END-TRIASSIC EXTINCTION EVENT

Question 1

evidence of the causes of the end-triassic extinction

Answer 1

• meteorite impact
• sea level change
• central atlantic magmatic province (CAMP)

Question 2

evidence of the causes of the end-triassic extinction: meteorite impact

Answer 2

evidence provided by Manicougan crater which is located in Quebec (south eastern canada)

Question 3

evidence of the causes of the end-triassic extinction: sea level change

Answer 3

sea level curves indicate major regression toward end of triassic period

major sea level fall would lead to sever loss of habitats for shallow marine species (e.g conodonts/ammonites)

BUT, sea level change was gradual and does not explain why some o the record extinction were so rapid

Question 4

evidence of the causes of the end-triassic extinction: CAMP

Answer 4

B