About: Causes of compositional diversity in a lobe of the Half Dome granodiorite, Tuolumne Batholith, Central Sierra Nevada, California

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About: Causes of compositional diversity in a lobe of the Half Dome granodiorite, Tuolumne Batholith, Central Sierra Nevada, California Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=7834142
Description	The causes of compositional diversity in the Tuolumne Batholith, whether source heterogeneity, magma mixing, or fractional crystallisation, is a matter of longstanding debate. This paper presents data from detailed mapping and a microstructural and major element, trace element and isotopic study of an elongate lobe of the Half Dome granodiorite that protrudes from the southern end of the batholith. The lobe is normally zoned from quartz diorite along the outer margin to high-silica leucogranite in the core. Contacts are steep and gradational, except for the central leucogranite contact, which is locally sharp: magmatic fabrics overprint contacts. A striking feature of the lobe is the 18 wt SiO2 range comparable to that observed for the entire Tuolumne Batholith. Feldspar-compatible elements (Sr and Ba) decrease towards the centre, while Rb increases. Light and middle REEs show a smooth decrease towards the centre of the lobe. Calculated initial isotopic ratios of 87Sr/86Sr(i) and The causes of compositional diversity in the Tuolumne Batholith, whether source heterogeneity, magma mixing, or fractional crystallisation, is a matter of longstanding debate. This paper presents data from detailed mapping and a microstructural and major element, trace element and isotopic study of an elongate lobe of the Half Dome granodiorite that protrudes from the southern end of the batholith. The lobe is normally zoned from quartz diorite along the outer margin to high-silica leucogranite in the core. Contacts are steep and gradational, except for the central leucogranite contact, which is locally sharp: magmatic fabrics overprint contacts. A striking feature of the lobe is the 18 wt SiO2 range comparable to that observed for the entire Tuolumne Batholith. Feldspar-compatible elements (Sr and Ba) decrease towards the centre, while Rb increases. Light and middle REEs show a smooth decrease towards the centre of the lobe. Calculated initial isotopic ratios of 87Sr/86Sr(i) and (en)
Title	Causes of compositional diversity in a lobe of the Half Dome granodiorite, Tuolumne Batholith, Central Sierra Nevada, California Causes of compositional diversity in a lobe of the Half Dome granodiorite, Tuolumne Batholith, Central Sierra Nevada, California (en)
skos:prefLabel	Causes of compositional diversity in a lobe of the Half Dome granodiorite, Tuolumne Batholith, Central Sierra Nevada, California Causes of compositional diversity in a lobe of the Half Dome granodiorite, Tuolumne Batholith, Central Sierra Nevada, California (en)
skos:notation	RIV/00025798:_____/09:00000538!RIV14-MSM-00025798
http://linked.open...avai/riv/aktivita	I P Z
http://linked.open...avai/riv/aktivity	I, P(KJB3111403), Z(MSM0021620855)
http://linked.open...iv/cisloPeriodika	spec. issue 1-2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Žák, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká geologická služba
http://linked.open...dnocenehoVysledku	249767
http://linked.open...ai/riv/idVysledku	RIV/00025798:_____/09:00000538
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	fractional crystallisation, magmatic processes, plutons (en)
http://linked.open.../riv/klicoveSlovo	fractional crystallisation magmatic processes plutons
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[6C9B38C0A9DB]
http://linked.open...i/riv/nazevZdroje	Earth and Environmental Science Transactions of the Royal Society of Edinburgh
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Processes along internal boundaries in magma chambers and their significance for interpreting rheology, fabric formation and emplacement mechanisms
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	100
http://linked.open...iv/tvurceVysledku	Žák, Jiří Erdmann, Saskia Memeti, Valbone Paterson, Scott Economos, Rita Miller, Jonathan
http://linked.open...ain/vavai/riv/wos	000284505000013
http://linked.open...n/vavai/riv/zamer	Material flow mechanisms in the upper spheres of the Earth
issn	1755-6910
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1017/S1755691009016065

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