Geology 1b Spring 2003
Study Questions 2: Chapter 1 Wrap-up, Chapter 2 - All
End Intro to Plate Tectonics plus Minerals
- What are the three types of plate tectonic boundaries?
- What are the three types of convergent plate boundaries?
- Sketch a drawing of an Island Arc. Show the trench, subduction zone, accretionary wedge (Melange), Forearc basin, Arc of volcanoes, depth of melting in kilometers, ascending magmas, and Back-Arc basin.
- What is the Benioff Zone?
- What happens to the Benioff Zone as you move from the trench closer to the arc? What are general slope angles of the Benioff Zone?
- Sketch a drawing of a Magmatic Arc. Show Trench, subduction zone, accretionary wedge (Melange), Forearc basin, Arc of Volcanoes, depth of melting in kilometers, ascending magmas, Batholith, and Back-Arc basin.
- Sketch a Continent-Continent convergent margin. Show the ophiolite and suture zone.
- Define "chemical element". What are the eight most abundant elements in the Earth’s crust?
- Define atom, proton, neutron, electron, isotope, ion, cation, and anion.
- What is a molecule? What is a chemical compound? What is a complex ion? Give examples of each.
- What is ionic bonding and covalent bonding.
- What are the mineral names and chemical compositions of the chemical compounds sodium chloride, silica dioxide, and calcium carbonate.
- Plagioclase is a "solid solution", briefly discuss what that means using plagioclase as an example. (see page 36 in text – Ion Substitution).
- How do amorphous and crystalline materials differ? Is volcanic glass crystalline?
- What is a polymorph?
- Cleavage is characterized by three properties, what are they?
- How do cleavage and fracture differ? What is conchoidal fracture?
- On Mohs hardness scale, what is the hardness of your fingernail, a knife blade, and quartz.
- What are the two primary types of luster?
- See Table 2-1 on page 37 in text. What are the Major Mineral Groups, what are their chemical properties, and what are their rock-forming characteristics?