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Globally distributed iridium layer preserved within the Chicxulub impact structure


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Iridium in undersea crater confirms asteroid wiped out the dinosaurs

Hamish Johnston, Physics World, February 24, 2021, 

https://physicsworld.com/a/iridium-in-undersea-crater-confirms-asteroid-wiped-out-the-dinosaurs/

 

Tha paper is:

 

Goderis, S., Sato, H., Ferrière, L, et al. 2021, Globally distributed 

iridium layer preserved within the Chicxulub impact structure

Science Advances  24 Feb 2021: Vol. 7, no. 9, eabe3647

https://advances.sciencemag.org/content/7/9/eabe3647

 

There are arguments that seismic waves from the

Chicxulub impact did a superfrack job on the Deccan volcanoes

and magnified their eruptions. Go see;

 

Richards, M.A., Alvarez, W., Self, S., Karlstrom, L., Renne, P.R., 

Manga, M., Sprain, C.J., Smit, J., Vanderkluysen, L. and Gibson, 

S.A., 2015. Triggering of the largest Deccan eruptions by the impact. 

Geological Society of America Bulletin, 127(11-12), pp.1507-1520.

http://eprints.esc.cam.ac.uk/3289/1/Gibson bul gsa.pdf

http://pages.uoregon.edu/leif/resources/papers/GSAB_2015_Richards.pdf

https://pubs.geoscienceworld.org/gsa/gsabulletin/article-abstract/127/1112/1507/126064

 

Commentary on flood basalts and mass extinctions:

 

Ernst, R.E. and Youbi, N., 2017. How Large Igneous Provinces

affect global climate, sometimes cause mass extinctions, and

represent natural markers in the geological record. Palaeogeography, 

palaeoclimatology, palaeoecology, 478, pp.30-52.

Link, Ernst and Youbi (2017), at bottom of page at 

http://www.largeigneousprovinces.org/downloads

http://www.largeigneousprovinces.org/sites/default/files2/Ernst and Youbi 2017 PPP.PDF

https://www.sciencedirect.com/science/article/pii/S0031018217302857

 

Yours,

 

Paul H.

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