Sedimentary Structures Sedimentary structures allow geologists to resolve the hi

Question

Sedimentary Structures

Sedimentary structures allow geologists to resolve the history of an area when rocks have been deformed. For example, mudcrack "V"s open toward younger strata, and the shape of ripple marks can also be used to determine which side of a layer is the upper one. Here, the youngest layer is in the center of the fold. VVV Mud cracks Graded bedding What about the picture below? Where is the youngest, where the oldest layer located? Describe how you came up with your answer. Mudstone Mud cracks Current ripples Sandstone

Explanation / Answer

In the given picture, the oldest layer is that of the Conglomerate followed by successively younger beds of limestone, mudstone, sandstone etc. Thus, the age of the beds decreases as we move from left to right which means the oldest layers are located at the extreme left top corner while the youngest layer os found at the extreme right bottom corner.

Reason : We can come to know about the relative ages of the different layers from:

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