Okay (2000) presents a new structural model for the Menderes Massif of western Turkey in which th... more Okay (2000) presents a new structural model for the Menderes Massif of western Turkey in which the tectonometamorphic units of the Menderes Massif along with the corresponding metamorphic isograds form a south-closing recumbent fold at a 100 km scale, the “Menderes fold”. After the Menderes fold formed, it was refolded followed by the formation of a ~25 km topsouth displacing thrust and emplacement of the Lycian nappes (Okay 2000, his Fig. 8; Fig. 1). Okay's model represents a new and provocative view of the Menderes Massif. The model is based on ...
Field Guide to Samos and the Menderes Massif: Along-Strike Variations in the Mediterranean Tethyan Orogen, 2011
... 35 Day 4—Section across the Bozdağ and Aydın Mountains . . . . . 35 Overview . . . . . ... 35... more ... 35 Day 4—Section across the Bozdağ and Aydın Mountains . . . . . 35 Overview . . . . . ... 35 Bozdağ Mountains (Localities 4.1 to 4.6) . . . . ...
Even though a massive volume of data has been accumulated in Mount Isa's 80 year mining hist... more Even though a massive volume of data has been accumulated in Mount Isa's 80 year mining history, there are many aspects of ore deposition that remain controversial or uncertain. The main aim of the I4 project was to reduce exploration risk through developing a process ...
Numerical simulations demonstrate that the dynamic behavior of the lower crust can exert a crucia... more Numerical simulations demonstrate that the dynamic behavior of the lower crust can exert a crucial control on the tectonic denudation of metamorphic core complexes. Our model suggests that the structural architecture and thermal history of terrains exhumed by extensional shear zones can be controlled by whether or not localization of deformation occurs in the lower crust. Predicted architectures range from
Geothermal fields and hydrothermal mineral deposits are manifestations of the interaction between... more Geothermal fields and hydrothermal mineral deposits are manifestations of the interaction between heat transfer and fluid flow in the Earth’s crust. Understanding the factors that drive fluid flow is essential for managing geothermal energy production and for understanding the genesis of hydrothermal mineral systems. We provide an overview of fluid flow drivers with a focus on flow driven by heat
ABSTRACT The > 1090 to < 1040 Ma Giles Event added extraordinary volumes of mantle ... more ABSTRACT The > 1090 to < 1040 Ma Giles Event added extraordinary volumes of mantle derived magma to the crust of the Musgrave region of central Australia. This included one of Earth’s largest mafic intrusions – the Mantamaru intrusion – and the c. 1075 Ma formation of the Warakurna large igneous province, which spread dolerite intrusions across ~ 1.5 million km2 of western and central Australia. It also included one of the most voluminous additions of juvenile felsic material to Earth’s crust, with the development of one of the world’s longest-lived rhyolitic centres, including the Talbot supervolcano. Previous suggestions that the event was the result of a deep mantle plume cannot adequately account for the > 50 m.y. duration of mantle derived magmatism or the fact that isolated localities such as the Talbot Sub-basin preserve the entire magmatic record, with no discernible regional age progressive spatial trend. For at least 100 m.y. before the Giles Event, the Musgrave region experienced high- to ultra-high crustal temperatures – possibly as an ultra-hot orogen born from a c. 1300 Ma back-arc. Granitic magmatism prior to the Giles Event also involved a significant mantle-derived component and was accompanied by mid-crustal ultra-high temperature (> 1000 °C) metamorphism reflecting a thin and weak lithosphere. This magmatism also resulted in a mid-crustal (~ 25 km deep) layer greatly enriched in radiogenic heat producing elements that strongly augmented the already extreme crustal geotherms over a prolonged period. The Giles Event may have been triggered when this regional Musgrave thermal anomaly was displaced, and again significantly destabilised, along the Mundrabilla Shear Zone – a continent-scale structure that juxtaposed the Musgrave Province against the easterly extension of the Capricorn Orogen where pre-existing orogen-scale structures were in extension. These orogen-scale structures funnelled the magmas that produced the Warakurna large igneous province and the intersection of the Musgrave thermal anomaly and the Mundrabilla Shear Zone was the site of the Talbot supervolcano. Although previously thought to be a result of a deep mantle plume, the Giles Event was more likely the product of intra-plate tectonic processes involving an anomalous and prolonged thermal pre-history, a magma-focussing lithospheric architecture and large-scale tectonic movements.
Mineral Deposit Research: Meeting the Global Challenge, 2005
... Melanie Coward, Bruce Hobbs, Dan Johnson, Gordon Lister, Mark McGeough, Bill Perkins, Paul Ro... more ... Melanie Coward, Bruce Hobbs, Dan Johnson, Gordon Lister, Mark McGeough, Bill Perkins, Paul Roberts, Justin Tolman and Chris Waring. We would also like to thank Dugi Wilson and Paul Gow of Xstrata Copper for their support. Andy Wilde · Melissa Gregory · Robert Duncan ...
