Cited by 505Geological and Geochemical AnalysisHigh-pressure geophysics and materialsGeological and Geophysical Studies Worldwide

H 2 O subduction beyond arcs

Hacker, Bradley R.·2008·Geochemistry Geophysics Geosystems

Abstract

The amount of H 2 O subducted to postarc depths dictates such disparate factors as the generation of arc and back‐arc magmas, the rheology of the mantle wedge and slab, and the global circulation of H 2 O. Perple_X was used to calculate phase diagrams and rock physical properties for pressures of 0.5–4.0 GPa and temperatures of 300–900°C for a range of bulk compositions appropriate to subduction zones. These data were merged with global subduction zone rock fluxes to generate a model for global H 2 O flux to postarc depths. For metasomatized igneous rocks, subducted H 2 O scales with bulk rock K 2 O in hot slabs. Metasomatized ultramafic rocks behave similarly in cold slabs, but in hot slabs carry no H 2 O to magma generation depths because they lack K 2 O. Chert and carbonate are responsible for minimal H 2 O subduction, whereas clay‐rich and terrigenous sediments stabilize several hydrous phases at low temperature, resulting in significant postarc slab H 2 O flux in cold and hot slabs. Continental crust also subducts much H 2 O in cold slabs because of the stability of lawsonite and phengite; in hot slabs it is phengite that carries the bulk of this H 2 O to postarc depth. All told, the postarc flux of H 2 O in cold slabs is dominated by terrigenous sediment and the igneous lower crust and mantle and is proportional to bulk rock H 2 O. In contrast, in hot slabs the major contributors of postarc slab H 2 O are metasomatized volcanic rocks and subducted continental crust, with the amount of postarc slab H 2 O scaling with K 2 O. The Andes and Java‐Sumatra‐Andaman slabs are the principal suppliers of pelagic and terrigenous sediment hosted H 2 O to postarc depths, respectively. The Chile and Solomon arcs contribute the greatest H 2 O flux from subducted continental and oceanic forearc, respectively. The Andean arc has the greatest H 2 O flux provided through subduction of hydrated ocean crust and mantle. No correlation was observed between postarc slab H 2 O flux and slab seismicity.

Integrity signals

Registry

Crossref · 10.1029/2007gc001707

Cites

85 of 85 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Using realistic, subduction-zone-specific models with high-resolution temperature distributions yields significantly more robust predictions of temperature, mineralogy, and H2O content than those of Hacker [2008].

    “The use of more realistic and subduction zone specific models combined with the highresolution temperature distribution in the slab contributes to significantly more robust predictions of temperature, and therefore of the mineralogy and H 2 O content, than those used by Hacker [2008].”

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Hacker, B. R.
Affiliations
University of California, Santa Barbara (US)
Corresponding author
Hacker, Bradley R.
Venue
Geochemistry Geophysics Geosystems
Published
2008-03
Volume
9
Issue
3
ISSN
1525-2027 (ISSN-L)
OpenAlex
W2115218846
Cited by
505
References
85
Citations by year
2026: 24 · 2025: 31 · 2024: 30 · 2023: 36 · 2022: 42 · 2021: 35 · 2020: 32 · 2019: 25 · 2018: 22 · 2017: 32 · 2016: 27 · 2015: 34 · 2014: 35 · 2013: 33 · 2012: 26
FWCI
12.31
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 › Geophysics › High-pressure geophysics and materials
  • Physical Sciences › Earth and Planetary Sciences › Geophysics › Geological and Geophysical Studies Worldwide
Keywords
subduction zone, terrigenous sediments, clay-rich sediments, chert, carbonates, continental subduction, lawsonite, phengite, potassium oxide, arc magmatism, back-arc magmatism, Andes

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review