and Space Research, May 19, 2016
http://www.kavlifoundation.org/science-spotlights/cosmic-heavy-metals
http://phys.org/news/2016-05-galactic-gold-nature-heaviest-elements.html

3 Questions: The origin of the cosmos’ heaviest elements: Unique galaxy
offers clues to the extreme conditions that yield the heavies of the
periodic table.
MIT Kavli Institute for Astrophysics and Space Research, March 21, 2016
http://news.mit.edu/2016/3-q-galaxy-origin-cosmos-heaviest-elements-0321

The paper is:

Alexander, P. J., A. Frebel, A. Chiti, and J. D. Simon, 2016, R-process
enrichment from a single event in an ancient dwarf galaxy
Nature. vol. 531, pp. 610–613 (31 March 2016) doi:10.1038/nature17425
http://www.ncbi.nlm.nih.gov/pubmed/27001693

Also, there is:

Copious r-process enrichment from a single event in an ancient dwarf
galaxy by Alexander P. Ji, Anna Frebel, Anirudh Chiti, Joshua D. Simon
http://arxiv.org/abs/1512.01558

Yours,

Paul H.

Evidence of Precambrian Asteroid Impacts Found in Australia

Evidence of Precambrian Asteroid Impacts Found in Australia

Clues to ancient giant asteroid found in Australia
Australian National University, May 16, 2016
http://www.anu.edu.au/news/all-news/clues-to-ancient-giant-asteroid-found-in-western-australia

https://www.sciencedaily.com/releases/2016/05/160516095132.htm

http://www.astronomy.com/news/2016/05/clues-to-ancient-giant-asteroid-found-in-western-australia

Earth Hit by 15-Mile-Wide Earth Hit by 15-Mile-Wide
Asteroid 3.5 Billion Years Ago, Evidence Indicates, May 17, 2016
http://www.sci-news.com/geology/earth-hit-asteroid-3-5-billion-years-ago-03871.html

Glikson, A., A. Hickman, N. J. Evans, C. L. Kirkland, J.-W. Park, R. Rapp, and S. Romano., 2016, A new ∼3.46Ga asteroid impact ejecta unit at Marble Bar, Pilbara Craton, Western Australia: A petrological, microprobe and laser ablation ICPMS study. Precambrian Research; 279: 103 DOI: 10.1016/j.precamres.2016.04.003
https://www.researchgate.net/publication/301249834_A_new_346_Ga_asteroid_impact_ejecta_unit_at_Marble_Bar_Pilbara_Craton_Western_Australia_A_petrological_microprobe_and_laser_ablation_ICPMS_study

Yours,

Paul H.

Ancient Tsunami on Mars

Ancient Tsunami on Mars

Ancient tsunami evidence on Mars reveals life potential,
By Blaine Friedlander, Cornell Chronicle, May 19, 2016
http://www.news.cornell.edu/stories/2016/05/ancient-tsunami-evidence-mars-reveals-life-potential
https://www.sciencedaily.com/releases/2016/05/160519101756.htm

There Were Mega-Tsunamis on Mars. Billions of years ago, huge waves devastated the Martian landscape, make Earth's tsunamis look tame by comparison. Popular Mechanics
http://www.popularmechanics.com/space/a20941/there-were-mega-tsunamis-on-mars/

Mars may have been carved up by massive ancient tsunamis
By Rachel Feltman, The Washington Post, May 19, 2016
https://www.washingtonpost.com/news/speaking-of-science/wp/2016/05/19/mars-may-have-been-carved-up-by-ancient-tsunamis/

Rodriguez, J. A. P., A. G. Fairén, K. L. Tanaka, M. Zarroca, R. Linares, T. Platz, G. Komatsu, H. Miyamoto, J. S. Kargel, J. Yan, V. Gulick, K. Higuchi, V. R. Baker and N. Glines, 2016, Tsunami Waves Extensively Resurfaced the Shorelines of an Early Martian Ocean. Scientific Reports, 2016
DOI: 10.1038/srep25106
http://www.nature.com/articles/srep25106

Yours,

Paul H.

