Magmatism controls global oceanic transform fault topography

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Abstract
<jats:title>Abstract</jats:title><jats:p>Oceanic transform faults play an essential role in plate tectonics. Yet to date, there is no unifying explanation for the global trend in broad-scale transform fault topography, ranging from deep valleys to shallow topographic highs. Using three-dimensional numerical models, we find that spreading-rate dependent magmatism within the transform domain exerts a first-order control on the observed spectrum of transform fault depths. Low-rate magmatism results in deep transform valleys caused by transform-parallel tectonic stretching; intermediate-rate magmatism fully accommodates far-field stretching, but strike-slip motion induces across-transform tension, producing transform strength dependent shallow valleys; high-rate magmatism produces elevated transform zones due to local compression. Our models also address the observation that fracture zones are consistently shallower than their adjacent transform fault zones. These results suggest that plate motion change is not a necessary condition for reproducing oceanic transform topography and that oceanic transform faults are not simple conservative strike-slip plate boundaries.</jats:p>
Autoren
  • Xiaochuan Tian
  • Mark D Behn
  • Garrett Ito
  • Jana C Schierjott
  • Boris JP Kaus
  • Anton A Popov
DOI
10.1038/s41467-024-46197-9
eISSN
2041-1723
Ausgabe der Veröffentlichung
1
Zeitschrift
Nature Communications
Sprache
en
Artikelnummer
1914
Online publication date
2024
Status
Published online
Herausgeber
Springer Science and Business Media LLC
Herausgeber URL
http://dx.doi.org/10.1038/s41467-024-46197-9
Datum der Datenerfassung
2024
Titel
Magmatism controls global oceanic transform fault topography
Ausgabe der Zeitschrift
15

Datenquelle: Crossref

Andere Metadatenquellen:
Abstract
Oceanic transform faults play an essential role in plate tectonics. Yet to date, there is no unifying explanation for the global trend in broad-scale transform fault topography, ranging from deep valleys to shallow topographic highs. Using three-dimensional numerical models, we find that spreading-rate dependent magmatism within the transform domain exerts a first-order control on the observed spectrum of transform fault depths. Low-rate magmatism results in deep transform valleys caused by transform-parallel tectonic stretching; intermediate-rate magmatism fully accommodates far-field stretching, but strike-slip motion induces across-transform tension, producing transform strength dependent shallow valleys; high-rate magmatism produces elevated transform zones due to local compression. Our models also address the observation that fracture zones are consistently shallower than their adjacent transform fault zones. These results suggest that plate motion change is not a necessary condition for reproducing oceanic transform topography and that oceanic transform faults are not simple conservative strike-slip plate boundaries.
Addresses
  • Department of Earth and Environmental Sciences, Boston College, Chestnut Hill, MA, USA. x.tian@bc.edu.
Autoren
  • Xiaochuan Tian
  • Mark D Behn
  • Garrett Ito
  • Jana C Schierjott
  • Boris JP Kaus
  • Anton A Popov
DOI
10.1038/s41467-024-46197-9
eISSN
2041-1723
Externe Identifier
  • PubMed Identifier: 38429287
  • PubMed Central ID: PMC10907720
Funding acknowledgements
  • National Science Foundation (NSF): NSF-OCE #19-28776
  • European Research Council: ERC CoG MAGMA #771143
  • European Research Council: 771143
  • National Science Foundation (NSF): NSF-OCE #19-28804
Open access
true
ISSN
2041-1723
Ausgabe der Veröffentlichung
1
Zeitschrift
Nature communications
Sprache
eng
Medium
Electronic
Online publication date
2024
Open access status
Open Access
Paginierung
1914
Datum der Veröffentlichung
2024
Status
Published
Publisher licence
CC BY
Datum der Datenerfassung
2024
Titel
Magmatism controls global oceanic transform fault topography.
Sub types
  • research-article
  • Journal Article
Ausgabe der Zeitschrift
15

Files

https://www.nature.com/articles/s41467-024-46197-9.pdf https://europepmc.org/articles/PMC10907720?pdf=render

Datenquelle: Europe PubMed Central

Abstract
Oceanic transform faults play an essential role in plate tectonics. Yet to date, there is no unifying explanation for the global trend in broad-scale transform fault topography, ranging from deep valleys to shallow topographic highs. Using three-dimensional numerical models, we find that spreading-rate dependent magmatism within the transform domain exerts a first-order control on the observed spectrum of transform fault depths. Low-rate magmatism results in deep transform valleys caused by transform-parallel tectonic stretching; intermediate-rate magmatism fully accommodates far-field stretching, but strike-slip motion induces across-transform tension, producing transform strength dependent shallow valleys; high-rate magmatism produces elevated transform zones due to local compression. Our models also address the observation that fracture zones are consistently shallower than their adjacent transform fault zones. These results suggest that plate motion change is not a necessary condition for reproducing oceanic transform topography and that oceanic transform faults are not simple conservative strike-slip plate boundaries.
Date of acceptance
2024
Autoren
  • Xiaochuan Tian
  • Mark D Behn
  • Garrett Ito
  • Jana C Schierjott
  • Boris JP Kaus
  • Anton A Popov
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/38429287
DOI
10.1038/s41467-024-46197-9
eISSN
2041-1723
Externe Identifier
  • PubMed Central ID: PMC10907720
Funding acknowledgements
  • National Science Foundation (NSF): NSF-OCE #19-28776
  • National Science Foundation (NSF): NSF-OCE #19-28776
  • National Science Foundation (NSF): NSF-OCE #19-28804
  • National Science Foundation (NSF): NSF-OCE #19-28804
  • EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council): ERC CoG MAGMA #771143
  • EC | EU Framework Programme for Research and Innovation H2020 | H2020 Priority Excellent Science | H2020 European Research Council (H2020 Excellent Science - European Research Council): ERC CoG MAGMA #771143
Ausgabe der Veröffentlichung
1
Zeitschrift
Nat Commun
Sprache
eng
Country
England
Paginierung
1914
PII
10.1038/s41467-024-46197-9
Datum der Veröffentlichung
2024
Status
Published online
Titel
Magmatism controls global oceanic transform fault topography.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
15

Datenquelle: PubMed

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