E+Team

=**The Cretaceous/Tertiary Mass Extinction**=

Team members: Ben, Danielle, Ginny, Jordan, Kelsey, Levi, Peter, Staci, Xi-Yi
1. WHO WENT EXTINCT? What did the Cretaceous extinction look like? Who died? Who lived? And how quickly did certain plants and animals disappear? What did the end of the Cretaceous (Maastrichtian Stage) look like? And what did the beginning of the Tertiary (the Paleocene Period) look like? How bad were the extinctions really? (All these questions tie into parts of chapter 15 and can be researched much more online.) RESEARCHERS: DANIELLE AND XI-YI URLS:

2. CAUSE OF THE K/T EXTINCTION: COMET / ASTEROID IMPACT? What is the evidence for this particular cause? What is the scenario for what happened? What parts of the world were affected? How would climate, etc. have been affected? How well do we know what the scenario would have been and what is the evidence for this scenario? (Again, chapter 15 covers much of this research area in brief but much more can be researched online.) RESEARCHERS: KELSEY, JORDAN AND LEVI (?) URLS:

http://www.enchantedlearning.com/subjects/dinosaurs/extinction/Asteroid.html Basic info http://www.lbl.gov/Science-Articles/Archive/dinosaur-extinction.html Evidence http://www.pbs.org/wgbh/evolution/extinction/dinosaurs/asteroid.html Evidence http://www.ucmp.berkeley.edu/education/events/cowen1b.html Weather impact, scenario

3. CAUSE OF THE K/T EXTINCTION: VOLCANIC ERUPTIONS (DECCAN TRAPS) IN INDIA? Same questions as in number 2 above. (Chapter 15 hardly mentions this but there has been quite a heated controversy surrounding this idea -- although mostly discounted now.) RESEARCHERS: PETER AND BEN URLS:

code http://www.geneticarchaeology.com/Research/Volcano_In_Siberia_Caused_The_Greatest_Mass_Extinction_Event_Of_All_Time.asp

code Citations: code Biotic effects of late Maastrichtian mantle plume volcanism: implications for impacts and mass extinctions

Gerta KellerCorresponding Author Contact Information, a, E-mail The Corresponding Author aDepartment of Geosciences, Princeton University, Princeton, NJ 08544, United States Received 31 August 2003; accepted 9 September 2004. Available online 2 November 2004.

Title: Age, chemo- and biostratigraphy of Haiti spherule-rich deposits: a multi-event K–T scenario.Find More Like This Authors: Keller, Gerta Adatte, Thierry Stinnesbeck, Wolfgang Stüben, Doris Berner, Zsolt Source: Canadian Journal of Earth Sciences; Feb2001, Vol. 38 Issue 2, p197-227, 31p

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Volcanism, impact and mass extinctions: incredible or credible coincidences?star, open

Rosalind V. Whitea and Andrew D. SaundersCorresponding Author Contact Information, a, E-mail The Corresponding Author aDepartment of Geology, University of Leicester, University Road, Leicester, LE1 7RH, UK Received 3 December 2003; accepted 9 September 2004. Available online 17 November 2004.

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Biotic effects of impacts and volcanism

Gerta KellerCorresponding Author Contact Information, a, E-mail The Corresponding Author aDepartment of Geosciences, Princeton University, Princeton, NJ 08544, USA Received 10 March 2003; revised 23 June 2003;  accepted 7 July 2003. Available online 6 September 2003.

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4. CAUSE OF THE K/T EXTINCTION: GRADUAL AND/OR SUDDEN CLIMATE CHANGES? The same types of questions can be asked for this research area as for the two other possible causes above. (Chapter 15 provides some evidence and discussion but there are many more recent ideas not covered, including how ocean changes may have created adverse climate conditions.) RESEARCHERS: GINNY AND STACI (?) URLS: Basic Info: http://www.enchantedlearning.com/subjects/dinosaurs/extinction/Other.html Ocean Changes: http://en.wikipedia.org/wiki/K%E2%80%93T_boundary http://www.ucmp.berkeley.edu/education/events/cowen3b.html Climate Changes: http://www.sciencedaily.com/releases/2003/01/030115065454.htm