Cosmic dust reveals Earth's ancient atmosphere

Cosmic dust reveals Earth's ancient atmosphere

Cosmic dust reveals Earth's ancient atmosphere
Monash University, May 11, 2016
http://www.smh.com.au/technology/sci-tech/cosmic-dust-reveals-earths-ancient-atmosphere-20160510-goryca.html
https://www.sciencedaily.com/releases/2016/05/160511154214.htm
http://www.livescience.com/54716-space-dust-reveals-clues-ancient-earth-atmosphere.html

“Using the oldest fossil micrometeorites -- space dust –
ever found, new research has made a surprising
discovery about the chemistry of Earth's atmosphere
2.7 billion years ago.”

The paper is:

Tomkins, A. G., L. Bowlt, M. Genge, S. A. Wilson, H. E. A.
Brand, and J. L. Wykes, 2016, Ancient micrometeorites
suggestive of an oxygen-rich Archaean upper atmosphere.
Nature, 2016; 533 (7602): 235 DOI: 10.1038/nature17678
http://www.nature.com/nature/journal/v533/n7602/full/nature17678.html

Off-topic, but a break from the daily gloom and doom.

World's Oldest Cat Anointed by Guinness
Discovery News, May 11, 2016
http://news.discovery.com/animals/pets/worlds-oldest-cat-anointed-by-guinness-160511.htm

Cat World Records
https://youtu.be/25oPIJlOliA

Yours,

Paul H.

Permian - Triassic Mayhem: Earth's Largest Mass Extinction

Permian - Triassic Mayhem: Earth's Largest Mass Extinction

Permian - Triassic Mayhem: Earth's Largest Mass Extinction
Beniot Beauchamp, Ph.D. - University of Calgary
Royal Tyrrell Museum Speaker Series 2013
Permian - Triassic Mayhem: Lead-up, Catastrophe and
Aftermath of the Earths Largest Mass Extinction viewed
from Arctic Canada, Febrary 11, 2013
https://www.youtube.com/watch?v=J8rynQqg9x8

Some papers are:

Beauchamp, B., Henderson, C.M., Grasby, S.E., Gates, L.T.,
Beatty, T.W., Utting, J., and James, N.P., 2009, Late Permian
sedimentation in the Sverdrup Basin, Cana- dian Arctic:
The Lindström and Black Stripe Forma- tions: Bulletin of
Canadian Petroleum Geology, v. 57, p. 167–191,
doi:10.2113/gscpgbull.57.2.167.
https://www.researchgate.net/publication/250084443_Late_Permian_Sedimentation_in_the_Sverdrup_Basin_Canadian_Arctic_The_Lindstrom_and_Black_Stripe_Formations
https://www.researchgate.net/profile/Benoit_Beauchamp

Grasby, S.E., Sanei, H., and Beauchamp, B., 2011, Catastrophic
dispersion of coal fly ash into oceans during the latest Permian
extinction: Nature Geoscience, v. 4, p. 104–107, doi:10.1038/ngeo1069.
Volume 153 / Special Issue 02 / March 2016, pp 285-297
https://www.researchgate.net/publication/49120396_Catastrophic_dispersion_of_coal_fly_ash_into_oceans_during_the_latest_Permian_extinction

Grasby, S. E., B. Beauchamp, D. P. G. Bond, P. B. Wignall, and
H. Sanei, 2016, Mercury anomalies associated with three
extinction events (Capitanian Crisis, Latest Permian Extinction
and the Smithian/Spathian Extinction) in NW Pangea.
Geological Magazine. vol. 153, no. 2, pp. 285-297.
https://www.researchgate.net/publication/282628853_Mercury_anomalies_associated_with_three_extinction_events_Capitanian_Crisis_Latest_Permian_Extinction_and_the_SmithianSpathian_Extinction_in_NW_Pangea
https://www.researchgate.net/profile/Benoit_Beauchamp

Beauchamp, B., and Baud, A., 2002, Growth and demise of
Permian biogenic chert along northwest Pangea: Evidence for
end-Permian collapse of thermohaline circulation: Palaeogeography, Palaeoclimatology, Palaeoecology, v. 184, p. 37–63, doi:10.1016/S0031-0182
(02)00245-6.
https://www.researchgate.net/publication/223364925_Growth_and_demise_of_Permian_biogenic_chert_along_northwest_Pangaea_evidence_for_end-Permian_collapse_of_thermohaline_circulation

https://www.researchgate.net/profile/Benoit_Beauchamp

Yours,
Paul H.

