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Senior University Georgetown Winter 2013 Session 2 Creating Pathways for Ancient Peoples Some interesting Information sources Out of the East African Rift & Tropics nd into the country of South Africa Some interesting Information sources Geology in the News From the New York Times, Jan. 28 An American team drilled through one half mile of ice in Antarctica & recovered water samples from Lake Williams that may have life from 195 million years ago! Why the international interest in Antarctica? Its natural resources Argentina Australia South Africa How big is Antarctica? Now the Continental Drift of Antarctica last 195 million years Continental Drift of Antarctica last 195 million years Today 18,000 years ago 195 million years ago 94 million years ago From Nature magazine, Jan. 24 From Nature magazine, Jan. 24 The World Until Yesterday, Jared Diamond Book review Sustainable bio-energy production from marginal lands in the US Midwest Stable creeping fault segments can become destructive as a result of dynamic weakening Check Books the Sun youCity might library wantfor to read Nature Books you might want to read Prithviraj R, 2008; 19,000 Years of World History The Times, Complete History of the World, Overy Richard Illustrated Atlas of Exploration, 2011, Metro Books Atlas of Human Migration, Russell King, 2007 Now a quick review of last week A quick review of last week Oh, by the way, did anyone get any pictures of our sunsets this past week? Now a quick review of last week If you did and would like to share them with the class, send then to me [email protected] Remember from last week The Tropics Climate Zones; Eastern Hemisphere No world power or empire or religion has ever been created in the tropics Why do we post the tropics? Back to why I postulate that deposits of copper, tin, iron, coal, and oil have shaped human history We looked at how archeologists divide human history Archeologists’ Division of Historic Time Based on Artifacts: their age & composition Iron, Coal, Oil Iron-Coal Iron, Coal, Petroleum, & Uranium Age Iron, Coal, & Oil Age Iron & Coal: Industrial Age Iron & Coal: Renaissance 1950 to Present 1900 to 1950 AD 1700 to 1830 AD 1450 to 1700 AD IronGoogle & Coal: Ages What did Earth add to our knowledge? MyMiddle conclusion: 470 to 1450 AD Iron Age 2 Romeview the same time to 470 AD How do Historians Iron 750 BCE division of human history? Iron Age 1 Greece 1400 to 750 BCE th Bronze Age 3300 to 1400 BCE Copper & tin Great nations (aka world powers) must have had iron & coal and in the 20 century oil Copper Flint & Obsidian Copper Age 3300 to 3000 BCE Stone Age (end of Ice Age) 70,000 to 3300 BCE Historians’ Division of Human History Silicon Age Modern Age Steam Age Industrial Age Renaissance Middle Ages Roman Age 1950 to Present 1900 to 1950 1830 to 1950 1700 to 1830 1450 to 1700 470 to 1450 to 470 Where were these farming empires750and why? Large scale farming First world empires Hunting & Gathering Iron Age Bronze Age 1400 to 750 3300 to 1400 Copper Age 3300 to 3000 Stone Age (end of Ice Age) 10,000 to 3000 Where Were the First Empires and Why? Mountains from Spain to China Northern Temperate Climate Zone Focus onThethe Six farming Empires Note: 1. Six empires based on large scale farming The Tropic climate zonesTemperate Zone 2. Located in the Northern 3. South of a discontinuous mountain chain (shielded from the melting glacier) The Six Earliest Major Civilizations: Located in the Six Major River Flood Plains of Eurasia Located in the southern half of the Northern Temperate Climate Zone Tigris Euphrates Yellow Yangtze Indus Ganges Northern Temperate Climate Zone Nile Nile From: Hammond Atlas, 1972 Focus on the river flood plains that humans might have migrated to as they moved out of Africa Focus: River flood plains where early human might have settled when they migrated out of Africa Tigris Euphrates Indus Nile Possible migration Routs to India & China Along major rivers & From: Hammond Atlas, 19 the coast lines! Possible Migration Routs