Determination of the age of fossil, Biology

Assignment Help:

DETERMINATION OF THE AGE OF FOSSIL -

Radioactive clock (Boltwood-1907) - Half life of uranium is 4.5 billion years.
This means half of total uranium disintegrates into lead in 4.5 billion years 235u decays to 206pb. By calculating the amount of lead in a rock, one can approximately estimate the age of fossil.
Radio carbon method - (W.E Libby - 1950).
Potassium argon method - Potassium is a common element found in al rocks.

Related Discussions:- Determination of the age of fossil

How oak trees affect lyme disease in humans, How does the production of aco...

How does the production of acorns by oak trees affect Lyme disease in humans? When more acorns are produced by oak trees the populations of mice and deer that eat acorns enhan

Controlled percussive instruments, Percussive instruments -this method...

Percussive instruments -this method used a selected and controlled percussive removal force -Instruments delivers an impact either directly to a restorative or indirectly t

Poly-functional enzymes, Bi-and Poly-Functional Enzymes These enzymes a...

Bi-and Poly-Functional Enzymes These enzymes are generated by genes obtained by fusion of the coding regions of two or more genes encoding various enzymes. In simple words, the

Examination of the prosthesis, Examination of the Prosthesis It is impo...

Examination of the Prosthesis It is important to examine the prosthesis thoroughly. This involves assessing mobility, checking screws, evaluating attachments and porcelain res

Define the ltlt pasteurization method, Define the LTLT Pasteurization Metho...

Define the LTLT Pasteurization Method? In LTLT pasteurization, the pasteurization time is in the order of minutes and related to the temperature used; two typical temperature/t

Scentific american article suggests some improvements, The human skeleton h...

The human skeleton has evolved from that of four-legged animals. Unfortunately, the adaptation is far from perfect; thus, our upright posture causes problems like backage and the k

Apex locator in retreatment cases-endodontics principles, Apex locator in r...

Apex locator in retreatment cases: - Electronic apex locators may give misread for working length when gutta-percha is initially being removed. - Due to that file beging

Compare and contrast covalent and ionic bonds, Compare and contrast covalen...

Compare and contrast covalent and ionic bonds in molecules, give an example of each.

Important sintist name and ther inventions in botanet, Assainment

Assainment

Describe inflammation and atherosclerosis, Describe Inflammation and Athero...

Describe Inflammation and Atherosclerosis ? It has recently been stated that atherosclerosis is clearly an inflammatory disease and does not result simply from the accumulatio

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages