Keys and pitfalls in mesoscale fault analysis and paleostress reconstructions, the use of Angelier's methods

Hippolyte, Jean-Claude; Bergerat, Françoise; Gordon, Mark B.; Bellier, Olivier; Espurt, Nicolás

doi:10.1016/j.tecto.2012.01.012

Cited by 62 publications

(41 citation statements)

References 57 publications

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“…Moreover, the observed slickenside interactions together with their crosscutting relationships and stratigraphic information are used to determine the various deformation phases and their succession in time. However, if the deformation phases of areas have no cross-cutting or overprinting relationships, the age of host lithology and the similarity of the stress orientations/ratios to other sites are used for which deformation phase is encountered (see Hippolyte, Bergerat, Gordon, Bellier, & Espurt, 2012;Sperner & Zweigel, 2010).…”

Section: Methodsmentioning

confidence: 99%

Field evidence for normal fault linkage and relay ramp evolution: the Kırkağaç Fault Zone, western Anatolia (Turkey)

Uzel

2016

Geodinamica Acta

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Linking of normal faults forms at all scales as a relay ramp during growth stages and represents the most efficient way for faults to lengthen during their progressive formation. Here, I study the linking of normal faulting along the active Kırkağaç Fault Zone within the west Anatolian extensional system to reconstruct fault interaction in time and space using both field-and computer-based data. I find that (i) connecting of the relay zone/ramp occurred with two breaching faults of different generations and that (ii) the propagation was facilitated by the presence of pre-existing structures, inherited from the İzmir-Balıkesir transfer zone. Hence, the linkage cannot be compared directly to a simple fault growth model. Therefore, I propose a combined scenario of both hangingwall and footwall fault propagation mechanisms that explain the present-day geometry of the composite fault line. The computer-based analyses show that the approximate slip rate is 0.38 mm/year during the Quaternary, and a NE-SW-directed extension is mainly responsible for the recent faulting along the Kırkağaç Fault Zone. The proposed structural scenario also highlights the active fault termination and should be considered in future seismic hazard assessments for the region that includes densely populated settlements.

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Section: Methodsmentioning

confidence: 99%

Field evidence for normal fault linkage and relay ramp evolution: the Kırkağaç Fault Zone, western Anatolia (Turkey)

Uzel

2016

Geodinamica Acta

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“…These overprinting relationships, together with cross-cutting relationships and stratigraphic information, were used to determine the various deformation phases and their succession in time. If no cross-cutting or overprinting relationships were encountered, the age of the host lithology and the similarity of the stress orientations/stress ratios to other sites were taken into account when the deformation phase was already precisely assigned (Hippolyte et al, 2012;Sperner & Zweigel, 2010). After processing fault-slip data, three different deformation phases can be separated, according to our results and the available kinematic data from the literature (Beccaletto & Steiner, 2005;Bonev et al, 2009).…”

Section: Palaeostress Reconstructionmentioning

confidence: 98%

“…Angelier, 1979Angelier, , 1994Armijo, Carey, & Cisternas, 1982;Marrett & Allmendinger, 1990;Will & Powell, 1991;Yamaji, 2000;Yin & Ranalli, 1993;Žalohar & Vrabec, 2007) were developed for the computer-based inversion of structural data. Because of the robustness in multistage deformed areas (see Angelier et al, 1981;Brahim et al, 2002;Hippolyte & Mann, 2011;Kaymakçı, White, & van Dijk, 2000;Sperner et al, 2003;Vandycke & Bergerat, 2001), we used the Direct Inversion Method (INVD) of Angelier (1990) in this study; however, we refer to Angelier (1994) for a detailed review of the method and to Sperner and Zweigel (2010) and Hippolyte, Bergerat, Gordon, Bellier, and Espurt (2012) for data acquisition and separation techniques. Briefly, the INVD is based on the reduced stress tensor concept and the estimation of the stress ellipsoid by the shape factor (Φ), which varies between 0 and 1.…”

