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



Monday, 25 April 2016

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.

Sunday, 24 April 2016

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.

Friday, 22 April 2016

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

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.

Thursday, 21 April 2016

Thursday, 14 April 2016

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.

Friday, 8 April 2016

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.

Friday, 1 April 2016

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.