Source provenance
Butt, A.A. (1972). Problems of stratigraphic nomenclature in the Hazara District, N.W.F.P., Pakistan. Geological Bulletin of the Punjab University, 9, 65-70.
Peer-reviewed Full text read 1972
Cited by 2 units (2 published) · 0 field-level citations · 2 revision notes.
Recommends Hazara Formation, Abbottabad Formation and Kihal Formation (vs Latif 1970's Hazara/Abbottabad Groups). Hazara Formation = flyschoid turbidite (argillites, silty shales, subgreywackes, algal limestones), type at Baragali. Abbottabad Formation = one cyclical rhythm of five members: Tanakki (basal conglomerate), Sangargali (shale-sandstone), Mahmdagali (dolomite), Mirpur (shale-sandstone), Sirban (upper dolomite ~1600 ft).
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Units citing this source
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- Lithology: Butt (1972) treated the Abbottabad Formation (replacing the old 'Infra-Trias') as a single cyclical sedimentary rhythm - rejecting Latif's (1970) Kakul/Sirban two-formation split - divided into five members: Tanakki (basal conglomerate), Sangargali (lower shale and sandstone), Mahmdagali (lower dolomite), Mirpur (upper shale and sandstone) and Sirban (upper dolomite, ~1600 ft).
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- Geological significance: Butt (1972) formalized the Hazara Formation (replacing the 'Slate Series' of Middlemiss 1896 and 'Hazara Slate Formation' of Marks & Ali 1961) and rejected Latif's (1970) fivefold 'Hazara Group' split, since the siliciclastic units lack distinct lithological boundaries; it is a thick flyschoid turbiditic succession of argillites, silty shales and subgreywackes with intercalated algal limestones, with type exposures at Baragali.