Recent Discussion of Younger Dryas impact Hypothesis 20NOV2024

 Recent Discussion of Younger Dryas impact Hypothesis

Hi,

Unsurprisingly, Sweatman, Powell, and West have replied to Holliday et

al. (2023)’s refutation of the YDIH with Sweatman et al. (2024). In response,

Holliday and associates replied with Holliday et al. (2024) and an open access

supplementary material, YDIH Skeptics (2024).

The publications are:

Holliday, V.T., Daulton, T.L., Bartlein, P.J., Boslough, M.B., Breslawski, R.P.,

Fisher, A.E., Jorgeson, I.A., Scott, A.C., Koeberl, C., Marlon, J.R. and

Severinghaus, J., 2023. Comprehensive refutation of the Younger Dryas

Impact Hypothesis (YDIH). Earth-Science Reviews, 247, p.104502.

https://www.sciencedirect.com/science/article/pii/S0012825223001915

Sweatman, M.B., Powell, J.L. and West, A., 2024. Rejection of Holliday

et al.'s alleged refutation of the Younger Dryas impact hypothesis.

Earth-Science Reviews, 258, p.104960.

paywalled at https://www.sciencedirect.com/science/article/abs/pii/S0012825224002897

Holliday, V.T., Daulton, T.L., Bartlein, P.J., Boslough, M.B., Breslawski, R.P.,

Fisher, A.E., Jorgeson, I.A., Scott, A.C., Koeberl, C., Marlon, J.R. and

Severinghaus, J., 2024. Rebuttal of Sweatman, Powell, and West's “Rejection

of Holliday et al.'s alleged refutation of the Younger Dryas Impact Hypothesis”.

Earth-Science Reviews, 258, p.104961.

paywalled at https://www.sciencedirect.com/science/article/abs/pii/S0012825224002897

YDIH Skeptics. 2024. Additional material related to our rebuttal of Sweatman,

Powell, and West's comment on Holliday, et al. (2023) Comprehensive refutation

of the Younger Dryas Impact Hypothesis (YDIH), Earth-Science

Reviews vol. 247 https://doi.org/10.1016/j.earscirev.2023.104502. Zenodo.

open access at https://zenodo.org/records/13924289

I wonder how much time and money has been spent researching, debating, writing,

and publishing on this topic.

Yours,

Paul

Gobekli Tepe and the Younger Dryas Impact Hypothesis

Gobekli Tepe and the Younger Dryas Impact Hypothesis

There are an interesting series of blog posts about various ideas about Gobekli Tepe, its archaeology, and an alleged association with the Younger Dryas Impact Hypothesis on the Lateral Truth blog. They include:

Gobekli Tepe, Part 1: The Background
Rebbeca Bradley, Lateral Truth, October 22, 2018.
https://www.skepticink.com/lateraltruth/2018/10/22/gobekli-tepe-pt-1-background/

Gobekli Tepe, Part 2: The Archaeology
Rebbeca Bradley, Lateral Truth, November 5, 2018.
https://www.skepticink.com/lateraltruth/2018/11/05/gobekli-tepe-archaeology/

Gobekli Tepe, Part 3: The Alternative Mainstream
Rebbeca Bradley, Lateral Truth, November 16, 2018.
https://www.skepticink.com/lateraltruth/2018/11/16/gobekli-tepe-part-3-alternative-mainstream/

Gobekli Tepe, Part 4: Animals and Astronomy,
Rebbeca Bradley, Lateral Truth, November 18, 2018.
https://www.skepticink.com/lateraltruth/2018/11/18/gobekli-tepe-part-4-animals-astronomy/

Gobekli Tepe: Response To Martin Sweatman,
Rebbeca Bradley, Lateral Truth, December 6, 2018.
https://www.skepticink.com/lateraltruth/2018/12/06/gobekli-tepe-response-martin-sweatman/

Decoding Looney Tunes with Astronomy: What Does the Bunny Say?
Rebbeca Bradley, Lateral Truth, December 7, 2018
https://www.skepticink.com/lateraltruth/2018/12/07/decoding-looney-tunes-astronomy-bunny-say/

Martin Sweatman’s Decoding of Prehistory: Incoherent Catastrophe
Rebbeca Bradley, Lateral Truth, January 25, 2019
https://www.skepticink.com/lateraltruth/2019/01/25/martin-sweatmans-decoding-of-prehistory-incoherent-catastrophe/

The above blogs are about:
Sweatman, M.B. and Tsikritsis, D., 2017. Decoding Göbekli Tepe with archaeoastronomy: What does the fox say?. Mediterranean Archaeology & Archaeometry, 17(1)., 233-250.
http://omnilogi.com/ancient/deluge/Sweatman-and-Tsikritsis-gobekli-tepe-comet.pdf

