Ebel, D. S., and Grossman, L., 2005, Spinel-bearing spherules condensed from the ... 2004, Impact lithologies and their emplacement in the Chicxulub impact crater: ...
Roter, S. Africa 2.5 km 5 Million years. Wolf Creek, Australia 0.875 Km 300,000 years ... Manicougan Lake, Que. 100 km 212 Ma. Chicxulub, Mex. 170 Km 65 Ma ...
IT CAME FROM Asteroids, comets, and YOU IT CAME FROM Asteroids, comets, and YOU Formation of the Solar System Formation of the Moon Luna The Asteroid Belt is not like ...
... ants and bees Are these evolutionary arrivals unrelated to the ... 50 of the 500 modern families had arisen Cretaceous insect radiation New groups evolved ...
Dinosaur Evolution How do we know when dinosaurs lived? Layers of sedimentary rock & absolute dating Late Triassic (during Mesozoic) through end of the Cretaceous ...
Interplanetary Bodies Asteroids Solid bodies having no atmosphere Have well determined orbits More than 2000 in our solar system Asteroids Other info: Located mostly ...
Repr sentation tridimensionnelle des anomalies gravim triques. Localisation du crat re de ... II) Les causes de la crise Cr tac /Pal oc ne : des v nements ...
Hydrocode Simulation of the Ries Crater Impact This work was conducted as part of a NASA Astrobiology project (David A. Kring, PI). The modeling team included
Boundary in the rock record separating the Cretaceous and Tertiary Periods ... Extraterrestrial cause for the Cretaceous/Tertiary extinction, Science, 208, ...
Natural Science How Science Works Many factors might have contributed to the KT extinction. Just as the extinction of an endangered species today may be traced to ...
Cretaceous-Tertiary Boundary Impact. Asteroid Impact : The Dinosaur Killer ... end of the 'Age of Reptiles' (Cretaceous period) and the beginning of the 'Age ...
Natural Science How Science Works In short, the evidence points to several potential reasons for the mass extinction. Which is the true cause? Well, perhaps they all are.
Asteroid belt. Kuiper Belt and Oort Cloud. IMPACT EVENTS. Known impact craters ... Too dark to see for 1-6 months. No photosynthesis for 2 months to year ...
SEM Photo of Glass Spheres and Globules = Molten Droplets of Rock ... Turtles. Mammals. Lizards. Baculites compressus time. approximately 73 MYA. Pierre Seaway ...
* Por: Eder Martioli Surgimento dos dinossauros ~250 milh es de anos Ano novo In cio do ano Extin o dos Dinossauros ~65 milh es de anos 20 set Surgimento dos ...
Did comet impacts deliver water and organic molecules important for the origins of life? Comet Shoemaker-Levy 9. Asteroid 1997XF11. 2 km diameter asteroid. ...
Too dark to see for 1-6 months. No photosynthesis for 2 months to year ... Carbonates and evaporites vaporized into sulfur gases and CO2 (with resulting acid rain ...
named for constellation containing the radiant point. Leonids shown here or plotted... plotted back to radiant in Leo. Caused by perspective the artist's ' ...
Earth s Magnetic Field Why does Earth have a global or world-wide magnetic field, while other similar planets either have no magnetic fields or very different kinds ...
Unfinished Earth. History and modern ... Excellent evidence on Moon, Mars and other terrestrial planets ... Earth the water planet. Earth the water planet ...
... 4. Impact Events & the Earth System. DATA. Asteroid: 7800 kg/m3. Diameter: 40 meters ... Velocity: 20,000 m/s towards the Earth. Find the Volume of the Asteroid ...
Comet Shoemaker-Levy 9. Meteor Showers. Dust from comet that remains in original comet's orbit. ... Oct 9. Draconids. 50. Swift-Tuttle. Aug 12. Perseids. 20 ...
Natural Science How Science Works Let's begin with the basic question of how biological inheritance works. In the mid-1800s, Gregor Mendel showed that inheritance is ...
2000 orbited 433 Eros for 1 year. Studied magnetic field, mass, orbit, composition & surface ... descent to surface of Eros. Images & data. Deep Space 1 ...
S EARTH ORIGIN Life on Earth Earliest known evidence of life was about 3.6 billion years ago Early life may have started in the intertidal zone or at black smokers ...
EROS orbital path. Gaspra orbital path. IDA orbital path. Mathilde orbital path ... http://neo.jpl.nasa.gov/cgi-bin/db_shm?sstr=EROS&group=ast&search=Search ...
Mesozoic : (Permian Cretaceous) huge in biodiversity. End Cretaceous ... All non-avian dinosaurs & pterosaurs gone. No terrestrial organisms 25 kg survive! ...
Title: Diapositiva 1 Author: Carlos Heredero Last modified by: Carlos Heredero Created Date: 3/8/2006 12:42:08 AM Document presentation format: Presentaci n en pantalla
Macroevolution Evolutionary change above a species Evolution on a grand scale Species in a new habitat Mass extinctions Early Earth ... EARLY TETRAPODS ...
Comets, meteorites, asteroids, hit planets and moons to create impact craters ... Comet Shoemaker-Levy 9. String of cometary fragments. Hit Jupiter in July, 1994 ...
Meteoroids relatively small space rocks (before hitting ... Near 'y' of Aquarius. 35. May 1-10 (May 6) Eta Aquarids. SW of Vega. 10. Apr 19-25 (Apr 22) ...
Life of the Mesozoic Era main points .. 1.marine invertebrates that survived end Permian extinction diversified and repopulated the seas 2. flowering plants evolve ...
an asteroid or comet whose orbit brings it close to the Earth; this includes an ... NEOs generally result from objects that ... Cpt. Jack Harkness, Torchwood ...
The terminal Cretaceous extinction. In the ... The terminal Cretaceous extinction ... iridium in a thin layer in Italy, at the Cretaceous Tertiary boundary ...