Biostratigraphy of Bangladesh

Biostratigraphy of Bangladesh

The Cenozoic succession of Bangladesh has been differentiated into a number of biostratigraphic units, viz., assemblage zone based on first assemblage demarcation (FAD) line, last assemblage demarcation (LAD) line, acme, and ranges of various marker palynotaxa in the...
Geological Time Scale

Geological Time Scale

What is the Geological Time Scale? The geological time scale is a system geologists use to subdivide the great span of time since the origin of the Earth. In other words, when the duration (time range) of the division in the geological column is given in terms of...