In the same journal, Mediterranean Archaeology and Archaeometry, another paper about a fringe version of a Younger Dryas impact senario is published. The paper is:

Jaye, M., 2019. The flooding of the Mediterranean basin at the Younger–Dryas boundary. Mediterranean Archaeology and Archaeometry, 19(1), 71–83.
http://maajournal.com/Issues/2019/Vol19-1/7_Jaye%2019  (1).pdf

http://www.maajournal.com/Issues2019a.php

As previously mentioned, Rebbeca Bradley also commented on Michael Jaye’s unique ideas about an Younger Dryas impact causing a truly global flood in:

Michael Jaye’s Just-So Story by Rebbeca Bradley, June 22, 2019
https://www.skepticink.com/lateraltruth/2019/06/22/michael-jayes-just-so-story/

Carl Feagans also published a post on his blog about Micheal Jaye’s paper on the Global World-wide Flood and the Younger Dryas Impact. It is:

The Pseudoarchaeology of Michael Jaye’s Worldwide Flood 

Carl Feagans , Archaeology Review, November 18, 2019
https://ahotcupofjoe.net/2019/11/the-pseudoarchaeology-of-michael-jayes-worldwide-flood/

Yours,

Paul H.

Debate about the Younger Dryas Impact Hypothesis Continues 02JUL2018

 Debate about the Younger Dryas Impact Hypothesis Continues

The debate continues.

Why won’t this debate about an ancient cold snap die?

Despite mainstream opposition, a controversial comet impact hypothesis persists

BY Caroyln Gramling, Science News, June 26, 2018

https://www.sciencenews.org/article/younger-dryas-comet-impact-cold-snap

Yours,

Paul H.

Younger Dryas Impact Hypothesis and Missoula (Spokane) Megafloods 15OCT2017

 Younger Dryas Impact Hypothesis and Missoula (Spokane) Megafloods

There is a new paper containing research about the

Missoula (Spokane) megafloods that contain bad news

for those few proponents of the Younger Dryas impact

hypothesis, who argue that these megafloods were

a single megaflood and caused by a hypothetical Younger

Dryas Impact.

It is:

Balbas, A.M., Barth, A.M., Clark, P.U., Clark, J., Caffee,

M., O’Connor, J., Baker, V.R., Konrad, K. and Bjornstad,

B., 2017. 10Be dating of late Pleistocene megafloods

and Cordilleran Ice Sheet retreat in the northwestern

United States. Geology, 45(7), pp.583-586

http://iafi.org/wp-content/uploads/Balbas2017-Missoula-Flood-Chronology.pdf

http://iafi.org/iafi/resources/

http://iafi.org/iafi/beryllium-10-dating-of-late-pleistocene-megafloods-and-cordilleran-ice-sheet-retreat/

This paper contains cosmogenic 10Be ages that directly

date flood and glacial features important to understanding

the flood history, the evolution of the Channeled Scabland,

and relationships to the Cordilleran Ice Sheet. Popular

authors of lay books for the general public, lecturers, and

podcasters, e.g. Graham Hancock and Randall Carlson cannot

dismiss these dates as they did any radiocarbon dates that

contradicted their beliefs as being older wood / bone

reworked from older sediments.

The last of the larger megafloods occurred at 18.2 ± 1.5 ka. It

flowed down the northwestern Columbia River valley prior to

blockage of this route by advance of the Okanogan ice lobe

of the Cordilleran Ice Sheet. The largest of multiple megafloods

predates the alleged Younger Dryas impact event by thousands

of years.

These dates show that the last of the megafloods from

glacial Lake Missoula occurred at about 14.7 ± 1.2 ka. The

youngest of the dated megaflood(s) (14.0 ± 1.4 ka to

14.4 ± 1.3 ka) likely came from glacial Lake Columbia,

indicating that the lake persisted for a few centuries after

the last Missoula megaflood. The last of the megafloods

predate the alleged Younger Dryas impact event by

thousands of years and came from two different sources.

The multiple megafloods that all are older than the

start of the Younger Dryas and, as a result, cannot be

associated with a hypothetical Younger Dryas event

as a few self-taught avocational investigators argue.

That there were multiple the Missoula (Spokane) megafloods

that predated a hypothetical Younger Dryas Impact is a

long standing idea based on solid evidence is shown by an

older and related Friends of the Pleistocene field trip

guidebook. It is:

Waitt, R.B., 1983. Tens of successive, colossal Missoula

floods at north and east margins of channeled scablands.

