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Tectonic controls on magma storage beneath a distributed volcanic field.

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Title: Tectonic controls on magma storage beneath a distributed volcanic field.
Authors: Porter, Ryan1 Ryan.Porter@nau.edu, Kiser, Eric2, Reid, Mary R.1
Source: Geology. Apr2026, Vol. 54 Issue 4, p317-321. 5p.
Subject Terms: *Volcanic fields, *Magmas, *Imaging systems in seismology, *Volcanism, *Structural geology
Geographic Terms: Arizona
Abstract: Distributed volcanic fields occur globally, but the processes that control volcanic composition and behavior remain uncertain. To investigate the controls on eruptive style, melt storage, and hazards in a system with voluminous mafic and intermediate and/or silicic lavas, we seismically imaged the subsurface beneath the San Francisco volcanic field in northern Arizona (USA). Results reveal two partial melt zones and regional changes in crustal thickness, related to lower crustal removal. San Francisco Mountain, a felsic stratovolcano, is located atop a boundary between intact and removed crust. This lateral boundary in lithospheric properties concentrates melt into mid- and lower-crustal reservoirs, enabling felsic volcanism in this dominantly basaltic field. This demonstrates how lateral lithospheric gradients focus melt in distributed volcanic fields, with removal playing a key role in creating these gradients. [ABSTRACT FROM AUTHOR]
Database: Energy & Power Source
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  Availability: 0
Header DbId: enr
DbLabel: Energy & Power Source
An: 192913034
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Tectonic controls on magma storage beneath a distributed volcanic field.
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  Data: <searchLink fieldCode="AR" term="%22Porter%2C+Ryan%22">Porter, Ryan</searchLink><relatesTo>1</relatesTo><i> Ryan.Porter@nau.edu</i><br /><searchLink fieldCode="AR" term="%22Kiser%2C+Eric%22">Kiser, Eric</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Reid%2C+Mary+R%2E%22">Reid, Mary R.</searchLink><relatesTo>1</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Geology%22">Geology</searchLink>. Apr2026, Vol. 54 Issue 4, p317-321. 5p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Volcanic+fields%22">Volcanic fields</searchLink><br />*<searchLink fieldCode="DE" term="%22Magmas%22">Magmas</searchLink><br />*<searchLink fieldCode="DE" term="%22Imaging+systems+in+seismology%22">Imaging systems in seismology</searchLink><br />*<searchLink fieldCode="DE" term="%22Volcanism%22">Volcanism</searchLink><br />*<searchLink fieldCode="DE" term="%22Structural+geology%22">Structural geology</searchLink>
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  Label: Geographic Terms
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  Data: <searchLink fieldCode="DE" term="%22Arizona%22">Arizona</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Distributed volcanic fields occur globally, but the processes that control volcanic composition and behavior remain uncertain. To investigate the controls on eruptive style, melt storage, and hazards in a system with voluminous mafic and intermediate and/or silicic lavas, we seismically imaged the subsurface beneath the San Francisco volcanic field in northern Arizona (USA). Results reveal two partial melt zones and regional changes in crustal thickness, related to lower crustal removal. San Francisco Mountain, a felsic stratovolcano, is located atop a boundary between intact and removed crust. This lateral boundary in lithospheric properties concentrates melt into mid- and lower-crustal reservoirs, enabling felsic volcanism in this dominantly basaltic field. This demonstrates how lateral lithospheric gradients focus melt in distributed volcanic fields, with removal playing a key role in creating these gradients. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=192913034
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1130/G54058.1
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 317
    Subjects:
      – SubjectFull: Volcanic fields
        Type: general
      – SubjectFull: Magmas
        Type: general
      – SubjectFull: Imaging systems in seismology
        Type: general
      – SubjectFull: Volcanism
        Type: general
      – SubjectFull: Structural geology
        Type: general
      – SubjectFull: Arizona
        Type: general
    Titles:
      – TitleFull: Tectonic controls on magma storage beneath a distributed volcanic field.
        Type: main
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            NameFull: Porter, Ryan
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            NameFull: Kiser, Eric
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            NameFull: Reid, Mary R.
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            – D: 01
              M: 04
              Text: Apr2026
              Type: published
              Y: 2026
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              Value: 54
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              Value: 4
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            – TitleFull: Geology
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