to India & China Yellow Yangtze Indus Ganges What do all the earliest civilizations have in common? Major Rivers!!!! Without exception the 6 first human civilizations Back to the Historians’ Division of Human History “preferred” the 6 river flood plains of Eurasia!!! Historians’ Division of Human History Silicon Age Modern Age Steam Age Industrial Age Renaissance Middle Ages Floodplain empires conquered by Iron rich areas Large scale farming First world empires 1950 to Present 1900 to 1950 1830 to 1950 1700 to 1830 1450 to 1700 470 to 1450 Age 2 Rome 750BC to 470AD Iron Age 1 Greece Bronze Age 1400 to 750BC 3300 to 1400 Let’s focus on Greece and Rome Hunting & Gathering Copper Age 3300 to 3000 Stone Age (end of Ice Age) 10,000 to 3000 The Greek Empire: Alexander the Great The greatest concentration of farmland, iron and coal in the world!!!! Now the Roman Empire Iron & Coal Major River Flood plain The Roman Empire Iron & Coal Back toMajor the River Historians’ Divisions of Human History Flood plain Historians’ Division of Human History Based on how humans lived Iron, Coal, Petroleum, & Uranium Age Iron-Coal -Oil Competing Nations Industrial age Iron-Coal Age Competing Nations Internal Combustion is King Iron, engine Coal, & OilOil Age Coal is King Iron &Engine Coal: Industrial Age Steam Iron & Coal: Reformation Iron & Coal: Middle Ages 1950 to Present 1900 to 1950 AD 1700 to 1900 AD 1450 to 1700 AD 470 to 1450 AD Conclusions: World powers had or have: 1. “Owned “ or acquired farmland to feed Iron Age 2 Rome to 470 AD their people. Iron Age 750 BCE City state empires 2. landsWhat lacking farmland or Fe andofCoal, Finally: is Age the thetohistory Iron 1fossil Greeceevidence 1400 750 BCE them by military acquisition of scale theacquire human race: where, when, andtowhy? Large farming Bronze Agei.e. 3300 1400 BCE First empires (6) 3300 to 3000 BCE Hunting & gathering Copper Age Stone Age (end of Ice Age) 70,000 to 3300 BCE Clans & tribes What is the fossil evidence of the history of the human race: i.e. where, when, and why? Oldest fossil record of pre-humans and the advent of Homo-sapiens In Tanzania, Kenya, Ethiopia, & Sudan In the East African Rift Why in the Rift? Earliest humans Significance: Unique geologic environments lead to the advent of human species Let’s look at a Cartoon of the fossil evidence of earliest human history Earliest humans Significance: Unique geologic environments lead to the advent of human species Large Ape Habitat Today Homo sapiens Homo Neander thalensis Homo rhodesiensis What can we read from this cartoon? Homo Antecessor/ mauritanicus Homo erectus Pre-human bipeds Homo ergaster Rift Fossil evidence, last 2 million years of the beginning of Human History Homo sapiens Extinctions Homo Neander thalensis Homo rhodesiensis Extinction What could cause these extinctions? Homo Extinction Homo Antecessor/ mauritanicus Homo ergaster Rift erectus Oldest pre-human bipeds become extinct, about 1.4 million years ago Oldest pre-human bipeds migrate out of Africa to Europe 1.65 million years ago Oldest pre-human fossils 1.9 million years ago Continental Glaciation Focus on Homo sapiens Time of World History Uniquely human characteristics 1. Reason: language 2. Conscience (right & wrong) 3. Adapt to any climate Focus on Homo sapiens Last ice age Sapiens into Europe & Asia 70,000 years ago Sapiens in Americas 33,000 years ago Conclusions, Back to lastHumans week: are: Remember Tanzania Fossil sapiens, in East African Rift 150,000 years ago Missing Link? & Eve? very recent advent In the East African Rift (breakingAdam away from Africa) unlike any older species; esp, language Site of pre-human and Homo sapiens fossils spread from East African rift through-out world In the Tropics, no copper, tin, iron, coal, or oil a people of the last ice age Not an important land, even for Africa pioneers in exploration and migration (seeking newweek natural resource riches?) Is this the Also, last we considered what early evidence of human selfishness caused the that Rifttheand Biblethe calls break-up original