Friends of the Pleistocene, Rocky Mountain Cell, Guidebook

for 1983 Field Conference Day 2: 27 August 1983

U.S. Geological Survey Open-File Report 83-671

https://pubs.usgs.gov/of/1983/0671/report.pdf

More recent research will be presented at the October

22nd Geological Society of America (GSA) Annual Meeting

in Seattle. Go see:

Session No. 22. T174. Cordilleran Ice Sheet Outburst

Floods: From Glacial Lake Missoula to the Hubbard Glacier.

Sunday, 22 October 2017: 8:00 AM-12:00 PM.

GSA Annual Meeting in Seattle, Washington, USA - 2017

https://gsa.confex.com/gsa/2017AM/webprogram/Session43011.html

Yours,

Paul H.

More Comments by Graham Hancock About Younger Dryas Impact Hypothesis

More Comments by Graham Hancock About Younger Dryas Impact Hypothesis


Popular writer and fringe archaeologist Graham Hancock has written a new and extended commentary
about the Younger Dryas Impact Hypothesis. He is quite unhappy about he believes that he and other proponents of this hypothesis have been treated by so-called “gradualists” whoever they are, within the scientific community. The commentary is at:

Why Science Should Cherish Its Rebels by Graham Hancock

https://grahamhancock.com/hancockg17/



Commentary by Jason Calavito on Hancock’s comments can be found at:



In Major New Article, Graham Hancock Repeats Previous Anti-Scientist Claims, Defends the Search for Atlantis
http://www.jasoncolavito.com/blog/in-major-new-article-graham-hancock-repeats-previous-anti-scientist-claims-defends-the-search-for-atlantis

http://www.jasoncolavito.com/blog -- http://www.jasoncolavito.com

Related comments by Jason Calavito can be found in:

Academic Journal Runs Article Claiming Göbekli Tepe Records Comet Strike, Misses Fact That Article Is Based on Speculative Andrew Collins Book 4/22/2017
http://www.jasoncolavito.com/blog/academic-journal-runs-article-claiming-gobekli-tepe-records-comet-strike-misses-fact-that-article-is-based-on-speculative-andrew-collins-book

http://www.jasoncolavito.com/apps/search?q=Dryas

and

Orbiting the Graham Hancock Universe: "Archaeological Fantasies" Explores Gobekli Tepe and Rebecca Bradley Discusses Gunung Padang, 5/16/2017
http://www.jasoncolavito.com/blog/orbiting-the-graham-hancock-universe-archaeological-fantasies-explores-gobekli-tepe-and-rebecca-bradley-discusses-gunung-padang

Göbekli Tepe, Bad Fox, No Comet - Episode 73
https://www.archaeologypodcastnetwork.com/archyfantasies/73


Contrary to what Mr. Hancock seems to believe, neocatastrophism has become popular among
geologists and scientists as discussed in:

Marriner, N., Morhange, C. and Skrimshire, S., 2010. Geoscience meets the four horsemen?: Tracking the rise of neocatastrophism. Global and Planetary Change, 74(1), pp.43-48.
https://www.researchgate.net/publication/222537265_Geoscience_meets_the_four_horsemen_Tracking_the_rise_of_neocatastrophism

One item that Jason Calavito did not mention in his commentaries, is that Mr. Hancock does not appreciate the significance of recent research about the chronology of the Missoula (Spokane) Floods and older “Ancient Cataclysmic Floods.” The identification of numerous Missoula Floods has nothing to do with any imaginary conspiracy by an equally imaginary cabal of nameless “gradualists.” Rather the recognition is based upon multiple, unconformity-bounded sets of flood deposits. These flood deposits are separated subaerial exposure surfaces in which paleosols, including some very well-developed calcretes, and terrestrial animals burrows have developed. There also are separate sets of clastic dikes truncated at different unconformities. Some of different sets of flood deposits have been
dated using, where possible, by radiocarbon dating magnetostratigraphy, optically stimulated luminescence dating, and tephrachronology. The oldest of these deposits predate 1.77 million years ago. There exists an abundance of published evidence that demonstrates the occurrence of innumerable Missoula-like megafloods over a period greater than 1.77 million years.

Also, Mr. Hancock overlooks Antonio Zamora ‘s badly flawed optically stimulated luminescence arguments that ignores the context of these dates and collaborating pollen records from the fills of the Carolina Bays.

Finally, Mr. Hancock is seemingly unaware of the lack of any credible evidence supporting the existence of Michael Davias’ seemingly imaginary Saginaw Bay impact structure that is used to explain the Carolina Bays. The geology that region is well known enough to show that there is a complete lack of the deformation of bedrock and overlying Quaternary deposits that such an impact would have caused. Also, any geophysical signature ot such as impact structure is lacking. Finally, regional
sedimentary and paleoenvironmental archives for that time period lack and are undisturbed by the ejecta deposits that such an impact would have created. The Saginaw Bay impact structure is just one of a few likely imaginary Pleistocene impact craters that have been reported in the Great lakes region.

