Geometry of Khalakan Anticline, Northeastern Iraq

Ward, Ayyed Hussein; Al-Kubaisi, Manal Shakir

doi:10.25130/tjps.23.2018.034

“…The values of the specific gravity ranged 2.477 -2.684. The maximum dry density ranged between 1.962 and 2.011 g/cm 3 , with an optimum moisture content of 11.5% to 13.5%, which is higher than the minimal limit of 1.7 g/cm 3 required by the Iraqi specification. The value of cohesion ranged 9-37 kN / m2 and the friction angle value ranged 15-22 ˚.…”

Section: -Conclusionmentioning

confidence: 74%

“…The liquid limit and plastic limit tests were performed using a Casagrande device, according to a previously described method [10]. The results listed in table (3) show that the liquid limit values ranged 28.84% -40.63%, while the plastic limit values ranged 15.95% -25.30% . According to the general specifications of roads and bridges (SORP / R5) [11], the clays used as raw materials in the construction of embankment dams should not exceed a liquid limit of 55% and plastic limit of 30%, whereas the plasticity index must be between 10 and 20%.…”

mentioning

confidence: 99%

“…The same results for station 4 were 2.011 g/cm 3 and 13.5%, respectively (Figure -4). Based on the SORP / R5 [11], clays used in embankment soils, in the form of beds not exceeding 25 cm in thickness, should have maximum dry density in the final bed compaction that is not lower than 1.7 g/cm 3 . Accordingly, Gercus formation clays are suitable for use as raw materials in the construction of embankment dams.…”

mentioning

confidence: 99%

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Evaluation of Suitability of Red Clay from Selected Areas of Gercus Formation, Sulaimaniyah, North Iraq, for the Construction of Embankment Dams

Hussain

¹

,

Ibraheem

²

2021

eijs

0

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In this research, a geotechnical assessment was conducted for clay of the Gercus Formation to determine its suitability for embankment dams. The selected area is located in the north of Iraq. Six samples were collected from two sites in Dokan (Sulaimaniyah) and Haibat Sultan mountain (Koysinjaq), three samples each. Various geotechnical (physical, mechanical and chemical) tests were conducted based on standard specifications. The results of the grain size test of clay samples showed their conformity with Zone C curves and their suitability for the construction of embankment dams, according to the Iraqi standard for roads and bridges. The results of the plasticity limits test showed that the soil is made of fine, low plasticity silt (ML), and low plasticity clay (CL), according to the unified standard soil classification. The water content and plasticity limit tests (liquid limit, plastic limit, and plasticity index) demonstrated that these clays are conformable with the limits of the Iraqi standards. The results of the modified compaction test found a maximum dry density value of 1.962 g/cm3 with an optimum moisture content of 11.5%. The results of the permeability index (K) revealed low permeability according to the Das classification and, therefore, showed the suitability of the samples as raw filling materials in the construction of dams. Chemical tests (sulfate content, organic materials content, total dissolved salts, gypsum content, and pH value) showed compatibility with the requirements for the use in dams construction under the Iraqi standard (SoRB/ R5).

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“…8). [17] described N-Bazian and Beramagroon as asymmetrical anticlines have dip amount of NE limbs more than dip amount of their SW limbs, and subsequently [18], [19], [20], [21], [22], [23] and [24] described Permam, Bani Bawi, Bekhair, Brefka, Makook, Kosrat , and korek with Bradost as asymmetrical anticlines have dip amount of NE limbs less than the dip amount of their SW limbs respectively, while [25], [19], [26], [27], [22], [24], [28] and [29] described Perat, Shakrook and Safeen, Dohuk, Shaikhan, Piris, Harir, Khalakan, and Qara Serd as asymmetrical anticlines have dip amount of NE limbs more than the dip amount of their SW limbs respectively.…”

Section: General Description Of Folds In Northern Iraqmentioning

confidence: 99%

Variation of the Anticlines Vergency in the Iraqi Zagros Folds Belt and Its Tectonic Indications

Ward¹,

Fahmi²,

Khalaf³

2020

Tikrit J. Pure Sci.

