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Showing results for tags 'volcanoes'.
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Racki, G., 2020, Volcanism as a prime cause of mass extinctions: Retrospectives and perspectives, in Adatte, T., Bond, D.P.G., and Keller, G., eds., Mass Extinctions, Volcanism, and Impacts: New Developments: Geological Society of America Special Paper 544, p. 1–34 https://www.researchgate.net/publication/337951571_Volcanism_as_a_prime_cause_of_mass_extinctions_Retrospectives_and_perspectives https://www.researchgate.net/profile/Grzegorz_Racki Racki, G., Rakociński, M., Marynowski, L. and Wignall, P.B., 2018. Mercury enrichments and the Frasnian-Famennian biotic crisis: A volcanic trigger proved?. Geology, 46(6), pp.543-546. https://www.researchgate.net/publication/326031821_Mercury_enrichments_and_the_Frasnian-Famennian_biotic_crisis_A_volcanic_trigger_proved Let's be careful out there, Paul H.
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On Sunday I took a trip to the Natural History Museum in London. I queued up before it opened at 10am and even before then there was a long queue. I have not visited this museum since I was a child and spent an entire day there (10am to 4.30pm - a long time). I was surprised as it is a lot bigger than I remembered and there was so much to see. This place has the most wonderful things and is an incredible place to learn. The museum showcases a Baryonyx, Sophie the Stegosaurus (the world's most complete Stegosaurus) and more! The moving Trex and Deinonychus are also really realistic in the way they move. If you like your dinosaur teeth, the Megalosaurus and Daspletosaurus teeth are out of this world! There is something for everyone in this museum and I would highly recommend that you visit here if you have not already! A lot of the dinosaur specimens are casts taken from other museums but they are still cool to look at. I had taken the photos on my SLR and due to the size of the photos I had to reduce the quality of them to be able to post on the forum which is unfortunate but it's the only way otherwise the photos would take a really long time to load. There are more non-dinosaur related photos that I will be posting at some point later on but may take me some time to pick out. Enjoy the photos from this section of the museum! Blue Zone Dinosaurs (has a mix of some photos of crocs too)
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Volcanic crystals give a new view of magma https://phys.org/news/2017-06-volcanic-crystals-view-magma.html Tracking the buildup to volcanic eruptions University of Arizona, June 15, 2017 https://asunow.asu.edu/20170615-discoveries-asu-scientists-tracking-buildup-volcanic-eruptions Crystals once deep inside a volcano offer new view of magma, eruption timing (Volcanologists are gaining a better understanding of what’s going on inside the magma reservoir that lies below New Zealand’s Mount Tarawera volcano. They’re finding a colder, more solid place than they thought, according to research published today in the journal Science.) http://www.heritagedaily.com/2017/06/crystals-deep-inside-volcano-offer-new-view-magma-eruption-timing/115558 The paper is; Rubin, A.E., Cooper, K.M., Till, C.B., Kent, A.J., Costa, F., Bose, M., Gravley, D., Deering, C. and Cole, J., 2017. Rapid cooling and cold storage in a silicic magma reservoir recorded in individual crystals. Science, 356(6343), pp.1154-1156. science.sciencemag.org/cgi/doi/10.1126/science.aam8720 http://science.sciencemag.org/content/356/6343/1154 Yours, Paul H.
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Hello! I'm relatively new here, but I've been coming to this site for years to look at the great photos and read the discussions. I started this topic to share some of my own research that's going on right now about mass mortalities of marine invertebrates in Patagonia, Argentina. Over that past couple of years I've been working in Argentina, studying fossils (mostly decapods and mollusks) which were killed en masse by volcanic ash. We found some really interesting things in our first trip to the Valdes Peninsula, and documented that volcanic ash can have a killing effect on marine fauna even hundreds of kilometers away from the eruption! I'm also describing a new species of marine isopod that was found preserved in volcanic ash right now. This work is really exciting to me because there is a huge opportunity for new discovery. I hope to describe the numerous different effects volcanic ash has on marine ecosystems, and how they recover from catastrophic events. The ash also plays a really important role in fossil preservation processes, which I also hope to test and describe. I recently launched a "crowd funding" campaign on a website called experiment.com to help raise funds to go back to Argentina for a more comprehensive study of the mass kill sites we know about. If any of you are interested in learning more about the research, or donating to help support it, you can find a video, and other info at http://www.experiment.com/deathbyvolcanicash. I'm also interested in any comments or thoughts anyone has on this topic. I'm always looking for new field sites which may involve volcanic activity and marine fossils, and my research is also more broadly related to mass mortality events in the fossil record in general, so if anyone has any insight into any of this, please comment! Also, if anyone is in the Cleveland area, I'll be giving a talk to a local fossil club on Saturday, May 7th, so if anyone is interested, let me know! -
Atlantic Canadian mega-volcanoes blamed in mass extinction End Triassic extinction wiped out half the world's species 200 Ma (million years ago) http://www.cbc.ca/news/canada/new-brunswick/story/2013/03/22/science-end-triassic-mass-extinction-volcanoes.html Here's another article related to this subject.. http://www.sciencedaily.com/releases/2013/03/130321141450.htm
