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a bed rock is the bottom layer of the soil

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16y ago

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Why is bed rock called the parent of soil?

Bed rock is called the parent of soil because soil formation begins when bed rock is broken down by weathering . Weathering breaks the parent rock into smaller and smaller peices later on the weathered rock is broke down into soil particles. :-)


Which is older a dike or the rock layers the dike cuts across?

Dikes are always younger than the surrounding rock layers. The same holds true for any kind of intrusion. It will always be younger than anything that it is intruding into. To put it simply, you can't force an object into a bed of rock unless the bed of rock is already there.


How a coal seam might be used as a key bed?

A coal seam can be used as a key bed in stratigraphy by acting as a recognizable and widespread marker layer in the rock sequence. Key beds help correlate different rock layers in different locations based on the consistent presence of a specific marker bed, such as a coal seam, allowing geologists to establish the relative ages of rocks in various areas.


How does a coal seam might be used as a key bed?

A coal seam can be used as a key bed in geology to help determine the relative age of surrounding rock layers through the principle of superposition. Key beds are distinctive, widespread, and easily recognizable rock layers that can be correlated across different locations. By identifying a coal seam as a key bed, geologists can use it as a reference point to establish the relative ages of other rock layers in the area. This can help in understanding the geological history and sequence of events in a particular region.


What is the name of the bottom rock layer?

The bottom layer of a sedimentary rock is called the basal layer. This layer is considered the coarsest in the rock.