List of top Geology Questions on Geochronology

One mole of a parent nuclide is undergoing radioactive decay. The fraction of atoms of this nuclide that has decayed after three half-lives is.................

In the \(^{87}Rb-^{87}Sr\) isotopic systematics applied to terrestrial rocks, the slope of the isochron \( (e^{\lambda t} - 1) \) can be approximated as \( \lambda t \), where \( \lambda \) is the decay constant and \( t \) is time. Choose the correct option that justifies this approximation.

Choose the material on which \(^{14}C\) dating technique can be correctly applied.

The correct sequence from larger to smaller chronostratigraphic units is:
A. Stage,
B. Series,
C. Zone,
D. System. Choose the correct answer from the options given below:

Arrange the following in older to younger order of their stratigraphic position:
A. Otoceras zone,
B. Megalodon limestone,
C. Daonella Limestone,
D. Monotis shale, E. Hedenstroemia be
D. Choose the correct answer from the options given below:

Given below are two statements:
Assertion (A): Chronostratigraphy is concerned with the mutual time relationship of strat
A.
Reason (R): Formation, member and bed are units of chronostratigraphy.