Granite expo pittsburgtrackidsp 0063/20/2024 ![]() J Petrol 40:105–132ĭidier J, Barbarin B (1991) Enclaves and granite petrology, developments in petrology. Contrib Mineral Petrol 127:383–390Ĭlynne MA (1999) A complex magma mixing origin of rock erupted in 1915, Lassen Peak, California. EOS Trans Am Geophys Union 76:704Ĭherniak DJ, Hanchar JM, Watson EB (1997) Diffusion of tetravalent cations in zircon. Chem Geol 172:5–24Ĭherniak DJ, Hanchar JM, Watson EB (1995) Hf and rare earth diffusion in zircon. ![]() J Petrol 30:1181–1218Ĭherniak DJ, Watson EB (2000) Pb diffusion in zircon. Aust J Earth Sci 47:123–138Ĭhen YD, Price RC, White AJR, Chappell BW (1989) Inclusions in three S-type granites from southeastern Australia. J Petrol 28:1111–1138Ĭhappell BW, White AJR, Williams IS, Wyborn D, Wyborn LAI (2000) Lachlan Fold Belt granites revisited: high- and low-temperature granites and their implications. Trans R Soc Edinb Earth Sci 79:71–86Ĭhappell BW, White AJR, Wyborn D (1987) The importance of residual source material (restite) in granite petrogenesis. Trans R Soc Edinb Earth Sci 88:159–170Ĭhappell BW, Stephens WE (1988) Origin of infracrustal (I-type) granite magmas. Lithos 78:1–24Ĭhappell BW (1997) Compositional variation within granite suites of the Lachlan Fold Belt: its causes and implications for the physical state of granite magma. Earth Planet Sci Lett 148:243–258īonin B (2004) Do coeval mafic and felsic magmas in post-collisional to within-plate regimes necessarily imply two constrasting, mantle and crust, sources? A review. Lithos 88:155–177īlichert-Toft J, Albarède F (1997) The Lu–Hf geochemistry of chondrites and the evolution of the mantle-crust system. J Geophys Res 95:17747–17756īarbarin B (2005) Mafic magmatic enclaves and mafic rocks associated with some granitoids of the central Sierra Nevada batholith, California: nature, origin, and relations with the hosts. Geology 29:383–386īarbarin B (1990) Plagioclase xenocrysts and mafic magmatic enclaves in some granitoids of the Sierra Nevada Batholith, California. Chem Geol 192:59–79īallard JR, Palin JM, Williams IS, Campbell IH, Faunes A (2001) Two ages of porphyry intrusion resolved for the super-giant Chuquicamata copper deposit of northern Chile by ELA-ICM-MS and SHRIMP. Instead, mixing of mantle-derived mafic magmas with crustal-derived felsic magmas, coupled with assimilation of wall rocks, is compatible with the data.Īndersen T (2002) Correction of common lead in U–Pb analyses that do not report 204Pb. Hafnium isotopic variations in Early Cretaceous zircons rule-out simple crystal–liquid fractionation or restite unmixing as the major genetic link between enclaves and host rocks. Some wall-rock contamination is indicated by inherited zircons with considerably older U–Pb ages and low initial Hf isotopic compositions. The depleted mantle component was not previously revealed by geochemical and Nd and Sr isotopic studies, showing that zircon Hf isotopic data can be a powerful geochemical tracer with the potential to provide unique petrogenetic information. The Hf isotopic composition of the enclaves is distinct from the host monzogranite, indicating that both depleted mantle and crustal sources contributed to their origin. The zircon U–Pb age of the enclaves (120 ± 1 Ma) is identical to that of the host monzogranite (120 ± 1 Ma), establishing that the mafic and felsic magmas were coeval. * Exhibitor opportunities from £299+vat – contact for more information.In situ zircon U–Pb and Hf-isotopic data have been determined for mafic microgranular enclaves and host granitoids from the Early Cretaceous Gudaoling batholith in the Liaodong Peninsula, NE China, in order to constrain the sources and petrogenesis of granites. Reserve your visitor place for FREE today! The annual event attracts 40+ exhibitors and hundreds of visitors including a range of small start-ups and SMEs as well as global energy operators and service providers with links to the region. Enjoy your time at the stunning Ardoe House!.Granite Expo has become a regular feature of the business calendar.Still not sure? We’ll give you 10 reasons to attend. ![]() Taking place at the stunning Ardoe House Hotel Wednesday 28th June 8-4pm, there is no better place to showcase and exhibit your business with other businesses and like-minded professionals across the North-East.Įxhibitors and visitors will be able to listen to guest speakers, visit exhibition stands, participate in seminars and workshops providing an excellent opportunity to connect, learn and inspire and network with fellow like-minded business professionals.Ĩam-9am – VIP Networking – Exhibitors and Sponsorsĩam-9.45am – Opening session – All welcomeġ0am-4pm – Main Expo – all stands free to visit This business exhibition provides a fantastic opportunity to exhibit, network and cross-sell to fellow exhibitors and attending visitors. Join us for Granite EXPO 2023 – our 11th annual event.
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