Igneous rocks are altered by physical and chemical

  • No School
  • AA 1
  • 4

This preview shows page 3 - 4 out of 4 pages.

Igneous rocks are altered by physical and chemical weathering into smaller components and transported and accumulated and compacted as layers and lithyphied down - Sedimentary rocks – fossils are sedimentary rocks. o 3 types; physical, chemical and organic, based on its composition. o Examples: conglomerates and agglomerates. o Limestone -chemical sedimentary rock
Image of page 3

Subscribe to view the full document.

- Metamorphic rock o If rocks from 2 groups heat at extreme temperatures they will be converted into a different rock. *Granite will be converted into Gneiss . The rock cycles - Processes where rocks can transition between the 3 rock types - Organic sedimentary rock: remnants of organic terms, form by lithification of plants and animals o E.g. Coal - Metamorphic rocks: marble, gneiss, quartz o Marble – through metamorphism of limestone o Quartz – through extreme heat of sandstone 2 important forces: - Constructive : building up land forms - Destructive : eliminating land forms Internal forces (volcanic activities or plate tectonic activities) are constructive forces External forces (wind, glacier, rivers, waves) are destructive forces Source of internal forces: chemical decay or nuclear elements Source of external forces: The Sun Geologic times – periods through which the Earth undergoes. -Precambrian: 600 million years ago. -Paleozoic: 225 m.y.a. -Mesozoic: 55 m.y.a. (present-like shapes) -Xenozoic: 10 m.y.a. (most of the landforms are formed) -Quaternary: 10 m.y.a.–ongoing *Pleistocene – ice age *Holocene – ongoing The pursuit of pattern – major landform assemblages od the world
Image of page 4
  • Fall '19

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 0 bonus questions You can ask 0 questions (0 expire soon) You can ask 0 questions (will expire )
Answers in as fast as 15 minutes