The Hercynian Geanticline of Helez and the Late Palaeozoic history of the Levant

Gvirtzman, G.; Weissbrod, Tuvia

doi:10.1144/gsl.sp.1984.017.01.11

Cited by 46 publications

(31 citation statements)

References 6 publications

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“…Isopachs from exploratory wells indicate that the Rutbah uplift region was a Paleozoic depocenter ( Fig. 5) (Gvirtzman and Weissbrod, 1984;Lovelock 1984;Sawaf et al, 1988;Best, 1991). The Mesozoic section onlaps the northern flank of the uplift facing the Palmyride belt (at about 3.3 sec.…”

Section: Stratigraphy and Structure Of The Rutbah Upliftmentioning

confidence: 99%

Crustal structure of central Syria: The intracontinental Palmyride mountain belt

et al. 1992

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Along a 450 km transect across central Syria seismic reflection data, borehole information, potential field data and surface geologic mapping have been combined to examine the crustal structure of the northern Arabian platform beneath Syria. The transect is surrounded by the major plate boundaries of the Middle East, including the Dead Sea transform fault system along the Levantine margin to the west, the Bitlis suture and East Anatolian fault to the north, and the Zagros collisional belt to the northeast and east. Three main tectonic provinces of the northern Arabian platform in Syria are crossed by this transect from south to north: the Rutbah uplift, the Palmyra fold-thrust belt, and the Aleppo plateau. The Rutbah uplift in southern Syria is a broad, domal basement-cored structure with a thick Phanerozoic (mostly Paleozoic) cover of 6-7 km. Isopachs based on well and seismic reflection data indicate that this region was an early Paleozoic depocenter. The Palmyra fold-thrust belt, the northeastern arm of the Syrian Arc, is a northeastsouthwest trending intracontinental mountain belt that acts as a mobile tectonic zone between the relatively stable Rutbah uplift to the south and the less stable Aleppo plateau to the north. Short wavelength en echelon folds characterized by relatively steep, faulted southeast flanks dominate in the southwest, most strongly deformed segment of the belt, while a complex system of deeply rooted faults and broad folds characterize the northeast region, described in this study. The Aleppo plateau lies immediately north of the Palmyride belt, with a combined Paleozoic and Mesozoic sedimentary section that averages 4-5 km in thickness. Although this region appears relatively undeformed on seismic reflection data when compared to Palmyride deformation, a system of near vertical, probable strike-slip faults crosscut the region in a dominantly northeasterly direction.Gravity and magnetic modeling constrains the deep crustal structure along the transect. The crustal thickness is estimated to be approximately 38 km. Interpretation of the gravity data indicates two different crustal blocks beneath the Rutbah uplift and the Aleppo plateau, and the presence of a crustal-penetrating, high-density body beneath the northeast 2 Palmyrides. The two distinct crustal blocks suggest that they were accreted possibly along a suture zone and/or a major strike-slip fault zone located approximately in the present-day position of the Palmyrides. The age of the accretion is estimated to be Proterozoic or early Cambrian, based on the observation of a pervasive reflection (interpreted as the Middle Cambrian Burj limestone) in the Rutbah uplift and in the Aleppo plateau and by analogy with the well-mapped Proterozoic sutures of the Arabian shield to the south.

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Section: Stratigraphy and Structure Of The Rutbah Upliftmentioning

confidence: 99%

Crustal structure of central Syria: The intracontinental Palmyride mountain belt

et al. 1992

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“…4) (SPC unpublished regional reports, 1976(SPC unpublished regional reports, -1988. In a time period from Late Silurian to Permian, broad, subaerial uplifts formed in northern and southern Syria, resulting in the preservation of a thick (0.75 km) lower Silurian section in central Syria consisting of clastics and grabtolitic black shale, and the erosion or non-deposition of any Devonian rocks (Gvirtzman and Weissbrod, 1984;Lovelock, 1984;SPC unpublished regional reports, 1976SPC unpublished regional reports, -1988. On the Qamichli uplift at the northern end of the transect (see Fig.…”

