Geologic Time and Maps
Double Jeopardy: Break in the geologic record due to erosion, lack of deposition, or both.
What is an unconformity?
Arch shaped folding that sometimes holds oil and gas reservoirs.
What is an anticline?
An underground water bearing rock or structure.
What is an aquifer?
Double Jeopardy:
Arid areas with usually 10" of rain or less.
By this definition, Tucson is a true desert.
What are deserts?
What is incorrect?
Mineral resources originating from organic material, that create heat and energy.
What are fossil fuels?
Comparative ages of rocks, based on geologic principles.
What is relative dating?
Sets of fractures in rocks that sometimes erode into boulder stacks.
What are joints?
Drawdown of water table due to well pumping.
What is cone of depression?
A moving mass of ice formed from recrystallization of snow.
What is a glacier?
Double Jeopardy:
1. The four types of materials and/or rocks in the sequential formation of high-grade coal.
2. The highest grade of coal, actually a metamorphic rock.
1. What is peat, lignite, bituminous coal and anthracite?
2. What is anthracite?
The principle that states that in a sequence of horizontal rocks, the rocks on the top will be the youngest.
What is the Principle of Superposition?
Faulting where one side of the fault moves down the slope of the fault.
What is a normal fault?
The amount of water moving past a given point within a given amount of time.
What is discharge?
Double Jeopardy:
1. A structure formed from the release of stream sediments where a canyon opens unto the flank of a mountain.
2. A serious of #1 joined together, as with the Tucson Foothills.
1. What is an alluvial fan?
2. What is a bajada?
A mineral resource that can be mined at a profit.
What is ore.
The decay of elements or their isotopes into other elements or isotopes.
What is radioactive/radiometric dating?
The line formed from an imaginary horizontal plane intersecting a flat rock surface, and the direction in which water moves down slope on a rock surface.
What is strike and dip?
The Tucson Airport Remediation Project is primarily concerned with clean-up of contamination in _____________________________
What is groundwater?
An area of flat, dried-up land, especially a closed desert basin from which water evaporates and forms salts
What is a playa?
One of the five Cs of Arizona's economy, the others being cotton, citrus, cattle and climate
What is copper?
Metamorphic and igneous rocks that are the oldest rocks in the Grand Canyon.
What is the Vishnu Group?
The geologic province in Arizona known for successive horsts and grabens caused from crustal extension.
What is the Basin and Range Province?
CAP is the acronym for this project, which brings in water from the Colorado River to parts of Arizona, California, Nevada and Utah.
What is the Central Arizona Project?
The ocean process that moves water and sediments along the coast parallel to the shoreline.
What is longshore drift?
Double Jeopardy:
1. Loose gold in stream alluvium?
2. Gemstones are often found in this coarsely crystalline intrusive rock
1. What is placer gold?
2. What is pegmatite?