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Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway.

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Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway. / Hounslow, Mark W.; Hu, M.; Mork, A. et al.

In: Journal of the Geological Society, Vol. 164, No. 3, 01.05.2007, p. 581-597.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Hounslow, MW, Hu, M, Mork, A, Vigran, JO, Weitschat, W & Orchard, MJ 2007, 'Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway.', Journal of the Geological Society, vol. 164, no. 3, pp. 581-597. https://doi.org/10.1144/0016-76492005-184

APA

Hounslow, M. W., Hu, M., Mork, A., Vigran, J. O., Weitschat, W., & Orchard, M. J. (2007). Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway. Journal of the Geological Society, 164(3), 581-597. https://doi.org/10.1144/0016-76492005-184

Vancouver

Hounslow MW, Hu M, Mork A, Vigran JO, Weitschat W, Orchard MJ. Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway. Journal of the Geological Society. 2007 May 1;164(3):581-597. doi: 10.1144/0016-76492005-184

Author

Hounslow, Mark W. ; Hu, M. ; Mork, A. et al. / Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway. In: Journal of the Geological Society. 2007 ; Vol. 164, No. 3. pp. 581-597.

Bibtex

@article{4bf5212a69254598b0422bf5941c2564,
title = "Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway.",
abstract = "Palaeomagnetic and biostratigraphic data were obtained for the latest Ladinian and most of the Carnian (Botneheia Formation to basal Kapp Toscana Group), from two sections in central Spitsbergen (Svalbard archipelago). Thermal and AF demagnetisation reveal a magnetisation of both normal and reversed polarities. The mean directions pass reversal and fold tests and are similar to other European Late Triassic palaeopoles. One of the sections displays 15o of vertical-axis, clockwise, tectonic rotation on a d{\'e}collement in the underlying Botneheia Formation. The magnetostratigraphy is dominated by normal polarity in the uppermost Botneheia Formation and into the Tschermakfjellet and basal De Geerdalen formations. A substantial hiatus characterizes the Ladinian- Carnian boundary in central Spitsbergen, so reverse magnetozones, identified in Tethyan sections near this boundary, are absent. Magnetostratigraphic correlation, along with palynostratigraphic constraint, indicates most of the De Geerdalen Formation is Lower Carnian. The magnetostratigraphy and palynology, indicates the Isfjorden Member (upper unit of the De Geerdalen Formation) is probably mid Carnian in age. Change in the lithologic architecture in the Isfjorden Member, compared to the underlying parts of the De Geerdalen Fm, suggests a hiatus near the base of the member, which may represent a mid Carnian unconformity, not previously recognized on Spitsbergen.",
keywords = "Magnetostratigraphy, Palynology, Triassic, Carnian",
author = "Hounslow, {Mark W.} and M. Hu and A. Mork and Vigran, {J. O.} and W. Weitschat and Orchard, {M. J.}",
year = "2007",
month = may,
day = "1",
doi = "10.1144/0016-76492005-184",
language = "English",
volume = "164",
pages = "581--597",
journal = "Journal of the Geological Society",
issn = "0016-7649",
publisher = "Geological Society of London",
number = "3",

}

RIS

TY - JOUR

T1 - Magneto-biostratigraphy of the Middle to Upper Triassic transition, central Spitsbergen, arctic Norway.

AU - Hounslow, Mark W.

AU - Hu, M.

AU - Mork, A.

AU - Vigran, J. O.

AU - Weitschat, W.

AU - Orchard, M. J.

PY - 2007/5/1

Y1 - 2007/5/1

N2 - Palaeomagnetic and biostratigraphic data were obtained for the latest Ladinian and most of the Carnian (Botneheia Formation to basal Kapp Toscana Group), from two sections in central Spitsbergen (Svalbard archipelago). Thermal and AF demagnetisation reveal a magnetisation of both normal and reversed polarities. The mean directions pass reversal and fold tests and are similar to other European Late Triassic palaeopoles. One of the sections displays 15o of vertical-axis, clockwise, tectonic rotation on a décollement in the underlying Botneheia Formation. The magnetostratigraphy is dominated by normal polarity in the uppermost Botneheia Formation and into the Tschermakfjellet and basal De Geerdalen formations. A substantial hiatus characterizes the Ladinian- Carnian boundary in central Spitsbergen, so reverse magnetozones, identified in Tethyan sections near this boundary, are absent. Magnetostratigraphic correlation, along with palynostratigraphic constraint, indicates most of the De Geerdalen Formation is Lower Carnian. The magnetostratigraphy and palynology, indicates the Isfjorden Member (upper unit of the De Geerdalen Formation) is probably mid Carnian in age. Change in the lithologic architecture in the Isfjorden Member, compared to the underlying parts of the De Geerdalen Fm, suggests a hiatus near the base of the member, which may represent a mid Carnian unconformity, not previously recognized on Spitsbergen.

AB - Palaeomagnetic and biostratigraphic data were obtained for the latest Ladinian and most of the Carnian (Botneheia Formation to basal Kapp Toscana Group), from two sections in central Spitsbergen (Svalbard archipelago). Thermal and AF demagnetisation reveal a magnetisation of both normal and reversed polarities. The mean directions pass reversal and fold tests and are similar to other European Late Triassic palaeopoles. One of the sections displays 15o of vertical-axis, clockwise, tectonic rotation on a décollement in the underlying Botneheia Formation. The magnetostratigraphy is dominated by normal polarity in the uppermost Botneheia Formation and into the Tschermakfjellet and basal De Geerdalen formations. A substantial hiatus characterizes the Ladinian- Carnian boundary in central Spitsbergen, so reverse magnetozones, identified in Tethyan sections near this boundary, are absent. Magnetostratigraphic correlation, along with palynostratigraphic constraint, indicates most of the De Geerdalen Formation is Lower Carnian. The magnetostratigraphy and palynology, indicates the Isfjorden Member (upper unit of the De Geerdalen Formation) is probably mid Carnian in age. Change in the lithologic architecture in the Isfjorden Member, compared to the underlying parts of the De Geerdalen Fm, suggests a hiatus near the base of the member, which may represent a mid Carnian unconformity, not previously recognized on Spitsbergen.

KW - Magnetostratigraphy

KW - Palynology

KW - Triassic

KW - Carnian

U2 - 10.1144/0016-76492005-184

DO - 10.1144/0016-76492005-184

M3 - Journal article

VL - 164

SP - 581

EP - 597

JO - Journal of the Geological Society

JF - Journal of the Geological Society

SN - 0016-7649

IS - 3

ER -