Volcano of classifying magmatic volcanoes is by their frequency of eruption, with those that erupt regularly called active, those that have erupted in historical times but are now quiet called dormant or inactive, and those that have not erupted in historical times called extinct. However, these popular classifications—extinct in particular—are practically meaningless to scientists. They use classifications which refer to a particular volcano's formative and eruptive processes and resulting shapes. There is no consensus among volcanologists on how to define an "active" volcano. The lifespan of a volcano can vary from months to several million years, making such a distinction sometimes
Extinct Kannada literature Extinct Kannada literature Extinct Kannada literature is a body of literature of the Kannada language dating from the period preceding the first extant work, "Kavirajamarga" (ca. 850 CE). Although no works of this period are available now, references to them are found in the Kavirajamarga and a handful of other extant works. While a few scholars may have expressed reservations regarding the extent of this literature, noted modern scholars such as A.K. Ramanujan, K.A. Nilakanta Sastri, R. S. Mugali, and A. K. Warder, to name a few, have hypothesized that a body of literature must have existed in an earlier