Tectonics
Two types of crust
Continental and Oceanic
What property is least helpful in naming a mineral
color
How do igneous rocks form?
cooling and solidification of lava and magma
How do sedimentary rocks form?
Compaction and cementation
How do metamorphic rocks form?
Heat and pressure
3 types of plate boundaries
convergent, divergent, transform
How do you determine the hardness of a mineral?
scratches glass = harder than 5.5
What is the difference between intrusive and extrusive
Intrusive cool slowly and have large crystals.
Extrusive cool quickly and have small or no crystals.
In what environment do most sed. rocks form?
Marine/water
What other rock types can metamophic rocks turn into?
Igneous, sedimentary or another metamorphic rock
what forms at a divergent plate boundary
ridge or rift, volcanoes and earthquakes
What is the difference between cleavage and fracture?
cleavage has flat/smooth surfaces, fracture is rough/random
name two felsic minerals
quarts, potassium feldspar, muscovite, Sa rich felspar
How do sediments form?
Weathering and erosion
what forms at a convergent plate boundary
Mountains, volcanoes, earthquakes, trenches
What is special about calcite
reacts with acid, doubles light that passes through it
In diorite, which mineral will melt first and why?
Quartz, has the lowest melting point.
In bowen's reaction series, what forms after pyroxene?
Amphibole
What type of plate boundary cause earthquakes in California?
transform
What is the hardest mineral?
Diamond
Name the four composition types.
Felsic, intermediate, mafic and ultra-mafic.
In bowen's reaction series, at what temp does Quartz form?
650 degrees