Lecture 9
Lecture 9
Lecture 10
Lecture 10
Lecture 10
100
Element with the same number of protons but a different number of neutrons
What is an isotope
100
It is not easy to obtain absolute ages from _________ rocks
What is sedimentary
100
A _____ is the angle of inclination of the surface of a rock unit or fault measured from a horizontal plane
What is a dip
100
This type of deformation causes materials to crack and break
What is Brittle
100
___________ are upfolded into arches
What is anticlines
200
The stable isotopes formed from the decay of a parent isotope
What are daughter products
200
This type of decay results from the loss of 2 protons and 2 neutrons from the nucleus of an atom
What is alpha decay
200
Force applied to a given area
What is stress
200
Changes in the shape or size of a rock unit caused by stress
What is strain
200
An anticlinal structure in which the oldest rocks are in the center
What is a Dome
300
This isotope is used to date very young samples
What is Carbon-14
300
Radiometric Dating is a type of _________ dating used to determine the actual number of years since a rock was formed
What is absolute
300
This type of deformation is similar to squashing a ball of dough
What is ductile
300
A rock surface above the fault is defined as a _______ wall
What is hanging
300
This type of rock fracture has no appreciable movement across cracks
What is joint
400
Uranium (U) and Lead (Pb) are useful in dating _______ which are minerals high in U and low in Pb
What is Zircon
400
The ______ era consists of the Quarternary and Tertiary periods
What is Cenozoic
400
Defined as the general term for all changes in the original form or size of a rock unit
What is deformation
400
Ductile deformation is favored over brittle deformation in _______ temps.
What is warmer
400
Results when the rock surface is below the fault
What is a Footwall
500
If an element has a half life of 10,000 years it's fourth life is how many years?
What is 20,000 years
500
The paleozoic, mesozoic, and cenozoic eras all make up what eon?
What is phanerozoic
500
This type of fault results when the movement is mainly parallel to the dip of the fault surface
What is Dip-Slip fault
500
_______ faults accommodate lengthening or extension of crust
What is normal
500
Low confining pressure results in _________ deformation
What is brittle
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