Postseismic mantle relaxation in the Central Nevada Seismic Belt

N Gourmelen; F Amelung

doi:10.1126/science.1119798

Postseismic mantle relaxation in the Central Nevada Seismic Belt

N Gourmelen^*, F Amelung

^*Corresponding author for this work

School of Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract

Holocene acceleration of deformation and postseismic relaxation are two hypotheses to explain the present-day deformation in the Central Nevada Seismic Belt (CNSB). Discriminating between these two mechanisms is critical for understanding the dynamics and seismic potential of the Basin and Range province. Interferometric synthetic aperture radar detected a broad area of uplift (2 to 3 millimeters per year) that can be explained by postseismic mantle relaxation after a sequence of large crustal earthquakes from 1915 to 1954. The results lead to a broad agreement between geologic and geodetic strain indicators and support a model of a rigid Basin and Range between the CNSB and the Wasatch fault.

Original language	English
Pages (from-to)	1473-1476
Number of pages	4
Journal	Science
Volume	310
Issue number	5753
DOIs	https://doi.org/10.1126/science.1119798
Publication status	Published - 2 Dec 2005

Keywords

PEAK-DIXIE VALLEY
EARTHQUAKE SEQUENCE
DEFORMATION
BASIN
VISCOSITY
RHEOLOGY
AREA

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10.1126/science.1119798

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title = "Postseismic mantle relaxation in the Central Nevada Seismic Belt",

abstract = "Holocene acceleration of deformation and postseismic relaxation are two hypotheses to explain the present-day deformation in the Central Nevada Seismic Belt (CNSB). Discriminating between these two mechanisms is critical for understanding the dynamics and seismic potential of the Basin and Range province. Interferometric synthetic aperture radar detected a broad area of uplift (2 to 3 millimeters per year) that can be explained by postseismic mantle relaxation after a sequence of large crustal earthquakes from 1915 to 1954. The results lead to a broad agreement between geologic and geodetic strain indicators and support a model of a rigid Basin and Range between the CNSB and the Wasatch fault.",

keywords = "PEAK-DIXIE VALLEY, EARTHQUAKE SEQUENCE, DEFORMATION, BASIN, VISCOSITY, RHEOLOGY, AREA",

author = "N Gourmelen and F Amelung",

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AU - Gourmelen, N

AU - Amelung, F

PY - 2005/12/2

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N2 - Holocene acceleration of deformation and postseismic relaxation are two hypotheses to explain the present-day deformation in the Central Nevada Seismic Belt (CNSB). Discriminating between these two mechanisms is critical for understanding the dynamics and seismic potential of the Basin and Range province. Interferometric synthetic aperture radar detected a broad area of uplift (2 to 3 millimeters per year) that can be explained by postseismic mantle relaxation after a sequence of large crustal earthquakes from 1915 to 1954. The results lead to a broad agreement between geologic and geodetic strain indicators and support a model of a rigid Basin and Range between the CNSB and the Wasatch fault.

AB - Holocene acceleration of deformation and postseismic relaxation are two hypotheses to explain the present-day deformation in the Central Nevada Seismic Belt (CNSB). Discriminating between these two mechanisms is critical for understanding the dynamics and seismic potential of the Basin and Range province. Interferometric synthetic aperture radar detected a broad area of uplift (2 to 3 millimeters per year) that can be explained by postseismic mantle relaxation after a sequence of large crustal earthquakes from 1915 to 1954. The results lead to a broad agreement between geologic and geodetic strain indicators and support a model of a rigid Basin and Range between the CNSB and the Wasatch fault.

KW - PEAK-DIXIE VALLEY

KW - EARTHQUAKE SEQUENCE

KW - DEFORMATION

KW - BASIN

KW - VISCOSITY

KW - RHEOLOGY

KW - AREA

U2 - 10.1126/science.1119798

DO - 10.1126/science.1119798

M3 - Article

VL - 310

SP - 1473

EP - 1476

JO - Science

JF - Science

SN - 0036-8075

IS - 5753

ER -

Postseismic mantle relaxation in the Central Nevada Seismic Belt

Abstract

Keywords

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