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    Rights statement: This is the author’s version of a work that was accepted for publication in Lithos. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Lithos, 328-329, 2019 DOI: 10.1016/j.lithos.2019.01.017

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The Gold Flat Tuff, Nevada: Insights into the evolution of peralkaline silicic magmas

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The Gold Flat Tuff, Nevada : Insights into the evolution of peralkaline silicic magmas. / MacDonald, Raymond; Bagiński, Bogusław; Belkin, Harvey et al.

In: Lithos, Vol. 328-329, 01.03.2019, p. 1-13.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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MacDonald R, Bagiński B, Belkin H, White J, Noble DC. The Gold Flat Tuff, Nevada: Insights into the evolution of peralkaline silicic magmas. Lithos. 2019 Mar 1;328-329:1-13. Epub 2019 Jan 19. doi: 10.1016/j.lithos.2019.01.017

Author

MacDonald, Raymond ; Bagiński, Bogusław ; Belkin, Harvey et al. / The Gold Flat Tuff, Nevada : Insights into the evolution of peralkaline silicic magmas. In: Lithos. 2019 ; Vol. 328-329. pp. 1-13.

Bibtex

@article{6e5f0907f7ce4b21826687527f91f5af,
title = "The Gold Flat Tuff, Nevada: Insights into the evolution of peralkaline silicic magmas",
abstract = "The Gold Flat Tuff is the youngest (9.15 Ma) ash-flow sheet erupted from the Black Mountain Volcanic Centre, southwest Nevada, USA. This paper explores some aspects of the very complex nature of the tuff's magmatic plumbing system. The main body of the deposit is a mixed magma product, comprising pantelleritic and comenditic melts derived from independently evolving reservoirs, and antecrysts and enclaves derived from a range of basic to intermediate sources. Metre-scale cognate xenoliths point to the presence of alkali feldspar accumulation zones. The pantellerite contains phenocrysts of fluorite and chevkinite-(Ce). The inferred intermediate magma component contains perrierite-(Ce) phenocrysts. The pantellerite has unusually high contents of F (≤2.2 wt%), F + Cl (≤2.9 wt%) and ZrO 2 (≤1.04 wt%). The high halogen contents may have influenced the evolution of the strongly peralkaline magma. The crystallization conditions are poorly constrained but those for the pantelleritic magma may have been close to water-saturation (>4 wt% melt water) at temperatures ~740 °C and fO 2 around FMQ. ",
keywords = "Chevkinite-(Ce) phenocrysts, Fluorite and, Gold Flat Tuff, Magma mixing, Nevada, Peralkaline rhyolites, Topic:, ash flow, fluorite, magma, magmatism, peralkaline rock, phenocryst, rhyolite, United States",
author = "Raymond MacDonald and Bogus{\l}aw Bagi{\'n}ski and Harvey Belkin and John White and D.C. Noble",
note = "This is the author{\textquoteright}s version of a work that was accepted for publication in Lithos. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Lithos, 328-329, 2019 DOI: 10.1016/j.lithos.2019.01.017",
year = "2019",
month = mar,
day = "1",
doi = "10.1016/j.lithos.2019.01.017",
language = "English",
volume = "328-329",
pages = "1--13",
journal = "Lithos",
issn = "0024-4937",
publisher = "Elsevier Science B.V.",

}

RIS

TY - JOUR

T1 - The Gold Flat Tuff, Nevada

T2 - Insights into the evolution of peralkaline silicic magmas

AU - MacDonald, Raymond

AU - Bagiński, Bogusław

AU - Belkin, Harvey

AU - White, John

AU - Noble, D.C.

N1 - This is the author’s version of a work that was accepted for publication in Lithos. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Lithos, 328-329, 2019 DOI: 10.1016/j.lithos.2019.01.017

PY - 2019/3/1

Y1 - 2019/3/1

N2 - The Gold Flat Tuff is the youngest (9.15 Ma) ash-flow sheet erupted from the Black Mountain Volcanic Centre, southwest Nevada, USA. This paper explores some aspects of the very complex nature of the tuff's magmatic plumbing system. The main body of the deposit is a mixed magma product, comprising pantelleritic and comenditic melts derived from independently evolving reservoirs, and antecrysts and enclaves derived from a range of basic to intermediate sources. Metre-scale cognate xenoliths point to the presence of alkali feldspar accumulation zones. The pantellerite contains phenocrysts of fluorite and chevkinite-(Ce). The inferred intermediate magma component contains perrierite-(Ce) phenocrysts. The pantellerite has unusually high contents of F (≤2.2 wt%), F + Cl (≤2.9 wt%) and ZrO 2 (≤1.04 wt%). The high halogen contents may have influenced the evolution of the strongly peralkaline magma. The crystallization conditions are poorly constrained but those for the pantelleritic magma may have been close to water-saturation (>4 wt% melt water) at temperatures ~740 °C and fO 2 around FMQ. 

AB - The Gold Flat Tuff is the youngest (9.15 Ma) ash-flow sheet erupted from the Black Mountain Volcanic Centre, southwest Nevada, USA. This paper explores some aspects of the very complex nature of the tuff's magmatic plumbing system. The main body of the deposit is a mixed magma product, comprising pantelleritic and comenditic melts derived from independently evolving reservoirs, and antecrysts and enclaves derived from a range of basic to intermediate sources. Metre-scale cognate xenoliths point to the presence of alkali feldspar accumulation zones. The pantellerite contains phenocrysts of fluorite and chevkinite-(Ce). The inferred intermediate magma component contains perrierite-(Ce) phenocrysts. The pantellerite has unusually high contents of F (≤2.2 wt%), F + Cl (≤2.9 wt%) and ZrO 2 (≤1.04 wt%). The high halogen contents may have influenced the evolution of the strongly peralkaline magma. The crystallization conditions are poorly constrained but those for the pantelleritic magma may have been close to water-saturation (>4 wt% melt water) at temperatures ~740 °C and fO 2 around FMQ. 

KW - Chevkinite-(Ce) phenocrysts

KW - Fluorite and

KW - Gold Flat Tuff

KW - Magma mixing

KW - Nevada

KW - Peralkaline rhyolites

KW - Topic:

KW - ash flow

KW - fluorite

KW - magma

KW - magmatism

KW - peralkaline rock

KW - phenocryst

KW - rhyolite

KW - United States

U2 - 10.1016/j.lithos.2019.01.017

DO - 10.1016/j.lithos.2019.01.017

M3 - Journal article

VL - 328-329

SP - 1

EP - 13

JO - Lithos

JF - Lithos

SN - 0024-4937

ER -