Yours,

Paul H

Another Younger Dryas Impact Hypothesis Paper

Another Younger Dryas Impact Hypothesis Paper

The discussion continues.

Discovery of widespread platinum may help solve Clovis people mystery, University of South Carolina, March 9, 2017
https://www.sciencedaily.com/releases/2017/03/170309120656.htm
http://www.sc.edu/uofsc/posts/2017/03/uofsc_archaeologists_discover_platinum_at_clovis_sites.php

Moore, C.R., West, A., LeCompte, M.A., Brooks, M.J., Daniel Jr, I.R., Goodyear, A.C., Ferguson, T.A., Ivester, A.H., Feathers, J.K., Kennett, J.P. and Tankersley, K.B., 2017.
Widespread platinum anomaly documented at the Younger Dryas onset in North American sedimentary
sequences. Scientific Reports, 7, p.44031.
http://www.nature.com/articles/srep44031
http://1f9hwg1wionh254zdu2abfkg.wpengine.netdna-cdn.com/wp-content/uploads/srep44031.pdf
https://www.academia.edu/31867816/Widespread_platinum_anomaly_documented_at_the_Younger_Dryas_onset_in_North_American_sedimentary_sequences_OPEN

The number of publications on this topic must be closing in on circa 180 to 200 by now.

Yours,

Paul H.

Review of Recent Younger Dryas Impact Hypothesis Podcast

Review of Recent Younger Dryas Impact Hypothesis Podcast

For a review by Jason Colavito of Graham Hancock's latest comments about the Younger Dryas Impact Hypothesis, look at:

Graham Hancock Appears on Joe Rogan Podcast and Spends Three and Half Hours Bashing Skeptics by Jason Colavito
http://www.jasoncolavito.com/blog/graham-hancock-appears-on-joe-rogan-podcast-and-spends-three-and-half-hours-bashing-skeptics

Yours,

Paul H.

A Blind Test of the Younger Dryas Impact Hypothesis

A Blind Test of the Younger Dryas Impact Hypothesis

Holliday V, Surovell T, Johnson E (2016) A Blind Test of the
Younger Dryas Impact Hypothesis. PLoS ONE 11(7): e0155470.
doi:10.1371/journal.pone.0155470
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0155470
http://www.ncbi.nlm.nih.gov/pubmed/27391147

An earlier paper is;

Holliday, V. T., T. A. Surovell, D. J. Meltzer, D. K. Grayson, and
M. Boslough, 2014, The Younger Dryas impact hypothesis: A
cosmic catastrophe. Journal of Quaternary Science 29:515-530.
http://www.uwyo.edu/surovell/pdfs/jqs%202014.pdf
http://www.uwyo.edu/surovell/

and "A Cosmic Catastrophe: the Great Clovis comet Debate" at
http://www.argonaut.arizona.edu/Clovis_Comet_Debate.html

Yours,

Paul H.

New Younger Dryas Impact Hypothesis Paper

New Younger Dryas Impact Hypothesis Paper

There is a new Younger Dryas Impact hypothesis paper. It is;

Kennett, J. P., D. J. Kennettb, B. J. Culleton, and many others,
2015, Bayesian chronological analyses consistent with
synchronous age of 12,835–12,735 Cal B.P. for Younger
Dryas boundary on four continents. Proceedings of the
National Academy of sciences of the United States.
Early Edition, James P. Kennett, doi: 10.1073/pnas.1507146112
http://www.pnas.org/content/early/2015/07/21/1507146112.abstract

Some comments about it:

From the Journal of Younger Dryas Impact Hypothesis Studies
Musings on Quantitative Palaeoecology, by Richard Telford
https://quantpalaeo.wordpress.com/2015/07/28/from-the-journal-of-younger-dryas-i
mpact-hypothesis-studies/

Another article of his is “Platinum spikes extra-terrestrial
impact as initiator of Younger Dryas Posted on 24/07/2013”
https://quantpalaeo.wordpress.com/2013/07/24/extra-terrestrials-and-the-younger-
dryas/comment-page-1/#comment-2822

There is an another paper, which found that the environmental
changes that mark the beginning of the Younger Dryas are
diachronous in their time of occurrence according to latitude.
Along latitude 56–54°N, they ocurred as early as c. 12,900–13,100 cal. BP,
while further north they ocurred at c. 12,600–12,750 cal. BP.

