Slip localization on the southern Alpine Fault, New Zealand

Publikationstyp:
Zeitschriftenaufsatz
Metadaten:
Autoren
  • NC Barth
  • C Boulton
  • BM Carpenter
  • GE Batt
  • VG Toy
Autoren-URL
https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000322124300019&DestLinkType=FullRecord&DestApp=WOS_CPL
DOI
10.1002/tect.20041
eISSN
1944-9194
Externe Identifier
  • Clarivate Analytics Document Solution ID: 187MX
ISSN
0278-7407
Ausgabe der Veröffentlichung
3
Zeitschrift
TECTONICS
Schlüsselwörter
  • Alpine Fault
  • fault core
  • fault friction
  • New Zealand
  • strike-slip
  • plate boundary
Paginierung
620 - 640
Datum der Veröffentlichung
2013
Status
Published
Titel
Slip localization on the southern Alpine Fault, New Zealand
Sub types
  • Article
Ausgabe der Zeitschrift
32

Datenquelle: Web of Science (Lite)

Andere Metadatenquellen:
Abstract
<jats:title>Abstract</jats:title><jats:p>Results of a detailed field study of the southern onshore portion of New Zealand's Alpine Fault reveal that for 75 km along‐strike, dextral‐normal slip on this long‐lived structure is highly localized in phyllosilicate‐rich fault core gouges and along their contact with more competent rocks. At three localities (Martyr River, McKenzie Creek, and Hokuri Creek), we document complete cross sections through the fault. New<jats:sup>40</jats:sup>Ar/<jats:sup>39</jats:sup>Ar dates on mylonites, combined with microstructural and mechanical data on phyllosilicate‐rich fault core gouges show that modern slip is localized onto a single, steeply dipping 1 to 12 m‐thick fault core composed of impermeable (k = 10<jats:sup>−20</jats:sup>to 10<jats:sup>−22</jats:sup> m<jats:sup>2</jats:sup>), frictionally weak (μ<jats:sub>s</jats:sub> = 0.12–0.37), velocity‐strengthening, illite‐chlorite, and saponite‐chlorite‐lizardite fault gouges. Fault core materials are (1) comparable to those of other major weak‐cored faults (e.g., San Andreas Fault) and (2) most compatible with fault creep, despite paleoseismic evidence of quasiperiodic large magnitude earthquakes (<jats:italic>M<jats:sub>w</jats:sub></jats:italic> &gt; 7) on this portion of the Alpine Fault. We conclude that frictional properties of gouges at the surface do not characterize the overall seismogenic behavior of the southern Alpine Fault.</jats:p>
Autoren
  • NC Barth
  • C Boulton
  • BM Carpenter
  • GE Batt
  • VG Toy
DOI
10.1002/tect.20041
eISSN
1944-9194
ISSN
0278-7407
Ausgabe der Veröffentlichung
3
Zeitschrift
Tectonics
Sprache
en
Online publication date
2013
Paginierung
620 - 640
Datum der Veröffentlichung
2013
Status
Published
Herausgeber
American Geophysical Union (AGU)
Herausgeber URL
http://dx.doi.org/10.1002/tect.20041
Datum der Datenerfassung
2024
Titel
Slip localization on the southern Alpine Fault, New Zealand
Ausgabe der Zeitschrift
32

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