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A new occurrence of the Upper Permian Ammonoid Stacheoceras trimurti DIENER from the Himalayas; Himachal Pradesh, India


Bucher, Hugo; Nassichuck, Walter W; Spinosa, Claude (1997). A new occurrence of the Upper Permian Ammonoid Stacheoceras trimurti DIENER from the Himalayas; Himachal Pradesh, India. Eclogae Geologicae Helveticae, 90(3):599-604.

Abstract

The Dzhulfian vidrioceratid ammonoid Stacheoceras trimurti DIENER was found associated with the brachiopod Elivina tibetana (DIENER) in the Kuling Formation in the northwestern Himalayas in Himachal Pradesh province, India. It was recovered from a horizon of dark weathering phosphatic limestone nodules 2 m below the Permian Triassic boundary in the Lingti River valley near Chumik Marpo. The Triassic ammonoid Ophiceras sp. indet. was found a few metres above the base of the overlying Tamba Kurkur Formation, the transgressive base of which is correlated with the Otoceras bed of the Spiti area. The Permian-Triassic boundary is marked by a distinctive 10 cm thick red-weathering, iron oxide-rich layer at the top of the Kuling Formation. For this part of the Gondwana shelf, this horizon suggests erosion accompanied by weathering during latest Permian time (Dorashamian).

Abstract

The Dzhulfian vidrioceratid ammonoid Stacheoceras trimurti DIENER was found associated with the brachiopod Elivina tibetana (DIENER) in the Kuling Formation in the northwestern Himalayas in Himachal Pradesh province, India. It was recovered from a horizon of dark weathering phosphatic limestone nodules 2 m below the Permian Triassic boundary in the Lingti River valley near Chumik Marpo. The Triassic ammonoid Ophiceras sp. indet. was found a few metres above the base of the overlying Tamba Kurkur Formation, the transgressive base of which is correlated with the Otoceras bed of the Spiti area. The Permian-Triassic boundary is marked by a distinctive 10 cm thick red-weathering, iron oxide-rich layer at the top of the Kuling Formation. For this part of the Gondwana shelf, this horizon suggests erosion accompanied by weathering during latest Permian time (Dorashamian).

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Paleontological Institute and Museum
Dewey Decimal Classification:560 Fossils & prehistoric life
Language:English
Date:1997
Deposited On:22 Oct 2015 15:36
Last Modified:08 Dec 2017 14:23
Publisher:Birkhäuser
ISSN:0012-9402
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.5169/seals-168199

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