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Glaciology

Geological Time Scale

Subject: 
Environmental Science
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Historical geology
Phanerozoic
Geologic time scale
Glaciology
Cenozoic
Ice ages
Climate history
Quaternary
Pleistocene
Epoch
Pliocene
Quaternary glaciation
Environment
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Geologic time scale
Phanerozoic
Historical geology
Planetary science
Climate history
Extinction events
Geological history of Earth
Cenozoic
Cretaceous
Permian
Pleistocene
Mesozoic
Environment
geology time scale geologic eon epoch

Eon Era Period Epoch Major Events Phanerozoic Cenozoic Quaternary (0-1.6 million yrs BP) Holocene (Present-10,000 yrs) Modern humans develop. Pleistocene Ice Age Interglacial. Pleistocene (10,000 -1,600,000 yrs) Pleistocene Ice Age. Extinction of many species of large mammals and birds. Tertiary Pliocene (1.6-5.3 million yrs) Development of hominid bipedalism. Cascade Mountains began forming. Climate cooling. Miocene (5.3-24 million yrs) Chimpanzee and hominid lines evolve. Extensive glaciation in Southern Hemisphere. Climate cooling. Oligocene (24-37 million yrs) Browsing mammals and many types of modern plants evolve. Creation of the Alps and Himalaya mountain chains. Volcanoes form in Rocky Mountains. Eocene

Chapter 1 Notes

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US History
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Geology
Historical geology
Physical geography
Glaciology
Geology of Minnesota
Supercontinents
Climate history
Ice ages
Canadian Shield
Bering Sea
Americas
Continent
Environment

Chapter 01 - New World Beginnings---33,000 B.C.-A.D. 1769. ?I. The Shaping of North America 1. 225 million yrs. ago supercontinent 2. Mountains-- Appalachians pre separation, all others after making them ?American? mountains. 3. Canadian Shield- NE corner of Americas, maybe first above sea level 4. Ice Age- 2 million yrs. ago--2 mile thick ice, Canada, N. America 5. Glacial action eroded Canadian Shield II. Peopling the Americas 1. The Land Bridge-- Sea level dropped because of glaciers exposing a land bridge. ? ? Bering Sea between Siberia and Alaska 2. Nomadic hunters following migratory game herds 3. Ice Age ended, glaciers melted, land bridge under water--10,000 yrs. ago 4. When Europeans arrived in 1492-- 54 million people lived in the Americas.

arctic

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Environmental Science
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Glaciology
Physical geography
Earth
Planetary science
Polar ice packs
Sea ice
Arctic Ocean
Arctic
National Snow and Ice Data Center
Ice
Environment

Arctic sea ice hits record low, and keeps going Summer storm and thin ice probably contributed to massive melt By Alexandra Witze October 6th, 2012; Vol.182 #7 (p. 5) Text Size Enlarge Arctic sea ice (shown in white) covered 4.10 million square kilometers on August 26, surpassing the previous record low set on September 18, 2007. The orange outline shows the 1979-2000 average sea ice extent for that day. NSIDC With weeks still left in the summer melt season, the Arctic Ocean?s floating skin of ice has already shrunk to a record minimum. As of August 26, Arctic sea ice covered 4.10 million square kilometers ? 70,000 square kilometers below the previous satellite-era record from 2007, according to the National Snow and Ice Data Center in Boulder, Colo.

Political Organization in Early China

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World History
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Geography of China
Physical geography
Geography of Asia
Glaciology
Loess
Pedology
Sediments
Yellow River
Yangshao culture
World Wide Web
Soil
CNote
Political Organization in Early China A. Early Agricultural Society and the Xia Dynasty 1) The Yellow River a. Water source at high plateau of Tibet b. Loess soil carried by the river’s water, hence “yellow” c. “China’s Sorrow”--extensive flooding d. Loess provided rich soil, soft and easy to work 2) Neolithic societies after 5000 B.C.E. a. Yangshao society, 5000-3000 B.C.E. b. Excavations at Banpo village: fine pottery, bone tools 3) The Xia Dynasty a. Archeological discovery of the Xia is still in its early stages b. Established about 2200 B.C.E. c. Legendary King Yu, the dynasty founder, a hero of flood control
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