Paleontology dating fossils fla keys singles dating search

21-Jun-2017 20:02

Much of the Earth's geology consists of successional layers of different rock types, piled one on top of another.The most common rocks observed in this form are sedimentary rocks (derived from what were formerly sediments), and extrusive igneous rocks (e.g., lavas, volcanic ash, and other formerly molten rocks extruded onto the Earth's surface).The example used here contrasts sharply with the way conventional scientific dating methods are characterized by some critics (for example, refer to discussion in "Common Creationist Criticisms of Mainstream Dating Methods" in the Age of the Earth FAQ and Isochron Dating FAQ).A common form of criticism is to cite geologically complicated situations where the application of radiometric dating is very challenging.They are the "initial working hypotheses" to be tested further by data.Using these principles, it is possible to construct an interpretation of the sequence of events for any geological situation, even on other planets (e.g., a crater impact can cut into an older, pre-existing surface, or craters may overlap, revealing their relative ages).As an example of how they are used, radiometric dates from geologically simple, fossiliferous Cretaceous rocks in western North America are compared to the geological time scale.To get to that point, there is also a historical discussion and description of non-radiometric dating methods.

For example, wave ripples have their pointed crests on the "up" side, and more rounded troughs on the "down" side.

They are applied by geologists in the same sense that a "null hypothesis" is in statistics -- not necessarily correct, just testable.

In the last 200 or more years of their application, they are valid, but geologists do not assume they are.

It can't float in mid-air, particularly if the material involved is sand, mud, or molten rock.

The principle of superposition therefore has a clear implication for the age of a vertical succession of strata.

For example, wave ripples have their pointed crests on the "up" side, and more rounded troughs on the "down" side.They are applied by geologists in the same sense that a "null hypothesis" is in statistics -- not necessarily correct, just testable.In the last 200 or more years of their application, they are valid, but geologists do not assume they are.It can't float in mid-air, particularly if the material involved is sand, mud, or molten rock.The principle of superposition therefore has a clear implication for the age of a vertical succession of strata.This document is partly based on a prior posting composed in reply to Ted Holden.