Improving Early Permian-Triassic chronostratigraphic correlation and the apparent polar wander path of Gondwana: A magnetostratigraphic investigation of the Kiaman Reverse Superchron

Mercedes Elise Belica

doi:10.4225/23/5a5bfc4bcb4dd

Improving Early Permian-Triassic chronostratigraphic correlation and the apparent polar wander path of Gondwana: A magnetostratigraphic investigation of the Kiaman Reverse Superchron

Mercedes Elise Belica

School of Earth Sciences

Research output: Thesis › Doctoral Thesis

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Abstract

This thesis explores Permian-Triassic paleomagnetism and isotopic geochronology of the Sydney and Karoo Basins along the
southern Panthalassan margin of Gondwana. Normal polarities within the Gerringong Volcanics (Sydney Basin) confirm the end
of the Kiaman Reverse Superchron with a 40AR-39AR (plagioclase) age of 265.05 ± 0.46 Ma. Magnetostratigraphic data from the overlying Narrabeen Group locate the Permian-Triassic Boundary within a zone of normal polarity. Magnetostratigraphic and U-Pb isotopic data establish an Early-Middle Permian age for the Ecca Group (Karoo Basin), however, paleomagnetic data from
the upper Balfour Formation support widespread remagnetization of the sedimentary rocks located further east.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	George, Annette, Supervisor Denyszyn, Steven, Supervisor Pisarevsky, Sergei, Supervisor Tohver, Eric, Supervisor
Award date	14 Dec 2017
DOIs	https://doi.org/10.4225/23/5a5bfc4bcb4dd
Publication status	Unpublished - 2017

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THESIS - DOCTOR OF PHILOSOPHY - BELICA Mercedes Elise - 2017
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title = "Improving Early Permian-Triassic chronostratigraphic correlation and the apparent polar wander path of Gondwana: A magnetostratigraphic investigation of the Kiaman Reverse Superchron",

abstract = "This thesis explores Permian-Triassic paleomagnetism and isotopic geochronology of the Sydney and Karoo Basins along thesouthern Panthalassan margin of Gondwana. Normal polarities within the Gerringong Volcanics (Sydney Basin) confirm the endof the Kiaman Reverse Superchron with a 40AR-39AR (plagioclase) age of 265.05 ± 0.46 Ma. Magnetostratigraphic data from the overlying Narrabeen Group locate the Permian-Triassic Boundary within a zone of normal polarity. Magnetostratigraphic and U-Pb isotopic data establish an Early-Middle Permian age for the Ecca Group (Karoo Basin), however, paleomagnetic data fromthe upper Balfour Formation support widespread remagnetization of the sedimentary rocks located further east.",

keywords = "Paleomagnetism, Oernuab, Geochronology, Magnetostratigraphy, Pangea, Geomagnetism, Chronostratigraphy, Paleogeography",

author = "Belica, {Mercedes Elise}",

year = "2017",

doi = "10.4225/23/5a5bfc4bcb4dd",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - Improving Early Permian-Triassic chronostratigraphic correlation and the apparent polar wander path of Gondwana: A magnetostratigraphic investigation of the Kiaman Reverse Superchron

AU - Belica, Mercedes Elise

PY - 2017

Y1 - 2017

N2 - This thesis explores Permian-Triassic paleomagnetism and isotopic geochronology of the Sydney and Karoo Basins along thesouthern Panthalassan margin of Gondwana. Normal polarities within the Gerringong Volcanics (Sydney Basin) confirm the endof the Kiaman Reverse Superchron with a 40AR-39AR (plagioclase) age of 265.05 ± 0.46 Ma. Magnetostratigraphic data from the overlying Narrabeen Group locate the Permian-Triassic Boundary within a zone of normal polarity. Magnetostratigraphic and U-Pb isotopic data establish an Early-Middle Permian age for the Ecca Group (Karoo Basin), however, paleomagnetic data fromthe upper Balfour Formation support widespread remagnetization of the sedimentary rocks located further east.

AB - This thesis explores Permian-Triassic paleomagnetism and isotopic geochronology of the Sydney and Karoo Basins along thesouthern Panthalassan margin of Gondwana. Normal polarities within the Gerringong Volcanics (Sydney Basin) confirm the endof the Kiaman Reverse Superchron with a 40AR-39AR (plagioclase) age of 265.05 ± 0.46 Ma. Magnetostratigraphic data from the overlying Narrabeen Group locate the Permian-Triassic Boundary within a zone of normal polarity. Magnetostratigraphic and U-Pb isotopic data establish an Early-Middle Permian age for the Ecca Group (Karoo Basin), however, paleomagnetic data fromthe upper Balfour Formation support widespread remagnetization of the sedimentary rocks located further east.

KW - Paleomagnetism

KW - Oernuab

KW - Geochronology

KW - Magnetostratigraphy

KW - Pangea

KW - Geomagnetism

KW - Chronostratigraphy

KW - Paleogeography

U2 - 10.4225/23/5a5bfc4bcb4dd

DO - 10.4225/23/5a5bfc4bcb4dd

M3 - Doctoral Thesis

ER -

Improving Early Permian-Triassic chronostratigraphic correlation and the apparent polar wander path of Gondwana: A magnetostratigraphic investigation of the Kiaman Reverse Superchron

Abstract

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