Fig. 3From: Petrography of Middle Jurassic to Early Cretaceous sandstones in the Kutch Basin, western India: Implications on provenance and basin evolutionTriangular QFL plot showing compositions of sandstones in Jhumara, Jhuran and Bhuj Formations, respectively. Q = Total quartzose grains, including monocrystalline (Qm) and polycrystalline (Qp) varieties; F = Total feldspar grains; RF = Total unstable rock fragments. Field boundaries are taken from Folk’s classification of sandstones (Folk 1974)Back to article page