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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 because it is a distinctive layer that is widespread and easily recognizable in the rock record. Key beds are used as markers for correlating and dating rock layers in different locations, and the distinct composition and boundaries of a coal seam make it a useful reference point for stratigraphic analysis and interpreting geological history.


What do geologists call a single layer of sedimentary rock?

A single layer of sedimentary rock is called a "bed." Beds can vary in thickness and can be identified based on their distinct characteristics such as composition and sedimentary structures.