Cenozoic Icehouse

Card Set Information

Author:
DrGirlfriend
ID:
262996
Filename:
Cenozoic Icehouse
Updated:
2014-02-20 16:40:15
Tags:
geology
Folders:
Geology 1020
Description:
Unit 3
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user DrGirlfriend on FreezingBlue Flashcards. What would you like to do?


  1. Defining Characteristics for Pliocene

    5.3 - 1.8 mya
    • Animals:
    • - similar to what we see today, but BIGGER
    • - increased diversity in MAMMALS
    • - arrival of bipedal HUMANS

    • Climate:
    • - warmer at beginning of Pliocene
    • - very little polar ice = higher sea levels
    • - no Panama = mixing of Atlantic/Pacific Oceans = different ocean circulation than today
    • - about 3 mya see evidence of ice (glacial tills, striations, U-Shaped valleys) and see this through the rest of the Pliocene

    So, something started a cooling trend seen through the rest of the Pliocene

    3.5 - 3 mya = Great American Interchange
  2. Defining Features of the Pleistocene

    1.8 mya - 11,500 y.a.
    • Animals:
    • - large MAMMALS in NORTH AMERICA (camels, mammoths)
    • - arrival of HUMANS in NORTH AMERICA (~ 15,000 y.a.)

    • Climate:
    • - huge climate fluctuations (glacial/interglacial)
    • - Glacial = cold and dry
    • - Interglacial = warmer and more humid
  3. Great American Interchange
    Animals migrated in the Americas

    From North America to South America: camels, pigs, deer, horses, elephants, tapirs, rhinos, skunks, rats, squirrels

    • From South to North America:
    • opposums, anteaters, armadillos, porcupines, sloths

    • ---> more species migrated South than North
    • ---> migration = competition = extinction
  4. Mega fauna present in North America during most of Pleistocene
    Mammoths

    Dire Wolf

    Mastadon

    Sabre-toothed Cat

    Ground Sloth

    Lion

    Short-Faced Bear

    Woodland Muskox

What would you like to do?

Home > Flashcards > Print Preview