Search Results - "Hetherington, Callum J."

Fluid-mediated partial alteration in monazite: the role of coupled dissolution–reprecipitation in element redistribution and mass transfer by Harlov, Daniel E., Wirth, Richard, Hetherington, Callum J.

“…Monazite [(Ce,LREE,Th,U,Ca)(P,Si)O 4 ], with complex zoning in Th and other elements, is commonly observed in metamorphic and igneous rocks. The hypothesis…”
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Experimental metasomatism of monazite and xenotime: mineral stability, REE mobility and fluid composition by Hetherington, Callum J., Harlov, Daniel E., Budzyń, Bartosz

“…In this study a Th-bearing monazite from a Brazil beach sand, a low Th monazite from a Malawi carbonatite, and a xenotime from a pegmatite in northern Pakistan…”
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Microprobe Monazite Geochronology: Understanding Geologic Processes by Integrating Composition and Chronology by Williams, Michael L., Jercinovic, Michael J., Hetherington, Callum J.

“…Monazite is a light rare earth element (LREE)-bearing phosphate mineral that is present in a wide variety of rock types, has an extremely variable composition…”
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Carbonatite in a post-collisional tectonic setting: Geochronology and emplacement conditions at Naantali, SW Finland by Woodard, Jeremy, Hetherington, Callum J.

“…•Carbonatite intruded in a post-collisional tectonic setting at 1796±9Ma.•Constrains minimum age for onset of tectonic extension in southwest Finland.•U–Th–Pb…”
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Apatite as an alternative petrochronometer to trace the evolution of magmatic systems containing metamict zircon by Yu, Hao-Cheng, Qiu, Kun-Feng, Hetherington, Callum J., Chew, David, Huang, Ya-Qi, He, Deng-Yang, Geng, Jian-Zhen, Xian, Hai-Yang

“…Obtaining reliable petrochronological and geochemical data from metamict zircon may be challenging. Metamict zircon and crystalline apatite from the Meiwu…”
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Geochemistry of garnet in pegmatites from the Boroujerd Intrusive Complex, Sanandaj-Sirjan Zone, western Iran: implications for the origin of pegmatite melts by Rahmani Javanmard, Somayeh, Tahmasbi, Zahra, Ding, Xing, Ahmadi Khalaji, Ahmad, Hetherington, Callum J.

“…Pegmatite-hosted garnets from four localities in the Boroujerd region, Lorestan (Western Iran), have been analysed for major and selected trace element…”
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Reply to the comment by D. W. Hedding by Roberts, R. James, Lehong, Keabetswe D., Botha, Andries E. J., Costin, Gelu, De Beer, Frikkie C., Hoffman, Willem J., Hetherington, Callum J.

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Clinopyroxene megacrysts from Marion Island, Antarctic Ocean: evidence for a late stage shallow origin by Roberts, R. James, Lehong, Keabetswe D., Botha, Andries E. J., Costin, Gelu, De Beer, Frikkie C., Hoffman, Willem J., Hetherington, Callum J.

“…Clinopyroxene megacrysts (up to 5 cm) from a scoria cone on Marion Island, Antarctic Ocean are zoned, with compositionally distinct low (Al + Ti) and high (Al…”
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Titanite Mineralization of Microbial Bioalteration Textures in Jurassic Volcanic Glass, Coast Range Ophiolite, California by Izawa, Matthew R. M., Banerjee, Neil R., Shervais, John W., Flemming, Roberta L., Hetherington, Callum J., Muehlenbachs, Karlis, Schultz, Cynthia, Das, Debarati, Hanan, Barry B.

“…Volcanic glasses are rarely preserved in the rock record, and the quality of preservation generally declines with increasing age. Records preserved in ancient…”
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Organic Matter Preservation and Incipient Mineralization of Microtubules in 120 Ma Basaltic Glass by Izawa, Matthew R. M., Dynes, James J., Banerjee, Neil R., Flemming, Roberta L., MacLean, Lachlan C. W., Hetherington, Callum J., Matveev, Sergei, Southam, Gordon

“…Hollow tubular structures in subaqueously-emplaced basaltic glass may represent trace fossils caused by microbially-mediated glass dissolution. Mineralized…”
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The chemistry of barium anomalies in the Berisal Complex, Simplon Region, Switzerland by Hetherington, Callum J., Lundmark, Mattias, Graeser, Stefan, Gieré, Reto

“…The petrographic and geochemical features of two zoisite–celsian gneiss outcrops from the Berisal Complex, characterised by a syn-kinematic mineral assemblage…”
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A multi-mineral U-(Th)-Pb dating study of the Stetind pegmatite of the Tysfjord region, Norway, and implications for production of NYF-rare element pegmatites during orogenic collapse by Hetherington, Callum J., Mailloux, G. Annie, Miller, Brent V.

“…Field relationships, textures, compositions and U-(Th)-Pb dates for minerals from the niobium‑yttrium‑fluorine (NYF-) Stetind pegmatite in the 1.798 Ga…”
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Ganterite, a new barium-dominant analogue of muscovite from the Berisal Complex, Simplon region, Switzerland by Graeser, Stefan, Hetherington, Callum J, Gieré, Reto

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Composition of barium-rich white micas from the Berisal Complex, Simplon region, Switzerland by Hetherington, Callum J, Gieré, Reto, Graeser, Stefan

“…EPMA values for white micas from several Ba-enriched localities in the Berisal complex establish that an extensive solid solution exists between the new…”
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Understanding geologic processes with xenotime: Composition, chronology, and a protocol for electron probe microanalysis by Hetherington, Callum J., Jercinovic, Michael J., Williams, Michael L., Mahan, Kevin

“…Xenotime (YPO 4) is iso-structural with zircon-group minerals and lies at one end of a compositional solid-solution with monazite. As with monazite and zircon,…”
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Paleogene mid-crustal intrusions in the Ruby Mountains–East Humboldt Range metamorphic core complex, northeastern Nevada, USA by Snoke, Arthur W., Barnes, Calvin G., Howard, Keith A., Romanoski, Anthony, Premo, Wayne R., Hetherington, Callum J., Strike, Andrew T., Frost, Carol D., Copeland, Peter, Lee, Sang-yun

“…Abstract Middle Eocene to early Oligocene intrusions, widespread in the Ruby Mountains–East Humboldt Range metamorphic core complex, Nevada, USA, provide…”
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Geochronology of zircon megacrysts from nepheline-bearing gneisses as constraints on tectonic setting: implications for resetting of the U-Pb and Lu-Hf isotopic systems by Ashwal, L. D., Armstrong, R. A., Roberts, R. J., Schmitz, M. D., Corfu, F., Hetherington, C. J., Burke, K., Gerber, M.

“…Nepheline-bearing gneisses from the 75 km2 Tambani body in the Mozambique Belt of southern Malawi, are miaskitic biotite-nepheline monzodiorites, reflecting an…”
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Application of electron probe microanalysis Th–U–total Pb geochronology to provenance studies of sedimentary rocks: An example from the Carpathian flysch by Budzyń, Bartosz, Hetherington, Callum J., Williams, Michael L., Jercinovic, Michael J., Dumond, Gregory, Michalik, Marek

“…Two gneiss and one granulite cobble from the ca. 60 Ma Silesian Unit flysch rocks (Western Outer Carpathians, southern Poland) have been studied. These cobbles…”
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Microprobe Monazite Geochronology: Understanding Geologic Processes by Integrating Composition and Chronology by Williams, Michael L, Jercinovic, Michael J, Hetherington, Callum J

“…Monazite is a light rare earth element (LREE)-bearing phosphate mineral that is present in a wide variety of rock types, has an extremely variable composition…”
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