This paper is:

Muschitiello, F., and B. Wohlfarth, 2015, Time-transgressive
environmental shifts across Northern Europe at the onset of
the Younger Dryas. Quaternary Science Reviews. 109:49–56.
http://www.sciencedirect.com/science/article/pii/S0277379114004727

Yours,

Paul H.

Study Casts Doubt on Younger Dryas Impact Hypothesis

Study Casts Doubt on Younger Dryas Impact Hypothesis

Study casts doubt on mammoth-killing cosmic impact
University of California, Davis, CA, Science Daily
http://www.sciencedaily.com/releases/2015/01/150106130518.htm

Study casts doubt on mammoth-killing cosmic impact
University of California, Davis, CA,
http://news.ucdavis.edu/search/news_detail.lasso?id=11117

Cosmic Impact Hypothesis Hypothesis Probably
Based On Remains Of Ancient House Fires
Science 2.0, January 8, 2015
http://www.science20.com/news_articles/cosmic_impact_hypothesis_hypothesis_probably_based_on_remains_of_ancient_house_fires-152045

The paper is:

Thy, P., G. , G. H. Barfod, and D.Q. Fuller, 2015,
Anthropogenic origin of siliceous scoria droplets
from Pleistocene and Holocene archaeological sites
in northern Syria. Journal of Archaeological Science.
vol. 15, pp. 193-209. DOI: 10.1016/j.jas.2014.11.027
http://www.sciencedirect.com/science/article/pii/S0305440314004403
https://www.academia.edu/9965536/Anthropogenic_origin_of_siliceous_scoria_droplets_from_Pleistocene_and_Holocene_archaeological_sites_in_northern_Syria

Yours,

Paul H

New Paper About Younger Dryas Impact Hypothesis

New Paper About Younger Dryas Impact Hypothesis

Holliday, V. T., T. Surovell, D. J. Meltzer, D. K. Grayson,
and M. Boslough, 2014, The Younger Dryas impact
hypothesis: a cosmic catastrophe. Journal of Quaternary
Science. vol. 29, no. 6, pp. 515–530, August 2014

Abstract at http://onlinelibrary.wiley.com/doi/10.1002/jqs.2724/full

PDF file athttp://www.geo.arizona.edu/sites/www.geo.arizona.edu/files/pictures/JQS2014--Holliday%20et%20al.%20FULL.pdf

A couple of recent abstracts about the Corossol Crater,
which is mentioned in the above paper are:

Higgins, M. D., P. Lajeunesse, G. St-Onge, R. Sanfacon, and
M. Duchesne, 2013, Impact Breccia Clast from the Corossol
Crater, Canada. 76th Annual Meteoritical Society Meeting.
Meteoritics and Planetary Science Supplement, id.5190
http://www.hou.usra.edu/meetings/metsoc2013/pdf/5190.pdf

Higgins, M. D., P. Lajeunesse, G. St-Onge, J. Locat,
R. Sanfacon, and M.J. Duchesne, 2014, The Submarine
4-km diameter Corossol Crater, Eastern Canada: Evidence
for an impact origin.''] Geophysical Research Abstracts.
vol. 16, p. EGU2014-4190.
http://meetingorganizer.copernicus.org/EGU2014/EGU2014-4190.pdf

Yours,

Paul H.

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.

Interesting Paper About Younger Dryas Impact Hypothesis

Interesting Paper About Younger Dryas Impact Hypothesis

There is a new and interesting paper about the Younger
Dryas Impact Hypothesis. It is:

van Hoesel, A., W. Z. Hoek, G. M. Pennock, and M. R. Drury,
2014, The Younger Dryas impact hypothesis: a critical review.
Quaternary Science Reviews. vol. 83, pp. 95–114.
http://www.sciencedirect.com/science/article/pii/S0277379113004332
http://www.sciencedirect.com/science/journal/02773791/83/supp/C

This paperconcludes that convincing evidence for this hypothesis
remains debatable and that some of the evidence used to support
the Younger Dryas impact hypothesis either cannot fully be
explained or is contradictory. This paper also concludes that
there is an apparent age discrepancy of up to two centuries
between different sites associated with the proposed impact
event and offers alternative interpretations of it.

Yours,

Paul H.

Younger Dryas Impact Hypothesis Supported by Graham Hancock

Graham Hancock, a well known alternative "prehistorian" and
best-selling popular book author has apparently Become a supporter
of the Younger Dryas Impact Hypothesis. In his upcoming book, which
is currently described as a revision of his 1995 book, "Fingerprints of
the Gods,” Mr. Hancock will apparently argue for Younger Dryas
Impact having created a "titanic global cataclysm" that destroyed a
lost civilization that he believes existed during the Late Pleistocene.
According to published accounts, he will apparently use Gobekli Tepi
as evidence of the existence of this lost Ice Age civilization.

