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Outline the method for dating rocks and fossils

Mathematically, P = Po exp(-lambda T), where lambda = the decay constant and T = the period of decay. a zero initial number of D atoms, where P(or D) = the current number of P(or D) atoms, it follows that the age of a rock or mineral is computed as T=(1/lambda)ln(1 D/P).Using radiometric techniques, the oldest dated minerals (4.0 - 4.2 billion years) are zircon crystals found in sedimentary rocks in western Australia.Most people accept the current old-earth (OE) age estimate of around 4.6 billion years.This age is obtained from radiometric dating and is assumed by evolutionists to provide a sufficiently long time-frame for Darwinian evolution.But YE scientists point out some anomalies in relation to C-14 and a very old earth.

Astronomical cycles can also be used to measure relative age.The time required for half the original number of parent atoms to decay is called the half life.Some half-lives are listed below: It follows that uranium-lead, potassium-argon (K-Ar), and Rubidium-Strontium (Rb-Sr) decay can be used for very long time periods, whilst radiocarbon dating can only be used up to about 70,000 years. This uses a simple exponential decay formula linking the original number, Po, of parent atoms in rocks and minerals to the P atoms now present, thereby enabling an estimate of geological age.One problem with earth dating is that the original earth surface is assumed to have eroded long ago.But assuming the earth was formed at the time of the rest of our solar system, then recovered moon rock and meteorites can also be used to estimate the age of the earth.In fact, organic samples from every portion of the Phanerozoic record (spanning the last 500 million years on OE dating) show detectable amounts of C-14.The implication is that this organic material was either contaminated by new C-14, or it was buried much more recently and OE dating methods are suspect.These estimates give 4.4-4.5 billion years for moon rock, and 4.54 billion years for iron metreorites.These techniques utilize the physical parameters of the earth, such as ice cores, annual lake sediments, and astronomical cycles.And OE Christians (theistic evolutionists) see no problem with this dating whilst still accepting biblical creation, see Radiometric Dating - A Christian Perspective.This is the crucial point: it is claimed by some that an old earth supports evolutionary theory and by implication removes the need for biblical creation.

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  1. Working on the fossilised bones of a plant-eating sauropod dinosaur Jobaria sp. which in life was about 21 metres long. This dinosaur fossil was found in a region of the Sahara Desert in present day Niger, in western. Africa. Among topics covered in this chapter are fossils, their types, how they are dated and interpreted.

  2. Chapter Study Outline. 1. Fossils Memories of the Biological Past. a. What Are Fossils? i. Fossils are the remains of organisms chemically changed into rock. b. Taphonomy and. 1 These methods include amino acid dating, fission track dating, paleomagnetic dating, and electron spin resonance dating. v. All of these.

  3. Feb 9, 2018. The carbon-14 method was developed by the American physicist Willard F. Libby about 1946. It has proved to be a versatile technique of dating fossils and archaeological specimens from 500 to 50,000 years old. The method is widely used by Pleistocene geologists, anthropologists, archaeologists, and.

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