Reference no: EM131611035

Shale - a fine-grained rock of clay or mud with layers.

Tillite - a rock formed from sediment deposited by a glacier. These rocks of angular grains of varying sizes and minerals

Questions

1. Look at the stratigraphic column for South Africa.

a) Which rock layer is the oldest?

b) Which rock layer is the youngest (most recent)?

2. During what age were glaciers present in all four areas?

3. Three areas, as indicated by the columns were once covered by an ocean.

a) which three areas?

b) when (what age) were they covered?

4. During what age did all four areas have extensive swamps?

5. Based upon the plant and animal fossils what is the most recent time that Gondwana could have been a single continent?

6. When did extensive volcanic activity first occur on Gondwana?

Attachment:- assignment_gondwana.rar