[meteorite-list] Younger Dryas Impact hypothesis GSA and AGU Abstracts

[Paul]

The GSA abstracts can be found in "T94. Impact Cratering 
from the Microscopic to the Planetary Scale II (GSA 
Planetary Geology Division; International Continental 
Scientific Drilling Program [ICDP]; GSA Sedimentary 
Geology Division; GSA Structural Geology and Tectonics
Division; GSA Geophysics Division; Paleontological 
Society; GSA International Division) at 

http://gsa.confex.com/gsa/2009AM/finalprogram/session_25177.htm

The abstracts are;

1. Dryas. Pinter, N., A. C. Andrew, and D. Ebel, 2009,
Extraterrestrial and Terrestrial Signatures at the Onset of 
the Younger Geological Society of America Abstracts with 
Programs. 

http://gsa.confex.com/gsa/2009AM/finalprogram/abstract_162563.htm

2. Holliday, V. T., and D. J. Meltzer, 2009, Geoarchaeology 
of the 12.9ka Impact hypothesis. Geological Society of 
America Abstracts with Programs. 

http://gsa.confex.com/gsa/2009AM/finalprogram/abstract_160959.htm

3. Paquay, F., S. Goderis, G. Ravizza, and P. Claeys, 2009, No
evidence of of extraterrestrial geochemical components at the
Bolling-Allerod/Younger Dryas Transition. Geological Society 
of America Abstracts with Programs. 

http://gsa.confex.com/gsa/2009AM/finalprogram/abstract_163154.htm

4. Surovell, T. A., and V. T. Holliday, 2009, Non-
Reproducibility of Younger Dryas Extraterrestrial Impact 
Results. Geological Society of America Abstracts with 
Programs. 

http://gsa.confex.com/gsa/2009AM/finalprogram/abstract_163912.htm

PDF files of various papers by Dr. V. T. Holliday can be 
found beneath "Publications of Vance T. Holliday" at:

http://www.argonaut.arizona.edu/holliday.htm

This includes:

Vance T. Holliday, David A. Kring, James H. Mayer, and Ronald J. 
Goble, Age and effects of the Odessa meteorite impact, western Texas, 
USA. Geology. vol.  33, pp. 945-947.  at:

http://www.argonaut.arizona.edu/articles/holliday_etal2005.pdf

The Abstracts to the 2009 American Geophysical Union
presentations for "PP15: Younger Dryas Boundary: 
Extraterrestrial Impact or Not?" have not been posted
yet. Eventually, they should appear at 

http://www.agu.org/meetings/fm09/program/scientific_session_search.php?show=detail&sessid=388
 
According to George Howard, http://www.georgehoward.net/clovis_comet_at_fall_2009_agu.htm ,
the titles of the accepted papers are:
 
1. Lost Impacts

2. High resolution Osmium isotopes in deep-sea 
ferromanganese crusts reveal a large meteorite impact 
in the Central Pacific at 12.4 ka

3. What Caused the Younger Dryas? An Assessment of 
Existing Hypotheses

4. An Independent Evaluation of the Younger Dryas 
Extraterrestrial Impact Hypothesis

5. Cosmic impact: What are the odds?

6. Cometary airbursts and atmospheric chemistry: 
Tunguska and a candidate Younger Dryas event

7. Problems with the Younger Dryas Boundary ( YDB ) 
Impact Hypothesis

8. Beringian Megafaunal Extinctions at ~37 ka B.P.: 
Do Micrometeorites Embedded in Fossil Tusks and 
Skulls Indicate an Extraterrestial Precursor to 
the Younger Dryas Event?

9. Airbursts in the Sky with Diamonds? Shock 
Limits to a Younger Dryas Impact.

10. The platinum group metals in Younger Dryas 
Horizons are terrestrial

11. Putting the Younger Dryas Cold Event into Context

12. Field-Analytical approach of land-sea records 
for elucidating the Younger Dryas Boundary syndrome

13 Evidence of four prehistoric supernovae <250 
parsecs from Earth during the past 50,000 years

14. Oblique impacts into low impedance layers

15. Cold Climate Related Structural Sinks Accommodate 
Unusual Soil Constituents, Pinelands National Reserve, 
New Jersey, USA.

16. Positive anomaly in platinum group elements and 
the presence of shocked diamonds: Two question marks 
at the Younger Dryas

17. Nanodiamonds and Carbon Spherules from Tunguska, 
the K/T Boundary, and the Younger Dryas Boundary Layer

18. Are Nanodiamonds Evidence for a Younger Dryas 
Impact Event?

19. Rockyhock and Kimbel Carolina Bays: Extraterrestrial 
Impact or Terrestrial Genesis?

20. No support from osmium isotopes for an impact event 
at the Bolling-Allerod/Younger Dryas transition

21. Climatic Control of Biomass Burning During the Last 
Glacial-Interglacial Transition

22. Human Population Decline in North America during 
the Younger Dryas

23. Summary of impact markers and potential impact
 mechanisms for the YDB impact event at 12.9 ka

24. Testing Younger Dryas ET Impact ( YDB ) Evidence 
at Hall’s Cave, Texas

25. Wildfires, Soot and Fullerenes in the 12,900 ka 
Younger Dryas boundary layer in North America.

Obviously, the discussion about the Younger Dryas Impact Hypothesis continues.

Yours,

Paul H.