Geohistory
Which time Period is 230 million years ago?
Triassic
What is the half life of carbon?
5,730 years
What index fossil is letter P?
Isotelus
During which time period did the EARLIEST FORESTS appear?
Devonian
How many million years ago was New York on the Equator? (hint - look at the pictures!)
359 MYA
Which Era is the Devonian period part of?
Paleozoic
Which radioactive isotope is used for dating rocks and really old things?
Uranium-238
Which index fossils are part of the BRACHIPOD group?
I, H, G, F
Mucrospirifer, Pentamerus, Dinorthis, Lingulella
At the end of which period, did dinosaurs go extinct?
Cretaceous
What is the most recent Mountain Building Event (Orogeny)?
Alleghenian Orogeny
Which Era is there 4 consecutive rock layers? (Look at the NY Rock Record)
Paleozoic
What is Carbon’s daughter elements (What does Carbon turn into)?
Nitrogen-14
What is the most recent index fossil (pick one)?
AA or BB
Mammoth or Giant Beaver
Estimate – How many years ago were the EARLIEST FLOWERING PLANTS?
120 MYA
(will accept 110-130)
How long ago did Pangea begin to break up?
About 200 MYA
Quaternary
How many half lives has Carbon undergone if it has only 25% left of the original isotope?
2 half lives
Put the index fossil in order from oldest to youngest
Zittelloceras (T)
Ancyrocrinus (L)
Arctinurus (Q)
T, Q, L
What is the earliest life listed on Page 6? (Hint - use the fossil column)
Stromatolites
During which period was the last advance and retreat of the last continental ice sheet?
Quaternary
How many Zeroes are there in the age of the Earth?
Eight (4,600,000,000 = 4.6 billion)
What is Potassium-40's daughter elements (What does Potassium turn into)?
Argon-40
What is a characteristic of an index fossil?
Widespread
Abundant (Lots of Them)
Lived for a short period of time
How many years are in between the Permian Period?
47 years (299-252 mya)
During which Orogeny was there a collision between North America and volcanic island arc?
Taconian Orogeny