Lecture 1- Introduction to the Quaternary Flashcards
1
Q
Why is 16O evaporated from the ocean easier?
A
It’s lighter
2
Q
If ice sheets increase in Ocean
A
δ18O levels increase
3
Q
Delta 18O”
δ18O (‰) =
A
18O/16O ratio
4
Q
Two types of foraminifera
A
Benthic and Planktonic
5
Q
Tarantian
A
Base peak Eemian Warm Period at 129+-5ka
6
Q
Ionian
A
Base onset Brunches chronozone
7
Q
Calabrian
A
Base near top of Olduvai chronozone (nannofossil extinction)
8
Q
Gelasian
A
Base onset Matuyama chronozone
9
Q
Quaternary
A
Period of extensive ice coverage
10
Q
Chibanian
A
Base of Tarantian / top of Ionian
11
Q
Processes of dating glacial deposits
A
Radiocarbon dating, thermoluminescence and radionuclides
