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Index
»
Environmental Geology
»
Chapter 1
»
Level 1
level: Level 1
Questions and Answers List
level questions: Level 1
Question
Answer
Mineral containing silicon & oxygen and usually one or more additional elements
Silicate
A rock formed or crystallized from a magma
Igneous
Parallel alignment of linear or platy minerals in a rock
Foliation
Rock with a regular order of atoms
Crystalline
Describes an igneous rock crystallized well below the earth’s surface; typically, coarse- grained
Plutonic
matter that has been deposited by some natural process
Sediment
mineral consisting of a single chemical element
native elements
rock that in its molten form (as magma) issues from volcanos; lava is what magma is called when it reaches the surface
Lava
molten rock in the earth's crust
Magma
subduction zone or continental collision zone
Convergent plate boundary
A convergent plate boundary at oceanic lithosphere is being pushed beneath another plate into the asthenosphere
Subduction zone
seafloor spreading ridges and continental rift zones
Divergent plate boundary
underwater mountain range, Magma spreading sea floor crating bands of normally & reversed Magnetic polarity
mid-ocean ridge
A fault between offset segments of a spreading ridge, along which 2 plates move horizontally in opposite directions (San Andreas Fault)
Transform fault
A fault with predominantly when plate horizontal displacement
Strike-slip fault
Chain of volcanic islands formed parallel to a subduction zone
Island arc
The solid, outermost zone of the earth, including the crust & a portion of the upper mantle
Lithosphere
Elements - Mineral - Rock
elements
Size, Distance to Sun, Nearby presence to Jupiter
Earth hospitality
exponential growth rate
7.8 Billion people on earth
118 elements Chemical Symbol
periodic table
Same Number on Periodic Chart
Atoms and Protons
Naturally occurring, inorganic solids composed of 1 ot more chemical elements bonded together
Minerals are:
Si & O silicon and Oxygen
2 most common elements
Newly discovered & Highly radioactive
Elements < 92
1) Chemical composition & 2) Crystal Structure
2 Fundamental Characteristics of any mineral
Hardness, color, cleavage, fizzing w/ acid, streak, density
Properties to identify most minerals
Silicates
Largest General Group of minerals
Igneous, Sedimentary, Metamorphic
3 Main types of Rock
Fast cooling - Volcanic
Fine Igneous Rock
Slow cooling - Plutonic
Coarse Igneous Rock
Clastic , Chemical , Organic
Sedimentary rocks formed from
formed by heat and/or pressure
Metamorphic rock
Foliated and Non-foliated
2 Categories of Metamorphic Rock
1 or 2 letter code for an element
Chemical Symbols
6th
AZ size rank in US
16th
AZ population rank in US
Colorado River doesn't flow straight
AZ Border is not straight - why?
Basin & Range , Central Mtn Region, CO Plateau
3 Subdivisions of AZ
Boundary between Central Mtn Zone & CO Plateau
Mogollon Rim
Verde River
River 30 miles North of Prescott
Palo Verde is West of Phx
AZ Nuclear power plant
Salt, Little CO, Colorado, Verde, Gila, Bill Williams
6 Rivers in AZ
Cattle, Citrus, Cotton, Copper, Climate
5 C's of AZ State Seal
Federal or State Land / Public
Majority of AZ Land
40 miles NW of center of AZ
Prescott Location
3 Seismic Stations & where the circles cross = Epicenter
EQ Triangulation
Plate Boundary Subduction release / Faults
What causes EQs
Mercalli, Richter, Moment
EQ Size Scales
1- 12 Roman Numeral & Felt Reports
mercalli scale
Convergent
Plate boundary that has truly Large EQ
Body - P & S , Surface
Seismic Waves
Travel greater distances thru the earth's interior
Body Waves
HIllsides, Fires, Tsunamis
EQ Hazards
Location of next EQs
Seismic Gaps
Cascadia & Hayward
Next 2 most common US EQs
Foreschocks, Groundwater levels in wells, & Animal behavior
EQ Predictions?