The Dead Sea Transform: Evidence for a Strong Fault?

Janssen, C.; Romer, Rolf L.; Hoffmann‐Rothe, A.; Kesten, D.; Al‐Zubi, H.

doi:10.1086/422666

Cited by 19 publications

(46 citation statements)

References 56 publications

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“…Estimates of faulting conditions and the depth of faulting recorded in the exposure studied are not definitive. Janssen et al (2004) use microstructures to argue that the uplifted Campanian-Turonian limestones were deformed at depth of 2-5 km. However, regional uplift and stratigraphic thickness indicate faulting depth of 1 to 2 km (Wdowinski and Zilberman, 1997;DESERT, 2004;see discussion).…”

Section: Local Settingmentioning

confidence: 99%

“…3e). In the southern Arava Valley (study area B), brittle fault damage forms a zone up to 300 m wide (Janssen et al 2004). Highresolution seismic investigations characterize the shallow part of the AF as a rather broad (100 -300 m wide) heterogeneous zone of deformed and displaced material (Haberland et al, 2007).…”

Section: Fault Architecture and Fault Zone Charactermentioning

confidence: 99%

“…Eyal et al, 1981;Eyal and Reches, 1983;Eyal, 1996;Eyal at al., 2001). Kinematic analyses on outcrop scale are less frequent and are mostly located along the AF and GF segments (Matar and Mascle, 1993;Zanchi et al, 2002;Diabat et al, 2004;Janssen et al, 2004;Chorowicz et al, 2005). The following reviews new and published kinematic data.…”

Section: Fault Kinematicsmentioning

confidence: 99%

“…7a-c are a combination of previously published data (AF; Janssen et al 2004) and new data (SF and GF).…”

Section: Microstructural Analysismentioning

confidence: 99%

“…Using these results, the DST can be qualitatively compared to other major strike-slip faults (e.g., Ritter et al, 2003;Haberland et al, 2003;Janssen et al, 2004;DESERT 2004).…”

mentioning

confidence: 99%

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Different styles of faulting deformation along the Dead Sea Transform and possible consequences for the recurrence of major earthquakes

Janssen¹,

Hoffmann‐Rothe²,

Bohnhoff³

et al. 2007

Journal of Geodynamics

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We compare fault-related deformation of three segments of the major transform plate boundary between Africa and the Arabian plate, the Dead Sea Transform (DST), namely: the Arava/Araba fault (Jordan/Israel), the Serghaya fault and the Ghab fault (both Syria). These segments show both similarities and marked differences in faulting deformation and fluid-rock interactions. In the case of the Arava fault, fault damage occurs across a zone up to 300 m wide. A fault core/gouge zone is not exhibited.Along the Serghaya fault, the typical fault zone architecture with a main gouge zone and a damage zone of up to 100 m thickness is exposed. Effects of faulting in the Ghab segment are shown by subsidiary faults and the formation of fault breccias. As in the Arava fault segment, a fault core is not exposed. were active along Serghaya fault and Ghab fault, where fault rock cementation led to * Corresponding author. Fax: +49-331-288-1328, E-mail address: jans@gfz-potsdam.de 2 porosity reduction and lower permeability. Such low permeability could create domains of higher pore fluid pressure, which reduce the effective shear stress required for slip on the fault. These differences in fluid-rock interactions may have played an important role with respect to the occurrence of earthquakes. We suggest that the recurrence interval on a fault segment that recovers after an earthquake without fluid assisted healing (e.g. Arava fault) should be longer than on segments with strong fluidassisted healing (cementation; e.g. Serghaya fault, Ghab fault), given that the regional stress field is the same.

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Section: Local Settingmentioning

confidence: 99%

Section: Fault Architecture and Fault Zone Charactermentioning

confidence: 99%

Section: Fault Kinematicsmentioning

confidence: 99%

“…7a-c are a combination of previously published data (AF; Janssen et al 2004) and new data (SF and GF).…”

Section: Microstructural Analysismentioning

confidence: 99%

“…Using these results, the DST can be qualitatively compared to other major strike-slip faults (e.g., Ritter et al, 2003;Haberland et al, 2003;Janssen et al, 2004;DESERT 2004).…”

mentioning

confidence: 99%

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Different styles of faulting deformation along the Dead Sea Transform and possible consequences for the recurrence of major earthquakes

Janssen¹,

Hoffmann‐Rothe²,

Bohnhoff³

et al. 2007

Journal of Geodynamics

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Applications of Hilbert transform and Newton's root finding algorithm in delineating buried fracture from magnetic anomaly data

Roy¹

2021

Near Surface Geophysics

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I propose a simple and sufficiently robust data‐based semi‐automated interpretation of a total magnetic intensity profile to delineate an isolated fracture or a fractured zone embedded within a homogeneous host medium. The interpretation technique, which is based on the premise of induced magnetization, uses a model of a thin, two‐dimensional dipping sheet embedded in a homogeneous half‐space. The proposed quantitative interpretation uses a set of closed form formulae in delineating model parameters; in those the Hilbert transform, the first‐ and second‐order derivatives of the local amplitude of the zero‐order analytical signal are the essential components. The locations of zero crossings of the first‐ and second‐order derivatives of analytical signal and the Hilbert transform remain the essential keys in estimating structural parameters of the model. The magnetic susceptibility contrast is delineated from the peak amplitude of the analytical signal. An appropriately designed Savitzky–Golay derivative filter and Hilbert–Noda transformation matrix are used as robust and efficient data‐processing tools. An additional tool, Newton's root finding algorithm, is proposed for locating the zero crossings. The reconstructed data fit is validated using a statistical appraisal, and the estimated model parameters are defined with an uncertainty measure using the 95% confidence limit. The proposed technique has been applied to synthetic data generated from a model depicting a realistic example, and also on field data from two examples, one of which closely resembles the example of synthetic data and the other as a benchmark example. Numerical experiments validate the applicability of the method.

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The role of fluids in faulting deformation:a case study from the Dead Sea Transform (Jordan)

Janssen

Romer

Hoffmann‐Rothe

et al. 2005

Int J Earth Sci (Geol Rundsch)

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The geochemistry of carbonate fault rocks has been examined in two areas of the Arava Fault segment, which forms the major branch of the Dead Sea Transform between the Dead Sea and the Gulf of Aquaba. The role of fluids in faulting deformation in the selected fault segment is remarkably different from observations at other major fault zones. Our data suggest reduced fluid rock interactions in both areas and limited fluid flow. The fault did not act as an important fluid conduit. There are no indications that hydrothermal reactions (cementation, dissolution) did change the strength and behavior of the fault zone, although the two areas show considerable differences with respect to fluid sources and fluid flow. In one area, the investigated calcite mineralization reveals an open fluid system with fluids originating from a variety of sources. Stable isotopes (d 13 C, d 18 O), strontium isotopes, and trace elements indicate both infiltration of descending (meteoric and/or sea water) and ascending hydrothermal fluids. In the other area, all geochemical data indicate only local (small scale) fluid redistribution. These fluids were derived from the adjacent limestones under nearly closed-system conditions.

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The Dead Sea Transform: Evidence for a Strong Fault?

Cited by 19 publications

References 56 publications

Different styles of faulting deformation along the Dead Sea Transform and possible consequences for the recurrence of major earthquakes

Different styles of faulting deformation along the Dead Sea Transform and possible consequences for the recurrence of major earthquakes

Applications of Hilbert transform and Newton's root finding algorithm in delineating buried fracture from magnetic anomaly data

The role of fluids in faulting deformation:a case study from the Dead Sea Transform (Jordan)

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