ورقة بحثية
Lithofacies Attributes of a Transgressive Carbonate System : The Middle Eocence Seeb Formation, Al Khoud Area, Muscat, Oman = خصائص ومميزات السحنات الصخرية في فترة طغيان البحر : دراسة تكوين السيب في منطقة الخوض بسلطنة عمان كمثال لهذا النظام الكربوناتي

Hersi, Osman Salad.


 

Lithofacies Attributes of a Transgressive Carbonate System : The Middle Eocence Seeb Formation, Al Khoud Area, Muscat, Oman = خصائص ومميزات السحنات الصخرية في فترة طغيان البحر : دراسة تكوين السيب في منطقة الخوض بسلطنة عمان كمثال لهذا النظام الكربوناتي

Hersi, Osman Salad.

The Seeb Formation (Middle Eocene) is an about 600 m thick transgressive carbonate succession deposited in the Batina and Muscat coastal region of Oman. The formation consists of five informal, but distinct units, and their stacking architecture suggests a deepening-upward, shallow marine depositional setting. Unit I is characterized by cross-bedded, sandy, bioclastic packstones to grainstones deposited in a high energy beach-to-intertidal environment. Unit II consists of indistinctly bedded, nodular, bioclastic (mainly larger foraminifera) packstones and wackestones deposited in a logoonal lagoonal environment. Unit III is defined by medium to thickly bedded, bioclastic packestones to grainstones and subordinate, laterally confined conglomerates. Prominent sedimentary structures in Unit III include hummocky and swaly cross-stratificiation, erosional surfaces, dewatering-induced deformations and laterally amalgamating beds. This unit represents sub-tidal sand shoals deposited in a storm-dominated shelf (between the fair-weather wave-base and storm-base). Unit IV is extensively burrowed, nodular, bioclastic wackestone to rudstone which is similar to Unit II in many aspects. Unit IV was deposited on the basinward side of the Unit III sand shoals below the reach of the storm-generated waves and currents. The uppermost Unit V is characterized by poorly-cemented bioclastic (large foraminiferal) rudstones with clay and silt-size quartz matrix. Bioclasts are generally intact with no apparent reworking. Deposition of Unit V is also envisaged as a low-energy, outershelf environment.

The Seeb Formation (Middle Eocene) is an about 600 m thick transgressive carbonate succession deposited in the Batina and Muscat coastal region of Oman. The formation consists of five informal, but distinct units, and their stacking architecture suggests a deepening-upward, shallow marine deposition...

مادة فرعية

المؤلف : Hersi, Osman Salad.

مؤلف مشارك : Al Harthy, Abdulrahman

بيانات النشر : Muscat، Sultanate of Oman : Sultan Qaboos Journal of Science، 2010مـ.

التصنيف الموضوعي : العلوم البحتة| .

المواضيع : Earth .

Rocks .

الأرض .

الصخور - الخوض(سلطنة عمان).

رقم الطبعة : 1

المصدر : Sultan Qaboos University : Muscat، Sultanate of Oman.

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