مقایسه چینه نگاری سکانسی و محیط رسوبی سازند آسماری در نواحی فارس، خوزستان و لرستان از حوضه زاگرس

رخساره‌های رسوبی

مقاله 4، دوره 7، شماره 1، شهریور 1393، صفحه 107-124   

نوع مقاله: مقالات پژوهشی

شناسه دیجیتال (DOI): 10.22067/sed.facies.v7i1.18648

نویسندگان

بهناز کلنات^{* 1}؛ حسین وزیری مقدم²؛ محمد وحیدی نیا¹

¹دانشگاه فردوسی مشهد

²دانشگاه اصفهان

چکیده

سازند آسماری توالی ضخیم کربناته ای در حوضه فورلند زاگرس می باشد که در زمان الیگوسن ـ میوسن پیشین نهشته شده است. به منظور تفسیر محیط رسوبی و چینه نگاری سکانسی، برش فیروزآباد با 4 برش از سازند آسماری در حوضه زاگرس مورد مقایسه قرار گرفته است. بررسی ریزخساره های موجود نشان دهنده چهار زیرمحیط رسوبی مختلف شامل پهنه جزرومدی، لاگون، پشته و دریای باز در سازند آسماری می باشد. این محیطهای رسوبی قابل تطابق با بخشهای رمپ داخلی، میانی و خارجی هستند. در برش فیروزآباد دو سکانس رسوبی درجه 3 بر اساس الگوهای عمیق و کم عمق شدگی ریزرخساره ها و الگوهای پراکندگی روزن داران الیگوسن تشخیص داده شد. این سکانسها با سکانسهای شناسایی شده در برشهای دهلران، معمولان، دیل و تنگ آب جهرم تطابق داده شدند.

کلیدواژه‌ها

الیگوسن؛ میوسن پیشن؛ چینه نگاری سکانسی؛ سازند آسماری؛ حوضه فورلند زاگرس

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