Ames Impact Structure, Oklahoma, Symposium Online As PDF File

Ames Impact Structure, Oklahoma, Symposium Online As PDF File

The symposium is:

Johnson, K. S., and J. A. Campbell, 1997, Ames Structure in Northwest Oklahoma and Similar Features: Origin and Petroleum Production (1995 Symposium). Proceedings of a symposium held March 28-29, 1995, in Norman, Oklahoma. Circular no. 100. Oklahoma Geological Survey,
The University of Oklahoma, Norman. ISSN 0078-4397

It is at:

http://www.ogs.ou.edu/pubsscanned/Circulars/Circular100.pdf
http://digitalprairie.ok.gov/cdm/ref/collection/stgovpub/id/104579

A paper about similar oil and gas reservoirs created
by extraterrestrial impacts is "High-Impact Reservoirs"
at https://goo.gl/cDqakL .

Yours,

Paul H.

ECORD Drilling Reaches Chicxulub Crater

ECORD Drilling Reaches Chicxulub Crater

Scientists hit pay dirt in drilling of dinosaur-killing
impact crater by Eric Hand, Science, May. 3, 2016
http://www.sciencemag.org/news/2016/05/scientists-hit-pay-dirt-drilling-dinosaur-killing-impact-crater

Geologists Find Clues In Crater Left By Dinosaur-Killing Asteroid
All Things Considered, NPR, May 6, 2016
http://www.npr.org/sections/thetwo-way/2016/05/06/476871766/geologists-find-clues-in-crater-left-by-dinosaur-killing-asteroid

What Happened To The Dinosaurs? Here and Now, April 7, 2016
http://hereandnow.wbur.org/2016/04/07/mexico-crater-dinosaur-research

Yours,

Paul H

Hadean Detrital Zircons – Impacts Not Plate Tectonics ?

Hadean Detrital Zircons – Impacts Not Plate Tectonics ?

Origin of Earth's oldest crystals
Trinity College Dublin, April 28, 2016
http://www.sciencealert.com/there-s-a-new-theory-about-how-the-earth-s-oldest-crystals-were-formed
http://www.livescience.com/54648-oldest-crystals-formed-in-asteroid-craters.html
http://phys.org/news/2016-05-oldest-crystals-world.html

Kenny, G. G., M. J. Whitehouse, and B. S. Kamber, 2016,
Differentiated impact melt sheets may be a potential
source of Hadean detrital zircon. Geology. First published
online April 28, 2016, doi: 10.1130/G37898.1
http://geology.gsapubs.org/content/early/2016/04/27/G37898.1

Kenny, G. G., M. J. Whitehouse, and B. S. Kamber, 2016,
Differentiated impact melt sheets may be a potential
Source of Hadean detrital zircon population. 47th
Lunar and Planetary Science Conference (2016).
http://www.hou.usra.edu/meetings/lpsc2016/pdf/2473.pdf

Yours,

Paul H.

Weaubleau-Osceola Impact Structure Guidebook PDF File

Weaubleau-Osceola Impact Structure Guidebook PDF File

Evans, K. R., K. L. Mickus, C. W. Rovey II, and G. H. Davis
2003, Field Trip I: The Weaubleau-Osceola Structure:
Evidence of a Mississippian Meteorite Impact in
Southwestern Missouri, pp. 1-30, Association of Missouri
Geologists Field Trip Guidebook 50th Annual Meeting
Springfield, Missouri September 26-27, 2003. Report of
Investigation No. 75 and Guidebook No. 26
Missouri Department of Natural Resources,Rollo, Missouri
http://www.missourigeologists.org/Meeting2003/RI-75(2003AMGguidebook).pdf

Other guidebooks about Missouri geology can be found at:
Association of Missouri Geologists Field Trips and Guidebooks
http://www.missourigeologists.org/FieldtripsandGuidebooks.htm

Yours,

Paul H.

