Flashcard Set Preview
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| 1 |
The average cutting of the Grand Canyon
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0.03mm
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| 2 |
The advance of the Tigris Euphrates Delta is
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a subtle geologic event
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| 3 |
In Amsterdam, sea level rise (20cm.c) is explained by
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subsidence of the land
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| 4 |
according to catastrophism what is true?
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1. the earth is 6000 years old 2. features of the earth resulted from violent and rapid...
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| 5 |
Most of East-central Canada is rising because of
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The deglaciation in North America
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| 6 |
Steno's principle of superposition indicates that
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the oldest stratum lies on the bottom with successively younger ones above
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| 7 |
in a succession of strata containing fossils, what is true?
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1. the lowest fossils are older than those occurring in overlaying strata 2. only index...
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| 8 |
Criteria defining a good index fossil are
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1. widespread 2. easily recognizable 3. short-lived
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| 9 |
What is used to describe the Lithology of a geologic formation?
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1. composition of mineral grains 2. color 3. textural properties
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| 10 |
transgressive facies patterns
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become finer upward
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| 11 |
regression can be caused by
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1. buildup of ice in the polar caps 2. localized uplift of the land in coastal areas
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| 12 |
nonconformity represents
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discontinuity surface separates between sedimentary layers and underlying metamorphic...
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| 13 |
the two elements most abundant in the earth's crust are
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silicon and oxygen
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| 14 |
which mineral property is the least reliable for identifying a mineral
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color
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| 15 |
annual growth rings are most reliably used for dating trees that are ________ years old
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5,000
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| 16 |
C^14 decay is useful only for dating the
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late pleistocene and holocene
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| 17 |
oldest known crustal rocks 3.96 B.Y. are found in
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NW Canada
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| 18 |
What is true of terrestrial planets?
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they have densities larger than 3gm.cm^3
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| 19 |
what is true of jovial planets?
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1. generally larger than terrestrial 2. consist of solid rocky core surrounded by thick atmosphere3....
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| 20 |
the Moho Discontinuity
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1. is a seismic anomaly 2. lies an avg. of 5km below the sea floors and 33km below continental...
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| 21 |
The earth's mantle is composed mainly of
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Granites
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| 22 |
Angular unconformity is
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Unconformity with angle of discordance between older and younger strata
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| 23 |
The transgressive facies pattern
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Reflects shrinkage of the land area
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| 24 |
Eustatic or sea level change results from
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1. fluctuating continental glaciations 2. large scale wrapping of deep ocean basin 3....
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| 25 |
Steno's principles
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1. superposition 2. original horizontality 3. original lateral continuity
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| 26 |
Original Horizontality
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when formed, most stratification is horizontal
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| 27 |
Original Lateral Continuity
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strata originally extended in all directions as far as the edges of their basin of deposition
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| 28 |
subsidence
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water is removed and ground lowers
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| 29 |
regression
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relative fall in sea level
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| 30 |
angular unconformity
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angle of discordance between older and younger strata
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| 31 |
disconformity
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discontinuity surface where there is no discordance between strata below and above ...
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| 32 |
fossil zone is the interval of strata that is characterized by
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a particular index fossil
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| 33 |
the concept of plutonism that was introduced by Hutton indicates
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the solid earth to be dynamic in which heat produces igneous and metamorphic rocks
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| 34 |
the oceanic crust is composed of
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basalt
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| 35 |
the earth's magnetic field results from
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the earth's core motion
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