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Hamar Laghdad

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Journal Article
Published: 01 June 2002
Bulletin of Canadian Petroleum Geology (2002) 50 (2): 217-243.
...Steven A. Aitken; Charles M. Henderson; Christopher J. Collom; Paul A. Johnston Abstract Recent debates concerning the origin of Emsian carbonate mud buildups exposed at Hamar Laghdad in the eastern Anti-Atlas of Morocco centre around geochemical studies that suggest authigenic or chemosynthetic...
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Cryptic coral-crinoid “hanging gardens” from <b>Hamar</b> <b>Laghdad</b> area (southern M...
in > Geology
Published: 01 February 2014
Figure 1. Cryptic coral-crinoid “hanging gardens” from Hamar Laghdad area (southern Morocco). A and B: Polished slabs of carbonates containing cryptic assemblage, with several clearly visible generations of encrusting cnidarians and crinoids growing downward from roof (dashed line in A). C–E
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Stratigraphy of the Lower Devonian, <b>Hamar</b> <b>Laghdad</b> (Fig. 3 , Section 9). The...
Published: 01 June 2002
Fig. 4. Stratigraphy of the Lower Devonian, Hamar Laghdad (Fig. 3 , Section 9). The Pragian–Emsian interval consists of three T–R sequences: S1 – base sulcatus –top pireneae zones (Pragian), S2 – base dehiscens –top gronbergi zones (lower Emsian), and S3 – base inversus – laticostatus
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Bivalvia, Middle Devonian, <b>Hamar</b> <b>Laghdad</b>, Morocco.  A–C.  Anomalodesmata , ...
Published: 01 June 2002
Fig. 14. Bivalvia, Middle Devonian, Hamar Laghdad, Morocco. A–C. Anomalodesmata , new genus and species, Hollard Mound. A. left valve, juvenile, Gö Onj K 1227-506/300, x 3.5; B. left valve, Gö Onj K 1227-506/30, x1; C. left valve, TMP 1999.89.3, x1; D. Solemyidae, Dystactella ? sp
Journal Article
Journal: Geology
Published: 01 February 2014
Geology (2014) 42 (2): 119-122.
...Figure 1. Cryptic coral-crinoid “hanging gardens” from Hamar Laghdad area (southern Morocco). A and B: Polished slabs of carbonates containing cryptic assemblage, with several clearly visible generations of encrusting cnidarians and crinoids growing downward from roof (dashed line in A). C–E...
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Journal Article
Published: 01 May 1998
Journal of Sedimentary Research (1998) 68 (3): 368-377.
... on the Hamar Laghdad elevation, which was created by a submarine volcanic eruption, and were associated with a network of synsedimentary radial and tangential faults that originated by uplift of the intrusive laccolithic body underlying the Kess-Kess Formation. These faults served as conduits for the migration...
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A.  Geological map showing the location of the mud buildups at <b>Hamar</b> Laghda...
Published: 01 June 2002
Fig. 3. A. Geological map showing the location of the mud buildups at Hamar Laghdad (modified after Massa et al., 1965 ; UTM grid in metres) with locations of measured sections (1 to 10). B. Stratigraphic cross-section showing the distribution of lithostratigraphic units. Uppermost Silurian
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A.  Map of northwest Africa showing geographic elements and location of the...
Published: 01 June 2002
Fig. 1. A. Map of northwest Africa showing geographic elements and location of the study area in the eastern Anti-Atlas, Morocco (modified after Michard, 1976 ). Location of mud buildups and ooidal ironstone deposits are also shown: 1, 2. Hamar Laghdad, 3. Ma’der Basin, 4. Ahnet Basin, 5
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Stable oxygen and carbon isotopic values, iron content, and cathodoluminesc...
Published: 01 June 2002
Table 1. Stable oxygen and carbon isotopic values, iron content, and cathodoluminescence of calcite cements and microspars constituting the Emsian Hamar Laghdad mud buildups and adjacent platform carbonates * C1b cements sampled from neptunian dykes.
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Regional stratigraphic section of Lower and Middle Devonian strata constitu...
Published: 01 June 2002
Phanerozoic ooidal ironstone deposits from Laurentia. Ma’der Basin section from Bultynck (1985) , Tindouf Basin section from Guerrak (1989). Middle Devonian platform carbonates at Hamar Laghdad contain the Hollard Mound, which appears to have repeatedly nucleated and grown at the same site. Lower Devonian
Journal Article
Published: 01 May 2012
Bulletin de la Société Géologique de France (2012) 183 (3): 217-231.