sin? of Remember this slide the eastern half of the African continent 3-D Schematic View of the Earth Ocean Continental Crust Oceanic Crust Mantle convection cells here Radio-active heat generated here Next, the heat convection cells in the mantle Complex Shape of Mantle Convection Cells Can you find Africa in the top panel? Note that the convection cell is up-lifting eastern Africa How does this look in cross section? Mantle Convection Cell under a Continent Continental Crust Next, a mantle convection cell affecting continental crust Heat Convection Cell Uplifting a Continent Continental Crust up-lifted & rifted (pulling apart) The rifting produced the long, narrow, deep lakes in Tanzania Long Narrow Rift Valley Lakes Tanzania Rift lakes are the southern extension of the East African Rift System Let’s look at the “big picture” Plate Tectonics: Uplift and Rift Faulting over a Sub-Crustal Mantle Convection Cell East Africa: Mantle convection cell Tanzania East Africa: Triple junction Rift Valleys formed & Volcanoes Why was this event important? This unique geological event More detail on the East African coincided with the advent of triple junction the human race! Another view focused on the East African Rifts ental East Africa: Triple junction Back to Tanzania: what natural resources does Tanzania have? Example: Tanzania, Hammond Atlas Natural Resources Map Note: no iron or coal or major river farming flood plain and Tanzania is in the Tropics Tropics gold diamonds Tanzania Why are natural resources of copper, tin, iron, and coal important? We’ll try to convince you that they are required for a land to become a major nation. Tanzania apparently doesn’t have the natural resources to be a major nation And being in the Tropics argues against large scale farming What supports the proposition that a world power must have access to copper, tin, iron and coal? Let’s apply what we’ve learned as Sandi takes to the country of South Africa The Tropics Climate Zones; Eastern Hemisphere Where is the country of South Africa? Possible migration routes out of the East African Rift No world power or empire or religion has ever been created in the tropics Southern climate Temperate Zone http://online.sfsu.edu/rapidviz/523_infodesign_ posters/523_human_origins_eugene_wong.pdf Possible migration routes out of the East African Rift Possible migration routes out of the East African Rift Tropics How did early humans get from Tanzania to South Africa? We don’t know, but probably by rivers Temperate climate Human Migration out of the East African Rift Nile River Tropics Congo River Tanzania What did they find in South Africa? Zambezi River Orange River What did early humans find when they migrated into the country that is now South Africa? Tropics What else does the land of South Africa have? South Africa South Africa: is out of the Tropics! has a major river, the Orange What did early humans find when they migrated into the country that is now South Africa? Tropics What are the natural resources of Thethe natural resources that world Africa? empires and powers? country ofmake South What natural resources will we be looking for on these maps? 1. Large areas of farmland South Africa 2. Deposits of copper and tin 3. Deposits of iron and coal 4. Deposits of oil Topographic Map; Southern Africa What route did first humans take to get to South Africa? What route did first humans take to get to the country of South Africa? Stay in the hills where hunting & gathering will support the large stone age population The Natural Resources of the Country of South Africa Copper Tin Iron Coal What else do we post on these maps? The Tropics Why do we post the tropics? Farm land Why have we highlighted copper, tin, iron & coal? We will try to convince you that these natural resource shaped & continues to shape human history South Africa on Google Earth South Africa A Random View of Farm Land on Google Earth What’s going on here, farm land in the hills rather than in the stream valleys Tune in next week and we’ll find out and we’ll follow humans into Europe