| Petrographic of Northwestern Sudan |
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| 引用本文： | NafiM Abdullatif0M. Petrographic of Northwestern Sudan[J]. 中国地质大学学报(英文版), 2003, 14(2): 137-143 |
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| 作者姓名： | NafiM Abdullatif0M |
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| 作者单位： | [1]FacultyofEarthResources,ChinaUniversityofGeosciences,Wuhan430074 [2]DepartmentofGeology,FacultyofScience,UniversityofKhartoum,Sudan |
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| 摘 要： | The sedimentology of the Northwestern Sudan consists of lower, middle and upper cycles. The lower and upper cycles are composed of intercalated fluvial and shallow marine facies, whereas the middle cycle consists entirely of fluvial and glaciofluvial facies. The petrographic analysis shows that the lower and upper cydes consist of quartz and lithic arenite sandstones, whereas the middle cycle consists of arkosic and lithic arenite sandstones. The lower and upper cycle sandstones reflect derivation mainly from recycled orogens with minor contribution from craton interior provenances. However, the middle cycle sandstones indicate derivation from basement uplift, transitional and mainly recycled orogens provenances.
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| 关 键 词： | 岩相学 沉积学 海冰 砂岩 循环造山 苏丹 |
Petrographic of Northwestern Sudan |
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| Nafi M,Abdullatif O M. Petrographic of Northwestern Sudan[J]. Journal of China University of Geosciences, 2003, 14(2): 137-143 |
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| Authors: | Nafi M Abdullatif O M |
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| Abstract: | The sedimentology of the Northwestern Sudan consists of lower, middle and upper cycles. The lower and upper cycles are composed of intercalated fluvial and shallow marine facies, whereas the middle cycle consists entirely of fluvial and glaciofluvial facies. The petrographic analysis shows that the lower and upper cycles consist of quartz and lithic arenite sandstones, whereas the middle cycle consists of arkosic and lithic arenite sandstones. The lower and upper cycle sandstones reflect derivation mainly from recycled orogens with minor contribution from craton interior provenances. However, the middle cycle sandstones indicate derivation from basement uplift, transitional and mainly recycled orogens provenances. |
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| Keywords: | glaciofluvial recycled orogen marine facies. |
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