Is a theory that rejects the idea that catastrophic forces were responsible for the current conditions on the Earth. The theory suggested instead, that continuing uniformity of existing processes were [..]

The geological principle formulated by James Hutton in 1795 and publicized by Charles Lyell in 1830 that geological processes occurring today have occurred similarly in the past, often articulated as, [..]

The principle that applies to geology our assumption that the laws of nature are constant As originally used it meant that the processes operating to change the Earth in the present also operated in the past and at the same rate and intensity and produced changes similar to those we see today. The meaning has evolved and today the principle of unif [..]

the well-substantiated hypothesis that the Earth and its organisms developed primarily from gradual processes and conditions rather than sudden Biblical Flood-style catastrophes.

Methodological assumptions that the laws of chemistry and physics have remained constant throughout the history of the earth, and that past geological events occurred by processes that can be observed today. Uniramia

(n) - the principle that the processes that acted on the Earth in the past continue to do so today

The assumption that the same natural processes acted in the past as are observed to operate now.

The principle that the same processes operate on and within the Earth today as in the past. Hence the present is considered the key to the past.

idea that geologic processes that occurred in the past can be explained by current geologic processes. (principle of uniformitarianism) universe -

The concept that the processes that have shaped the Earth through geologic time are the same as those observable today.

One side of a nineteenth-century geological argument about the forces that have shaped the earth; in this case, the notion was that, with the exception of volcanoes and earthquakes, the earth has been shaped by the slow, almost imperceptible working of natural processes which are still going on and can be measured. The issue is this: if the laws ar [..]

Uniformitarianism is the principle that we can infer long term trends from those we have observed over a short period. In its stronger sense it claims that processes operating in the present can accou [..]

Originally a concept in geology, the precept that the processes observable in the present can also be used to explain the past.

The proposition that natural processes that operated in the past are the same as in the present. (The term has usually implied gradual rather than catastrophic change.)

a principle that geologic processes that occurred in the past can be explained by current geologic processes

The doctrine that gradual geological agents of change have operated throughout the past; contrasted with catastrophism.

(chiefly,_|geology) The scientific principle that natural processes operated in the past in the same way and at the same rates that they operate today. from 19th c. * '''2004''', Richard Fortey, '' [..]