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Tizi n'Test Fault

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Journal Article

Update on the Compressional Tectonic Evolution of the Tizi n’Test Fault Zone (Western High Atlas) and Its Relation to the Al‐Haouz Earthquake of 8 September 2023

Abdelmounim Qarbous, Youssef Timoulali, Christian Hoepffner, Ahmed Chalouan, Lalla Amina Ouzzaouit, Fatima‐Zahra Allaki, Kaoutar Bargach
Published: 19 March 2025
Bulletin of the Seismological Society of America (2025)
DOI: https://doi.org/10.1785/0120240212
... of the earthquake to major reverse faults of the Tizi n’Test fault zone (TTFZ) in response to a submeridian Atlasic shortening. At depth, we propose that this fault zone is probably linked to the lithosphere–asthenosphere boundary plane north of the mantle dome, well known for its seismotectonic activity...
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View PDF for article title, Update on the Compressional Tectonic Evolution of the <span class="search-highlight">Tizi</span> <span class="search-highlight">n’Test</span> <span class="search-highlight">Fault</span> Zone (Western High Atlas) and Its Relation to the Al‐Haouz Earthquake of 8 September 2023
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Early Publication
Image
Regional geodynamic model of the Tizi n’Test fault zone during Atlasic compression (location in Fig. 4). The color version of this figure is available only in the electronic edition.

Regional geodynamic model of the Tizi n’Test fault zone during Atlasic comp...

Published: 19 March 2025
Figure 6. Regional geodynamic model of the Tizi n’Test fault zone during Atlasic compression (location in Fig.  4 ). The color version of this figure is available only in the electronic edition.
Image
The Tizi n’Test fault in the vicinity of the Kasbah. Looking northwest from Arroumd village toward the Kasbah. See Figures 2 and 3 for these locations.

The Tizi n’Test fault in the vicinity of the Kasbah. Looking northwest from...

Published: 01 July 2014
Figure 11. The Tizi n’Test fault in the vicinity of the Kasbah. Looking northwest from Arroumd village toward the Kasbah. See Figures 2 and 3 for these locations.
Journal Article

Influence of Anthropogenic Groundwater Unloading in Haouz Plain on the 8 September 2023 M w 6.8 Al Haouz, Morocco Earthquake

Prohelika Dalal, Bhaskar Kundu, K. M. Sreejith, Batakrushna Senapati, Deepak K. Tiwari, Naresh Krishna Vissa, Birendra Jha, Shuanggen Jin
Published: 24 December 2024
Bulletin of the Seismological Society of America (2024)
DOI: https://doi.org/10.1785/0120240105
... a significant increase in up‐dip shear stress at the seismogenic depth, explicitly on a slowly deforming High‐Atlas Mountains in western Morocco. The increased stress contributes to the ongoing interseismic tectonic loading on the steeply dipping Tizi n’Test fault and might have led to a significant clock...
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View PDF for article title, Influence of Anthropogenic Groundwater Unloading in Haouz Plain on the 8 September 2023 M w 6.8 Al Haouz, Morocco Earthquake
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Early Publication
Includes: Supplemental Content
Journal Article

Catastrophic rock avalanches in a glaciated valley of the High Atlas, Morocco: 10 Be exposure ages reveal a 4.5 ka seismic event

Philip D. Hughes, David Fink, William J. Fletcher, George Hannah
Journal: GSA Bulletin
Published: 01 July 2014
GSA Bulletin (2014) 126 (7-8): 1093–1104.
DOI: https://doi.org/10.1130/B30894.1
...Figure 11. The Tizi n’Test fault in the vicinity of the Kasbah. Looking northwest from Arroumd village toward the Kasbah. See Figures 2 and 3 for these locations. ...
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View PDF for article title, Catastrophic rock avalanches in a glaciated valley of the High Atlas, Morocco: 10 Be exposure ages reveal a 4.5 ka seismic event
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Journal Article

Early Carboniferous basins of the Atlas-Meseta domain (Morocco): Sedimentary model and geodynamic evolution

Jacques Beauchamp, Alain Izart
Journal: Geology
Published: 01 September 1987
Geology (1987) 15 (9): 797–800.
DOI: https://doi.org/10.1130/0091-7613(1987)15<797:ECBOTA>2.0.CO;2
...; sedimentation passed from turbidites into storm deposits. The Moroccan Meseta formed a complex marine basin composed of deep troughs, shallow shelves, and islands. The late Visean marine transgression advanced from the north and reached as far south in the High Atlas domain as the Tizi n'Test fault zone...
View PDF for article title, Early Carboniferous basins of the Atlas-Meseta domain (Morocco): Sedimentary model and geodynamic evolution
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Journal Article

Foreland thrusts and olistromes on the pre-Sahara margin of the Variscan orogen, Morocco

André Michard, Abdelaziz Yazidi, Fouad Benziane, Henri Hollard, Solange Willefert
Journal: Geology
Published: 01 May 1982
Geology (1982) 10 (5): 253–256.
DOI: https://doi.org/10.1130/0091-7613(1982)10<253:FTAOOT>2.0.CO;2
...André Michard; Abdelaziz Yazidi; Fouad Benziane; Henri Hollard; Solange Willefert Abstract East of the Tizi n'Test fault, one aspect of the southern margin of the North African Variscan belt is illustrated in the Tineghir traverse. It is characterized by Appalachian-type foreland thrusts pushed...
View PDF for article title, Foreland thrusts and olistromes on the pre-Sahara margin of the Variscan orogen, Morocco
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Image
Geological cross‐section through the WHA with the location of the Al‐Haouz earthquake focal (epicenter, see Fig. 1; Domènech et al., 2015, modified by Fekkak et al., 2018, adapted in this work). AMF, Adassil‐Medinet fault; ERF, Erdouz fault; NAD, Nord Atlasic detachment; NAF, Nord Atlasic fault; SAF, South Atlasic fault; TDF, Tadafelt fault; TMF, Tinmel fault; TNTF, Tizi n’Test fault. The color version of this figure is available only in the electronic edition.

Geological cross‐section through the WHA with the location of the Al‐Haouz ...

Published: 19 March 2025
, Nord Atlasic fault; SAF, South Atlasic fault; TDF, Tadafelt fault; TMF, Tinmel fault; TNTF, Tizi n’Test fault. The color version of this figure is available only in the electronic edition.
Image
The major faults of the Western High Atlas (WHA) plotted on a schematic geological map (Fekkak et al., 2018, adapted) Main Alpine faults: AMF, Adassil‐Medinet fault; ERF, Erdouz fault; KMF, Kettou‐Makhfamane; NAD, Nord Atlasic Detachment; NAF, Nord Atlasic fault; TDF, Tadafelt fault; TMF, Tinmel fault; TNTF, Tizi n’Test fault. (1) Dutour and Ferrandini (1985) and Petit et al. (1985), Neotectonic; (2) Amrhar (2002), Jurassic, Cretaceous, and Eocene stations; (3) Qarbous et al. (2008), Triassic stations; (4) Ouanaimi and Petit (1992), Triassic and basement; and (5) Ellero et al. (2012), Paleozoïc and Mesozoïc stations. GFZ, GeoForschungsZentrums; Global CMT, Global Centroid Moment Tensor; USGS, U.S. Geological Survey. (inset) Location of study area in Morocco. The color version of this figure is available only in the electronic edition.

The major faults of the Western High Atlas (WHA) plotted on a schematic geo...

Published: 19 March 2025
; TMF, Tinmel fault; TNTF, Tizi n’Test fault. (1) Dutour and Ferrandini (1985) and Petit et al. (1985) , Neotectonic; (2) Amrhar (2002) , Jurassic, Cretaceous, and Eocene stations; (3) Qarbous et al. (2008) , Triassic stations; (4) Ouanaimi and Petit (1992) , Triassic and basement; and (5
Image
Observed, model‐predicted (Bayesian), and residual coseismic line‐of‐sight (LOS) deformation. (a) Observed coseismic Interferometric Synthetic Aperture Radar (InSAR) LOS displacement for Sentinel 1A ascending track 45, descending tracks 52 and 154. The red lines represent the major faults of this region. Abbreviations: NAF, North Atlas fault; SAF, South Atlas fault; TTF, Tizi n’Test fault. (b) Predicted coseismic LOS displacements using best‐fit model parameters (uniform slip). (c) Residual LOS displacements (estimated after subtracting the observed and model predicted LOS displacements). The color bar represents InSAR LOS displacement, in which the positive displacement indicates the LOS displacement moving toward the satellite. (d) The lowermost panel illustrates the observed and model LOS displacement for all tracks along a cross section shown in the middle panel (black line). The color version of this figure is available only in the electronic edition.

Observed, model‐predicted (Bayesian), and residual coseismic line‐of‐sight ...

Published: 24 December 2024
faults of this region. Abbreviations: NAF, North Atlas fault; SAF, South Atlas fault; TTF, Tizi n’Test fault. (b) Predicted coseismic LOS displacements using best‐fit model parameters (uniform slip). (c) Residual LOS displacements (estimated after subtracting the observed and model predicted LOS
Journal Article

Jurassic sediments and synsedimentary tectonics in the central High Atlas, Morocco

G. Seufert
Published: 01 May 1988
Bulletin de la Société Géologique de France (1988) IV (3): 375–390.
DOI: https://doi.org/10.2113/gssgfbull.IV.3.375
... Atlas horizontal movements Jurassic Mesozoic Moroccan Atlas Mountains Morocco North Africa structural geology superposed tectonics synsedimentary processes tectonics Tizi n'Test Fault turbidite ...
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Journal Article

L'accident du Tizi n'Test et le role des decrochements dans la tectonique du Haut Atlas occidental (Maroc)

Francois Proust, Jean-Pierre Petit, Paul Tapponnier
Published: 01 January 1977
Bulletin de la Société Géologique de France (1977) S7-XIX (3): 541–551.
DOI: https://doi.org/10.2113/gssgfbull.S7-XIX.3.541
... Atlas Mountains Morocco North Africa North America orogeny Paleozoic reverse faults schistosity South Atlasic Fault strike-slip faults structural analysis style Tizi n'Test Fault Variscan Orogeny ...
View PDF for article title, L&#x27;accident du <span class="search-highlight">Tizi</span> <span class="search-highlight">n&#x27;Test</span> et le role des decrochements dans la tectonique du Haut Atlas occidental (Maroc)
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Image
Three plausible fault geometries permitted by the known structural geology and seismology. Oblique cross sections (a–c) of westernmost edge of map views (d–f) showing regional fault geometries (a,b,d,e) and National Earthquake Information Center (NEIC) solutions (c,f). Location map at right shows regional faults and surface projections of NEIC plane solutions plotted in panels (d–f) (location maps use ESRI basemaps). Hypocenter location (black circle) in panels (a–c). (a,d) North Atlas fault geometries and (b,e) South Atlas fault geometries projected with parameters listed in GEM fault database (Styron and Pagani, 2020). NEIC nodal planes, preferred FFM, and centroid location (white circle) shown in panels (c) and (f). Surface projections of nodal planes (south‐dipping orange plane and north‐dipping blue plane), FFM (black) and Tizi n’Test fault (as depicted in Sébrier et al., 2006) (cyan) on panel (f). Topography data via Shuttle Radar Topography Mission. Topography in cross sections (a–c) is 2× vertically exaggerated for presentation purposes; subsurface geometries are true to scale. Azimuth of views in cross section: a, 355°; b, 345°; c, 355°; elevation angle of views in cross section: a, 5°; b, 5°; C,  10°.

Three plausible fault geometries permitted by the known structural geology ...

Published: 12 December 2023
fault database ( Styron and Pagani, 2020 ). NEIC nodal planes, preferred FFM, and centroid location (white circle) shown in panels (c) and (f). Surface projections of nodal planes (south‐dipping orange plane and north‐dipping blue plane), FFM (black) and Tizi n’Test fault (as depicted in Sébrier et al
Journal Article

Rapid Source Characterization of the 2023 M w 6.8 Al Haouz, Morocco, Earthquake

William L. Yeck, Alexandra E. Hatem, Dara E. Goldberg, William D. Barnhart, Jessica A. Thompson Jobe, David R. Shelly, Antonio Villaseñor, Harley M. Benz, Paul S. Earle
Published: 12 December 2023
The Seismic Record (2023) 3 (4): 357–366.
DOI: https://doi.org/10.1785/0320230040
... fault database ( Styron and Pagani, 2020 ). NEIC nodal planes, preferred FFM, and centroid location (white circle) shown in panels (c) and (f). Surface projections of nodal planes (south‐dipping orange plane and north‐dipping blue plane), FFM (black) and Tizi n’Test fault (as depicted in Sébrier et al...
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Journal Article

Le bassin de Tizi n’Test (Haut Atlas, Maroc): exemple d’évolution d’un segment oblique au rift de l’Atlantique central au Trias

Abdelmounim Qarbous, Fida Medina, Christian Hoepffner
Published: 24 June 2003
Canadian Journal of Earth Sciences (2003) 40 (7): 949–964.
DOI: https://doi.org/10.1139/e03-029
... study of the Tizi n’Test Triassic basin, located along the Tizi n’Test fault zone in the Moroccan High Atlas, has allowed us to improve the knowledge on the geometry of the structures and the activity of faults during the Triassic extensional events related to the rifting of the central Atlantic...
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View PDF for article title, Le bassin de <span class="search-highlight">Tizi</span> <span class="search-highlight">n’Test</span> (Haut Atlas, Maroc): exemple d’évolution d’un segment oblique au rift de l’Atlantique central au Trias
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Journal Article