"Graham Hancock Working on 'Fingerprints of the Gods Part 2'" at
http://dailygrail.com/Hidden-History/2013/2/Graham-Hancock-Working-Fingerprints-the-Gods-Part-2
stated:

".... the first piece of evidence that made me realise there
was a new story to be told was proof that north America
was struck by several pieces of a giant fragmenting comet
12,900 years ago (i.e. 10,900 BC), causing an extinction-level
event all around the planet, radically changing global
climate and initiating the sudden and hitherto unexplained
thousand-year deep-freeze right at the end of the Ice Age
that geologists call the Younger Dryas."

and

"…supports the thesis of a great civilisation, lost to history
between 13,000 and 12,000 years ago, that I controversially
put before the public in 1995 with Fingerprints of the Gods."

His Facebook page about the Younger Dryas impact hypothesis is
https://www.facebook.com/Author.GrahamHancock/posts/10151506710212354

Initially, in Fingerprints of the Gods, Mr. Hancock argued that his lost
Ice Age civilization was destroyed by Earth Crustal Displacement.
In "Underworld: Flooded Kingdoms of the Ice Age", he abandoned Earth
Crustal Displacement and argued that his lost Ice Age civilization was
destroyed by rapid global sea level rise that started at the end of the
last Ice Age and continued into Early Holocene. Now it appears that
his terminal Pleistocene cataclysm has shifted again from terminal
Pleistocene – Early Holocene global sea level rise to the hypothesized
Younger Dryas impact.

Reviews of Fingerprints of the Gods are:

1. Malek, J., 1996, Fingerprints of the Gods: A Review. Discussions in
Egyptology. vol. 24, pp. 135 – 142.
http://www.hallofmaat.com/modules.php?name=Articles&file=article&sid=27

2. The Gentle Art of Myth Management by Duncan Edlin, Papers, Hall of Ma’at,
http://www.hallofmaat.com/modules.php?name=Articles&file=article&sid=28

Additional articles about “Fingerprints of the Gods” and Earth Crustal
Displacement can be found in the “Papers” section of the Hall of Ma’at,
http://www.hallofmaat.com/modules.php?name=Topics

They include:

Brass, M., 2002, Tracing Graham Hancock's Shifting Cataclysm. Skeptical
Inquirer. vol. 26, no. 4, pp. 45-49.
http://www.csicop.org/si/show/tracing_graham_hancockrsquos_shifting_cataclysm/
http://www.hallofmaat.com/modules.php?name=Articles&file=article&sid=48

Reviews of "Underworld: Flooded Kingdoms of the Ice Age" and associated
video are:

1. Book Review of Underworld by Graham Hancock by Duncan Edlin
Papers, Hall of Ma’at,
http://www.hallofmaat.com/modules.php?name=Articles&file=article&sid=47

2. Review of Flooded Kingdoms of the Ice Age by Nic Flemming
Papers, Hall of Ma’at,
http://www.hallofmaat.com/modules.php?name=Articles&file=article&sid=36

Some other books of Graham Hancock’s other books include “Keeper
Of Genesis,” “Talisman: Sacred Cities, Secret Faith,” “The Sign and The
Seal,” “Heaven's Mirror,” and “Supernatural: Meetings with The Ancient
Teachers of Mankind.”

A review of “Supernatural: Meetings with The Ancient Teachers of Mankind”
is: The trance of life by Gary Lachman, The Guardian, December 30, 2005
http://www.guardian.co.uk/books/2005/dec/31/featuresreviews.guardianreview12

A related paper is:

Spencer, W., 2003, The Lost Aisle: Selling Atlantis in the “Spiritual
Supermarket”. Journal of Religion and Popular Culture. vol. 3, no. 1,
article 5-5.
http://utpjournals.metapress.com/content/b416h386r5387473/
http://utpjournals.metapress.com/content/b416h386r5387473/fulltext.pdf

Yours,
Paul H.

Study Rebuts Younger Dryas Impact Hypothesis

Study Rebuts Younger Dryas Impact Hypothesis

Study rebuts hypothesis that comet attacks ended
9,000-year-old Clovis culture, Sandia National
Laboratories, Janury 30, 2013,
https://share.sandia.gov/news/resources/news_releases/clovis_rebuttal/

Clovis Comet Hypothesis Called 'Bogus' By
Credible Scientist, RedOrbit, January 30, 2013‎
http://www.redorbit.com/news/science/1112774312/clovis-comet-theory-bogus-013013/

The paper is:

Boslough, M., K. Nicoll, V. Holliday, T. L. Daulton,
D. Meltzer, N. Pinter, A. C. Scott, T. Surovell, P.
Claeys, J. Gill, F. Paquay, J. Marlon, P. Bartlein,
C. Whitlock, D. Grayson, and A. J. T. Jull, 2012,
Arguments and Evidence Against a Younger Dryas
Impact Event. , in Climates, Landscapes, and
Civilizations, Geophys. Monogr. Ser., vol. 198,
edited by L. Giosan et al. 13–26, AGU, Washington,
D. C., doi:10.1029/2012GM001209.
http://www.agu.org/books/gm/v198/2012GM001209/2012GM001209.shtml

Best wishes,

Paul H.

