Sedimentary basins of eastern Australia: paleomagnetic constraints on geodynamic evolution in a global context

2009 ◽  
Vol 56 (3) ◽  
pp. 273-308 ◽  
Author(s):  
C. Klootwijk
Keyword(s):  
Sedimentary Basins ◽  
Geodynamic Evolution ◽  
Global Context ◽  
Eastern Australia

Exploring New Zealand's marine territory

2011 ◽  
Vol 51 (1) ◽  
pp. 549 ◽  
Author(s):  
Chris Uruski
Keyword(s):  
New Zealand ◽  
Deep Water ◽  
Seismic Data ◽  
East Coast ◽  
Sedimentary Basins ◽  
Petroleum Exploration ◽  
Seismic Survey ◽  
Data Set ◽  
Eastern Australia ◽  
Deep Water Part

Around the end of the twentieth century, awareness grew that, in addition to the Taranaki Basin, other unexplored basins in New Zealand’s large exclusive economic zone (EEZ) and extended continental shelf (ECS) may contain petroleum. GNS Science initiated a program to assess the prospectivity of more than 1 million square kilometres of sedimentary basins in New Zealand’s marine territories. The first project in 2001 acquired, with TGS-NOPEC, a 6,200 km reconnaissance 2D seismic survey in deep-water Taranaki. This showed a large Late Cretaceous delta built out into a northwest-trending basin above a thick succession of older rocks. Many deltas around the world are petroleum provinces and the new data showed that the deep-water part of Taranaki Basin may also be prospective. Since the 2001 survey a further 9,000 km of infill 2D seismic data has been acquired and exploration continues. The New Zealand government recognised the potential of its frontier basins and, in 2005 Crown Minerals acquired a 2D survey in the East Coast Basin, North Island. This was followed by surveys in the Great South, Raukumara and Reinga basins. Petroleum Exploration Permits were awarded in most of these and licence rounds in the Northland/Reinga Basin closed recently. New data have since been acquired from the Pegasus, Great South and Canterbury basins. The New Zealand government, through Crown Minerals, funds all or part of a survey. GNS Science interprets the new data set and the data along with reports are packaged for free dissemination prior to a licensing round. The strategy has worked well, as indicated by the entry of ExxonMobil, OMV and Petrobras into New Zealand. Anadarko, another new entry, farmed into the previously licensed Canterbury and deep-water Taranaki basins. One of the main results of the surveys has been to show that geology and prospectivity of New Zealand’s frontier basins may be similar to eastern Australia, as older apparently unmetamophosed successions are preserved. By extrapolating from the results in the Taranaki Basin, ultimate prospectivity is likely to be a resource of some tens of billions of barrels of oil equivalent. New Zealand’s largely submerged continent may yield continent-sized resources.

Style and intensity of late Cenozoic deformation in the Nagoorin Basin (eastern Queensland, Australia) and implications for the pattern of strain in an intraplate setting

2018 ◽  
Vol 156 (4) ◽  
pp. 605-619
Author(s):  
ABBAS BABAAHMADI ◽  
GIDEON ROSENBAUM ◽  
RENATE SLIWA ◽  
JOAN ESTERLE ◽  
MOJTABA RAJABI
Keyword(s):  
Seismic Reflection ◽  
Sedimentary Basins ◽  
Continental Margins ◽  
Plate Boundaries ◽  
Reverse Fault ◽  
Late Cenozoic ◽  
The North ◽  
Eastern Australia ◽  
Oil Shales ◽  
Far Field Stress

AbstractEastern Australia was affected by late Cenozoic intraplate deformation in response to far-field stress transmitted from the plate boundaries, but little is known about the intensity and pattern of this deformation. We used recently surveyed two-dimensional seismic reflection lines and aeromagnetic data, and data from the recently released Australian Stress Map, to investigate the structure of the Nagoorin Basin in eastern Queensland. The western margin of the Nagoorin beds was displaced by the Boynedale Fault, which is a NNW-striking SW-dipping oblique strike-slip reverse fault with a vertical throw ofc.900 m andc.16 km sinistral displacement. A significant part of this large sinistral displacement is interpreted to have occurred prior to late Cenozoic time. Several low-angle (<30°) thin-skinned thrusts with a flat-ramp geometry also displaced the Nagoorin beds, which are interpreted to have developed along detachment surfaces in oil shales and claystone. The Boynedale Fault is a segment within longer NNW-striking faults that include the North Pine and West Ipswich fault systems in eastern Queensland. These NNW-striking faults are potentially active, and may accommodate neotectonic thrust movement in response to the present-day NE–SW orientation of SHmax. Results of this study, in conjunction with previous information on sedimentary basins in eastern Australia, indicate that Cenozoic contractional deformation is stronger at the continental margins, possibly due to the presence of pre-existing rift-related structures.

