Including Original "Paul H. Letters" Copyright © 1996-2014 Paul V. Heinrich - All rights reserved.



Tuesday, 29 July 2014

Online Guidebooks About Florida Geology and Fossils

Online Guidebooks About Florida Geology and Fossils

Online PDF versions of guidebooks about Florida geology
and fossils can be found at http://segs.org/publications/ .

They include;

Hurst, M. V., ed., 2012, Central Florida Phosphate District
Southeastern Geological Society Field Trip Guidebook No. 57
http://segs.org/publications/
http://segs.org/wp/wp-content/uploads/2010/01/SEGS_Guidebook_57.pdf

Portell, R.W., G. H. Means, and R. C. Hulbert, 2012,
SMR Aggregates, Inc., Sarasota, Florida. Southeastern
Geological Society Field Trip Guidebook No. 53
http://segs.org/publications/
http://segs.org/wp/wp-content/uploads/2012/04/SEGS-Guidebook-53.pdf

Yours,

Paul H.

Saturday, 26 July 2014

Pseudocoprolites, Miocene, Washington State

Pseudocoprolites, Miocene, Washington State

Pseudo-poo! All that glitters isn’t fecal gold
by Andrew Farke, PLOS Blogs, July 23, 2014
http://blogs.plos.org/paleo/2014/07/23/pseudo-poo-glitters-isnt-fecal-gold/

The papers that this article cites are:

Mustoe, G. E., 2001, Enigmatic origin of ferruginous “coprolites”:
Evidence from the Miocene Wilkes Formation, southwestern
Washington. Geological Society of America Bulletin vol. 113
no. 6, pp. 673–681.
http://bulletin.geoscienceworld.org/content/113/6/673

Seilacher, A., C. Marshall, H. C. W. Skinner, and T. Tsuihiji,
2001, A fresh look at sideritic “coprolites.” Paleobiology.
vol. 27, no. 1, pp. 7–13.
http://paleobiol.geoscienceworld.org/content/27/1/7.abstract

Spencer, P. K., 1993, The “coprolites” that aren’t: The
straight poop on specimens from the Miocene of
southwestern Washington State. Ichnos. vol. 2, no. 2,
pp. 231–236.
http://www.tandfonline.com/doi/abs/10.1080/10420949309380097

Yancey, T. E., G. E. Mustoe, E. B. Leopold, and M. T.
Heizler, 2013, Mudflow disturbance in latest Miocene
forests in Lewis County, Washington. PALAIOS.
vol. 28, no. 6, pp. 343–358.
http://palaios.sepmonline.org/content/28/6/343.short

A wikipedi image is "File:Pseudocoprolite.jpg" at
http://commons.wikimedia.org/wiki/File:Pseudocoprolite.jpg
Yours,

Paul H.

Sunday, 20 July 2014

Scientists Get First Look Inside Siberian Crater

Scientists Get First Look Inside Siberian Crater

First pictures from inside the 'crater at the end of the
world' by Anna Liesowska Siberian Times, July 17, 2014
http://siberiantimes.com/science/casestudy/news/first-pictures-from-inside-the-crater-at-the-end-of-the-world/

Scientists Get First Look Inside Mysterious Siberian
Crater, by Lisa Winter, IFL Science, July 18, 2014
http://www.iflscience.com/environment/scientists-get-first-look-inside-mysterious-siberian-crater

Team reaches the giant Siberian hole at 'the end of the
world' (The depth of the pit is still unconfirmed by
Christopher Hooton The Independent, July 17, 2014
http://www.independent.co.uk/news/world/a-team-has-reached-the-giant-siberian-hole-at-the-end-of-the-world-9612727.html

Yours,

Paul H.

Martian Paleosols?

Martian Paleosols?

Earth-like soils on Mars? Ancient fossilized soils potentially
found deep inside impact crater suggest microbial life,
University of Oregon, ScienceDaily, July 17, 2014
http://www.sciencedaily.com/releases/2014/07/140717125043.htm

Oregon geologist says Curiosity's images show Earth-like
soils on Mars. University of Oregon, News Release, July 17, 2014
http://uonews.uoregon.edu/archive/news-release/2014/7/oregon-geologist-says-curiositys-images-show-earth-soils-mars

Gregory Retallack
http://blogs.uoregon.edu/gregr/
http://blogs.uoregon.edu/gregr/detailed-webpage/
http://blogs.uoregon.edu/gregr/detailed-webpage/publications/

The paper is:

Retallack, G. J., 2014, Paleosols and paleoenvironments
of early Mars. Geology, 2014; DOI: 10.1130/G35912.1
http://geology.gsapubs.org/content/early/2014/07/14/G35912.1

Yours,

Paul H.