Younger Dryas Impact Hypothesis Discussion Heats Up Again

Younger Dryas Impact Hypothesis Discussion Heats Up Again

The discussion about the Younger Dryas Impact has
heated up again with a flurry of comments in the
Proceedings of the National Academy of Sciences of
the United States of America concerning the paper:

Israde-Alcántara, I., J. L. Bischoff, G. Domínguez-Vázquezc,
H.-C. Li, P. S. DeCarli, T. E. Bunch, J. H. Wittkef, J. C. Weaver,
R. B. Firestone, A. West, J. P. Kennett, C. Mercer, S. Xie,
E. K. Richman, C. R. Kinzie, and w. S. Wolbach, 2012,
Evidence from central Mexico supporting the Younger
Dryas extraterrestrial impact hypothesis. Proceedings
of the National Academy of Sciences of the United States
of America. vol. 109, no. 13, pp. E738-E747
http://www.pnas.org/content/109/13/E738.abstract

The replies, which can be found at
http://www.pnas.org/content/early/recent , are

1. Blaauw, M., V. T. Holliday, J. L. Gill, and K. Nicoll, 2012,
Age models and the Younger Dryas Impact Hypothesis.
PNAS 2012 ; published ahead of print July 24, 2012.

2. Boslough, M., 2012, Inconsistent impact hypotheses
for the Younger Dryas. PNAS 2012 ; published ahead of
print July 24, 2012.

3. Daulton, T. L., 2012, Suspect cubic diamond “impact”
proxy and a suspect lonsdaleite identification. PNAS 2012 ;
published ahead of print July 24, 2012.

4. Gill, J. L. J. L. Blois, S. Goring, J. R. Marlon, P. J. Bartlein,
K. Nicoll, A. C. Scott, and C. Whitlock, 2012, Paleoecological
changes at Lake Cuitzeo were not consistent with an
extraterrestrial impact. PNAS 2012 ; published ahead of
print July 24, 2012.

and 5. Hardiman, M., A. C. Scott, M. E. Collinson, and R. S.
Anderson, 2012, Inconsistent redefining of the carbon
spherule “impact” proxy. PNAS 2012 ; published ahead
of print July 24, 2012.

The reply to the above comments, which is also at
http://www.pnas.org/content/early/recent , is:

Israde-Alcantara, I., J. L. Bischoff, P. S. DeCarli, G.
Domínguez-Vázquez, T. E. Bunch, R. B. Firestone,
J. P. Kennett, and A. West, 2012, Reply to Blaauw et al.,
Boslough, Daulton, Gill et al., and Hardiman et al.:
Younger Dryas impact proxies in Lake Cuitzeo,
Mexico. PNAS 2012 ; published ahead of print July
24, 2012.

A related paper is:

van Hoesel, A., W. Z. Hoek, F. Braadbaart, J. van der Plicht, G. M.
Pennocka, andM. R. Drurya, 2012, Nanodiamonds and wildfire
evidence in the Usselo horizon postdate the Allerød-Younger
Dryas boundary. Proceedings of the National Academy of
Sciences of the United States of America. vol. 109, no. 20,
pp. 7648-7653.
http://www.pnas.org/content/109/20/7648.abstract

Best wishes,

Paul H.

New Paper About Younger Dryas Impact Hypothesis

New Paper About Younger Dryas Impact Hypothesis
Friday, October 1, 2010 3:52 AM

by Paul H.

Dear Friends,

A new paper about the Younger Dryas Impact Hypothesis has been published. Associated with it are a number of comments, both pro and con, about it. The paper is:

Holliday, V. T., and D. J. Meltzer, 2010, The 12.9-ka ET
Impact Hypothesis and North American Paleoindians.
Current Anthropology. vol. 51, pp. 575–607 (Oct. 2010)
0011-3204/2010/5105-0002
http://www.journals.uchicago.edu/doi/abs/10.1086/656015
http://www.journals.uchicago.edu/doi/pdf/10.1086/656015

The Current Anthropology press release about the above paper can be found at:

http://www.journals.uchicago.edu/doi/story/10.1086/pr.2010.09.29.3011

Comments about this paper is “No Evidence For Clovis Comet Catastrophe, Archaeologists Say” by Alton Parrish at:

http://beforeitsnews.com/story/195/688/No_Evidence_For_Clovis_Comet_Catastrophe,_Archaeologists_Say.html

Yours,

Paul H.