Chronological constraints on the Permian geodynamic evolution of eastern Australia

2014 ◽  
Vol 617 ◽  
pp. 20-30 ◽  
Author(s):  
Pengfei Li ◽  
Gideon Rosenbaum ◽  
Paulo Vasconcelos
Keyword(s):  
Geodynamic Evolution ◽  
Eastern Australia

The Tasmanides: Phanerozoic Tectonic Evolution of Eastern Australia

2018 ◽  
Vol 46 (1) ◽  
pp. 291-325 ◽  
Author(s):  
Gideon Rosenbaum
Keyword(s):  
Tectonic Evolution ◽  
Boundary Migration ◽  
Plate Boundary ◽  
Sedimentary Basins ◽  
Building Blocks ◽  
Crustal Extension ◽  
Plate Margin ◽  
Igneous Provinces ◽  
Eastern Australia ◽  
Convergent Plate Margin

The Tasmanides occupy the eastern third of Australia and provide an extensive record of the evolution of the eastern Gondwanan convergent plate boundary from the Cambrian to the Triassic. This article presents a summary of the primary building blocks (igneous provinces and sedimentary basins) within the Tasmanides, followed by a discussion of the timing and extent of deformation events. Relatively short episodes of contractional deformation alternated with longer periods of crustal extension accompanied by voluminous magmatism. This behavior was likely controlled by plate boundary migration (trench retreat and advance) that was also responsible for bending and segmentation of the convergent plate margin. As a result, the Tasmanides were subjected to at least three major phases of oroclinal bending, in the Silurian, Devonian, and Permian. The most significant segmentation likely occurred at ∼420–400 Ma along a lithospheric-scale boundary that separated the northern and southern parts of the Tasmanides.

Geodynamic evolution of sedimentary basins

Geobios ◽  
1998 ◽  
Vol 31 (4) ◽  
pp. 466
Author(s):  
Pierre Cotillon
Keyword(s):  
Sedimentary Basins ◽  
Geodynamic Evolution

scholarly journals A Globally Significant Potential Megascale Geopark: The Eastern Australian Mantle Hotspot Interacting with a North-Migrating Heterogeneous Continental Plate Creating a Variety of Volcano Types, Magmas, Xenoliths, and Xenocrysts

2021 ◽  
Author(s):  
Vic Semeniuk ◽  
Margaret Brocx
Keyword(s):  
Sedimentary Basins ◽  
Eurasian Plate ◽  
Volcanic System ◽  
Compositional Evolution ◽  
Continental Plate ◽  
Volcanic Chain ◽  
Eastern Australia ◽  
Fold Belts ◽  
Metamorphic Terranes ◽  
Host Rocks

Australia commenced separating from Antarctica some 85 million years ago, finally separating about 33 million years ago, and has been migrating northwards towards the Eurasian plate during that time. In the process, Australia, on its eastern side, progressively passed over a mantle hotspot. A magma plume intersected a variable lithocrust with various lithologic packages such as Phanerozoic sedimentary basins, fold belts and metamorphic terranes, and Precambrian rocks. As such, there was scope for compositional evolution of magmas through melting and assimilation, as well as plucking of host rocks to include xenoliths, and xenocrysts. The volcanic chain, volcanoes, and lava fields that are spread latitudinally along 2000 km of eastern Australia present a globally-significant volcanic system that provides insights into magma and crust interactions, into the variability of xenoliths and xenocrysts, into magma evolution dependent on setting, and into the mantle story of the Earth. The Cosgrove Volcano Chain is an example of this, and stands as a globally-unique potential megascale geopark.

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