study the behaviors of different cultures
measures the amount of argon 40 buildup in volcanic rock.
Its half life is 1.250 billion years
used to find the absolute age of old samples.
study of the record of the Earth's magnetic field in rocks.
Led to the theory of continental drift and its transformation into plate tectonics.
25 million to 5 million years ago.
Means "less recent"
Warmer global climate
age of apes
youngest epoch of the niogene period
Means "continuation of the recent"
global cooling-andvance of ice sheets decrease in rainforests
age of mamals, hominids
small brain-375-550 cc
Last Common Ansestor
sharp rock served as a chopping tool
olduvai gorge in Tanzania
found in Kenya
found 45% of the skeloten
Lucy's pretty sister
body and brain slightly larger
cranal capacity-420-500cc (size of a chimps brain)
sagital crest (vegetarian)
ethiopia, tanzania, Kenya (East Africa)
ethiopia (East Africa)
1) habitation sites (where people are living)
a) open air sites (along shores in the open)
b) cave and rock shelters
2) correy sites (where they went to get raw materials for stone tools)
3) Kill sites (crushed skulls ect...)
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