A linkage criterion for segmented normal faults

Soliva, Roger; Benedicto, Antonio

doi:10.1016/j.jsg.2004.06.008

Cited by 174 publications

(110 citation statements)

References 51 publications

Supporting

Mentioning

100

Contrasting

Unclassified

Order By: Relevance

“…They then increase in throw until a throw maximum is reached at the abutting tip and a throw minimum at the isolated tip (stages 3 and 4; Figure 14). Each stage is analogous to different stages of fault growth by segment linkage in the sense that the throw profile changes from an individual fault at stage 1, to a geometrically linked fault at stages 2 and 3, to a kinematically linked abutting fault at stage 4 (compare Soliva and Benedicto, 2004).…”

Section: Abutting Faults and Trailing Abutmentsmentioning

confidence: 99%

Fault interactions and reactivation within a normal-fault network at Milne Point, Alaska

Nixon¹,

Sanderson²,

Dee³

et al. 2014

Bulletin

View full text Add to dashboard Cite

A normal-fault network from Milne Point, Alaska, is investigated focusing on characterizing geometry, displacement, strain, and different fault interactions. The network, constrained from threedimensional seismic reflection data, comprises two generations of faults: Cenozoic north-northeast-trending faults and Jurassic west-northwest-trending faults, which highly compartmentalize Upper Triassic to Lower Cretaceous reservoirs. The west-northwest-trending faults are influenced by a similarly oriented underlying structural grain. This influence is characterized by increases in throw on several faults, strain localization, reorientation of faults and an increase in linkage maturity.Reconstructing fault plane geometries and mapping spatial variations in throw identified key characteristic features in their interactions and reactivation of pre-existing structures. Faults are divided into isolated, abutting, and splaying faults. Isolated faults exhibit a range of displacement profiles depending on the degree of restriction at fault tips. Fault splays accommodate step-like decreases in throw along larger main faults with a throw maximum at the intersection with the main fault. Throw profiles of abutting faults are divided into two groups: early stage abutting faults with throw minima at both the isolated and abutting tips, and developed abutting faults with throw maxima near the abutting tip.Developed abutting faults accumulate throw after initial abutment, locally reactivating and transferring throw onto the preexisting fault. Two abutting faults can link kinematically by Stephen Dee is a senior structural geologist at BP, working in the Integrated Subsurface Description and Modelling team and consulting on structural and geomechanics projects. He has a Ph.D. from the University of Southampton and specializes in fault and fracture interpretation, geomechanical modeling, and seal analysis.

show abstract

Section: Abutting Faults and Trailing Abutmentsmentioning

confidence: 99%

Fault interactions and reactivation within a normal-fault network at Milne Point, Alaska

Nixon¹,

Sanderson²,

Dee³

et al. 2014

Bulletin

View full text Add to dashboard Cite

show abstract

“…Damage zones have a strong influence on fault permeability, depending on fractures aperture, density, connectivity, and cementation [35][36][37][38]. These properties may vary along fault according to the fault architecture, that is, intersections of fractured damage zones [39][40][41] or fault segmentation [37,42,43]. The fault constitution and the fracture network also evolve with time, as potential mineralized fluids may corrode or seal permeable structures, respectively, enhancing or reducing the permeability.…”

Section: Introductionmentioning

confidence: 99%

Fault-Related Controls on Upward Hydrothermal Flow: An Integrated Geological Study of the Têt Fault System, Eastern Pyrénées (France)

et al. 2017

Self Cite

View full text Add to dashboard Cite

The way faults control upward fluid flow in nonmagmatic hydrothermal systems in extensional context is still unclear. In the Eastern Pyrénées, an alignment of twenty-nine hot springs (29 ∘ C to 73 ∘ C), along the normal Têt fault, offers the opportunity to study this process. Using an integrated multiscale geological approach including mapping, remote sensing, and macro-and microscopic analyses of fault zones, we show that emergence is always located in crystalline rocks at gneiss-metasediments contacts, mostly in the Têt fault footwall. The hot springs distribution is related to high topographic reliefs, which are associated with fault throw and segmentation. In more detail, emergence localizes either (1) in brittle fault damage zones at the intersection between the Têt fault and subsidiary faults or (2) in ductile faults where dissolution cavities are observed along foliations, allowing juxtaposition of metasediments. Using these observations and 2D simple numerical simulation, we propose a hydrogeological model of upward hydrothermal flow. Meteoric fluids, infiltrated at high elevation in the fault footwall relief, get warmer at depth because of the geothermal gradient. Topography-related hydraulic gradient and buoyancy forces cause hot fluid rise along permeability anisotropies associated with lithological juxtapositions, fracture, and fault zone compositions.

show abstract

“…Relay displacement (Dr), which is the sum of displacement of each fault segment at tip zone, and fault segment separation (S) are measured on the relay ramp on a line normal to the ramp strike and at the centre of the overlap (or underlap) length. The results are presented on None of the studied relay zones display characteristics of fully breaching since they need to display values of Dr/S from a minimum of 0.8 to 1< (see also Soliva and Benedicto, 2004).…”

Section: Relay Zones' Geometrymentioning

confidence: 99%

“…Breaching occurs when the fault segments are replaced by a single, through-going fault surface. Interaction and linkage between fracture segments have been studied in regimes of thrust and strike-slip faulting (Aydin and Schultz, 1990;Segall and Pollard, 1980;) and more recently between segments of extension fractures and normal faults in continental areas (Childs et al 1995;Acocella et al, 2000;Soliva and Benedicto;. All past works aimed to improve comprehension of mechanical interaction and linkage processes between faults, including the effects on scaling laws and growth models of faults as well as in fault size and spatial distribution.…”

Section: Introductionmentioning

confidence: 99%

Segmentation and Interaction of Normal Faults in Central Greece

Κοκκάλας

2017

geosociety

View full text Add to dashboard Cite

The aim of this study is to improve our understanding on the mechanical interaction and linkage process between normal fault segments. Faults grow by the process of radial propagation and the linkage of segments, as strain increases, evolving to large fault systems. For this purpose we conducted a combined field and photogeological study on two major segmented fault zones in Central Greece, the Atalanti and Arkitsa fault zones. This approach includes effects of fault size and spatial distribution, scaling laws and footwall-hanginwall topography. Throw distribution and the geometry of the segmented fault arrays were analyzed in order to investigate the complexity of fault zones, the fault linkage process and the geometric characteristics of the relay zones formed between individual segments. The correlation of fault throw with fault length (D-L) and the ratios of overlap-separation (OL-S), separation-fault segment length (S-L) and relay displacement vs. separation (Dr-S)were examined in order to give an insight for fault segment interaction and linkage .

show abstract

A linkage criterion for segmented normal faults

Cited by 174 publications

References 51 publications

Fault interactions and reactivation within a normal-fault network at Milne Point, Alaska

Fault interactions and reactivation within a normal-fault network at Milne Point, Alaska

Fault-Related Controls on Upward Hydrothermal Flow: An Integrated Geological Study of the Têt Fault System, Eastern Pyrénées (France)

Segmentation and Interaction of Normal Faults in Central Greece

Contact Info

Product

Resources

About