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As Holmes, writing in Nature in 1913, put it: "the geologist who ten years ago was embarrassed by the shortness of time allowed to him for the evolution of the Earth's crust, is still more embarrassed with the superabundance with which he is now confronted." It continued to be hotly debated for decades.
Cherry Lewis commented, "In the 1920s, as the age of the Earth crept up towards 3 billion years, this took it beyond the age of the Universe, then calculated to be only 1.8 billion years old.
Credit: Geoffrey Notkin, Aerolite Meteorites of Tucson Geoking42 at en.wikipedia (CC BY-SA 2.5 [https://creativecommons.org/licenses/by-sa/2.5]), via Wikimedia Commons Humans have wondered about the age of Earth for centuries.
In the 1600s, a bishop worked backwards through generations of “begats” in the Bible to come to a very specific date for Creation: October 26, 4004 BC. In the 1700s, scientists developed their own theories.
Before radiometric dating there was no way of knowing.
In certain situations, before radiometric dating, there was no way of knowing.
The catastrophic blast took the lives of 71 American sailors.
Canyon Diablo meteorites include many fragments of the asteroid that created Barringer Crater (Meteor Crater), Arizona, United States.
In 1928 Arthur Holmes showed how convection currents in the substratum (now called the mantle) underlying the continents could be this mechanism.By studying these, and meteorites that landed on Earth from within our solar system, we’ve arrived at an age for Earth of 4.55 billion years. Age of the Earth | USGS Dear Science: How Do We Know How Old the Earth Is? | Live Science Where Are the Oldest Rocks on Earth Found?