Cited by 542Geological and Geochemical AnalysisGeological and Geophysical StudiesGeochemistry and Elemental Analysis

Birth, death, and resurrection: The life cycle of suprasubduction zone ophiolites

Shervais, John W.·2001·Geochemistry, Geophysics, Geosystems

Abstract

Suprasubduction zone (SSZ) ophiolites display a consistent sequence of events during their formation and evolution that suggests that they form in response to processes that are common to all such ophiolites. This sequence includes the following: (1) birth, which entails the formation of the ophiolite above a nascent or reconfigured subduction zone; this stage is typically characterized by the eruption of arc tholeiite lavas and the formation of layered gabbros and sheeted dike complex; (2) youth, during which is continued melting of refractory asthenosphere (depleted during birth) occurs in response to fluid flux from the subducting slab, with extensional deformation of the older plutonic suite, eruption of refractory lavas, and the intrusion of wehrlite‐pyroxenite; (3) maturity, with the onset of semistable arc volcanism, typically calc‐alkaline, as the subduction zone matures and stabilizes, and the intrusion of quartz diorite and eruption of silicic lavas; and (4) death, which is the sudden demise of active spreading and ophiolite‐related volcanism, which in many cases is linked to collision with an active spreading center and the onset of shallow underthrusting of the buoyant spreading axis; expressed as dikes and lavas with oceanic basalt compositions that crosscut or overlie rocks of the older suites; (5) resurrection, with emplacement by obduction onto a passive margin or accretionary uplift with continued subduction. The early stages (1–3) may be diachronous, and each stage may overlap in both time and space. The existence of this consistent progression implies that ophiolite formation is not a stochastic event but is a natural consequence of the SSZ tectonic setting.

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Crossref · 10.1029/2000gc000080

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  • Supercontinent formation requires the lateral accretion of formerly separate lithospheric terranes, which is facilitated today by seafloor spreading and concomitant destruction of intermediate oceanic lithosphere in subduction zones.

    “Supercontinent formation (Section 3.2.4)requires the lateral accretion of formerly separate lithospheric terranes, which is facilitated today by seafloor spreading and concomitant destruction of intermediate oceanic lithosphere in subduction zones (Shervais, 2001;Harris, 2020).”

    From Secular change and the onset of plate tectonics on Earth (2020) · cites this paper as Shervais, 2001

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Authors
Shervais, J. W.
Affiliations
University of South Carolina (US)
Corresponding author
Shervais, John W.
Venue
Geochemistry, Geophysics, Geosystems
Published
2001-01
Volume
2
Issue
1
ISSN
1525-2027 (ISSN-L)
OpenAlex
W1654749589
Cited by
542
References
225
Citations by year
2026: 12 · 2025: 20 · 2024: 20 · 2023: 25 · 2022: 27 · 2021: 29 · 2020: 33 · 2019: 28 · 2018: 26 · 2017: 26 · 2016: 30 · 2015: 18 · 2014: 22 · 2013: 31 · 2012: 26
FWCI
12.64
Type
journal article
Language
en
Open access
closed
Locations
Geochemistry Geophysics Geosystems (publishedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geochemical Analysis
  • Physical Sciences › Earth and Planetary Sciences › Geology › Geological and Geophysical Studies
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
Keywords
subduction initiation, arc tholeiite, quartz diorite, calc-alkaline volcanism, obduction, layered gabbro, sheeted dike complex

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