Friday, 18 July 2014

Update On Mysterious Siberian Crater

Update On Mysterious Siberian Crater

An update on the mysterious Siberian Crater.

Video: Team reaches the giant Siberian hole
at 'the end of the world' (The depth of the
pit is still unconfirmed by Christopher Hooton
The Independent, July 17, 2014
http://www.independent.co.uk/news/world/a-team-has-reached-the-giant-siberian-hole-at-the-end-of-the-world-9612727.html

Yours,

Paul H.

Thursday, 17 July 2014

Mysterious Crater Forms in Siberia

Mysterious Crater Forms in Siberia

Scientists baffled by appearance of giant crater
in Siberia (Mysterious hole discovered in remote
tundra in Siberia leaves Russian scientists
looking for answers), The Telegraph, JUly 16, 2014
http://www.telegraph.co.uk/news/worldnews/europe/russia/10971128/Scientists-baffled-by-appearance-of-giant-crater-in-Siberia.html

Giant Hole Forms In Siberia, And Nobody Can
Explain Why. Huffington Post, July 16, 2104
http://www.huffingtonpost.com/2014/07/16/giant-hole-siberia-crater-end-of-world_n_5591780.html

Large crater appears at the 'end of the world'
By The Siberian Times, July 15, 2014
http://siberiantimes.com/other/others/features/large-crater-appears-at-the-end-of-the-world/

A Huge New Crater Is Found In Siberia, And
The Theories Fly, NPR, July 16, 20141
http://www.npr.org/blogs/thetwo-way/2014/07/16/331982188/a-huge-new-crater-is-found-in-siberia-and-the-theories-fly

It is stuff like this that make geology fun.

Yours,

Paul H.

Wednesday, 16 July 2014

New Geological Map of MARS

New Geological Map of MARS

A Beautifully Detailed New Geologic Map of Mars
by Betsey Mason, Wired July 14, 2014
http://www.wired.com/2014/07/new-geologic-map-mars-usgs/

ASU, USGS project yields sharpest map of Mars
surface properties, Arizona State University
https://asunews.asu.edu/20140715-thermal-map

ASU, USGS Create Sharpest Map Ever of Mars
Surface Properties, united States Geological Survey
http://www.usgs.gov/newsroom/article.asp?ID=3936

The geological map is at:

Tanaka, K. L. J. A. Skinner, Jr., J. M. Dohm, R. P.
Irwin, III, E. J. Kolb, C. M. Fortezzo, T. Platz,
G. G. Michael, and T. M. Hare, 2014, Geologic
Map of Mars. Scientific Investigations Map no. 3292
United States Geological Survey, Reston, Virginia
http://pubs.usgs.gov/sim/3292/

Supplementary data is at:

Mars Global Data Sets, Mars Space Flight Facility
http://jmars.asu.edu/maps/?layer=thm_ti_100m_8bit&z=6&greenlabels

Mars THEMIS-Derived Global Thermal Inertia Mosaic
http://astrogeology.usgs.gov/maps/mars-themis-derived-global-thermal-inertia-mosaic

Yours,

Paul H.

CT-scans Of Two Siberian Mammoth Calves Yield Scientific Insights

CT-scans Of Two Siberian Mammoth Calves Yield Scientific Insights

Short lives, violent deaths: Two CT-scanned Siberian
mammoth calves yield trove of insights, University of
Michigan, Science Daily, July 13, 2014
http://www.sciencedaily.com/releases/2014/07/140713163326.htm

Short lives, violent deaths: Two CT-scanned Siberian
mammoth calves yield trove of insights by Jim Erickson
Michigan News, Univresity of MIchigan
http://ns.umich.edu/new/multimedia/videos/22280-short-lives-violent-deaths-two-ct-scanned-siberian-mammoth-calves-yield-trove-of-insights

The paper is;

Fisher, D. C., E. A. Shirley, C. D. Whalen, Z. T. Calamari,
A. N. Rountrey, A. N. Tikhonov, B. Buigues, F. Lacombat,
S. Grigoriev, and P. A. Lazarev, 2014, X-ray computed
tomography of two mammoth calf mummies. Journal of
Paleontology. vol. 88, no. 4, pp. 664-675.
http://www.bioone.org/doi/abs/10.1666/13-092

Yours,

Paul H.

