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Register a new userTectonic indices of basaltic dykes orientation in the southern Syrian Coastal Range
المؤشر التكتوني لتوجه الجدر البازلتية في جنوب السلسلة الساحلية السورية
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عبد الكريم العبد الله( باحث )
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بينت دراسة الوضعية الفراغية للجدر البازلتية الموجودة في جنوب السلسلة الساحلية السورية أن بعضها مرتبط بحوادث تكتونية شدية, كما في الجدر من عمر الألبيان, و بعضها الآخر مرتبط بحقل إجهاد إزاحي جانبي كما في الجدر من عمر البليوسين. تراوحت الجدر في اتجاهاتها من E-W إلى N-S مع اتجاه أعظمي º130 N- º145N. إن رسم حقل الإجهاد الإزاحي الجانبي بالاعتماد على توجه الجدر يظهر انحرافاً هاماً في اتجاه 1σ من NW-SE إلى E-W في جوار نطاق الصدع المشرقي خلال زمن البليوسين (4.4-5.4 مليون سنة).
The study of volcanic dykes geometry in the southern Syrian coastal range shows that some of them are related to a tensional tectonic event, Albian dykes, and others are related to a strike-slip stress field like Pliocene dykes. Orientation of dykes is average between E-W to N-S with maximal direction of N 130- N 145. Drawing of strike-slip stress field depending upon dykes orientation shows important deviation in σ1 strike from NW-SE to E-W in the vicinity of Levant fault during Pliocene time (4.4-5.4My)
References used
AL ABDALLA, A. Evolution Tectonique de la Plate-forme Arabe en Syrie depuis le Mésozoïque. Thèse Doct. Université de Paris6. (2008),302p
AL ABDALLA, A. ; MATAR, A. ; MULLER, C. Tectonic evolution of NW Syria. MEBE Meeting, Levant Groupe. 14-15 December 2006, Paris
ANDERSON, A. The Dynamics of Faulting and Dyke Formation with Application to Britain, Oliver and Boyd, Edinburgh, 1942, 206 p
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