111-3 - GY 111 Lecture Notes D Haywick(2007-08 1 GY 111...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
GY 111 Lecture Notes D. Haywick (2007-08) 1 GY 111 Lecture Note Series Rocks and the Rock Cycle Lecture Goals: A) Types of Rocks B) Igneous Rocks C) Sedimentary Rocks D) Metamorphic Rocks E) The Rock Cycle Reference: Press et al. (2004), Chapter 4; Grotzinger et al. (2007) Chapter 3 A) Types of Rocks If we haven’t already done so, we will eventually be talking about the chemistry of minerals . By then, you will learn that minerals are naturally occurring, inorganic, crystalline solids with unique chemical compositions . We also need to define rocks . Rocks are naturally occurring solids containing more than one mineral . As it turns out, some times rocks will contain only one mineral. An example of this is a quartz sandstone. The only mineral it contains is quartz, but as many separate grains rather than a single crystal. So perhaps the definition of a rock needs to be refined just a bit: Rocks are naturally occurring solids containing one or more minerals . Geologists recognize three broad groups of rocks: 1) Igneous Rocks (literal translation: born from fire): These are rocks that were formed from originally molten states (see lava fountain, right) 2) Sedimentary Rocks : These are rocks that were formed initially through the accumulation of sediment (e.g., particles of old rock and minerals; see image of Mississippi Delta to right), or new minerals formed through the result of chemical precipitation or organic activity ). 3)
Background image of page 1

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

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 5

111-3 - GY 111 Lecture Notes D Haywick(2007-08 1 GY 111...

This preview shows document pages 1 - 2. Sign up to view the full document.

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