Comparative influence of burial depth on the clay mineral assemblage of the Agadir-Essaouira basin (western High Atlas, Morocco)

L. Daoudi, B. Ouajhain, F. Rocha, B. Rhouta, N. Fagel, D. Chafiki
Journal: Clay Minerals
Published: 01 December 2010
Clay Minerals (2010) 45 (4): 453–467.
DOI: https://doi.org/10.1180/claymin.2010.045.4.453
..., called Tizi- n'Test faults, and its extension towards the Atlantic ( Proust et al. , 1977 ; Cornée et al. , 1990 , Bouatmani et al. , 2007 ). According to these data, the disappearance of smectite in the Agadir sedimentary series occurs at a temperature of ∼65°C. The temperature at which...
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View PDF for article title, Comparative influence of burial depth on the clay mineral assemblage of the Agadir-Essaouira basin (western High Atlas, Morocco)
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Journal Article

Large Holocene Earthquakes in the Lower Tagus Valley Fault Zone, Central Portugal

G. M. Besana-Ostman, S. P. Vilanova, E. S. Nemser, A. Falcao-Flor, S. Heleno, H. Ferreira, J. D. Fonseca
Published: 01 January 2012
Seismological Research Letters (2012) 83 (1): 67–76.
DOI: https://doi.org/10.1785/gssrl.83.1.67
... . Delcaillau B. Laville E. Amhrar M. Namous M. Dugue O. Pedoja K. ( 2010 ). Quaternary evolution of the Marrakech High Atlas and morphometric evidence of activity along the Tizi N’Test fault, Morocco . Geomorphology 118 , 262 – 279 . Dineva S. Batlló Mihailov J. D...
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View PDF for article title, Large Holocene Earthquakes in the Lower Tagus Valley <span class="search-highlight">Fault</span> Zone, Central Portugal
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Journal Article

Role of the Atlas Mountains (northwest Africa) within the African-Eurasian plate-boundary zone

Francisco Gomez, Weldon Beauchamp, Muawia Barazangi
Journal: Geology
Published: 01 September 2000
Geology (2000) 28 (9): 775–778.
DOI: https://doi.org/10.1130/0091-7613(2000)28<775:ROTAMN>2.0.CO;2
... (Zone de Faille du Tizi n’Test, Haut Atlas occidental, Maroc): Résultat d’une inversion tectonique contrôlée par une faille de détachement profonde : Journal of African Earth Sciences , v. v. 24 pp. 153 ߝ 168 . Platt , J.P. , Soto , J.I. , Whitehouse , M.J. , Hurford , A.J...
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Book Chapter

The Cambrian volcano-sedimentary formations of the westernmost High Atlas (Morocco): their place in the geodynamic evolution of the West African Palaeo-Gondwana northern margin

Author(s)
A. Pouclet, H. Ouazzani, A. Fekkak
Book: The Boundaries of the West African Craton
Series: Geological Society, London, Special Publications
Publisher: Geological Society of London
Published: 01 January 2008
DOI: 10.1144/SP297.15
EISBN: 9781862395459
... period, crop out in the southeastern part, between the northern and southern branches of the Tizi-n’Test Fault. The High Atlas westernmost part exhibits Early Cambrian to Early Carboniferous marine sedimentary and volcanic formations unconformably overlain by Late Carboniferous to Triassic continental...
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Abstract
View PDF for content titled, The Cambrian volcano-sedimentary formations of the westernmost High Atlas (Morocco): their place in the geodynamic evolution of the West African Palaeo-Gondwana northern margin
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Abstract In the westernmost part of the High Atlas, two Palaeozoic formations, rich in mafic volcanic rocks, are distinguished. They belong to different structural blocks created during the Variscan orogeny. New U–Pb dating yields an Early Cambrian age. The basaltic lavas have the composition of continental tholeiites and the magmatic signature of an initial rifting tectonic setting. They are related to the western Moroccan Cambrian rift. Their geodynamical context could be a passive margin initiated from an active rift that aborted in the Middle Cambrian.

Journal Article

Triassic-Liassic Deposits of Morocco and Eastern North America: Comparison

Franklyn B. Van Houten
Journal: AAPG Bulletin
Published: 01 January 1977
AAPG Bulletin (1977) 61 (1): 79–99.
DOI: https://doi.org/10.1306/C1EA3BFE-16C9-11D7-8645000102C1865D
... that in the west one of its major features was the late to post-Variscan Tisi n’Test right-lateral strike-slip fault that extended southwestward across the continental margin (Agidir fault; Rod, 1962 ) in the vicinity of the Canary Islands and just south of a large domain of offshore salt deposits ( Fig. 1...
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