Section: Paleostress Analysis Of Fault-slip Datamentioning

confidence: 99%

Kinematic analysis and palaeoseismology of the Edremit Fault Zone: evidence for past earthquakes in the southern branch of the North Anatolian Fault Zone, Biga Peninsula, NW Turkey

et al. 2016

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The Edremit Fault Zone (EFZ) forms one of the southern segments of the North Anatolian Fault Zone (NAFZ) at the northern margin of the Edremit Gulf (Biga Peninsula, South Marmara Region, Turkey). Stratigraphic, structural and kinematic results indicate that basinward younging of the fault zone, in terms of a rolling-hinge mechanism, has resulted in at least three discrete Miocene to Holocene deformational phases: the oldest one (Phase 1) directly related to the inactive Kazdağ Detachment Fault, which was formed under N-S trending pure extension; Phase 2 is characterised by a strike-slip stress condition, probably related to the progression of the NAFZ towards the Edremit area in the PlioQuaternary; and Phase 3 is represented by the high-angle normal faulting, which is directly interrelated with the last movement of the EFZ. Our palaeoseismic studies on the EFZ revealed the occurrence of three past surface rupture events; the first one occurred before 13178 BC, a penultimate event that may correspond to either the 160 AD or 253 AD historical earthquakes, and the youngest one can be associated with the 6 October 1944 earthquake (M w = 6.8). These palaeoseismic data indicate that there is no systematic earthquake recurrence period on the EFZ.

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“…Zonas de falha foram identificadas pelas feições morfológicas e estruturas rúpteis, utilizando indicadores cinemáticos diversos (Petit 1987;Hippolyte et al 2012). As populações de falhas e mesofalhas (cm-m;Hancock 1985) foram separadas pelo método dos diedros retos P&T (Angelier & Mechler 1977), no programa Faultkin 5.6.3 (Marret & Allmendinger 1990;Allmendinger et al 2012), conferindo peso menor ao vetor deslocamento deduzido das relações angulares de fraturas Riedel.…”

Section: Palavras-chaveunclassified

Alojamento do granito Lavras e a mineralização aurífera durante evolução de centro vulcano-plutônico pós-colisional, oeste do Escudo Sul-riograndense: dados geofísicos e estruturais

et al. 2015

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RESUMO:A construção do granito Lavras é analisada mediante integração de dados geológicos, geofísicos e estruturais originais e compilados, em consonância com a evolução do centro vulcano-plutônico. Esse centro engloba o complexo intrusivo Lavras do Sul e a sequência traquiandesítica da Formação Hilário (604 -590 Ma), ambos formados em posição de antepaís durante o período pós-colisional da Orogênese Dom Feliciano, no oeste do Escudo Sul-riograndense. A análise de estruturas rúpteis e lineamentos magnéticos indica que o vulcanismo teve início próximo ao colapso dessa orogenia, condicionado por sistemas transtensivos dextrais NW-SE a WNW-ESE que invertem para sinistrais com o relaxamento tectônico. A formação do complexo intrusivo, principiando com a intrusão subvulcânica do monzonito Tapera no norte, acompanhou a inversão no regime de stress regional ao longo de zona de falha N70-75°W que o seciona. Ao final, ocorreu o posicionamento do granito Lavras no sul, o qual possui dimensões modestas (325 km³) e forma tabular (comprimento -L: espessura -E ≈ 3:1) afinando para sul, como deduzido dos dados gravimétricos. Dois domínios composicional--estruturais, equivalentes aos granitos magnesianos centrais (granodiorito e monzogranito) e os ferrosos da borda (sienogranito e feldspato alcalino granito), são definidos pela trama ASM (anisotropia de suscetibilidade magnética). Tais dados, aliados aos de estruturas rúpteis, apontam um pluton multicíclico construído em dois eventos de ressurgência, envolvendo: (1)

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Keys and pitfalls in mesoscale fault analysis and paleostress reconstructions, the use of Angelier's methods

Cited by 62 publications

References 57 publications

Field evidence for normal fault linkage and relay ramp evolution: the Kırkağaç Fault Zone, western Anatolia (Turkey)

Field evidence for normal fault linkage and relay ramp evolution: the Kırkağaç Fault Zone, western Anatolia (Turkey)

Kinematic analysis and palaeoseismology of the Edremit Fault Zone: evidence for past earthquakes in the southern branch of the North Anatolian Fault Zone, Biga Peninsula, NW Turkey

Alojamento do granito Lavras e a mineralização aurífera durante evolução de centro vulcano-plutônico pós-colisional, oeste do Escudo Sul-riograndense: dados geofísicos e estruturais

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