Sedimentology of Miranjani Algal Limestone Member, Nathiagali

Abstract

Microscopic sedimentological study of the Miranjani Algal Limestone Member of the Hazara Formation (Hazara State) of Nathiagali area, District Hazara, is made, following the petrographic classification of limestone of Folk (1959).
Varied association of all three basic constituents of limestones (allochems, microcrystalline calcite and sparry calcite) is met with indicating a diversity of physiochemical conditions.

Mega and microscopic sedimentary structures and composition are used to infer environments of deposition for every thin section and for the unit, as a whole.
Systematics of algal material is not dealt with except for identifying it as "Grun Stromatolytic Algae". Ostracodes were met within a thin section which, howeever, could not be identified.