صخور السينيت النيفليني في قسطل المعاف نحو فهم أفضل لجيولوجية منطقة الباير- البسيط

One of the most manifest and distinguished geological record of Mesozoic deep-water sedimentation and volcanism, preserved along the Arabian continental margin, is the Baer–Bassit region, northwestern Syria. Nepheline Syenite rocks in Qastal Maaf form a disrupted thrust sheet, covered by thrust sheet of Peridotite, belongs to ophiolitec Baer block. Compositionally, these rocks consist of plageoclase, feldspre and alkaline minerals and reflects the alkaline nature of these rocks. the chemical analysis supports this nature by presence a high ratio of Na ,K oxides and rare earth elements, which confirm the mantel origin of these rocks.