EESA06H3 Lecture : Lecture 3
Document Summary
Modern planet earth evolving as we speak, plates moving and stuff like that, earth history all about history of the oceans, examine how oceans form. Stage 2: red sea: along egypt, difference between a sea and an ocean is that ocean has a mid ocean ridge along its centre line. Oceans are widening all the time and seas don"t: red sea is a little embryonic ocean that one day will widen. Red box on map: plates, the arabian plate. Volcanic ash: blankets of ash deposit on landscape, can date the ash, species started in east african rifts, the place is called kariandusi where first hominins lived, homo habilis- handy man. cranial capacity of 650c. c: homo sapiens have 1200c. c. Afar triangle: where arabian plate is and the plates are widening, this is where lucy came from, australopitiscene, right in the t riple junction, this is where the oceans are being built.
