What are the 4 Principles of Geology?
The Principles of GeologyUniformitarianism.Original horizontality.Superposition.Cross-cutting relationships.Walthers Law.
What are the 4 laws of stratigraphy?
Stenos laws of stratigraphy describe the patterns in which rock layers are deposited. The four laws are the law of superposition, law of original horizontality, law of cross-cutting relationships, and law of lateral continuity.
What is the law of horizontality?
The LAW OF ORIGINAL HORIZONTALITY states that a series of sedimentary layers will generally be deposited in horizontal layers. You might think of this like snow falling one day when it is not windy, and it blanketing the ground. This law may be illustrated by the interpretation of footprints in a puddle of mud.
What is Huttons theory?
Hutton proposed that the Earth constantly cycled through disrepair and renewal. Exposed rocks and soil were eroded, and formed new sediments that were buried and turned into rock by heat and pressure. That rock eventually uplifted and eroded again, a cycle that continued uninterrupted.
Who is called the father of evolution?
Charles Darwin: Naturalist, Revolutionary, and Father of Evolution.
Following on the Law of Original Horizontality and Law of Superposition, both Hutton and Lyell recognized erosional boundaries preserved between rock layers that represent gaps in the geologic record. They named these gaps unconformities.
Put simply, an unconformity is a break in time in an otherwise continuous rock record. Unconformities are a type of geologic contact—a boundary between rocks—caused by a period of erosion or a pause in sediment accumulation, followed by the deposition of sediments anew.