Question

question 11
2 pts
in which of the following depositional environments would you expect a deposit of siltstones containing layered paleosols and fossil evidence of freshwater snails, rabbits, and three - toed horses?
marsh or delta
evaporitic lake
alpine environment
river floodplain
question 12
2 pts
the largest earthquakes occur at which of the following plate boundaries?
continental - continental convergent
divergent
transform
continental - oceanic convergent

Explanation:

For Question 11: River floodplains can have siltstone deposits with paleosols and fossils of freshwater and terrestrial - like animals. Marsh or delta may not have all these features together. Evaporitic lakes are dominated by evaporite - related processes and won't host such a diverse set of fossils. Alpine environments are not typical for such sediment - fossil combinations.
For Question 12: The largest earthquakes occur at subduction zones, which are continental - oceanic convergent boundaries. At continental - continental convergent boundaries, the rocks are more buoyant and the earthquakes are generally not as large as at subduction zones. Divergent boundaries have mostly smaller - scale seismic activity related to magma intrusion. Transform boundaries have significant seismic activity but not as large as the subduction - related ones in terms of the largest events.

Answer:

Question 11: River floodplain
Question 12: Continental - Oceanic convergent