Carbon dating quotes
The study of geology grew out of field studies associated with mining and engineering during the sixteenth to nineteenth centuries.
In these early studies the order of sedimentary rocks and structures were used to date geologic time periods and events in a relative way.
There were indeed powerful and unknown sources of energy fueling the Sun’s energy output.
The same is true of the basis of Kelvin’s estimate of the age of the Earth.
These two independent and agreeing dating methods for of the age of two primary members of the solar system formed a strong case for the correctness of his answer within the scientific community.
At first, the use of “key” diagnostic fossils was used to compare different areas of the geologic column.
Although there were attempts to make relative age estimates, no direct dating method was available until the twentieth century.
In his study Rutherford measured the U and He (He is an intermediate decay product of U) contents of uranium-bearing minerals to calculate an age.
One year later Boltwood (1907) developed the chemical U-Pb method.