How is radiometric dating of fossils different from relative dating
The law of superposition is an axiom that forms one of the bases of the sciences of geology , archaeology , and other fields pertaining to geological stratigraphy. In its plainest form, it states that in undeformed stratigraphic sequences, the oldest strata will lie at the bottom of the sequence, while newer material stacks upon the surface to form new deposits over time. This is paramount to stratigraphic dating , which requires a set of assumptions, including that the law of superposition holds true and that an object cannot be older than the materials of which it is composed. These findings can inform the community on the fossil record covering the relevant strata, to determine which species coexisted temporally and which species existed successively in perhaps an evolutionarily or phylogenetically relevant way.
How is radiometric dating different from relative dating?
The history of paleontology traces the history of the effort to understand the history of life on Earth by studying the fossil record left behind by living organisms. Since it is concerned with understanding living organisms of the past, paleontology can be considered to be a field of biology, but its historical development has been closely tied to geology and the effort to understand the history of Earth itself. The ancient Chinese considered them to be dragon bones and documented them as such. The Chinese naturalist Shen Kuo — would propose a theory of climate change based on evidence from petrified bamboo. In early modern Europe , the systematic study of fossils emerged as an integral part of the changes in natural philosophy that occurred during the Age of Reason. The expanding knowledge of the fossil record also played an increasing role in the development of geology, and stratigraphy in particular. In , the word "paleontology" was used by the editor of a French scientific journal to refer to the study of ancient living organisms through fossils, and the first half of the 19th century saw geological and paleontological activity become increasingly well organized with the growth of geologic societies and museums and an increasing number of professional geologists and fossil specialists.