... et al. [2007] in Middle Devonian Hollard Mound core facies at Hamar Laghdad (Morocco) and were interpreted by these authors as hydrocarbon-seep related microbial products. Table I Stable isotope (δ 13 C and δ 18 O) data from the Upper Albian of Oued Siliana and Jebel Srassif buildups. Tabl...
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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP297.21
EISBN: 9781862395459
...-grained limestones, marls and rare siliciclastic deposits (Fig.  4 a and b). Calc-alkaline basaltic flows and peperites were emplaced north of Hamar Laghdad (Fig.  3 ) in the Lochkovian sediments. Some coral biostromes and most spectacular Stromatactis mud mounds ( Brachert et al. 1992 ; Montenat et...
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Journal Article
Journal: Geology
Published: 01 March 2001
Geology (2001) 29 (3): 271-274.
... venting in a Middle Devonian carbonate mound (Hollard Mound) at the Hamar Laghdad (Antiatlas, Morocco) : Facies , v. 40 p. 281 – 296 . Peckmann , J. , Thiel , V. , Michaelis , W. , Clari , P. , Gaillard , C. , Martire , L. , and Reitner , J. , 1999 b, Cold seep...
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Journal Article
Published: 01 July 2004
Journal of Paleontology (2004) 78 (4): 709-722.
... ( Chlupáč, 1983 , p. 49 and tab. 2). Analogous Paralejurus -bearing facies occur in the Steinberger Limestone, Germany ( P. richteri ), the light Crinoidenschuttkalk, Austria ( P . cf. subcampanifer ), the Lower Hamar-Laghdad Limestone, Morocco ( P. brongniarti , P. hamlagdadicus G. Alberti, 1983...
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Journal Article
Journal: PALAIOS
Published: 01 July 2010
PALAIOS (2010) 25 (7): 468-474.
... , G. G. , 2007 , Chemosynthetic microbialites in the Devonian carbonate mounds of Hamar Laghdad (Anti-Atlas, Morocco) : Sedimentary Geology , 200 . 73 – 88 . Chafetz , H. S. , Akdim , B. , Julia , R. , and Reid , A. , 1998 , Mn- and Fe-rich black travertine shrubs...
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Journal Article
Journal: Geology
Published: 01 July 2008
Geology (2008) 36 (7): 543-546.
.... Walliser O.H. Riegel W. Reitner J. 1999 , Signatures of hydrocarbon venting in a Middle Devonian carbonate mound (Hollard Mound) at the Hamar Laghdad (Antiatlas, Morocco): Facies , 40...
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Journal Article
Published: 01 November 2000
Journal of Paleontology (2000) 74 (6): 992-999.
... , J. , O. H. Walliser , W. Riegel , and J. Reitner . 1999a . Signatures of hydrocarbon venting in a Middle Devonian carbonate mound (Hollard Mound) at the Hamar Laghdad (Antiatlas, Morocco) . Facies , 40 : 281 - 296 . Peckmann , J. , V. Thiel , W. Michaelis...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2016
GSA Bulletin (2016) 128 (5-6): 989-999.
... , F. , Russo , F. , 2012b , Organic matter remains in the laminated microfabrics of the Kess-Kess mounds (Hamar Laghdad, Lower Devonian, Morocco) : Sedimentary Geology , v. 263–264 , p. 194 – 201 , doi:10.1016/j.sedgeo.2011.12.010. Guido , A. , Vescogni , A. , Mastandrea...
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Journal Article
Published: 01 July 2008
Journal of Paleontology (2008) 82 (4): 657-675.
... and Vaněk, 1966 , pl. 7, fig. 5; Šnajdr, 1984 , pl. 6, fig. 10), pygidia ( Bruton, 1966 , pl. 57, figs. 15, 17, 18; Přibyl and Vaněk, 1966 , pl. 7, fig. 6); calcareous. tafilaltana G. Alberti , 1967 ; Isoprusia ( Isoprusia ); lower Hamar Laghdad Limestone (Pragian), Hamar Laghdad III...
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Journal Article
Published: 02 April 2018
Journal of Paleontology (2018) 92 (4): 596-610.
..., Palaeoclimatology, Palaeoecology , v. 390 , p. 94 – 115 . Aitken , S.A. , Henderson , C.M. , Collom , C.J. , and Johnston , P.A. , 2002 , Stratigraphy, paleoecology, and origin of Lower Devonian (Emsian) carbonate mud buildups, Hamar Laghdad, eastern Anti-Atlas, Morocco, Africa : Bulletin...
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