Relative Dating

Relative dating

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Relative Age Dating Relative Age Dating Geologists use different types of evidence and principles to chronologically order rock units. There are 6 main principles: 1) 2) Original Horizontality – Sediments and lava flows were originally deposited in horizontal layers Superposition – In an undisturbed sequence of rock, the oldest layer is at the bottom and the youngest is at the top 3) 3) 4) Original Lateral Continuity – Units extend laterally until they thin to nothing or reach the edge of their basin (see previous picture) Inclusions – If a piece of rock is included into another it is always older 5) 5) Cross­cutting Relationships – Any body that cuts across layers of rock is younger than the rocks that it cuts across 6) 6) Unc...
View Full Document

This note was uploaded on 10/23/2011 for the course GLY 1000 taught by Professor Parker during the Spring '11 term at FSU.

Ask a homework question - tutors are online