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Mars Rover Curiosity Data Analysis

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Questions and Answers

What type of grains were primarily found in the Murray Formation sediment by Rivera-Hernández et al.?

Silt grains
Mixed grains
Fine grains (correct)
Coarse grains

What conclusion did Rivera-Hernández et al. draw about the coarse grains found in the Murray Formation?

They are sandstone deposited by flowing water. (correct)
They are indicative of volcanic activity.
They represent sediment from glacial movements.
They are a result of wind erosion.

What characteristics did the fine grains exhibit in the Murray Formation sediment?

Signs of cracking due to episodic desiccation. (correct)
Evidence of rapid volcanic deposition.
Inclusion of large mineral fragments.
Presence of fossilized microorganisms.

What does the description of the sedimentary environment in the Murray Formation imply about the past conditions there?

<p>There were periods of both water flow and drying. (D)</p> Signup and view all the answers

Which scenario regarding the water presence in the Murray Formation is most supported by the sediment analysis?

<p>The environment alternated between lakes and streams for prolonged periods. (C)</p> Signup and view all the answers

Flashcards

Murray Formation Sediment

Sediment found in the Gale Crater's Murray Formation, showing evidence of past hydrological deposition including different grain sizes and desiccation.

Coarse Grains

Larger particles of sediment, often sandstone, deposited by flowing water.

Fine Grains

Smaller particles of sediment, often mudstone, deposited by settling in low-flow water.

Desiccation

The process of drying out, evident in the cracked fine grains.

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Logical Completion of Text

The choice that best explains the combination of coarse and fine grains in the Murray Formation, relating to water sources and their behavior over time in order to match with the observation of the alternating desiccation and periods of water activity.

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Study Notes

Data from Mars Rover Curiosity

Data suggests hydrological deposition of sediment in the distant past at Gale Crater's Murray Formation
Analysis of grain size from Murray Formation sediment shows fine grains, with some coarse grains indicative of episodic drying
Coarse grains likely sandstone (deposited by flowing water)
Fine grains likely mudstone (deposited by slow-moving water/low flow)

Completing the Text

Correct answer: A lake existed at the Murray Formation for a prolonged period, but there were periods with intermittent drying and streams

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