Professor Sandy Cruden
Professor Roberto Weinberg
The interaction between structural geology and fluids and magmas, controlling the evolution of mountain belts and mineralisation
|Dr Jozua van Otterloo |
Analogue modelling of magma transport dynamics and the effects of cooling
| Lauren Wolfram (PhD) |
My PhD research looks at high-temperature metamorphic rocks (migmatites) and granites in northwest Argentina, and the processes contributing to elemental differentiation of the earth during melting of the continental crust. I have implemented a multidisciplinary approach integrating detailed field observations, metamorphic and igneous petrography, whole rock and mineral geochemistry, and zircon and monazite geochronology. I hope to contribute to further understanding the evolution and compositional diversity of crustal-derived magmas, and assess the broader implications for differentiation and thermal stability of the continental crust.
|Ivan Smenov (PhD)|
|Mr Nicholas Hunter (PhD) |
In my project I am using microstructures and textures of mylonitic rocks to develop methods through which the structural and dynamic properties of crustal shear zones can be quantitatively described. The Main Central Thrust (Alaknanda Valley, NW Himalaya) is a natural laboratory for this type of work, as it comprises variably deformed quartz mylonite units across its structure. The simple composition of these units serve as an ideal medium for advanced microstructural analysis. I combine electron back scatter diffraction, neutron diffraction and optical petrography to understand the development of crystallographic preferred orientations (CPO), the modification of microstructures, and the activity of different deformation mechanisms along the strain profile. At the completion of my thesis I hope to provide a quantitative framework for describing shear zones worldwide.
|Alice Roberts (PhD)|
| Frediano Clos (PhD) |
The aim of my project is to provide new structural, geochemical and metamorphic constraints on the evolution of the Archean Yalgoo Dome, a broad elliptical dome (50x100 km) in the Yilgarn Craton of Western Australia.
Mr Martin Schwindinger (PhD)
My project focusses on the different aspects of generation and evolution of granitic magmas in a near source environment by studying migmatites and related intrusive granites in the southern Adelaide fold belt (Kangaroo Island). My goal is to contribute to the ongoing debate about the significance of water-fluxed melting, magma mixing and entrainment of source material in the formation of granitic magmas.
|Pablo Farias (PhD)|
Roberto also has a website where he explores a wide range of geological features and regions, with a wide selection of photographs. It currently consists of over 130 pages that provide the geological context for more than 3000 high-quality photographs (see http://users.monash.edu.au/~weinberg) attracting over 10,000 visitors per year.
Hunter, N., Hasalova, P., and Weinberg, R.F., accepted with changes, Microstructural evidence for the origin of thick ultramylonites: the El Pichao shear zone, NW Argentina, Geological Society of America Bulletin (JIF=4.0).
Weinberg, R.F., accepted with moderate changes, Himalayan Leucogranites: Nature, Timing and Duration of Anatexis, Journal of Metamorphic Geology.
Regmi, K.R., Weinberg, R.F., Nicholls, I.A., Maas, R., Raveggi, M., Evidence for hybridization in the Tynong Province granitoids, Lachlan Fold Belt, Eastern Australia. Australian Journal of Earth Sciences.
Hunter, N.J., Hasalova, P., Weinberg, R.F., and Wilson, C.J., 2016, Fabric controls on strain accommodation in naturally deformed mylonites: the influence of interconnected micaceous layers, Journal of Structural Geology, vol. 83, pp. 180-193.
Ganade de Araujo, Cordani, U.G., Agbossoumounde, Y., Caby, R., Basei, MA.S., Weinberg, R.F., and Sato, K, 2016, Tightening-up NE Brazil and NW Africa connections: new U-Pb/Lu-Hf zircon data of a complete plate tectonic cycle in the Dahomey belt of the West Gondwana Orogen in Togo and Benin, Precambrian Research, vol. 276, pp. 24–42.
Clemens,J. D., Regmi, K., Nicholls, I. A., Weinberg, R. F., and Maas, R. (in press). The Tynong pluton, its mafic synplutonic sheets and igneous microgranular enclaves: the nature of the mantle connection in I-type granitic magmas,Contributions to Mineralogy and Petrology.
Regmi, K.R., Weinberg, R.F. and Nicholls, I., 2016, Testing the chemical signature of chaotic magma mixing, Himalayan Geology, vol. 37, pp. 8-16.
Riel, N., Mercier, J., and Weinberg, R.F., 2016, Convection in a partially molten metasedimentary crust: Insights from the El Oro Complex (Ecuador). Geology. doi:10.1130/G37208.1
Saumur, B., Cruden, A.R., 2016, On the emplacement of the Voisey's Bay intrusion (Labrador, Canada),
Willcock, M., Bargossi, G.M., Weinberg, R.F., et al., 2015, Finding structure in monotony: Using the mineralogical and chemical architecture of the intra-caldera to understand the eruption of the large-volume (> 1000 km3), Permian Ora caldera, Italy Journal of Volcanology and Geothermal Research, v. 306, p. 17-40.
