What two things did 19th century scientists do to determine the relative ages of sedimentary rock all over the world?

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Geography

Demarion Solis

6 January, 17:04

What two things did 19th century scientists do to determine the relative ages of sedimentary rock all over the world?

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Perez · Answer 1

They studied fossils and applied the principle that old layers of rock are below young layers! - ... What two things did 19th century scientists do to determine the relative ages of sedimentary rock all over the world? ... Making the world better, one answer at a time ... What are two things that sedimentary rocks change to?

Darren Black · Answer 2

They studied fossils (paleontology) and applied the principle that old layers or rock are lying just below young layers