2 8 10 Earth History - Georgia Tech School of Biology Earth...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
Georgia Tech School of Biology Spring 2008 Biology 1510 Earth History Major divisions of time Dating methods Stratigraphy and paleomagnetism Continental movement Oxygen in Earth history Web Resources UC Museum of Paleontology Historical Geology site at GPC
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Georgia Tech School of Biology Spring 2008 Biology 1510
Background image of page 2
Georgia Tech School of Biology Spring 2008 Biology 1510
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Georgia Tech School of Biology Spring 2008 Biology 1510
Background image of page 4
Georgia Tech School of Biology Spring 2008 Biology 1510 Radioactive Decay and Dating Decay of a radioisotope N = N o e - λ t λ = decay constant N = # atoms present Half life Definition: time required for half the atoms initially present to decay. – T (half life) = 0.693/ λ
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Georgia Tech School of Biology Spring 2008 Biology 1510 Radioactive Decay Campbell & Reece, Fig. 26.07
Background image of page 6
Georgia Tech School of Biology Spring 2008 Biology 1510 14 C Dating 14 C is an important dating tool for organic matter formed in the recent past Half life = 5700 yr 14 C is continually formed by cosmic ray bombardment of 14 N in the upper atmosphere. Despite some long-term variations, 14 C content of the atmosphere is roughly constant. The clock starts when biological tissues die and stop incorporating new C.
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Spring 2008 Biology 1510 Q#1: Radioisotope Decay 14 C has a half-life of 5,700 years. If a piece of wood has 12.5% of the initial
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/02/2010 for the course BIO 1510 taught by Professor Unknown during the Spring '07 term at Georgia Institute of Technology.

Page1 / 22

2 8 10 Earth History - Georgia Tech School of Biology Earth...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online