Okay (2000) presents a new structural model for the Menderes Massif of western Turkey in which th... more Okay (2000) presents a new structural model for the Menderes Massif of western Turkey in which the tectonometamorphic units of the Menderes Massif along with the corresponding metamorphic isograds form a south-closing recumbent fold at a 100 km scale, the “Menderes fold”. After the Menderes fold formed, it was refolded followed by the formation of a ~25 km topsouth displacing thrust and emplacement of the Lycian nappes (Okay 2000, his Fig. 8; Fig. 1). Okay's model represents a new and provocative view of the Menderes Massif. The model is based on ...
Field Guide to Samos and the Menderes Massif: Along-Strike Variations in the Mediterranean Tethyan Orogen, 2011
... 35 Day 4—Section across the Bozdağ and Aydın Mountains . . . . . 35 Overview . . . . . ... 35... more ... 35 Day 4—Section across the Bozdağ and Aydın Mountains . . . . . 35 Overview . . . . . ... 35 Bozdağ Mountains (Localities 4.1 to 4.6) . . . . ...
Even though a massive volume of data has been accumulated in Mount Isa's 80 year mining hist... more Even though a massive volume of data has been accumulated in Mount Isa's 80 year mining history, there are many aspects of ore deposition that remain controversial or uncertain. The main aim of the I4 project was to reduce exploration risk through developing a process ...
Numerical simulations demonstrate that the dynamic behavior of the lower crust can exert a crucia... more Numerical simulations demonstrate that the dynamic behavior of the lower crust can exert a crucial control on the tectonic denudation of metamorphic core complexes. Our model suggests that the structural architecture and thermal history of terrains exhumed by extensional shear zones can be controlled by whether or not localization of deformation occurs in the lower crust. Predicted architectures range from
Geothermal fields and hydrothermal mineral deposits are manifestations of the interaction between... more Geothermal fields and hydrothermal mineral deposits are manifestations of the interaction between heat transfer and fluid flow in the Earth’s crust. Understanding the factors that drive fluid flow is essential for managing geothermal energy production and for understanding the genesis of hydrothermal mineral systems. We provide an overview of fluid flow drivers with a focus on flow driven by heat
ABSTRACT The > 1090 to < 1040 Ma Giles Event added extraordinary volumes of mantle ... more ABSTRACT The > 1090 to < 1040 Ma Giles Event added extraordinary volumes of mantle derived magma to the crust of the Musgrave region of central Australia. This included one of Earth’s largest mafic intrusions – the Mantamaru intrusion – and the c. 1075 Ma formation of the Warakurna large igneous province, which spread dolerite intrusions across ~ 1.5 million km2 of western and central Australia. It also included one of the most voluminous additions of juvenile felsic material to Earth’s crust, with the development of one of the world’s longest-lived rhyolitic centres, including the Talbot supervolcano. Previous suggestions that the event was the result of a deep mantle plume cannot adequately account for the > 50 m.y. duration of mantle derived magmatism or the fact that isolated localities such as the Talbot Sub-basin preserve the entire magmatic record, with no discernible regional age progressive spatial trend. For at least 100 m.y. before the Giles Event, the Musgrave region experienced high- to ultra-high crustal temperatures – possibly as an ultra-hot orogen born from a c. 1300 Ma back-arc. Granitic magmatism prior to the Giles Event also involved a significant mantle-derived component and was accompanied by mid-crustal ultra-high temperature (> 1000 °C) metamorphism reflecting a thin and weak lithosphere. This magmatism also resulted in a mid-crustal (~ 25 km deep) layer greatly enriched in radiogenic heat producing elements that strongly augmented the already extreme crustal geotherms over a prolonged period. The Giles Event may have been triggered when this regional Musgrave thermal anomaly was displaced, and again significantly destabilised, along the Mundrabilla Shear Zone – a continent-scale structure that juxtaposed the Musgrave Province against the easterly extension of the Capricorn Orogen where pre-existing orogen-scale structures were in extension. These orogen-scale structures funnelled the magmas that produced the Warakurna large igneous province and the intersection of the Musgrave thermal anomaly and the Mundrabilla Shear Zone was the site of the Talbot supervolcano. Although previously thought to be a result of a deep mantle plume, the Giles Event was more likely the product of intra-plate tectonic processes involving an anomalous and prolonged thermal pre-history, a magma-focussing lithospheric architecture and large-scale tectonic movements.
Mineral Deposit Research: Meeting the Global Challenge, 2005
... Melanie Coward, Bruce Hobbs, Dan Johnson, Gordon Lister, Mark McGeough, Bill Perkins, Paul Ro... more ... Melanie Coward, Bruce Hobbs, Dan Johnson, Gordon Lister, Mark McGeough, Bill Perkins, Paul Roberts, Justin Tolman and Chris Waring. We would also like to thank Dugi Wilson and Paul Gow of Xstrata Copper for their support. Andy Wilde · Melissa Gregory · Robert Duncan ...
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