The Cretaceous Period was a time of considerable geological activity.
In the Early Cretaceous the supercontinent,
Gondwanaland began to break up:
This was marked by widespread volcanism
and had significant consequences on
the distribution of plants and animals across the Earth's surface.
There were polar land masses such as North Alaska (in Arctic Circle) and
South Australia (in Antarctic Circle) and sea levels were 25 m higher than
they are today.
- India began to move north;
- the North Atlantic began to open;
The Early Cretaceous Wealden freshwater sediments and plants of Europe
indicate warm humid conditions.
| Early Cretaceous
| Late Cretaceous |
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