CofC - Geology 105 (2019, Carew) - PEO 2
QUESTIONS AND ANSWERS
1. "Dropstones" observed in deep marine sediments are proof of what type of conditions in
the course of its formation? - ANSWER-ice bergs/glaciers were fashioned
2. three developments of limestone depositional surroundings - ANSWER-1) Shallow
marine
2) Warm, clean water
3) No terrigenous sediment enter
3. four methods wherein plate tectonics has affected the records of lifestyles on Earth? -
ANSWER-1) Continental rifting (break up biota apart to evolve independently)
2) Sea level rise and fall
3) Continent migrations throughout latitudes (climate change)
4)Episodes of ice sheets vs. No ice
4. A pink mudstone probable consists of _________________ and turned into deposited in
_____________ situations. - ANSWER-organics and/or iron --> oxidizing situations
5. An boom within the C13/C12 ratio in sea-backside sediment suggests what? -
ANSWER-Increased primary manufacturers in the pelagic meals net
6. Arid surroundings + close to a granite mountain range composed of granite = what type
of rock? - ANSWER-Arkose
7. Deposit fashioned with the aid of a turbidity present day flowing down a continental
sluggish onto the deep sea floor indicates what sort of bedding? - ANSWER-graded
bedding
8. Example of a layer of rock that represents the identical short c programming language of
time anywhere? - ANSWER-a volcanic ash layer
9. Half lifestyles of C14? - ANSWER-5730 years
10.If a crystal in an igneous rock is observed to have 950 atoms of a radioactive figure
isotope, and 2850 atoms of its strong daughter isotope, how vintage is the crystal? -
ANSWER-1 1/2-existence
11.Largest reservoir of carbon on Earth? - ANSWER-limestones
12.Radiometric (isotopic) age determinations are valid most effective if
__________________. - ANSWER-the sample has remained a closed device
13.Sedimentary deposit fashioned in the middle of a huge deep lake is probably to show
what form of bedding? - ANSWER-laminar bedding
14.Sedimentary deposit with a rippled floor shows what time of bedding? - ANSWER-pass
bedding
15.Sudden launch of a massive quantity of methane hydrate (CH4) would go away what
time of proof within the rock document? - ANSWER-Sudden decrease within the
C13/C12 ratio in fossil shells
QUESTIONS AND ANSWERS
1. "Dropstones" observed in deep marine sediments are proof of what type of conditions in
the course of its formation? - ANSWER-ice bergs/glaciers were fashioned
2. three developments of limestone depositional surroundings - ANSWER-1) Shallow
marine
2) Warm, clean water
3) No terrigenous sediment enter
3. four methods wherein plate tectonics has affected the records of lifestyles on Earth? -
ANSWER-1) Continental rifting (break up biota apart to evolve independently)
2) Sea level rise and fall
3) Continent migrations throughout latitudes (climate change)
4)Episodes of ice sheets vs. No ice
4. A pink mudstone probable consists of _________________ and turned into deposited in
_____________ situations. - ANSWER-organics and/or iron --> oxidizing situations
5. An boom within the C13/C12 ratio in sea-backside sediment suggests what? -
ANSWER-Increased primary manufacturers in the pelagic meals net
6. Arid surroundings + close to a granite mountain range composed of granite = what type
of rock? - ANSWER-Arkose
7. Deposit fashioned with the aid of a turbidity present day flowing down a continental
sluggish onto the deep sea floor indicates what sort of bedding? - ANSWER-graded
bedding
8. Example of a layer of rock that represents the identical short c programming language of
time anywhere? - ANSWER-a volcanic ash layer
9. Half lifestyles of C14? - ANSWER-5730 years
10.If a crystal in an igneous rock is observed to have 950 atoms of a radioactive figure
isotope, and 2850 atoms of its strong daughter isotope, how vintage is the crystal? -
ANSWER-1 1/2-existence
11.Largest reservoir of carbon on Earth? - ANSWER-limestones
12.Radiometric (isotopic) age determinations are valid most effective if
__________________. - ANSWER-the sample has remained a closed device
13.Sedimentary deposit fashioned in the middle of a huge deep lake is probably to show
what form of bedding? - ANSWER-laminar bedding
14.Sedimentary deposit with a rippled floor shows what time of bedding? - ANSWER-pass
bedding
15.Sudden launch of a massive quantity of methane hydrate (CH4) would go away what
time of proof within the rock document? - ANSWER-Sudden decrease within the
C13/C12 ratio in fossil shells
