The Earth 66m years ago

Map shows the amount of organic matter in sedimentary rocks that would have been ejected had the asteroid struck, and the subsequent drop in temperature

Hydrocarbon levels

Low

Medium

High

Very high

4C

8C

11C

0

Drop in temperature

Impact crater

Continental shelf edges

Hydrocarbon levels

Low

Medium

High

Very high

Drop in temperature

4C

8C

11C

0

Impact crater

Continental crust

shelf edges