Lec 2 Ch1 Ch2 Sprng 08

Lec 2 Ch1 Ch2 Sprng 08 - Lecture Outline CHAPTER 1 The...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
    CHAPTER 1: The Earth System (continued) 1. Layers of the Earth (continued). 1. More on the Earth system. 3. An overview of geologic time CHAPTER 2: Plate Tectonics 1. An overview of plate tectonics. 1. Types of plate tectonic boundaries. Lecture Outline
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
    0 (km) Continental crust (2.8 g/cm3) Horizontal distance not to scale Mantle (3.4 g/cm 3 ) Oceanic crust (3.0 g/cm3) 10 20 30 40 50 1. Layers of the Earth (continued) The crust :  continents are made of lighter rock  and thus literally “float” on material of higher  density ( isostacy ).      
Background image of page 2
    0 (km) Continental crust (2.8 g/cm3) Horizontal distance not to scale Mantle (3.4 g/cm 3 ) Oceanic crust (3.0 g/cm3) 10 20 30 40 50 Less dense continental crust floats on denser mantle.
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
    0 (km) Continental crust (2.8 g/cm3) Horizontal distance not to scale Mantle (3.4 g/cm 3 ) Oceanic crust (3.0 g/cm3) 10 20 30 40 50 Less dense continental crust floats on denser mantle. Continental crust is less  dense than oceanic crust.
Background image of page 4
    0 (km) Continental crust (2.8 g/cm3) Moho discontinuity Horizontal distance not to scale Mantle (3.4 g/cm 3 ) Oceanic crust (3.0 g/cm3) 10 20 30 40 50 Less dense continental crust floats on denser mantle. Continental crust is less  dense than oceanic crust.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
  1. Layers of the Earth Layers of the Earth defined by  PHYSICAL STRENGTH LITHOSPHERE : The crust and uppermost  mantle. Made of rocky silicates, mostly.  Cool and strong. ASTHENOSPHERE : Partially molten, but  mostly solid, hot silicate rocks. Convects  (circulates) and drives plate tectonics.  Hot  and weak. Lithosphere
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 41

Lec 2 Ch1 Ch2 Sprng 08 - Lecture Outline CHAPTER 1 The...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online