Because of the distortions and lies spread by fundamentalists about scientific dating there is a need for a centralized source of information on the topic.

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Many of these links also appear where appropriate below.

James Hutton and William Smith advanced the concept of geologic time and strengthened the belief in an ancient world.

See more information about "Strata" Smith and his original geologic map of England.

Information about Simon Winchester's delightful biography of Smith, The Map That Changed the World is available at Tree-Ring dating is based on the principle that the growth rings on certain species of trees reflect variations in seasonal and annual rainfall.

Dating is not necessary to demonstrate that evolution is a fact.

Chronological sequence is all that is really required.

Keyed to the relative time scale are examples of index fossils, the forms of life which existed during limited periods of geologic time and thus are used as guides to the age of the rocks in which they are preserved.

William "Strata" Smith, a civil engineer and surveyor, was well acquainted with areas in southern England where "limestone and shales are layered like slices of bread and butter." His hobby of collecting and cataloging fossil shells from these rocks led to the discovery that certain layers contained fossils unlike those in other layers.

Using these key or index fossils as markers, Smith could identify a particular layer of rock wherever it was exposed.