PDF File of Crooked Creek Impact Structure, Missouri, Guidebook

PDF File of Crooked Creek Impact Structure, Missouri, Guidebook

Mulvany, 2004 (Gillman, J., editor), Association of Missouri Geologists Field Trip Guidebook, 51st Annual Meeting, Rolla, Missouri, October 1-2, 2004, 2004, Missouri Department of Natural Resources, Geological Survey and Resource Assessment Division. PDF file at:
http://www.missourigeologists.org/Meeting2004/AMGguidebook2004.pdf

Also, there is:

Kiilsgaard, T. H., Heyl, A. V. and Brock, M. R., 1962, The Crooked Creek disturbance, southeast Missouri. U.S. Geological Survey Professional Paper 450-E, p. E14-E19.
http://pubs.usgs.gov/pp/0450e/report.pdf

An informative web page is at:

Crooked Creek Impact Crater, Missouri
http://impactcraters.us/crooked_creek_missouri
http://impactcraters.us/home

Yours,

Paul H.

Dental Disparity Saved Birds From K-Pg Extinction Event

Dental Disparity Saved Birds From K-Pg Extinction Event

Press Releases
New Royal Tyrrell Museum research investigates the pace of the dinosaur extinction, and why birds may have survived
https://royaltyrrellmuseum.wordpress.com/2016/04/21/new-royal-tyrrell-museum-research-investigates-the-pace-of-the-dinosaur-extinction-and-why-birds-may-have-survived/


Bird-like Dinosaurs with Teeth Died Off Abruptly, Beaked Birds Survived. Philip J. Currie Dinosaur Museum
https://dinomuseum.ca/wp-content/uploads/2016/04/Larson-2016-Bird-Dinosaur-Press-Release-PJCDM.pdf


Journal Reference:

Larson, D.W., Brown, C.M., and Evans, D.C. 2016. Dental disparity and ecological stability in bird-like dinosaurs prior to the end- Cretaceous mass extinction. Current Biology 26, 1–9.
http://www.cell.com/current-biology/fulltext/S0960-9822(16)30249-4
http://www.birdforum.net/showthread.php?t=323286

Paper:
http://www.cell.com/current-biology/pdfExtended/S0960-9822(16)30249-4
Additional data:
http://www.cell.com/cms/attachment/2054006054/2060445977/mmc1.pdf

Yours,

Paul H.

Fossil Fakes and Their Recognition

Fossil Fakes and Their Recognition

This is for the fossil hunters on this list.

Fake and mislabeled meteorites are not the only frauds to beware of. there are also fake fossils galore.

Corbacho, J., and C. Sendino, 2015, Fossil Fakes and Their Recognition. Deposits Magazine.
https://depositsmag.com/2015/12/19/fossil-fakes-and-their-recognition/
https://www.researchgate.net/publication/265208436_Fossil_fakes_and_their_recognition
http://www.elfosil.com/DICRAN3HT.htm

Related papers:

Corbacho, J., J. A. Vela, and J. A. Cuevas, 2007, Falsificación de trilobites del Norte de África. Batallería. vol. 13, pp. 29-36.
https://www.researchgate.net/publication/265168347_FALSIFICACION_DE_TRILOBITES_DEL_NORTE_DE_AFRICA
https://portal.uah.es/portal/page/portal/universidad_mayores/descarga_material_docente/material_ciencias_naturales/documentos/falsos_fosiles.pdf

Corbacho, J., and J. A. Vela, 2009, Fossils Falsificación of N. of Africa. (non trilobites) Batallería. vol. 14, pp. 53-56.
https://www.researchgate.net/publication/265168516_FALSIFICACION_DE_FOSILES_DEL_N_DE_AFRICA_NO_TRILOBITES