Saturday, 12 July 2014

Ammonites Stolen From Portrush National Nature Reserve, Northern Ireland

Ammonites Stolen From Portrush National Nature Reserve, Northern Ireland

Police probe after fossils stolen (from Portrush National
Nature Reserve), Belfast Telegraph, July 12, 2014
http://www.belfasttelegraph.co.uk/news/local-national/northern-ireland/police-probe-after-fossils-stolen-30425158.html

World famous rocks stolen from Portrush, UTV, 11
July 2014 http://www.u.tv/News/World-famous-rocks-stolen-from-Portrush/468d08a8-50ab-41dd-a8e0-4e626af312bd

Information about the Portrush National Nature Reserve is at:

Portrush Nature Reserve, Discover Northern ireland
(has pictures of the hornfelsed ammonite fossils.)
http://www.discovernorthernireland.com/Portrush-Nature-Reserve-Portrush-P27379

Portrush Nature Reserve
http://www.doeni.gov.uk/niea/places_to_visit_home/nature_resintro/nature_reserves_portrush.htm

The historic value of the hornfelsed ammonite fossils
are discussed in:

Portrush, Ireland - The last stand of the Neptunists
by Siim Sepp, the Traveling Geologist (has pictures
of the hornfelsed ammonite fossils.)
http://www.travelinggeologist.com/2012/09/portrush-ireland-siim-sepp.html

Portrush National Nature Reserve - Portrush Sill
(Paleogene) and Waterloo Mudstone Formation
(Jursssic) http://www.habitas.org.uk/escr/list.asp
and http://www.habitas.org.uk/escr/site.asp?item=1205

Geo-temptations on the Emerald Isle by Callan Bentley
Travels in Geology, January 2008 Geotimes
http://www.geotimes.org/jan08/article.html?id=Travels0108.html

Yours,

Paul H.

Monday, 7 July 2014

Online Thesis About The Bloody Creek Crater, southwestern Nova Scotia.

Online Thesis About The Bloody Creek Crater, southwestern Nova Scotia

While searching the Internet, I came across tan accessibel
PDF version of a thesis about the the Bloody Creek structure
Nova Scotia, Canada. It is:

Nalepa, M. E. 2012, Investigation of the form and age of
the Bloody Creek Crater, southwestern Nova Scotia.
unpublished Acadia Honour’s thesis, Vaughan Memorial
Library, Acadia University, Wolfville, Nova Scotia, Canada
http://openarchive.acadiau.ca/cdm/ref/collection/HTheses/id/753

Other online versions of publications about the Bloody
Creek structure are:

Anonymous (1995) Meteor Crater, Nova Scotia. The
Journal of the Royal Astronomical Society of Canada.
vol. 89, pp. 111–113.
http://articles.adsabs.harvard.edu//full/1995JRASC..89..110./0000111.000.html
http://articles.adsabs.harvard.edu//full/1995JRASC..89..110./0000110.000.html

Brisco, T. H. (2009) The North Group – A newly
discovered multiple impact crater site in southwestern
Nova Scotia? Atlantic Geology. vol. 45, p. 146
http://ees.acadiau.ca/tl_files/sites/ees/pdfs/AUGC_Abstract_example.pdf

Brisco, T. H., I. P. Spooner, P. Pufahl, E. King, and
G. Stevens (2010) The North Group; a possible multiple
impact crater site in southwestern Nova Scotia. Atlantic
Geology. vl. 46, pp. 44-45
http://www.cspg.org/documents/Conventions/Archives/Annual/2010/0784_GC2010_The_North_Group_Possible_Multiple_Impact_Crater_Site.pdf

