Identification of multiple generations of crosscutting "domino- style' faults: insights from seismic modeling

J. C. Yarnold, Roy A Johnson, L. S. Sorenson

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Seismic modeling and geometric analysis provide clues for identification of multiple generations of cross-cutting planar rotational faults in seismic reflection profiles. Many elements characteristic of this structural geometry are apparent, although contorted, at shallow levels in unmigrated and migrated synthetic seismograms. Structural features potentially signaling an earlier generation of rotational faulting within a tilt-block terrain include first-generation fault segments, intrablock terminations of horizons, steep dips of prefault strata, anomalously high fault-strata intersection angles, "composite' basin geometry, truncations of early synextension sedimentary wedges, and anomalous crustal thinning. Evaluation of published profiles from the Bay of Biscay and Galicia Bank indicates that the crosscutting "domino' fault model probably is not applicable in these areas as previously suggested. While the model may be appropriate for the basement structure of Spring Valley, Nevada, seismic evidence is equivocal. -Authors

Original languageEnglish (US)
Pages (from-to)159-168
Number of pages10
JournalTectonics
Volume12
Issue number1
StatePublished - 1993
Externally publishedYes

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strata
Faulting
Geometry
Catchments
modeling
seismograms
profiles
geometry
basements
intersections
wedges
crustal thinning
horizon
valleys
synthetic seismogram
Composite materials
tilt
seismic reflection
dip
faulting

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Identification of multiple generations of crosscutting "domino- style' faults : insights from seismic modeling. / Yarnold, J. C.; Johnson, Roy A; Sorenson, L. S.

In: Tectonics, Vol. 12, No. 1, 1993, p. 159-168.

Research output: Contribution to journalArticle

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