EAE1011 Lecture Notes - Lecture 3: Western Australia, Central Australia, Structure Of The Earth

• School: Monash University
• Department: Science - Atmospheric Science
• Course: EAE1011
• Professor: Marion Anderson

Document Summary

Eae1011 lecture 3 - earth, atmosphere and environment. Planet earth - what we know and how we know it. Due to gravitational settling when earth still molten while solar system still forming. Heavy elements (fe, ni) settle to centre. Earth in a blender: 1. iron (fe) 34. 6, 2. oxygen (o) 29. 5, 3. silicon (si) 15. 2, 4. magnesium (mg)12. 7, 5. 8% consists of the other 88 naturally occurring elements. Defined by composition of each solid layer. Defined by behaviour of each solid layer. Inner core (generates a magnetic field while spinning) Materials brought up to surface from lower crust and upper mantle. Parts of the (cid:373)a(cid:374)tle at surfa(cid:272)e (cid:272)alled (cid:862)(cid:454)e(cid:374)oliths(cid:863) = foreig(cid:374) sto(cid:374)es = dia(cid:373)o(cid:374)ds & oli(cid:448)i(cid:374)e. As mountains erode, the rocks at their base, formed deeper in the crust, are exposed at the surface. E. g. , broken hill, mt isa, north of west australia, parts of central australia, eroded parts of the himalayas.