Stevens, G., I. Spooner, J. Morrow, P. Pufah, R. Raeside,
R. A. F. Grieve, C. R. Stanley, S. M. Barr, and D.
McMullin (2008) Physical evidence of a late-glacial
(Younger Dryas?) impact event in southwestern Nova
Scotia. Atlantic Geology. vol. 44, p. 42.
http://www.cspg.org/documents/Conventions/Archives/Annual/2010/0784_GC2010_The_North_Group_Possible_Multiple_Impact_Crater_Site.pdf

Spooner I., G. Stevens, J. Morrow, P. Pufahl, R. A. F.
Grieve, R. Raeside, J. Pilon, C. Stanley, S. Barr, and D.
McMullin (2009) Identification of the Bloody Creek
structure, a possible impact crater in southwestern
Nova Scotia, Canada. Meteoritics and Planetary Science.
vol. 44, pp. 1193–1202.
https://journals.uair.arizona.edu/index.php/maps/article/viewFile/15765/15753

Spooner, I., P. Pufahl, T. Brisco, J. Morrow, M. Nalepa,
J. Spray, P. Williams, and G. Stevens (2013). Creek:
A low-angled multiple impact crater site in southwestern
Nova Scotia, Canada. Geological Society of America
Abstracts with Programs. vol. 45, no. 1, p. 73.
https://gsa.confex.com/gsa/2013NE/webprogram/Paper215551.html

Yours,

Paul H.

Wednesday, 2 July 2014

Paleodictyon: The Creature That Has Never Been Seen

Paleodictyon: The Creature That Has Never Been Seen

Paleodictyon: The Creature That Has Never
Been Seen by Simon Bishop, RiAus, Australia
http://riaus.org.au/articles/paleodictyon-the-creature-that-has-never-been-seen/

A bizarre living fossil (Paleodictyon nodosum)
http://whyevolutionistrue.wordpress.com/2009/08/25/a-bizarre-living-fossil/

Paleodictyon nodosum
https://en.wikipedia.org/wiki/Paleodictyon_nodosum

Rona, P. A., A. Seilacher and others, 2009, Paleodictyon
nodosum: A living fossil on the deep-sea floor.
DeepSea Research II. vol. 56, pp. 170-1712.
http://www.sciencedirect.com/science/article/pii/S0967064509001799
http://adsabs.harvard.edu/abs/2003AGUFMOS32A0241R

Paleodictyon and Leonardo Da Vinci

The Virgin, the Madonna and Paleodictyon
http://www.decodingtheheavens.com/blog/post/2010/10/14/The-Virgin-the-Madonna-and-Paleodictyon.aspx

Da Vinci and the birth of Ichnology.
http://paleonerdish.wordpress.com/2013/04/15/da-vinci-and-the-birth-of-ichnology/

Baucon, A. (2010). Leonardo da Vinci, The Founding
Fatheer of Ichnology, PALAIOS.vol. 25, no. 6, pp. 361-367
DOI: 10.2110/palo.2009.p09-049r
http://palaios.sepmonline.org/content/25/6/361.abstract

Baucon, A. 2010. Da Vinci’s Paleodictyon: the
fractal beauty of traces. Acta Geologica Polonica, 60 (1), 3–17.
https://geojournals.pgi.gov.pl/agp/article/view/9816/8350
https://geojournals.pgi.gov.pl/agp/article/view/9816

yours,

Paul H.

News About Local Fossil Collectors (Mississippi and Ohio)

News About Local Fossil Collectors (Mississippi and Ohio)

A couple of stories about local fossil collectors.

Local optometrist has an eye for fossils (Hattiesburg, Mississippi)
by Emily Ham Price, SunHerald, Jun 29, 2014
http://www.sunherald.com/2014/06/30/5666819/local-optometrist-has-an-eye-for.html

Ohio man has knack for finding rare fossils (Locust Grove, Ohio)
by Jessica White, The Columbus Dispatch, June 29, 2014
http://www.dispatch.com/content/stories/science/2014/06/22/trilobite-hunter.html
http://www.sfgate.com/news/article/Ohio-man-has-knack-for-finding-rare-fossils-5587883.php

Yours,

Paul H.

