END-PERMIAN EXTINCTION EVENT (THE GREAT DYING)

Question 1

what family species went extinct

Answer 1

-Trilobites
-Rugose and tabulate corals
-Productacean brachiopods
-Cryptostomate and
fenestrate bryozoans
-Blastoid echinoderms
-Fusulinid foraminifera

Question 2

super continent which formed in the permian period

Answer 2

pangaea

Question 3

causes of the end-permian extinction event

Answer 3

• plate tectonics
• the siberian traps
• volcanic eruptions

Question 4

cause of the end-permian extinction event - plate tectonics

Answer 4

four separate continents and an equatorial seaway

the four continents sutured together plus a 100 m drop
in sea level. The resulting supercontinent lies across the equator, forcing the equatorial current pole-ward

The area of the continental shelf is drastically reduced, and the climatic gradient is weakened

Question 5

cause of the end-permian extinction event - what is the siberian traps

Answer 5

siberian trap reps 1 of the largest flood basalt provinces on earth and erupted 251 million years ago over about 1 mill years

eruption generatd 2-3 mill km3 of basalt lava, coving 3.9 mill km2 to a depth of 400-300m

Question 6

cause of the end-permian extinction event - effect of the siberian traps

Answer 6

so large/violent that it could have casued worldwide atmospheric contamination by injecting vast amounts of dust and sulphate gases into the atmosphere

the world climate could have been affected with addition of volcanic gasses in atmosphere