The boundary between these two different sedimentary layers is: 
A) sharp
B) gradational
C) weak
Correct Answer:
Verified
Q78: How does a cross bed form?
A) an
Q79: How does iron formation form?
A) evaporation of
Q80: How does chert form?
A) evaporation of water
Q81: These sandstone beds are interlayered with dark
Q82: The most likely cause of bedding in
Q84: Which environment is least likely to deposit
Q85: The most likely cause of graded bedding
Q86: The contact between the shale, which dominates
Q87: This sandstone includes small rounded pebbles and
Q88: Which environment is most likely to deposit
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