Results 161 to 170 of about 577,107 (210)

Dilational normal faults

Journal of Structural Geology, 2003
Abstract At low differential effective stress and with minimum principal effective stress near zero or tensile, rocks fail in several modes and with variable failure angles. Under these conditions mechanical stratigraphy exerts a significant influence on initial dip of normal faults.
David A. Ferrill, Alan P. Morris
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Normal faults, normal friction?

Geology, 2001
Debate continues as to whether normal faults may be seismically active at very low dips (d , 308) in the upper continental crust. An updated compilation of dip estimates (n 5 25) has been prepared from focal mechanisms of shallow, intracontinental, normal-slip earthquakes (M .
COLLETTINI, CRISTIANO, Sibson, Richard H.   +1 more
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Myths about normal faulting

Geological Society, London, Special Publications, 2016
Abstract Analyses of normal faults in mechanically layered strata reveal that material properties of rock layers strongly influence fault nucleation points, fault extent (trace length), failure mode (shear v. hybrid), fault geometry (e.g.
D. A. Ferrill, A. P. Morris, R. N. McGinnis, K. J. Smart   +3 more
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Normal fault corrugation: implications for growth and seismicity of active normal faults

Journal of Structural Geology, 1999
Abstract Large normal faults are corrugated. Corrugations appear to form from overlapping or en echelon fault arrays by two breakthrough mechanisms: lateral propagation of curved fault-tips and linkage by connecting faults. Both mechanisms include localized fault-parallel extension and eventual abandonment of relay ramps.
David A Ferrill, John A Stamatakos, Darrell Sims   +2 more
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Fault overlap zones within developing normal fault systems

Journal of the Geological Society, 1995
Overlap zones between normal faults have been studied using a variety of 2D and 3D seismic reflection datasets. The overlaps are of two types, (i) relay zones in which displacement is transferred between the overlapping faults and (ii) non-relay overlaps in which displacement is not transferred.
C. CHILDS, J. WATTERSON, J. J. WALSH
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Anticlustering of small normal faults around larger faults

Geology, 1997
The Solite quarry in the Mesozoic Danville rift basin contains normal faults that conform to two spatial and size distributions. Larger master normal faults (20 cm < length [ L] < 200 cm) are not numerous and have spanned the mechanical layer. The other faults are numerous, small (~0.1 cm < L < 20 cm), and exhibit anticlustering with respect to the ...
Rolf V. Ackermann, Roy W. Schlische
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Displacement rates of normal faults

Nature, 1997
Previous estimates of displacement rates on individual faults have been limited to neotectonic faults and averaged over time intervals of about 200 kyr or less1,2,3,4,5. These estimates have been highly variable, which has led to a belief that longer-term displacement rates on individual faults are likely to be variable as well.
A. Nicol‡, J. J. Walsh, J. Watterson, J. R. Underhill   +3 more
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Fault reactivation control on normal fault growth: an experimental study

Journal of Structural Geology, 2005
Field studies frequently emphasize how fault reactivation is involved in the deformation of the upper crust. However, this phenomenon is generally neglected (except in inversion models) in analogue and numerical models performed to study fault network growth.
Bellahsen, Nicolas, Daniel, J.M.
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The geometry of normal faults

Journal of the Geological Society, 1990
This meeting took place at Burlington House on 14 and 15 June 1989. Until recently a specialist structural geology meeting on a theme such as this would have been solely the preserve of the Tectonic Studies Group.
ALAN ROBERTS, GRAHAM YIELDING, BRETT FREEMAN   +2 more
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Mechanical stratigraphy and normal faulting

Journal of Structural Geology, 2017
Abstract Mechanical stratigraphy encompasses the mechanical properties, thicknesses, and interface properties of rock units. Although mechanical stratigraphy often relates directly to lithostratigraphy, lithologic description alone does not adequately describe mechanical behavior. Analyses of normal faults with displacements of millimeters to 10's of
David A. Ferrill, Alan P. Morris, Ronald N. McGinnis, Kevin J. Smart, Sarah S. Wigginton, Nicola J. Hill   +5 more
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