Wednesday, 25 June 2014

New PhD. Dissertation About Younger Dryas Impact Hypothesis

New PhD. Dissertation About Younger Dryas Impact Hypothesis

van Hoesel, A., 2014, The Younger Dryas climate change
was it caused by an extraterrestrial impact? Utrecht 
studies in Earth Sciences no. 54. Utrecht University, 
Utrecht, Netherlands. 141 pp. ISBN: 978-90-6266-356-9 
(Open Access Theses and Dissertations)
http://dspace.library.uu.nl:8080/handle/1874/294136
http://dspace.library.uu.nl:8080/bitstream/handle/1874/294136/vanHoesel.pdf?sequence=2

Some other miscellaneous publications:

van Hoesel, A., 2012, The Younger Dryas impact 
hypothesis: a critical review. (poster)
https://www.academia.edu/1232265/The_Younger_Dryas_impact_hypothesis_a_critical_review

van Hoesel, A., 2012, Een meteorietinslag aan hetbegin 
van de Jonge Dryas? Geo.brief June 2012, pp. 10-11.
https://www.academia.edu/4189150/Een_meteorietinslag_aan_het_begin_van_de_Jonge_Dryas
https://leidenuni.academia.edu/AnneliesvanHoesel

Yours,

Paul H.

Charity Shoal Crater, an Exhumed Middle Ordovician Impact Crater

Charity Shoal Crater, an Exhumed Middle Ordovician Impact Crater

Holcombe, T. L., S. Youngblut, and N. Slowey, 2013,
Geological structure of Charity Shoal crater, Lake
Ontario, revealed by multi beam bathymetry. Geo-Marine
Letters. col. 33, no. 4, pp 245-252
http://link.springer.com/article/10.1007%2Fs00367-013-0322-6
http://adsabs.harvard.edu/abs/2013GML....33..245H

They argue that the Charity Shoal Crater in Lake
Ontario formed as the result of an extraterrestrial
impact event in a shallow marine environment during
the Middle Ordovician. After the impact, it was
eventually buried by post-impact marine
sedimentation, which covered it with fossiliferous
marine carbonate strata. Much later, they argue,
it was exhumed by Pleistocene glacial erosion.

Other publications are:

Holcombe, T. L., J. S. Warren, D. F. Reid, W. T.
Virden, and D. L. Divins, 2001, Small Rimmed Depression
in Lake Ontario: An Impact Crater? Journal of Great
Lakes Research. vol. 27, no. 4, pp. 510-517
PDF file at http://www.glerl.noaa.gov/pubs/fulltext/2001/20010012.pdf
abstract at https://www.sciencedirect.com/science/journal/03801330/27/4

Phillip, S. A., 2013, High-resolution lake-based
magnetic mapping and modelling of basement structures,
with examples from Küçükçekmece Lagoon, Turkey and
Charity Shoal, Lake Ontario. unpublished MS thesis,
School of Geography and Earth Sciences, McMaster
University, Hamilton, Ontario. 113 pp.
https://macsphere.mcmaster.ca/handle/11375/13532

Bathymetric map of Charity Crater area.

Great Lakes Data Rescue Project - Lake Ontario Bathymetry
https://www.ngdc.noaa.gov/mgg/greatlakes/lakeontario_cdrom/html/area12.htm
https://www.ngdc.noaa.gov/mgg/greatlakes/lakeontario_cdrom/images/a12_lg.jpg

Yours,

Paul H.

Monday, 16 June 2014

The Proterozoic Oxygen Rise

The Proterozoic Oxygen Rise

Earth's breathable atmosphere a result of continents
taking control of the carbon cycle, University of
Exeter, Science Daily, June 9, 2014
http://www.sciencedaily.com/releases/2014/06/140609153433.htm
http://www.exeter.ac.uk/news/featurednews/title_385882_en.html

Mills, B., T. M. Lenton, and A. J. Watson, 2014,
Proterozoic oxygen rise linked to shifting balance
between seafloor and terrestrial weathering.
Proceedings of the National Academy of Sciences
of the United States of America. Published online
before print June 9, 2014.
http://www.pnas.org/content/early/2014/06/04/1321679111

A related article is:
Geologists confirm oxygen levels of ancient oceans
Syracuse University, Science Daily, June 10, 2014
http://www.sciencedaily.com/releases/2014/06/140610144656.htm
http://www.sciencenewsline.com/summary/2014061016380031.html

