Geochemical and microstructural evidence for interseismic changes in fault zone permeability and strength, Alpine Fault, New Zealand

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • Carolyn Boulton
  • Catriona D Menzies
  • Virginia G Toy
  • John Townend
  • Rupert Sutherland
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000395186600015&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1002/2016GC006588
eISSN
1525-2027
Externe Identifier
  • Clarivate Analytics Document Solution ID: EM3AJ
Ausgabe der Veröffentlichung
1
Zeitschrift
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
Schlüsselwörter
  • Alpine Fault
  • New Zealand
  • fault rocks
  • alteration
  • mineralogy
  • geochemistry
  • microstructure
  • permeability
  • sealing
  • seismic cycle
Paginierung
238 - 265
Datum der Veröffentlichung
2017
Status
Published
Titel
Geochemical and microstructural evidence for interseismic changes in fault zone permeability and strength, Alpine Fault, New Zealand
Sub types
  • Article
Ausgabe der Zeitschrift
18

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>Oblique dextral motion on the central Alpine Fault in the last circa 5 Ma has exhumed garnet‐oligoclase facies mylonitic fault rocks from ∼35 km depth. During exhumation, deformation, accompanied by fluid infiltration, has generated complex lithological variations in fault‐related rocks retrieved during Deep Fault Drilling Project (DFDP‐1) drilling at Gaunt Creek, South Island, New Zealand. Lithological, geochemical, and mineralogical results reveal that the fault comprises a core of highly comminuted cataclasites and fault gouges bounded by a damage zone containing cataclasites, protocataclasites, and fractured mylonites. The fault core‐alteration zone extends ∼20–30 m from the principal slip zone (PSZ) and is characterized by alteration of primary phases to phyllosilicate minerals. Alteration associated with distinct mineral phases occurred proximal the brittle‐to‐plastic transition (T ≤ 300–400°C, 6–10 km depth) and at shallow depths (T = 20–150°C, 0–3 km depth). Within the fault core‐alteration zone, fractures have been sealed by precipitation of calcite and phyllosilicates. This sealing has decreased fault normal permeability and increased rock mass competency, potentially promoting interseismic strain buildup.</jats:p>
Autoren
  • Carolyn Boulton
  • Catriona D Menzies
  • Virginia G Toy
  • John Townend
  • Rupert Sutherland
DOI
10.1002/2016gc006588
eISSN
1525-2027
ISSN
1525-2027
Ausgabe der Veröffentlichung
1
Zeitschrift
Geochemistry, Geophysics, Geosystems
Sprache
en
Online publication date
2017
Paginierung
238 - 265
Datum der Veröffentlichung
2017
Status
Published
Herausgeber
American Geophysical Union (AGU)
Herausgeber URL
http://dx.doi.org/10.1002/2016gc006588
Datum der Datenerfassung
2023
Titel
Geochemical and microstructural evidence for interseismic changes in fault zone permeability and strength, <scp>A</scp>lpine <scp>F</scp>ault, <scp>N</scp>ew <scp>Z</scp>ealand
Ausgabe der Zeitschrift
18

Datenquelle: Crossref

Beziehungen:
Eigentum von

Werkzeuge