Yang, L., Deng, J., Wang, Z.L., Zhang, L., Goldfarb, R.J., Yuan, W.M., Weinberg, R.F., and Zhang, R.Z., in press, Thermochronologic constraints on evolution of the Linglong Metamorphic Core Complex and implications for gold mineralization: A case study from the Xiadian gold deposit, Jiaodong Peninsula, eastern China. Ore Geology Reviews, v. 72, p. 165-178.
Regenauer-Lieb, K., et al., 2015, Multiscale, multiphysics geomechanics for geodynamics applied to buckling instabilities in the middle of the Australian Craton. Philosophical Magazine, v. 95 (28-30), p. 3055-3077.
Cohalan, L., Weinberg, R.F., Squire, R., and Allen, C., 2015, Early deformation in the Eastern Goldfields, Yilgarn Craton, Western Australia, Precambrian Research, v. 266, p. 212–226.
Mills, S.E., Tomkins, A.G., Weinberg, R.F., and Fan, H.-R., 2015, Implications of pyrite geochemistry for gold mineralisation and remobilisation in the Jiaodong gold district, northeast China. Ore Geology Reviews, v. 71, p. 150-168.
Mills, S.E., Tomkins, A.G., Weinberg, R.F., and Fan, H.-R., 2015, Anomalously silver-rich vein-hosted mineralisation in disseminated-style gold deposits, Jiaodong gold district, China. Ore Geology Reviews, v. 68, p. 127-141.
Finch, M., Weinberg, R.F., Fuentes, G., Hasalova, P., and Becchio, R., 2015, One kilometre-thick ultramylonite, Sierra de Quilmes, Sierras Pampeanas, NW Argentina. Journal of Structural Geology, v. 72, p. 33-54.
Finch, M.A., Weinberg, R.F., Fuentes, M.G., Hasalova, P., and Becchio, R., 2015, Reply to comment by S.H. Buttner on: "One kilometre-thick ultramylonite, Sierra de Quilmes, Sierras Pampeanas, NW Argentina. Journal of Structural Geology, v. 76, p. 84-85.
Regenauer-Lieb, K., Rosenbaum, G., Lyakhovsky, V., Liu, J., Weinberg, R.F., Segev, A., and Weinstein, Y., 2015, Melt instabilities in an intraplate lithosphere and implications for volcanism in the Harrat Ash-Shaam volcanic field (NW Arabia). Journal of Geophysical Research, v. 120, doi:10.1002/2014JB011403.
Weinberg, R.F., Veveakis, E., and Regenauer-Lieb, K., 2015, Compaction-driven melt segregation in migmatites. Geology, v. 43, no. 6, p. 471-474.
Veveakis, E., Regenauer-Lieb, K., and Weinberg, R.F., 2015, Ductile compaction of partially molten rocks: the effect of non-linear viscous rheology on instability and segregation. Geophysical Journal International, v 200, p. 519-523.
Ferreira, V.P., Sial, A.N., Weinberg, R.F., and Pimentel, M.M., 2015, Deep-seated fragmentation, transport of breccia dikes and emplacement: An example from the Borborema province, northeastern Brazil: Journal of South American Earth Sciences, p. 300-308, doi: 10.1016/j.jsames.2014.10.006.
Weinberg, R.F., and Hasalova, P., 2015, Invited contribution, Review of water-fluxed melting, Lithos, v. 212-215, p. 158-188.
Weinberg, R.F., and Hasalova, P., 2015, Reply to comment by J.D. Clemens and G. Stevens on 'Water-fluxed melting of the continental crust: A review, Lithos.
Cabrera, A., Weinberg, R.F., and Wright, H., 2015, Defusing rhyolite explosive eruptions: magma fracturing and degassing associated with obsidian formation, Journal of Volcanology and Geothermal Research, v. 298, p. 71-84.
Kavanagh, J., Boutelier, D., Cruden, A.R., 2015, The mechanics of sill inception, propagation and growth: experimental evidence for rapid reduction in magmatic overpressure, Earth and Planetary Science Letters, vol 421, pp. 117-128.
Saumur, B., Cruden, A.R., Boutelier, D., 2015, Sulfide liquid entrainment by silicate magma: implications for the dynamics and petrogenesis of magmatic sulfide deposits, Journal of Petrology, vol 56, issue 12, pp. 2473-2490.
Saumur, B., Cruden, A.R., Evans-Lamswood, D., Lightfoot, P.C., 2015, Wall-rock structural controls on the genesis of the Voisey's Bay intrusion and its Ni-Cu-Co magmatic sulfide mineralization (Labrador, Canada), Economic Geology, vol 110, issue 3, pp. 691-711.
Vollgger, S.A., Cruden, A.R., Ailleres, L., Cowan, E.J., 2015, Regional dome evolution and its control on ore-grade distribution: Insights from 3D implicit modelling of the Navachab gold deposit, Namibia, Ore Geology Reviews, vol 69, pp. 268-284.