Mesozoic origins and antecedents of Australia's Eastern Highlands

Jones, J. G.; Veevers, J. J.

doi:10.1080/00167618308729258

Cited by 64 publications

(30 citation statements)

References 44 publications

(41 reference statements)

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“…They also mentioned xenocrysts at ϳ490 and 787 Ma. Evidence for the older offshore Triassic-Jurassic arc (Jones and Veevers 1983) is based on volcanogenic detritus in the ClarenceMoreton and other basins (e.g., McElroy 1962; Wells and O'Brien 1994;Reid et al 2009). …”

Section: Permian To Early Triassic Plate Advance: Ssz7 Granite Roots mentioning

confidence: 99%

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

2016

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Non-collisional, convergent margin orogens are generally called accretionary orogens, although there may not have been horizontal accretion across the plate boundary. We revive the term non-collisional orogen and use a Gondwanaland perspective to discuss different types. On the northern margin of the Australian Plate, the New Guinea non-collisional, accretionary orogen was formed by large-scale terrane accretion across an advancing plate margin. On the eastern margin, the Southwest Pacific Orogen is a non-collisional and non-accretionary orogen, involving virtually no horizontal transfer of material across its eastward-retreating plate boundary. In the Tasmanides, the Lachlan Orogen, commonly described as an accretionary orogen, is another non-collisional, non-accretionary orogen developed behind the plate margin after major Cambrian rollback, with resultant backarc basins filled mainly by quartz-rich turbidites subsequently recycled. The outboard New England Orogen is a non-collisional but accretionary orogen, marked by the frontal accretion of continental margin arc detritus, subsequently recycled into younger arcs. The Permian to Cretaceous Rangitata Orogen of New Zealand is an ?oblique non-collisional, accretionary orogen in which Permian-Triassic sediments of the accretionary wedge have no link with inboard (near) arc terranes. Late Jurassic to Cretaceous parts were sourced by a combination of first cycle volcanogenic detritus passing through the forearc basin together with recycling of the exhumed parts of the wedge. All non-collisional orogens involve continental growth, but only the New England Orogen and to a lesser extent the New Guinea Orogen involve significant crustal growth.

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Section: Permian To Early Triassic Plate Advance: Ssz7 Granite Roots mentioning

confidence: 99%

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

2016

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“…SA) [Symonds et al, 1996]. Widespread Triassic and middle Jurassic volcanogenic sediments in a foreland basin along the eastern Gondwanaland margin were derived from a magmatic arc along a west-dipping subduction zone [Jones and Veevers, 1983;Symonds et al, 1996]. The tectonic setting of the margin remained convergent until the Late Jurassic/Early Cretaceous, despite some local rifting events.…”

Section: Plate Tectonic Evolution Of the Australian Platementioning

confidence: 99%

Models of mantle convection incorporating plate tectonics: The Australian region since the Cretaceous

Gurnis

Moresi

Müller

2000

Geophysical Monograph Series

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We propose that the anomalous Cretaceous vertical motion of Australia and distinctive geochemistry and geophysics of the Australian-Antarctic Discordance (AAD) were caused by a subducted slab which migrated beneath the continent during the Cretaceous, stalled within the mantle transition zone, and is presently being drawn up by the Southeast Indian Ridge. During the Early Cretaceous the eastern interior of the Australian continent rapidly subsided, but must have later uplifted on a regional scale. Beneath the AAD the mantle is cooler than normal, as indicated by a variety of observations. Seismic tomography shows an oblong, slab-like structure orientated N-S in the transition zone and lower mantle, consistent with an old subducted slab. Using a three-dimensional model of mantle convection with imposed plate tectonics, we show that both of t hese well documented features are related. The models start with slabs dipping toward the restored eastern Australian margin. As Australia moves east in a hot spot reference frame from 130-90 Ma, a broad dynamic topography depression of decreasing amplitude migrates west across the continent causing the continent to subside and then uplift. Most of the slab descends into the deeper mantle, but the models show part of the cooler mantle becomes trapped within the transition zone. From 40 Ma to the present, wisps of this cool mantle are drawn up by the northwardly migrating ridge between Australia and Antarctica. This causes a circular dynamic topography depression and thinner crust to develop at the present position of the AAD. The AAD is unique within the ocean basins because it is the only place where a modern ridge has migrated over the position of long term Mesozoic subduction. Our study demonstrates the predictive power of mantle convection models when they incorporate plate tectonics.

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“…Major drainage originated at a watershed several hundred kilometres east of the present coast (Jones andVeevers, 1983, 1984).…”

Section: Introductionmentioning

confidence: 99%

Continental rifting and drainage reversal: The clarence river of Eastern Australia

Haworth

Ollier

1992

Earth Surf Processes Landf

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The Clarence River on Australia's east coast has an anomalous drainage pattern. Its right-bank tributaries are markedly barbed, suggesting reversal, whereas Tertiary volcanism has disrupted its left-bank drainage. The southeast-flowing Clarence is closely aligned with the northwest-flowing Condamine River just across the Continental Divide. The Condamine-Clarence alignment is continued by a large southern tributary, the Orara River, which flows northwest, away from the sea, to meet the southeast-flowing Clarence. A broad river with a quite different character flows east from near the Orara-Clarence junction to the sea. This is essentially an overflow channel.This series of aligned streams, the Condamine-Clarence-Orara, represents the remains of an earlier northwest-flowing stream that extended the full length of the Clarence-Moreton Basin, an eastern extension of the Great Artesian Basin.During the Jurassic, the Clarence-Moreton Basin was filled with sediments from the surrounding highlands, including those to the east of the present coastline. Continental rifting from Late Cretaceous times onwards led to the opening of the Tasman Sea, causing the reversal and beheading of the original northwest-flowing streams and the formation of the Great Escarpment.The evolution of the Clarence River does not fit into most conventional geomorphic paradigms such as cycles, climatic geomorphology or steady-state landforms. It is the result of a succession of unique events on a very long timescale, and as such is a classic example of evolutionary geomorphology.

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Mesozoic origins and antecedents of Australia's Eastern Highlands

Cited by 64 publications

References 44 publications

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

Different styles of modern and ancient non-collisional orogens and implications for crustal growth: a Gondwanaland perspective

Models of mantle convection incorporating plate tectonics: The Australian region since the Cretaceous

Continental rifting and drainage reversal: The clarence river of Eastern Australia

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