Corbacho, J., C. Sendino, and M.Tahiri, 2011, Palaeontological fakes, Batalleria. vol. 16, pp. 37-45
https://www.researchgate.net/publication/265168169_Palaeontological_fakes_Falsificaciones_paleontologicas
https://www.researchgate.net/profile/Joan_Corbacho/publication/265168169_Palaeontological_fakes_Falsificaciones_paleontologicas/links/54038f9d0cf23d9765a5cf37.pdf

Corbacho, J., I. Corbacho, S, Morrison, and M. Valent, 2015, Latest techniques detected in the falsification of fossils Batallería. vol. 22, pp. 22-27.
https://www.researchgate.net/publication/284737545_Latest_techniques_detected_in_the_falsification_of_fossils

Paper by Mats E. Eriksson and George O. Poinar Eriksson, M. E., and G. O. Poinar, 2015, Fake it till you make it-the uncanny art of forging amber. Geology Today. vol. 31, no. 1, pp. 21-27.
https://www.researchgate.net/publication/273287099_Fake_it_till_you_make_it-the_uncanny_art_of_forging_amber

Figure 11: An exceptionally well-preserved trilobite (measuring 8 cm in length) in Baltic amber. Figure from above article.
https://www.researchgate.net/figure/273287099_fig12_Figure-11-An-exceptionally-well-preserved-trilobite-measuring-8-cm-in-length-in-Baltic

A lecture about paleontological mistakes.

Whoops! Fossil Faux Pas! Royal Tyrrell Museum Speaker Series 2016 Jon Noad, petroleum geologist, Calgary
https://www.youtube.com/watch?v=DXTdQXviUkE

Yours,

Paul H.

Trickle of food’ helped deep sea creatures survive K-Pg impact

Trickle of food’ helped deep sea creatures survive K-Pg impact

Trickle of food’ helped deep sea creatures survive asteroid
strike that wiped out the dinosaurs. Cardiff University, April 14, 2016.
http://www.dailymail.co.uk/sciencetech/article-3542106/Trickle-food-helped-deep-sea-creatures-survive-asteroid-strike-wiped-dinosaurs.html
https://www.sciencedaily.com/releases/2016/04/160414081843.htm

The paper is:

Birch, H. S., H. K. Coxall, P. N. Pearson, D. Kroon, and D. N.
Schmidt, 2016, Partial collapse of the marine carbon pump after
the Cretaceous-Paleogene boundary. Geology. vol. 44, no. 4,
pp. 287-291. DOI: 10.1130/G37581.1
http://geology.gsapubs.org/content/early/2016/03/07/G37581.1.abstract

PDF at
https://www.researchgate.net/publication/297662660_Partial_collapse_of_the_marine_carbon_pump_after_the_Cretaceous-Paleogene_boundary
and http://www.research.ed.ac.uk/portal/files/24467566/24467508._PFV..pdf

Yours,

Paul h.

The Cretaceous-Palaeogene Mass Extinction: What Do We Really Know?

The Cretaceous-Palaeogene Mass Extinction: What Do We Really Know?

The Cretaceous-Palaeogene Mass Extinction: What Do We Really Know?
Dr. François Therrien, Curator of Dinosaur Palaeoecology,
Royal Tyrrell Museum of Palaeontology
Royal Tyrrell Museum Speaker Series 2016 (video)
https: // royaltyrrellmuseum.wordpress.com/2016/04/05/speaker-series-2016-the-cretaceous-palaeogene-mass-extinction-what-do-we-really-know

Yours,
Paul H.

Neogene Supernovae Showered Earth with Radioactive Debris

Neogene Supernovae Showered Earth with Radioactive Debris

Supernovae showered Earth with radioactive
debris. A series of massive supernova explosions near our
solar system showered the Earth with radioactive debris
between 3.2 and 1.7 million years ago, Australian National
University, April 6, 2016
https://www.sciencedaily.com/releases/2016/04/160406133622.htm
http://phys.org/news/2016-04-proof-ancient-supernovae-zapped-earth.html

The papers are:

Wallner, A., J. Feige, N. Kinoshita, M. Paul, L. K. Fifield, R. Golser,
M. Honda, U. Linnemann, H. Matsuzaki, S. Merchel, G. Rugel, S. G.
Tims, P. Steier, T. Yamagata, and S. R. Winkler, 2016, Recent
near-Earth supernovae probed by global deposition of interstellar
radioactive 60Fe. Nature. vol. 532, no. 7597): 69-72. DOI: 10.1038/nature17196
http://www.nature.com/nature/journal/v532/n7597/full/nature17196.html

Breitschwerdt, D., J. Feige, M. M. Schulreich, M. A. de. Avillez,
C. Dettbarn, and B. Fuchs, 2016, The locations of recent
supernovae near the Sun from modelling 60Fe transport
Nature. vol. 532, no. 7597, pp. 73–76 (07 April 2016) doi:10.1038/nature17424
http://www.nature.com/nature/journal/v532/n7597/full/nature17424.html

A related paper is:

Fields, B. D., and J. Ellis, 1999, On deep-ocean 60Fe as a fossil of
a near-earth supernova. New Astronomy. vol. 4, no 6,
September pp., Pages 419–430.
abstract at http://www.sciencedirect.com/science/article/pii/S1384107699000342
PDF file at http://cds.cern.ch/record/372621/files/9811457.pdf

Yours,

Paul H.

Mile-high Mars mounds built by wind and climate change

Mile-high Mars mounds built by wind and climate change

Mile-high Mars mounds built by wind and climate change
University of Texas at Austin, March 31, 2016
http://news.utexas.edu/2016/03/31/mile-high-mars-mounds-built-by-wind-and-climate-change
https://www.sciencedaily.com/releases/2016/03/160331122351.htm

Day, M., W. Anderson, G. Kocurek and D. Mohrig, 2016,
Carving intracrater layered deposits with wind on Mars.
Geophysical Research Letters, 2016 DOI: 10.1002/2016GL068011
http://onlinelibrary.wiley.com/doi/10.1002/2016GL068011/abstract;jsessionid=240046526192E813385D12531F8E8B70.f03t02

A related paper is:

Geissler, P.E., N. W. Stantzos, N. t. Bridges, M. C. Bourke,
S. Silvestro, and Fenton, 2013, Shifting sands on Mars:
insights from tropical intra-crater dunes. Earth Surface
Processes and Landforms, Vol. 38, Issue 4, p. 407-412,
DOI: 10.1002/esp.3331
https://earthandplanetary.wordpress.com/45-2/
https://earthandplanetary.files.wordpress.com/2014/01/geissler3.pdf
https://www.researchgate.net/publication/235128057_Shifting_sands_on_Mars_Insights_from_tropical_intra-crater_dunes

PDFs of more papers about Martian dunes and other
lndforms at https://earthandplanetary.wordpress.com/45-2/

Yours,

Paul H.

Does Antarctica Have A Hidden Layer Of Iron Meteorites Below Its Surface?

Does Antarctica Have A Hidden Layer Of Iron Meteorites Below Its Surface?

Does Antarctica Have A Hidden Layer Of Meteorites Below
Its Surface? Universe Today
http://www.universetoday.com/127492/does-antarctica-have-a-hidden-layer-of-meteorites-below-its-surface/

Iron meteorites 'buried in Antarctica' by the Sun, BBC News
http://www.bbc.com/news/science-environment-35587680

UCC graduate solves meteorite mystery that puzzled
scientists for decades by Olivia Kelleher, March 10, 2016
http://www.irishexaminer.com/ireland/video-ucc-graduate-solves-meteorite-mystery-that-puzzled-scientists-for-decades-386463.html

"A former physics graduate from UCC has solved a mystery
that has puzzled planetary scientists and Antarctic explorers
for decades."

The paper is:

Evatt, G. W., M. J. Coughlan, K. H. Joy, A. R. D. Smedley, P. J.
Connolly, and I. D. Abrahams, 2016 A potential hidden layer
of meteorites below the ice surface of Antarctica. Nature
Communications 7, Article number: 10679 doi:10.1038/ncomms10679
http://www.nature.com/ncomms/2016/160216/ncomms10679/full/ncomms10679.html

Yours,

Paul H.

