From the detailing the brand new matchmaking various rock devices, Nicolaus Steno in the 1669 revealed a couple basic geologic standards opublikowano Maj 13, 2022
The first stated that sedimentary stones is laid off into the an excellent horizontal trends, together with next stated that younger material equipment was indeed deposited on most readily useful off old stone devices. In order to think it latter idea think of the layers off color for the a wall surface. The eldest coating is wear basic in fact it is during the base, because latest level is at the top. An additional design try introduced of the James Hutton inside 1795, and soon after highlighted of the Charles Lyell in the early 1800s. This is the theory you to definitely absolute geologic techniques have been uniform in regularity and you can magnitude during the time, an idea referred to as „concept out of uniformitarianism.”
Exploration is off industrial focus given that at the least the occasions of your Romans, but it was not before 1500s and you will 1600s these particular operate produced a desire for regional rock relationships
Steno’s principles invited workers on the 1600s and you can very early 1700s so you’re able to beginning to recognize material successions. However, due to the fact stones was indeed locally revealed from the colour, structure, if you don’t smell, evaluations between rock sequences of various areas was commonly extremely hard. Fossils provided chances getting pros so you can correlate between geographically collection of components. So it contribution was you’ll since the fossils are located more than broad places of the World’s crust.
Origins out of good geologic time size The original people who called for to learn the latest geological dating of different stone tools had been miners
For the next biggest contribution with the geologic go out level we turn-to William Smith, good surveyor, canal builder, and you may novice geologist out of The united kingdomt. (więcej…)