Hardisty, D. S. , Z. Lu, N. J. Planavsky, A. Bekker,
P. Philippot, X. Zhou, and T. W. Lyons, 2014, An
iodine record of Paleoproterozoic surface ocean
oxygenation. Geology. First published online May 22, 2014,
http://geology.gsapubs.org/content/early/2014/05/21/G35439.1

A related paper is:
Lyons, T. W., C. T. Reinhard, and N. J. Planavsky, 2014,
The rise of oxygen in Earth’s early ocean and atmosphere.
Nature. vol. 506, no. 7488, pp. 307-315.
http://www.nature.com/nature/journal/v506/n7488/full/nature13068.html

PDF file at: http://media.egu.eu/media/documents/2014/22/oxygenreviewnature.pdf

Yours,

Paul H.

Sunday, 15 June 2014

Where have all the craters gone?

Where have all the craters gone?

Where have all the craters gone? Geological Society
of America, ScienceDaily, May 27, 2014
http://www.sciencedaily.com/releases/2014/05/140527154715.htm

The paper is:
Johnson, B. C., and T. J. Bowling, 2014, Where have
all the craters gone? Earth's bombardment history and
the expected terrestrial cratering record. Geology.
First published online May 22, 2014, doi: 10.1130/G35754.1
http://geology.gsapubs.org/content/early/2014/05/21/G35754.1

An older and related article is:
Tiny 'spherules' reveal details about Earth's asteroid
impacts, Purdue University, April 25, 2012
http://www.purdue.edu/newsroom/research/2012/120425MeloshImpacts.html
http://www.sciencedaily.com/releases/2012/04/120425140316.htm

The paper is:
Johnson, B. C., and H. J. Melosh, 2012, Impact
spherules as a record of an ancient heavy bombardment
of Earth. Nature. vol. 485, no. 7396, pp. 75–77.
http://www.nature.com/nature/journal/v485/n7396/full/nature10982.html

Yours,

Paul H.

-----


MikeG wrote:

>(Keep posting the links though - every
>now and then, one of the papers is free)

The abstract for the PDF of the Lunar and Planetary
Science Conference version of Johnson and Bowling
(2014) is at http://www.hou.usra.edu/meetings/lpsc2014/pdf/2414.pdf

Th PDF file of Johnson and Melosh (2012) is at
http://211.144.68.84:9998/91keshi/Public/File/34/485-7396/pdf/nature10982.pdf

Yours,

Paul H.

Friday, 13 June 2014

Four-billion-year-old rocks yield clues about Earth's earliest crust

Four-billion-year-old rocks yield clues about Earth's earliest crust

Four-billion-year-old rocks yield clues about Earth's
earliest crust. ScienceDaily, University of Alberta
http://www.sciencedaily.com/releases/2014/05/140529112057.htm
News360 at http://news360.com/article/241073278 ; and

Ancient rocks yield clues about Earth's earliest crust
by Bryan Alary, University of Alberta, May 28, 2014
http://news.ualberta.ca/newsarticles/2014/may/ancient-rocks-yield-clues-about-earths-earliest-crust

Reimink, J. R., T. Chacko, R. A. Stern, L. M. Heaman,
2014, Earth’s earliest evolved crust generated in an
Iceland-like setting. Nature Geoscience. Published
online May 25, 2014 10.1038/ngeo2170
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2170.html

A related article is:
Lunar Rocks Are First Direct Evidence of Collision
That Formed Moon, National eographic, June 6, 2014.
http://news.nationalgeographic.com/news/2014/06/140605-earth-moon-theia-evidence-space-science/

Body that formed the Moon came from a different
neighborhood. (The body that smacked into Earth
has a distinctive elemental signature.) Ars Technica
http://arstechnica.com/science/2014/06/body-that-formed-the-moon-came-from-a-different-neighborhood/

Herwartz, D., A. Pack, B. Friedrichs, and A. Bischoff,
2014, Identification of the giant impactor Theia in lunar
rocks. Science. vol. 344, no. 6188, pp. 1146-1150
DOI: 10.1126/science.1251117
http://www.sciencemag.org/content/344/6188/1146

yours,

Paul H.