Forest Circles, Natural Circular Features Resulting From Self-Organizing Processes

Forest Circles, Natural Circular Features Resulting From Self-Organizing Processes

Natural processes, other than impacts, can also cause circular
features seen in aerial photography and other imagery. Forest
circles are an example of a circular feature create by the
interaction of geology with plants. Go read:

Brauneder, K., S. M. Hamilton, and K. Hattori, 2016,
Geochemical processes in the formation of ‘forest rings’:
examples of reduced chimney formation in the absence of
mineral deposits. Geochemistry Exploration Environment.
vol. 16, no. 1, pp. 2015-2360. DOI: 10.1144/geochem2015-360
https://www.researchgate.net/publication/292337890_Geochemical_processes_in_the_formation_of_%27forest_rings%27_Examples_of_reduced_chimney_formation_in_the_absence_of_mineral_deposits
http://geea.geoscienceworld.org/content/early/2016/01/19/geochem2015-360.abstract

More information in:

Hamilton, S.M., Burt, A.K., Hattori, K.H. & Shirota, J. 2004a.
The distribution and source of forest ring-related methane
in northeastern Ontario. In: Summary of Fieldwork and Other
Activities, 2004. Ontario Geological Survey Open File Report
no. 6145, pp. 21-1–21-6.
http://www.geologyontario.mndmf.gov.on.ca/mndmaccess/mndm_dir.asp?type=pub&id=ofr6145
http://www.mndm.gov.on.ca/en/news/mines-and-minerals/summary-field-work-and-other-activities-2004

Hamilton, S.M. & Hattori, K.H. 2008. Spontaneous potential
and redox responses over a forest ring. Geophysics. vol. 37,
pp. B67–B75.
http://mysite.science.uottawa.ca/khattori/Hamilton-SP-Geophysics2008.pdf

Brauneder, K., Keiko H. Hattori, and G. Southam, 2009,
Investigation of physical, chemical and microbiological
processes in the development of forest rings in Ontario.
Abstract, International Applied Geochemistry Symposium, 2009
https://www.academia.edu/16757327/Investigation_of_physical_chemical_and_microbiological_processes_in_the_development_of_forest_rings_in_Ontario

The mysterious forest rings of northern Ontario
by Elle Andra-Warner, May 21, 2008, CBC,
http://www.cbc.ca/news2/background/tech/science/forest-rings.html

More PDF files about Canadian rocks, minerals, and ores at:
http://mysite.science.uottawa.ca/khattori/surfaceDispersion.html
http://mysite.science.uottawa.ca/khattori/chalcophile.html
http://mysite.science.uottawa.ca/khattori/

Yours,

Paul H.

Spherulites From Chicxulub Impact Found in Columbia

Spherulites From Chicxulub Impact Found in Columbia

Remains of Meteorite That Killed Dinosaurs Found in Colombia,
Latin America Times Herald, March 16, 2016
http://www.laht.com/article.asp?ArticleId=2407852&CategoryId=13936

Fragments of Dinosaur-Killer Meteorite Landed in Colombia,
The Costa Rica Star, March 15, 2016
http://news.co.cr/fragments-of-dinosaur-killer-meteorite-landed-in-colombia/45582/

First South American trace of meteorite that killed dinosaurs found in
Colombia, News Latino, March 16, 2016
http://latino.foxnews.com/latino/lifestyle/2016/03/16/first-south-american-vestige-meteorite-that-killed-dinosaurs-found-in-colombia/

Hallan en Colombia restos del meteorito que hizo extinguir a los
dinosaurios . El equipo científico estuvo liderado por el geólogo
Hermann Bermúdez que hizo la investigación en la isla de Gorgonilla,
en el Pacífico, Pulzo, March 15, 2016
http://www.pulzo.com/vivir-bien/10-dilemas-que-tienen-todas-las-mujeres-en-cualquier-momento/PP5556?from=home-nacion

Remains of mystery meteorite found in Colombia by Latin Correspondent
http://latincorrespondent.com/2016/03/remains-of-mystery-meteorite-found-in-colombia/

Yours,
Paul H.