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Folds of northern Iraq are considered integral part for the Western Zagros Fold – Thrust Belt. The growth of these folds was due to inversion displacement on inherited listric faults. This research deal with the relationship between the folds vergency and the faults that propagated folds, where that the dip of the back limb (gentle limb) for the fold is parallel to the thrust fault surface that propagated the fold, and the vergency of the fold determined by the forelimb (steep limb) situation. As a results, the folds of the high folded zone and of the western part of the low folded zone showed suture ( N and NE) vergency and foreland (S and SW) vergency, while the eastern part of the low fold zone showed foreland (S and SW) vergency only. The appearance of the suture and foreland vergency within the high folds considered as indication to the high tectonic development conformable with the location of these folds in the Iraqi Zagros Fold Belt, while the appearance of the suture and foreland vergency in the western part of the low folded zone attributed to the more tectonic development of this part in comparison with the eastern part of the zone that there folds appeared foreland vergencies only, or to the influence of the evaporite beds for Fatha formation in this part. http://dx.doi.org/10.25130/tjps.25.2020.031

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“…8). [17] described N-Bazian and Beramagroon as asymmetrical anticlines have dip amount of NE limbs more than dip amount of their SW limbs, and subsequently [18], [19], [20], [21], [22], [23] and [24] described Permam, Bani Bawi, Bekhair, Brefka, Makook, Kosrat , and korek with Bradost as asymmetrical anticlines have dip amount of NE limbs less than the dip amount of their SW limbs respectively, while [25], [19], [26], [27], [22], [24], [28] and [29] described Perat, Shakrook and Safeen, Dohuk, Shaikhan, Piris, Harir, Khalakan, and Qara Serd as asymmetrical anticlines have dip amount of NE limbs more than the dip amount of their SW limbs respectively.…”

Section: General Description Of Folds In Northern Iraqmentioning

confidence: 99%

Variation of the Anticlines Vergency in the Iraqi Zagros Folds Belt and Its Tectonic Indications

Ward¹,

Fahmi²,

Khalaf³

2020

Tikrit J. Pure Sci.

0

View full text Add to dashboard Cite

Folds of northern Iraq are considered integral part for the Western Zagros Fold – Thrust Belt. The growth of these folds was due to inversion displacement on inherited listric faults. This research deal with the relationship between the folds vergency and the faults that propagated folds, where that the dip of the back limb (gentle limb) for the fold is parallel to the thrust fault surface that propagated the fold, and the vergency of the fold determined by the forelimb (steep limb) situation. As a results, the folds of the high folded zone and of the western part of the low folded zone showed suture ( N and NE) vergency and foreland (S and SW) vergency, while the eastern part of the low fold zone showed foreland (S and SW) vergency only. The appearance of the suture and foreland vergency within the high folds considered as indication to the high tectonic development conformable with the location of these folds in the Iraqi Zagros Fold Belt, while the appearance of the suture and foreland vergency in the western part of the low folded zone attributed to the more tectonic development of this part in comparison with the eastern part of the zone that there folds appeared foreland vergencies only, or to the influence of the evaporite beds for Fatha formation in this part.

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Geometry of Khalakan Anticline, Northeastern Iraq

Cited by 3 publications

References 1 publication

Evaluation of Suitability of Red Clay from Selected Areas of Gercus Formation, Sulaimaniyah, North Iraq, for the Construction of Embankment Dams

Evaluation of Suitability of Red Clay from Selected Areas of Gercus Formation, Sulaimaniyah, North Iraq, for the Construction of Embankment Dams

Variation of the Anticlines Vergency in the Iraqi Zagros Folds Belt and Its Tectonic Indications

Variation of the Anticlines Vergency in the Iraqi Zagros Folds Belt and Its Tectonic Indications

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