Thursday, 12 June 2014

A Long-Ago Ancestor: A Little Fish, With Jaws to Come

A Long-Ago Ancestor: A Little Fish, With Jaws to Come

A Long-Ago Ancestor: A Little Fish, With Jaws to Come
by Carl Zimmer, New York Times, June 11, 2014
http://www.nytimes.com/2014/06/12/science/a-long-ago-ancestor-a-little-fish-with-incipient-jaws.html

New fossil find pinpoints the origin of jaws in vertebrates
PhysOrg, June 11, 2014
http://phys.org/news/2014-06-fossil-jaws-vertebrates.html

Chew On This Fantastic New Fossil by Jane Hu, Slate
http://www.slate.com/blogs/wild_things/2014/06/11/new_fossil_shows_evolution_of_jaws_metaspriggina_gill_arches_from_the_burgess.html

The paper is:
Morris, S. M., and J.-B. Caron, 2014, A primitive fish
from the Cambrian of North America. Nature, Published
online 11 June 2014http://www.nature.com/nature/journal/vaop/ncurrent/full/nature13414.html

Additional web pages:
Metaspriggina, Wikipedia,
https://en.wikipedia.org/wiki/Metaspriggina

Metaspriggina walcotti, The Burgess Shale, Royal
Ontario Museum http://burgess-shale.rom.on.ca/en/fossil-gallery/view-species.php?id=81

Yours,

Paul H.

Saturday, 7 June 2014

Lunar Rocks Are First Direct Evidence of Collision That Formed Moon

Lunar Rocks Are First Direct Evidence of Collision That Formed Moon

Lunar Rocks Are First Direct Evidence of Collision
That Formed Moon, National eographic, June 6, 2014.
http://news.nationalgeographic.com/news/2014/06/140605-earth-moon-theia-evidence-space-science/

Body that formed the Moon came from a different
neighborhood. (The body that smacked into Earth
has a distinctive elemental signature.) Ars Technica
http://arstechnica.com/science/2014/06/body-that-formed-the-moon-came-from-a-different-neighborhood/

Herwartz, D., A. Pack, B. Friedrichs, and A. Bischoff,
2014, Identification of the giant impactor Theia in lunar
rocks. Science. vol. 344, no. 6188, pp. 1146-1150
DOI: 10.1126/science.1251117
http://www.sciencemag.org/content/344/6188/1146

Also, there is:
Four-billion-year-old rocks yield clues about Earth's
earliest crust. ScienceDaily, University of Alberta
http://www.sciencedaily.com/releases/2014/05/140529112057.htm
News360 at http://news360.com/article/241073278 ; and

Ancient rocks yield clues about Earth's earliest crust
by Bryan Alary, University of Alberta, May 28, 2014
http://news.ualberta.ca/newsarticles/2014/may/ancient-rocks-yield-clues-about-earths-earliest-crust

Reimink, J. R., T. Chacko, R. A. Stern, L. M. Heaman,
2014, Earth’s earliest evolved crust generated in an
Iceland-like setting. Nature Geoscience. Published
online May 25, 2014 10.1038/ngeo2170
http://www.nature.com/ngeo/journal/vaop/ncurrent/full/ngeo2170.html

Yours,

Paul H.

Sunday, 1 June 2014

A Habitable Environment on Martian Volcano?

A Habitable Environment on Martian Volcano?

Life on Mars could have flourished on the flanks
of a giant Martian volcano in the relatively recent
past, The Guardian, May 28,2014
http://www.theguardian.com/science/across-the-universe/2014/may/28/mars-volcano-alien-life

Martian Slopes of Arsia Mons May Have Been
Home to a Habitable Environment. SciTech Daily
http://scitechdaily.com/martian-slopes-arsia-mons-may-home-habitable-environment/

A habitable environment on Martian volcano?
Bronw University, Kevin Stacey, May 27, 2014
http://news.brown.edu/pressreleases/2014/05/mars

The paper is:

Scanlon, K. E., J. W. Head, L. Wilson, and D. R.
Marchant, 2014, Volcano–ice interactions in the
Arsia Mons tropical mountain glacier deposits.
Icarus vol. 237, pp. 315-339.
https://www.sciencedirect.com/science/article/pii/S0019103514002164

Yours,

Paul H.