Outcall: pre-bookings only! no short notice available!
You must be logged in to view this content. Please click the button below to log in.Login
Isotopes of lead
The Pb method is used to determine the accumulation rate of sediments in lakes, oceans and other water bodies. In a typical application, the average accumulation rate over a period of - years is obtained. From the accumulation rate, the age of sediment from a particular depth in the sediment column can be estimated. Pb is a naturally occurring radioactive element that is part of the uranium radioactive decay series. The radioactive element uranium has an almost infinite half-life 4. Although the concentration of uranium varies from location to location, it is present in essentially all soils and sediments, at least at some low level.
Lead is entirely a primordial nuclide and is not a radiogenic nuclide. The three isotopes lead, lead, and lead represent the ends of three decay chains : the uranium series or radium series , the actinium series , and the thorium series , respectively; a fourth decay chain, the neptunium series , terminates with the thallium isotope Tl. The three series terminating in lead represent the decay chain products of long-lived primordial U , U , and Th , respectively.