20574D7A-60A7-45BB-86A9-E7384FF91BDB.jpeg - Bowen's recttion series Jolie Pena I chapter 3 x check w fig 2 28 Evidence for a younge-age fast woling of

20574D7A-60A7-45BB-86A9-E7384FF91BDB.jpeg - Bowen's...

This preview shows page 1 out of 1 page.

Image of page 1

Unformatted text preview: * Bowen's recttion series Jolie Pena I ( chapter 3 ) x- check w/ fig 2- 28 Evidence for a younge-age fast woling of granites Intrusive accedegneous rocks : minerals 21 millimeter Extrusive igneous rocks minerals are < I millimeter Classifying Isneous Rocks Texture (appearance ) pegmatitic - big ole crystals phoneritic - can see individual crystals porphyritic - both + aphonetic - minerals are too small to distinguish glassy - looks like glass vesicular - pyroclastic Composition - minerals inside the rock licates) mafic minerals - rich in iron and magnesium ; dark in color dense - filsur minerals - rich a in silicon and oxygen , less dense ; light in color. Compositional Groups's Felsit Intermediate Ultramafic If 85% or more If 55% to 85% of $1 15- 5 5%% of Alf 0- 15%% of minerals are I minerals are the minerals of the miner felsic , it goes in felsec, it goes in are felsies , it are felisic, thes category. this category goes in this goes in this Ex: granite Ex : Diorite category category ( 15% or less of (15- 45%% of Ex- yallw t Ex: Veridotit mafic ) matic ) basalt ( 285 % (45 - 85%% of mafic ) matic )...
View Full Document

  • Fall '10
  • JamesWilkerson

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern

Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes