Review of Stratigraphy of the Upper Hunza Valley (UHV), NW Karakoram, Pakistan
Abstract
Recent collaborative work of Pakistani and Chinese scientists has established five mapable stratigraphic units which, from old to young, are: i. Gircha Fm., ii. Pak-China Friendship Fm (Dih Fm.)., iii. Passu Slate, iv. Gujal Dolomite, and v. Shanoz Conglomerate. A NNW-SSE trending Sost Anticline is the major structure in this area which bifurcates the stratigraphic net of this valley. The oldest formation exposed in the core of Sost Anticline is Gircha Fm. The base of the Gircha Fm is not exposed in UHV. The age of stratigraphic sequence in the UHV, based on fauna, ranges from Late Permian to Late Cretaceous-Early Tertiary.
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