Patrice F Rey | The University of Sydney (original) (raw)

Books by Patrice F Rey

This ebook is available on iTunes: http://itunes.apple.com/us/book/id1085911016 Structural geolog... more This ebook is available on iTunes: http://itunes.apple.com/us/book/id1085911016
Structural geology is concerned with the deformation of rocks and rock formations. It is a field-based discipline which aims at understanding, from observation of the landscape and the geology visible at its surface, the 3-dimensional geological architecture. This eBook aims at undergraduate students and present basic notions of structural geology including faults and fractures, folds and folds systems, boudins and boudinage, ductile shear zones, foliations and lineations, strain and strain analysis, paleostress analysis.
Amongst all geoscience disciplines, structural geology is perhaps the one that requires the most to develop an sharp sense of observation. Although digital cameras can capture in an instant and at ultra-high resolution our surrounding world, structural geologists keep drawing sketches in their notebooks. They do so for two rea- sons: first cameras capture the world in 2 dimensions only, yet geology can only be understood in a 3D space. Second, sketching forces careful observation and allows for the representation of the geology hidden underneath the ground surface, and that lost to erosion.
I hope this eBook, will help initiate your journey into structural geology. One of the main advantages of the eBook format is its capacity to interactively handle 3D sketches. I have designed mine using Sketchup which I highly recommend to students and colleagues.

A Tectonophysics Special Volume (v. 477). D. Chardon, P. Rey, C. Teyssier, D. L. Whitney. Intro... more A Tectonophysics Special Volume (v. 477).

D. Chardon, P. Rey, C. Teyssier, D. L. Whitney. Introduction

D. Chardon, D. Gapais, F. Cagnard. Flow of ultra-hot orogens: A view from the Precambrian, clues for the Phanerozoic

O. Vanderhaeghe. Migmatites, granites and orogeny: Flow modes of partially-molten rocks and magmas associated with melt/solid segregation in orogenic belts.

P.F. Rey, C. Teyssier, D.L. Whitney. The role of partial melting and extensional strain rates in the development of metamorphic core complexes.

M. Vidal, C. Gumiaux, F. Cagnard, A. Pouclet, G. Ouattara, M. Pichon. Evolution of a Paleoproterozoic "weak type" orogeny in the West African Craton (Ivory Coast).

H. Fritz, V. Tenczer, C. Hauzenberger, E. Wallbrecher, S. Muhongo. Hot granulite nappes - Tectonic styles and thermal evolution of the Proterozoic granulite belts in East Africa.

S. Petitgirard, A. Vauchez, M. Egydio-Silva, O. Bruguier, P. Camps, P. Monié, M. Babinski, M. Mondou. Conflicting structural and geochronological data from the Ibituruna quartz-syenite (SE Brazil): Effect of protracted "hot" orogeny and slow cooling rate?

V. Grégoire, A. Nédélec, P. Monié, J.-M. Montel, J. Ganne, B. Ralison. Structural reworking and heat transfer related to the late-Panafrican Angavo shear zone of Madagascar.

D. Avigad, Z. Gvirtzman. Late Neoproterozoic rise and fall of the northern Arabian-Nubian shield: The role of lithospheric mantle delamination and subsequent thermal subsidence.

A. Gébelin, F. Roger, M. Brunel. Syntectonic crustal melting and high-grade metamorphism in a transpressional regime, Variscan Massif Central, France.

Y. Denèle, P. Olivier, G. Gleizes, P. Barbey. Decoupling between the middle and upper crust during transpression-related lateral flow: Variscan evolution of the Aston gneiss dome (Pyrenees, France).

C. S. Siddoway, C. M. Fanning. Paleozoic tectonism on the East Gondwana margin: Evidence from SHRIMP U-Pb zircon geochronology of a migmatite-granite complex in West Antarctica.

S. H. Büttner. The Ordovician Sierras Pampeanas-Puna basin connection: Basement thinning and basin formation in the Proto-Andean back-arc.

K.L. Schmidt, S.R. Paterson, A.E. Blythe, C. Kopf. Mountain building across a lithospheric boundary during arc construction: The Cretaceous Peninsular Ranges batholith in the Sierra San Pedro Martir of Baja California, Mexico.

Papers by Patrice F Rey

Geological Society of America Abstracts with Programs, 2020

The books and maps we read, the posters we pin on our walls, the TV sets and computer monitors we... more The books and maps we read, the posters we pin on our walls, the TV sets and computer monitors we spend hours watching, the white (or black) boards we use to teach, all reduce our world into planar images. As a result, and through years of oblivious practice, our brain is conditioned to understand the world in two dimensions (2D) only. As structural geologists, we know that the most challenging aspect of teaching and learning structural geology is that we need to be able to mentally manipulate 2D and three-dimensional (3D) objects. Although anyone can learn through practice the art of spatial visualisation, the fact remains that the initial stages of learning structural geology are for many students very challenging, as we naively use 2D images to teach 3D concepts.

Michael Asten Associate Editor for Education matters michael.asten@monash.edu In this issue of Pr... more Michael Asten Associate Editor for Education matters michael.asten@monash.edu In this issue of Preview it is my privilege to introduce an article by Professor Dietmar Müller and Associate Professor Patrice Rey and their team, bringing us an overview of work in progress by the Basin GENESIS Hub at the University of Sydney on plate tectonics and the evolution of sedimentary basins. There is an interesting historical antecedent here; in the 1930s it was a University of Sydney student, Sam Carey, who developed a fascination with the concept of continental drift, and completed a PhD and DSc on tectonics of the Sydney Basin and basins of Papua New Guinea. His fascination with geology was interrupted by war service as a commando (1942–45) but, from the start of his appointment as Professor of Geology at the University of Tasmania in 1946, he was a powerful advocate for continental drift for two decades, a time when ‘drift’ was a derided concept in geosciences of the western world. The theo...

Quantifying the interaction between surface processes and tectonics/deep Earth processes is one i... more Quantifying the interaction between surface processes and tectonics/deep Earth processes is one important aspect of landscape evolution modelling. Both observations and results from numerical modelling indicate that dynamic topography a surface expression of time-varying mantle convection plays a significant role in shaping landscape through geological time. Recent research suggests that dynamic topography also has non-negligible effects on stratigraphic architecture by modifying accommodation space available for sedimentation. In addition, dynamic topography influences the sediment supply to continental margins.

&lt;p&gt;Long-lived high- to ultra-high temperature (HT-UHT) terranes formed most... more &lt;p&gt;Long-lived high- to ultra-high temperature (HT-UHT) terranes formed mostly during the Paleo-Proterozoic and are often associated to supercontinent cycles. Yet the detailed processes and conditions involved in their formation remain largely unresolved. Here we highlight the importance of the specific geothermal conditions necessary to form migmatitic to granulitic crusts. An analytical resolution of the heat equation highlights the interdependency of the thermal parameters controlling the crustal geotherm, i.e. the Moho temperature, when deformation occurs at thermal equilibrium. We further perform thermo-mechanical experiments mimicking an orogenic cycle, from shortening to gravitational collapse, to study the effect of deformation velocity that affects the crustal thermal equilibrium. We show that the formation of HT-UHT terranes is promoted by an elevated radiogenic heat production in the crust. Finally, the interplay between the thermal parameters and the orogenic cycle duration explain the difference in orogenic style through time and why some terranes are preferentially granulitic or migmatitic.&lt;/p&gt;

Extension of the lithosphere creates space that is accommodated by dynamic interaction between se... more Extension of the lithosphere creates space that is accommodated by dynamic interaction between sedimentation and upward mass transport of the deep crust (exhumation). Ductile flow of the deep crust is prevalent in global rifts, and ductile layers within the lithosphere exert a first-order control on the architecture of the necking zone within the rift and the deformation mode during early rifting. Sedimentation alters the thermal structure of the rift, thereby impacting the strength profile of the lithosphere and impacting strain localisation during rifting. The dynamic interaction between syn-rift sedimentation and flow of ductile crust is investigated in a suite of 2D numerical experiments under lithospheric extension (2 cm/yr), in which two densities of rift infill (2620, 2800 kg/m) and three deep crust viscosities (weak, intermediate, strong) are used. In addition, the thickness of the crust (40-60 km) and the temperature of the Moho (600-800◦C) are systematically varied between...

The core of orogens typically consists of migmatite terrains and associated crustal-derived grani... more The core of orogens typically consists of migmatite terrains and associated crustal-derived granite bodies (typically leucogranite) that represent former partially molten crust. Metamorphic investigations indicate that migmatites crystallize at low pressure (cordierite stability) but also contain inclusions of refractory material (mafic, aluminous) that preserve evidence of crystallization at high pressure (HP), including HP granulite and eclogite (1.0-1.5 GPa), and in some cases ultrahigh pressure (2.5-3.0 GPa) when the continental crust was subducted (i.e. Norwegian Caledonides). These observations indicate that the partially molten crust originates in the deep crust or at mantle depths, traverses the entire orogenic crust, and crystallizes at shallow depth, in some cases at the near-surface (∼2 km depth) based on low-T thermochronology. Metamorphic assemblages generally show that this nearly isothermal decompression is rapid based on disequilibrium textures (symplectites). Theref...

Nature Communications, 2020

During extension, the continental lithosphere thins and breaks up, forming either wide or narrow ... more During extension, the continental lithosphere thins and breaks up, forming either wide or narrow rifts depending on the thermo-mechanical state of the extending lithosphere. Wide continental rifts, which can reach 1,000 km across, have been extensively studied in the North American Cordillera and in the Aegean domain. Yet, the evolutionary process from wide continental rift to continental breakup remains enigmatic due to the lack of seismically resolvable data on the distal passive margin and an absence of onshore natural exposures. Here, we show that Eocene extension across the northern margin of the South China Sea records the transition between a wide continental rift and highly extended (<15 km) continental margin. On the basis of high-resolution seismic data, we document the presence of dome structures, a corrugated and grooved detachment fault, and subdetachment deformation involving crustal-scale nappe folds and magmatic intrusions, which are coeval with supradetachment ba...

Journal of Metamorphic Geology, 2020