List of top Geology Questions on Stratigraphy

A well-developed succession of laminated shale is bound by two volcanic ash beds that were precisely dated as shown in the schematic diagram given below. Assuming a constant sedimentation rate, the age of the fossiliferous limestone bed 65 m above the basal volcanic ash bed is ............ Ma. (Round off to nearest integer) 

Match the stratigraphic units in Group I with their corresponding basins in Group II.

Choose the CORRECT match between items in Group I with the items in Group II. 
Group I                      Group II 
P. Polarity zone           1. Biostratigraphy 
Q. Formation               2. Chronostratigraphy 
R. Biozone                   3. Magnetostratigraphy 
S. Epoch                      4. Lithostratigraphy 
 

Match the name of granitoid in Group I with the corresponding Craton in Group II. 
\[\begin{array}{|l|l|} \hline \textbf{Group I} & \textbf{Group II} \\ \hline \text{P. Closepet} & \text{1. Singhbum} \\ \hline \text{Q. Berach} & \text{2. Bastar} \\ \hline \text{R. Dongargarh} & \text{3. Dharwar} \\ \hline \text{S. Mayurbhanj} & \text{4. Aravalli} \\ \hline \end{array}\]