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Volcano
A volcanic cone emerges from the clouds on a flight over the islands of Indonesia. The Java trench is one of the most tectonically and volcanically active regions of the earth.
Lystrosaurus
This incomplete but articulated skeleton is a specimen of Lystrosaurus, an extinct terrestrial vertebrate (synapsid) the remains of which are found in several distant locations in the southern hemisphere, including Antarctica. The widespread distribution of Lystrosaurus was used by early proponents of the continental drift theory to suggest the existence of a once unified supercontinent, Pangea. Hence, its iconic status in geology and paleontology. Specimen on display at the Chicago…
East African Rift System
Splitting apart Africa: The East African Rift System or Great Rift Valley is one of the best examples of a divergent plate boundary on land in the popular tectonic plate model. It extends almost 6000 km southward from the Afar triple junction between northern Ethiopia and the Arabian Peninsula through eastern to southern Africa, effectively splitting Africa into two separate plates. This results in thin crust with a high flow of heat from the Earth’s interior as well as a series of deep elongated…