Asked by Carla Marie on Jul 16, 2024
Verified
Which of the following is a good interpretation of the environmental significance of an attribute of a sedimentary rock?
A) Fossils indicate that sediment was deposited on land.
B) Large cross beds in well-sorted sandstone usually indicate deposition by wind.
C) Mudcracks are formed in deep-water environments where sand and mud can be deposited in thin layers.
D) Large, angular, poorly sorted clasts reflect a large amount of transport.
E) None of these.
Mudcracks
Patterns of cracks formed by the drying of mud, indicative of alternating wet and dry conditions, found in both modern and ancient sediments.
Cross Beds
Layers of rock that are inclined relative to the horizontal surface, typically formed by wind or water currents.
Fossils
The preserved remains, impressions, or traces of once-living organisms from a past geological age, embedded and preserved in sedimentary rocks.
- Determine the environmental relevance of characteristics maintained in sedimentary rocks.
- Clarify the distinctions among the environments of deposition for different sedimentary rock types.
Verified Answer
MS
Malia SorceJul 18, 2024
Final Answer :
B
Explanation :
Large cross beds in well-sorted sandstone are characteristic of aeolian (wind-blown) deposits, such as those found in desert dunes, indicating the sediment was transported and deposited by wind.
Learning Objectives
- Determine the environmental relevance of characteristics maintained in sedimentary rocks.
- Clarify the distinctions among the environments of deposition for different sedimentary rock types.