Biostratigraphic and paleoenvironmental interpretation of Late Triassic sediments on the Exmouth Plateau, Northern Carnarvon Basin, north Western Australia

Liam Gallagher

doi:10.26182/5f63f5da853f1

Biostratigraphic and paleoenvironmental interpretation of Late Triassic sediments on the Exmouth Plateau, Northern Carnarvon Basin, north Western Australia

Liam Gallagher

School of Earth Sciences

Research output: Thesis › Master's Thesis

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Abstract

The study involved palynological analyses of samples from two wells on the Exmouth Plateau to determine Late Triassic vegetation. Stratigraphic units were identified and correlated using bioevents against the regional chronostratigraphy. The Mungaroo and Brigadier formation sediments were deposited in environments from Norian to Rhaetian, upper to lower delta plain, coastal, and marine settings, and were assigned to the M. crenulatus and A. reducta spore-pollen zones. The characterization of botanical affinities of palynomorphs allowed to reconstruct the paleofloral dynamics during the interval considered. Accordingly, climate demonstrated a shift towards warmer, wetter conditions at the end of the Triassic.

Original language	English
Qualification	Masters
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Peyrot, Daniel, Supervisor Bourget, Julien, Supervisor Marshall, Neil, Supervisor
Award date	29 Jun 2020
DOIs	https://doi.org/10.26182/5f63f5da853f1
Publication status	Unpublished - 2020

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THESIS - MASTER OF SCIENCE - GALLAGHER Liam Patrick - 2019
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Cite this

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title = "Biostratigraphic and paleoenvironmental interpretation of Late Triassic sediments on the Exmouth Plateau, Northern Carnarvon Basin, north Western Australia",

abstract = "The study involved palynological analyses of samples from two wells on the Exmouth Plateau to determine Late Triassic vegetation. Stratigraphic units were identified and correlated using bioevents against the regional chronostratigraphy. The Mungaroo and Brigadier formation sediments were deposited in environments from Norian to Rhaetian, upper to lower delta plain, coastal, and marine settings, and were assigned to the M. crenulatus and A. reducta spore-pollen zones. The characterization of botanical affinities of palynomorphs allowed to reconstruct the paleofloral dynamics during the interval considered. Accordingly, climate demonstrated a shift towards warmer, wetter conditions at the end of the Triassic. ",

keywords = "Biostratigraphy, Norian, Rhaetian, dinoflagellate cysts, Northen Carnarvon Basin, Late Triassic, spore-pollen, paleoenvironment, Exmouth plateau",

author = "Liam Gallagher",

year = "2020",

doi = "10.26182/5f63f5da853f1",

language = "English",

school = "The University of Western Australia",

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T1 - Biostratigraphic and paleoenvironmental interpretation of Late Triassic sediments on the Exmouth Plateau, Northern Carnarvon Basin, north Western Australia

AU - Gallagher, Liam

PY - 2020

Y1 - 2020

N2 - The study involved palynological analyses of samples from two wells on the Exmouth Plateau to determine Late Triassic vegetation. Stratigraphic units were identified and correlated using bioevents against the regional chronostratigraphy. The Mungaroo and Brigadier formation sediments were deposited in environments from Norian to Rhaetian, upper to lower delta plain, coastal, and marine settings, and were assigned to the M. crenulatus and A. reducta spore-pollen zones. The characterization of botanical affinities of palynomorphs allowed to reconstruct the paleofloral dynamics during the interval considered. Accordingly, climate demonstrated a shift towards warmer, wetter conditions at the end of the Triassic.

AB - The study involved palynological analyses of samples from two wells on the Exmouth Plateau to determine Late Triassic vegetation. Stratigraphic units were identified and correlated using bioevents against the regional chronostratigraphy. The Mungaroo and Brigadier formation sediments were deposited in environments from Norian to Rhaetian, upper to lower delta plain, coastal, and marine settings, and were assigned to the M. crenulatus and A. reducta spore-pollen zones. The characterization of botanical affinities of palynomorphs allowed to reconstruct the paleofloral dynamics during the interval considered. Accordingly, climate demonstrated a shift towards warmer, wetter conditions at the end of the Triassic.

KW - Biostratigraphy

KW - Norian

KW - Rhaetian

KW - dinoflagellate cysts

KW - Northen Carnarvon Basin

KW - Late Triassic

KW - spore-pollen

KW - paleoenvironment

KW - Exmouth plateau

U2 - 10.26182/5f63f5da853f1

DO - 10.26182/5f63f5da853f1

M3 - Master's Thesis

ER -

Biostratigraphic and paleoenvironmental interpretation of Late Triassic sediments on the Exmouth Plateau, Northern Carnarvon Basin, north Western Australia

Abstract

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