نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکترا، گروه زمین‎شناسی، دانشگاه آزاد اسلامی، واحد تهران شمال، تهران، ایران

2 استادیار، گروه زمین‎شناسی، دانشگاه تحصیلات تکمیلی علوم پایه، زنجان، ایران

3 استادیار، گروه زمین‎شناسی، دانشگاه آزاد اسلامی، واحد تهران شمال، تهران، ایران

4 استادیار، گروه زمین‎شناسی، دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران

5 کارشناسی ارشد، گروه زمین‎شناسی، دانشگاه آزاد اسلامی، واحد اصفهان (خوراسگان)، اصفهان، ایران

چکیده

در این پژوهش توالی­های کربناته تورنزین- ویزین در برش­­­های تنگ دارچاله و بناریزه، در حوضه اصفهان- سیرجان جهت انتخاب مدل رخساره­ای مورد مطالعه قرار گرفته است. بر اساس بررسی­های دقیق رخساره­ای و توالی برانبارش آنها، 4 کمربند رخساره­ای شامل محیط­های حوضه­ای و رمپ بیرونی ( FA1وFA2 : توالی­های رخساره­ای ساب­تایدال عمیق)، رمپ میانی (FA3, FA4, FA6: توالی­های رخساره­ای ساب­تایدال کم‎عمق و اینترتایدال میانی) و رمپ داخلی (FA5: توالی­های سد ماسه­ای) در نهشته­های مذکور شناسایی شده است. تبدیل تدریجی رخساره­ها و دسته‌رخساره­های شناسایی شده به­ه مراه پروفیل رسوبی و الگوی برانبارش طرح­های رسوبی در دسته رخساره­های موجود حاکی از ته­نشینی این رسوبات در پلاتفرم کم‌عمق کربناته رمپ از نوع کم‌زاویه دارد که تحت تأثیر نوسانات امواج و طوفان با الگوی کلی پیشرونده از دسته‌رخساره­های پروکسیمال به دیستال حوضه تبدیل می­شود. این مطالعه پیشنهاد می­کند که در طول کربنیفر پیشین یک پلاتفرم کربناته کم‌عمق گسترده اپی­ریک در حاشیه جنوبی پالئوتتیس گسترش یافته است.

کلیدواژه‌ها

کتابنگاری
شیره‎زاده اصفهانی، ف.، 1394- تکوین حوضه رسوبی کربنیفر در بلوک اصفهان- سیرجان براساس ویژگی­های محیط رسوبی و چینه نگاری سکانسی، رساله دکترا، دانشگاه آزاد واحد تهران شمال، گروه زمین‎شناسی، 245 ص.
نورالدینی، م.، 1387- زیست‎چینه‎نگاری، میکروفاسیس و محیط­های رسوبی نهشته­های کربنیفر در مقطع بناریزه، شمال خاور آباده، پایان‌نامه کارشناسی ارشد،‌ دانشگاه اصفهان، گروه زمین‎شناسی، 120 ص.
نورالدینی، م.، یزدی، م.، عاشوری، ع. و رحمتی، س.، 1394- عناصر اسکلریت هولوتورین­های کربنیفر پیشین در برش بناریزه، جنوب خاوری اصفهان، فصلنامه علوم زمین، سازمان زمین‎شناسی، شماره 95، صص. 165 تا 174.
 
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