Section: Paleozoicmentioning

confidence: 99%

“…2) the Middle Triassic unconformably overlies the Upper Ordovician. Rocks of Silurian through middle Triassic age are missing in the Qamichli and Affandi wells either due to erosion or non-deposition, depending upon the area considered (Ponikarov, 1967;Garfunkel and Derin, 1984;Gvirtzman and Weissbrod, 1984;Lovelock, 1984;Al Labown, 1988;SPC unpublished regional reports, 1976SPC unpublished regional reports, -1988. This unconformity also cuts out the Triassic in Turkey where the Lower Cretaceous section overlies Ordovician rocks (Kanun-1 well, Fig.…”

Section: Paleozoicmentioning

confidence: 99%

Stratigraphy and structure of eastern Syria across the Euphrates depression

et al. 1993

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A crustal-scale geotransect across the northern Arabian platform, oriented north-south in eastern Syria, reveals an alternating series of basement uplifts and basins separated by predominantly transpressional fault zones above an effectively uniform crust. Four major tectonic provinces are crossed along a 325 x 100 km corridor that extends from the Iraqi border in the south to the Turkish border in the north: the Rutbah uplift, the Euphrates depression, the Abd el Aziz structural zone, and the Qamichli uplift. These features are the manifestations of reactivated Pre-Cenozoic structures that responded to forces acting along nearby Arabian plate boundaries, particularly Cenozoic convergence and collision along the margins of the northern Arabian platform, i.e., the Bitlis suture and the East Anatolian fault in southern Turkey and the Zagros suture in Iran and Iraq.The database for this study consists of 3000 km of industry seismic reflection data, 28 exploratory wells, geologic, and Bouguer gravity maps. The deep crustal structure and, in part, the basement geometry along this transect are inferred from two-dimensional modeling of 2 Bouguer gravity, whereas the shallow (about 8 km) structure is constrained primarily by well and seismic data. 3. While Euphrates subsidence continued throughout the Cenozoic, the east-west trending Abd el Aziz structure began to be inverted into a fault-bounded tilted block since the Miocene, perhaps as a response to the last episode of intense Miocene collision along the nearby Bitlis and Zagros suture zones.

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“…Several large up-doming elements related to this Paleozoic configuration were reported in the Eastern Mediterranean region: the Hercynian Geoanticline of Helez, centred in the coastal plane of Israel (Gvirtzman and Weissbrod, 1984); Hazro structure extending across the Turkish-Syrian border (Rigo de Righi and Cortesini, 1964); Riyadh swell in central Saudi Arabia (Weissbrod, 2005). The elevated feature interpreted in the south-eastern corner of the GH, referred here as the Pezura Structure (Figures 4 & 6), may represent one of the uplifted features which constituted a part of this basin-and-swell configuration, although in considerably smaller scale.…”

Section: Pezura Structurementioning

confidence: 96%

“…The elevated feature interpreted in the south-eastern corner of the GH, referred here as the Pezura Structure (Figures 4 & 6), may represent one of the uplifted features which constituted a part of this basin-and-swell configuration, although in considerably smaller scale. The uplift, followed by the notable tilting and on-lapping sedimentation of younger Paleozoic strata (Figure 11c), can be related to the Hercynian Orogenic episode, which is dated in Jordan as mid-Carboniferous (Andrews, 1991) and Pre-Carboniferous or PrePermian (Gvirtzman and Weissbrod, 1984) event in Israel. However, figure 11b shows that the structure preceded the Middle Cambrian Burj Formation (H7) deposits, originating already in the upper Proterozoic and affecting the subsequent Paleozoic sedimentation.…”

Section: Pezura Structurementioning

confidence: 99%

Late Proterozoic – Paleozoic Geology of the Golan Heights and Its Relation to the Surrounding Arabian Platform

Meiler¹,

Reshef²,

Shulman³

2011

Earth and Environmental Sciences

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The Hercynian Geanticline of Helez and the Late Palaeozoic history of the Levant

Cited by 46 publications

References 6 publications

Crustal structure of central Syria: The intracontinental Palmyride mountain belt

Crustal structure of central Syria: The intracontinental Palmyride mountain belt

Stratigraphy and structure of eastern Syria across the Euphrates depression

Late Proterozoic – Paleozoic Geology of the Golan Heights and Its Relation to the Surrounding Arabian Platform

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