Debate Over Younger Dryas Impact Hypothesis Continues

Saturday, September 4, 2010 3:39 AM

by Paul H.

On the side of people disputing the Younger Dryas Impact
hypothesis there is:

Kerr, R. A., 2010, Mammoth-Killer Impact Rejected.
Science Now, August 30, 2010
http://news.sciencemag.org/sciencenow/2010/08/mammoth-killer-impact-rejected.html

Dalton, R., 2010, Comet theory carbonized: Sediment
studies rule out impact as cause of ancient cold spell.
Nature News. August 31, 2010.
http://www.nature.com/news/2010/100831/full/news.2010.441.html

Impact hypothesis loses its sparkle, Physorg.
August 30, 2010,
http://www.physorg.com/news202382634.html

http://www.physorg.com/news195979458.html

Kerr, R. A, 2010, Mammoth-Killer Impact Flunks Out.
Science, vol. 329, no. 5996, pp. 1140 - 1141
DOI: 10.1126/science.329.5996.1140
http://www.sciencemag.org/cgi/content/summary/329/5996/1140

The paper is:

Daulton, T. L., N. Pinter, and A. C. Scott, 2010,
No evidence of nanodiamonds in Younger–Dryas
sediments to support an impact event. Proceedings
of the National Academy of Science of the United
States. Published online before print August 30, 2010,
doi: 10.1073/pnas.1003904107
http://www.pnas.org/content/early/2010/08/26/1003904107.abstract?sid=f62eef7c-9d13-48e9-a003-ddd93d93d75b

On the other hand, the BBC Article stated:

“Allen West said further nanodiamond evidence in support
of the impact theory would be published in the coming weeks.”

One of these papers is:

Kurbatov, A. V., P. A. Mayewski, J. P. Steffensen, A. West, D. J.
Kennett, J. P. Kennett, T. E. Bunch, M. Handley, D. S. Introne,
S. S. Que Hee, C. Mercer, M. Sellers, F. Shen, S. B. Sneed, J. C.
Weaver, J. H. Wittke, T. W. Stafford, J. J. Donovan, S. Xie, J. J.
Razink Jr., A. Stich, C. R. Kinzie, W. S. Wolbach, Discovery of
a nanodiamond-rich layer in the Greenland ice sheet. Journal
of Glaciology, v. 56, n 199, 749-759.

PDF file at :
http://cci.siteturbine.com/facultystorm/profile/research/publication.php?publicationId=7406

http://www.climatechange.umaine.edu/people/profile/andrei_kurbatov

Thus, the debate continues.

Yours,

Paul H.

New Paper About Clovis, Folsom, and Younger Dryas Impact Hypothesis

Sunday, June 20, 2010 2:55 PM

The paper is:

Collard, M., B. Buchanan, M. J. Hamilton, M. J. O'Brien,
2010, Spatiotemporal dynamics of the Clovis–Folsom
transition. Journal of Archaeological Science. In Press,
Accepted Manuscript, Available online 1 June 2010
Abstract at http://dx.doi.org/10.1016/j.jas.2010.05.011

The paper concludes:

"The results of our study clearly falsify the predictions of
the extraterrestrial impact hypothesis. Both the finding that
the northern Folsom sites are earlier than the southern
Folsom sites, and the finding that there is a hiatus between
Clovis and Folsom in the south of the latter’s range as
well as spatial and temporal overlap of Clovis and Folsom
in the north run counter to the predictions of the extraterrestrial
impact hypothesis."

Yours,

Paul H.

PDF File of Scott et al. (in press) Fungus, Not comet or Catastrophe Paper Now Online

Sunday, June 20, 2010 3:09 PM

Scott, A. C., N. Pinter, M. E. Collinson, M. Hardiman,
S. Anderson, A. P. R. Brain, S. Y. Smith, F. Marone,
and M. Stampanoni, in press, Fungus, not comet or
catastrophe, accounts for carbonaceous spherules in
the Younger Dryas "impact layer". Geophysical Research
Letters doi:10.1029/2010GL043345, in press

can be downloaded for free from

http://sciences.blogs.liberation.fr/files/youg-dryas-sans-impact.pdf

It is part of a web page, "Les mammouths n'ont pas été
tués par une comète" at

http://sciences.blogs.liberation.fr/home/2010/06/les-mamouths-nont-pas-%C3%A9t%C3%A9-tu%C3%A9s-par-une-com%C3%A8te.html

Yours,

Paul H.