A Sedimentological and Paleontological review on Al Faidiyah Formation at Daryanah, in Al Jabal al Akhdar, Libya
| المصدر: | المجلة الجامعة |
|---|---|
| الناشر: | جامعة الزاوية - مركز البحوث والدراسات العليا |
| المؤلف الرئيسي: | Khalifa, Ali K. (Author) |
| مؤلفين آخرين: | El Menefy, Ahmed R. (Co-Author) , El Hassi, Mohammed F. (Co-Author) , Mostafa, Mostafa F. (Co-Author) |
| المجلد/العدد: | مج23, ع3 |
| محكمة: | نعم |
| الدولة: |
ليبيا |
| التاريخ الميلادي: |
2021
|
| الشهر: | سبتمبر |
| الصفحات: | 153 - 166 |
| رقم MD: | 1263624 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | EduSearch, EcoLink, IslamicInfo, AraBase, HumanIndex |
| مواضيع: | |
| كلمات المؤلف المفتاحية: |
Foraminifer. | Al Abyar Road-Cut. Al Faidiyah. | Libya | Daryanah | Biostratigraphy
|
| رابط المحتوى: |
الناشر لهذه المادة لم يسمح بإتاحتها. |
| المستخلص: |
The studied Al Faidiyah Formation at Daryanah-Al Abyar road-cut sequence is bounded by two erosional surfaces with the overlying Benghazi Formation and the underlain Al Abraq Formation. The formation is comprised of three units started with glauconitic clay at the base, followed by Operculinid-Lepidocyclinid marly limestone intercalated by clay unit. The overall Al Faidiyah sequence is represented by four shallowing upward cycles. Micropalentologically, four benthic foraminferal species have been recognized (large benthic foraminifera, Operculina complanata, Lepiboccyclina dilatata, Heterostegina sp. and Nummulites fichteli), together with planktonic foraminiferal representative (Globigerina ciperoensis and Cassigerinella chipolensis). Other macrofuna include bryozoans, pelecypods (Chlamys sp., Spondylus sp. Oysters sp. and Pecten sp.) and fragments of echinoids (plates and spines). The depositional environment of Al Faydiah Formation accordingly, has been interpreted as open to confined platform, which corresponding to facies SMF-7 and SMF-8. The problem of the reworking was discussed herein from Al Faidiyah as the retrieved Nummulites from Al Faidiyah Formation is confirmed as reworked elements, due to: i) the existence of only A-Form, ii) discolored, corroded tests, iii) abraded test peripheral margin and iv) tests filled partially by glauconites. |
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