Relative Dating

Use words such as “younger” or “older”. This technique is used to determine the age of a rock by comparing. A less advanced technique.

“The present is key of the past”. This refers to how the earth was shaped entirely by gradual forces still in operation.

Sedimentary rocks are originally formed in horizontal patterns.

Youngest is on top, oldest is at the bottom.

The geologic feature which cuts another is the younger of the two features.

Molten material rises up, which is considered to be the youngest. This is any material that becomes trapped within a rock or mineral durings its formation.

All rock layers are laterally continuous and may be broken up or displaced by later events.

The remains of species through time in definite order and recognizable order.

The three different unconformities

A type of relative dating wherein this method, the fossils of one layer are compared with another layer with known dating.

A branch of geology and the earth sciences that deals with the arrangements and succession of strata.

Branch of stratigraphy that uses fossils to establish relative ages of rock and correlate successions of sedimentary rocks within dispositional basins.

Layered rocks due to deposition. Made up of Sandstone, Siltstone and shale.