Clip description Keywords
A dramatic weathered sandstone landscape
A dramatic weathered sandstone landscape

Duration: 01:23

Weathering of the landscape is illustrated by towers of sandstone eroded by the wind.

 
Limestone weathering and erosion
Limestone weathering and erosion

Duration: 01:21

Many years of limestone erosion or weathering have formed China's stone forest.

 
Metamorphic rock formation
Metamorphic rock formation

Duration: 01:11

The formation of metamorphic rock is described and examples of different types and the rocks they originated from are given.

 
River channels suggest water existed on Mars
River channels suggest water existed on Mars

Duration: 01:16

Images from the Viking orbiters show geological formations on Mars that may have been created by water. This might once have supported life.

 
The formation of igneous rocks
The formation of igneous rocks

Duration: 01:35

An introduction into the three types of rock, with a special focus on igenous. Cooling rates and crystal sizes are mentioned.

 
The formation of sedimentary rock
The formation of sedimentary rock

Duration: 03:16

An introduction to the formation of sedimentary rock from sediments of weathered rock. Examples are given.

 
The grand canyon on Mars
The grand canyon on Mars

Duration: 01:59

A grand canyon exists on Mars that dwarfs the one on Earth.

 
Volcanic soil on the Moon?
Volcanic soil on the Moon?

Duration: 04:12

Crew from Apollo 17 discovered volcanic soil on the Moon, but it turned out to be ancient, not recent.

 

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