Magnetic fabric of clay sediments from the external northern Apennines (Italy)

Sagnotti, Leonardo; Speranza, Fabio; Winkler, Aldo; Mattei, Massimo; Funiciello, R.

doi:10.1016/s0031-9201(97)00071-x

Cited by 113 publications

(76 citation statements)

References 31 publications

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“…4C) [SI] 내외의 낮은 대자율 값을 보이고 있어 (Fig. 5A-D (Hrouda, 1994;Sagnotti et al, 1998;Park et al, 2013). (Fig.…”

Section: 조형성·김민철·김현정·손문unclassified

Anisotropy of Magnetic Susceptibility (AMS) of the Quaternary Faults, SE Korea: Application to the Determination of Fault Slip Sense and Paleo-stress Field

Cho¹,

Kim²,

Kim³

et al. 2014

The Journal of the Petrological Society of Korea

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The Quaternary faults are extensively observed along major inherited fault zones (i.e. Yangsan Fault System, Ulsan Fault, Yeonil Tectonic Line, Ocheon Fault System) in SE Korea. Their geometry and kinematics provide a very useful piece of information about the Quaternary crustal deformation and stress field in and around Korean Peninsula. Using magnetic fabrics (AMS), we attempted to determine the slip senses of Jinti, Mohwa, Suseongji2, and Wangsan faults and then interpreted the fabric development process of fault gouge and the characteristics of stress field during the Quaternary. All the magnetic fabrics of the faults, except the Wangsan Fault, consistently indicate a dominant reverse-slip sense with weak strike-slip component. Most of the oblate fabrics are nearly parallel to the fault surface and the anisotropy degrees generally increase in proportion to the oblatenesses. These results suggest that the fabrics of the fault gouges resulted from a progressive deformation due to continuous simple shear during the last reactivation stage as reverse faulting. It is also interpreted that the pre-existing fabrics were overwhelmed and obliterated by the re-activated faulting. Paleostress field calculated from the fault slip data indicates an

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“…4C) [SI] 내외의 낮은 대자율 값을 보이고 있어 (Fig. 5A-D (Hrouda, 1994;Sagnotti et al, 1998;Park et al, 2013). (Fig.…”

Section: 조형성·김민철·김현정·손문unclassified

Anisotropy of Magnetic Susceptibility (AMS) of the Quaternary Faults, SE Korea: Application to the Determination of Fault Slip Sense and Paleo-stress Field

Cho¹,

Kim²,

Kim³

et al. 2014

The Journal of the Petrological Society of Korea

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“…Anisotropy of magnetic susceptibility (AMS) is a petrofabric tool able to determine the preferred orientation of magnetically-dominant minerals, and it is commonly used as a rock strain indicator (e.g., Jelinek, 1977;Hrouda, 1982Hrouda, , 1993Borradaile, 1988Borradaile, , 1991Jackson, 1991;Jackson and Tauxe, 1991;Rochette et al, 1992;Tarling and Hrouda, 1993;Sagnotti et al, 1994Sagnotti et al, , 1998Parés et al, 1999;Soto et al, 2009). In weakly deformed sedimentary rocks, AMS reflects the initial fabric produced during incipient deformation (mainly related to layer-parallel shortening) at the time of, or shortly after, deposition and diagenesis of the sediment (Sintubin, 1994;Sagnotti et al, 1998Sagnotti et al, , 1999Parés et al, 1999;Coutand et al, 2001;Cifelli et al, 2004Cifelli et al, , 2005Larrasoaña et al, 2004;Soto et al, 2009).…”

Section: Anisotropy Of Magnetic Susceptibility (Ams): Methodologymentioning

confidence: 99%

“…In weakly deformed sedimentary rocks, AMS reflects the initial fabric produced during incipient deformation (mainly related to layer-parallel shortening) at the time of, or shortly after, deposition and diagenesis of the sediment (Sintubin, 1994;Sagnotti et al, 1998Sagnotti et al, , 1999Parés et al, 1999;Coutand et al, 2001;Cifelli et al, 2004Cifelli et al, , 2005Larrasoaña et al, 2004;Soto et al, 2009). For this reason AMS analyses of weakly deformed sediments have frequently been used in orogenic settings to document the syn-sedimentary tectonic regime (Mattei et al, 1999; A C C E P T E D M A N U S C R I P T…”

Section: Anisotropy Of Magnetic Susceptibility (Ams): Methodologymentioning

confidence: 99%

“…12 Sagnotti and Speranza, 1993;Sagnotti et al, 1998;Parés et al, 1999;van Hinsbergen et al, 2005;Maffione et al, 2012;Gong et al, 2009;Macrì et al, 2014, among many others).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…In compressive settings, the magnetic lineation is usually sub-horizontal and parallel to both the local strike of the strata and folds axes (e.g., Sagnotti and Speranza 1993;Mattei et al, 1997;Sagnotti et al, 1998). The relationship between the direction of the magnetic lineation and the local attitude of the studied rock is therefore often diagnostic to discriminate the tectonic regime (compressive versus extensional) responsible for the origin of the magnetic lineation (Mattei et al, 1997).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

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Constraints on deformation of the Southern Andes since the Cretaceous from anisotropy of magnetic susceptibility

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Unraveling the geometry of the New England oroclines (eastern Australia): Constraints from magnetic fabrics

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The southern New England Orogen (NEO) in eastern Australia is characterized by tight curvatures (oroclines), but the exact geometry of the oroclines and their kinematic evolution are controversial. Here we present new data on the anisotropy of magnetic susceptibility (AMS), which provide a petrofabric proxy for the finite strain associated with the oroclines. We focus on a series of preoroclinal Devonian-Carboniferous fore-arc basin rocks, which are aligned parallel to the oroclinal structure, and by examining structural domains, we test whether or not the magnetic fabric is consistent with the strain axes. AMS data show a first-order consistency with the shape of the oroclines, characterized, in most of structural domains, by subparallelism between magnetic lineations, "structural axis" and bedding. With the exception of the Gresford and west Hastings domains, our results are relatively consistent with the existence of the Manning and Nambucca (Hastings) Oroclines. Reconstruction of magnetic lineations to a prerotation (i.e., pre-late Carboniferous) stage, considering available paleomagnetic results, yields a consistent and rather rectilinear NE-SW predeformation fore-arc basin. This supports the validity of AMS as a strain proxy in complex orogens, such as the NEO. In the Hastings Block, magnetic lineations are suborthogonal to bedding, possibly indicating a different deformational history with respect to the rest of the NEO.

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Magnetic fabric of clay sediments from the external northern Apennines (Italy)

Cited by 113 publications

References 31 publications

Anisotropy of Magnetic Susceptibility (AMS) of the Quaternary Faults, SE Korea: Application to the Determination of Fault Slip Sense and Paleo-stress Field

Anisotropy of Magnetic Susceptibility (AMS) of the Quaternary Faults, SE Korea: Application to the Determination of Fault Slip Sense and Paleo-stress Field

Constraints on deformation of the Southern Andes since the Cretaceous from anisotropy of magnetic susceptibility

Unraveling the geometry of the New England oroclines (eastern Australia): Constraints from magnetic fabrics

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