Early Ordovician and Devonian conodonts from the western Karakoram and Hindu Kush, northernmost Pakistan

J. A. Talent, M. Gaetani, R. Mawson, P. D. Molloy, P. J. Conaghan, O. Lehnert, J. A. Trotter

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

Extensive tracts of Devonian and older sedimentary and igneous units occur within the axial region of the western Karakoram Block of northernmost Pakistan over a distance in excess of 200 km between the the headwaters of the Karambar valley in northwestern Gilgit Agency to southwestern Chitral. Conodont data indicate that the oldest sedimentary unit so far discriminated within this belt, the Yarkhun Formation, includes horizons of Ordovician (Arenig) age, consistent with an earlier-presented acritarch-based Arenig age for part of the same unit. Conodont data from the 'Lun Shales', a stratigraphic potpourri with little-known Silurian and Devonian tracts, demonstrate the presence of Early Devonian (early Emsian) horizons. The Shogram Formation, widely distributed through the region, spans an appreciable interval of the Middle and Late Devonian mid-Givetian through until at least early Famennian. A major lacuna in sedimentation may be present, represented by all or most of the earlier half of Frasnian time. A biostratigraphically and possibly biogeographically important new species, Icriodus homeomorphus, is described; it is encountered in horizons of early Famennian age (Late triangularis Zone to ?Early crepida Zone).

Original languageEnglish
Pages (from-to)201-230
Number of pages30
JournalRivista Italiana di Paleontologia e Stratigrafia
Volume105
Issue number2
Publication statusPublished - 1 Dec 1999
Externally publishedYes

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Ordovician
Famennian
conodont
acritarch
Emsian
Givetian
Frasnian
headwater
Silurian
sedimentation
new species
valley

Cite this

Talent, J. A. ; Gaetani, M. ; Mawson, R. ; Molloy, P. D. ; Conaghan, P. J. ; Lehnert, O. ; Trotter, J. A. / Early Ordovician and Devonian conodonts from the western Karakoram and Hindu Kush, northernmost Pakistan. In: Rivista Italiana di Paleontologia e Stratigrafia. 1999 ; Vol. 105, No. 2. pp. 201-230.
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Talent, JA, Gaetani, M, Mawson, R, Molloy, PD, Conaghan, PJ, Lehnert, O & Trotter, JA 1999, 'Early Ordovician and Devonian conodonts from the western Karakoram and Hindu Kush, northernmost Pakistan' Rivista Italiana di Paleontologia e Stratigrafia, vol. 105, no. 2, pp. 201-230.

Early Ordovician and Devonian conodonts from the western Karakoram and Hindu Kush, northernmost Pakistan. / Talent, J. A.; Gaetani, M.; Mawson, R.; Molloy, P. D.; Conaghan, P. J.; Lehnert, O.; Trotter, J. A.

In: Rivista Italiana di Paleontologia e Stratigrafia, Vol. 105, No. 2, 01.12.1999, p. 201-230.

Research output: Contribution to journalArticle

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T1 - Early Ordovician and Devonian conodonts from the western Karakoram and Hindu Kush, northernmost Pakistan

AU - Talent, J. A.

AU - Gaetani, M.

AU - Mawson, R.

AU - Molloy, P. D.

AU - Conaghan, P. J.

AU - Lehnert, O.

AU - Trotter, J. A.

PY - 1999/12/1

Y1 - 1999/12/1

N2 - Extensive tracts of Devonian and older sedimentary and igneous units occur within the axial region of the western Karakoram Block of northernmost Pakistan over a distance in excess of 200 km between the the headwaters of the Karambar valley in northwestern Gilgit Agency to southwestern Chitral. Conodont data indicate that the oldest sedimentary unit so far discriminated within this belt, the Yarkhun Formation, includes horizons of Ordovician (Arenig) age, consistent with an earlier-presented acritarch-based Arenig age for part of the same unit. Conodont data from the 'Lun Shales', a stratigraphic potpourri with little-known Silurian and Devonian tracts, demonstrate the presence of Early Devonian (early Emsian) horizons. The Shogram Formation, widely distributed through the region, spans an appreciable interval of the Middle and Late Devonian mid-Givetian through until at least early Famennian. A major lacuna in sedimentation may be present, represented by all or most of the earlier half of Frasnian time. A biostratigraphically and possibly biogeographically important new species, Icriodus homeomorphus, is described; it is encountered in horizons of early Famennian age (Late triangularis Zone to ?Early crepida Zone).

AB - Extensive tracts of Devonian and older sedimentary and igneous units occur within the axial region of the western Karakoram Block of northernmost Pakistan over a distance in excess of 200 km between the the headwaters of the Karambar valley in northwestern Gilgit Agency to southwestern Chitral. Conodont data indicate that the oldest sedimentary unit so far discriminated within this belt, the Yarkhun Formation, includes horizons of Ordovician (Arenig) age, consistent with an earlier-presented acritarch-based Arenig age for part of the same unit. Conodont data from the 'Lun Shales', a stratigraphic potpourri with little-known Silurian and Devonian tracts, demonstrate the presence of Early Devonian (early Emsian) horizons. The Shogram Formation, widely distributed through the region, spans an appreciable interval of the Middle and Late Devonian mid-Givetian through until at least early Famennian. A major lacuna in sedimentation may be present, represented by all or most of the earlier half of Frasnian time. A biostratigraphically and possibly biogeographically important new species, Icriodus homeomorphus, is described; it is encountered in horizons of early Famennian age (Late triangularis Zone to ?Early crepida Zone).

KW - Charun Quartzite

KW - Chitral

KW - Conodonts

KW - Devonian

KW - Famennian

KW - Frasnian

KW - Givetian

KW - Hindu Kush

KW - Karakoram

KW - Lun Shale

KW - Ordovician

KW - Pakistan

KW - Shogram Formation

KW - Yarkhun Formation

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M3 - Article

VL - 105

SP - 201

EP - 230

JO - Rivista Italiana di Paleontologia e Stratigrafia

JF - Rivista Italiana di Paleontologia e Stratigrafia

SN - 0035-6883

IS - 2

ER -

Talent JA, Gaetani M, Mawson R, Molloy PD, Conaghan PJ, Lehnert O et al. Early Ordovician and Devonian conodonts from the western Karakoram and Hindu Kush, northernmost Pakistan. Rivista Italiana di Paleontologia e Stratigrafia. 1999 Dec 1;105(2):201-230.