نوع مقاله : مقاله پژوهشی
نویسنده
گروه زمین‌شناسی، دانشکده علوم زمین، دانشگاه شهید چمران اهواز، اهواز، ایران
چکیده
در این پژوهش، با استفاده از نودول‌های چرتی موجود در واحدهای آهکی سازند سروک در تاقدیس پیون به بررسی کمی مقادیر کرنش در بخش‌های مختلف این تاقدیس پرداخته شده است. در راستای یک پیمایش عمود بر محور، تاقدیس به 7 محدوده متفاوت تقسیم گردید. در هر محدوده حداقل 40 نودول چرتی مورد اندازه‌گیری قرار گرفت. نتایج حاصل از مطالعات کرنش نشان دهنده افزایش مقادیر کمی کرنش از یال‌های چین (Rs=1.7) به لولای چین (Rs=2.9) می‌باشد. تحلیل مقادیر عدد جنبش شناحتی تاوایی نشان‌دهنده دامنه تغییرات پارامتر تاوایی بین 0.91>l 0.68<Wk و عملکرد مؤلفه‌های کرنش برش محض و برش ساده و رخداد پدیده تفکیک کرنش در تاقدیس پیون است. مقادیر عدد جنبش شناختی تاوایی گویای افزایش مؤلفه‌های کرنش برش محض در بخش‌های لولای چین و غلبه مؤلفه‌های کرنش برش ساده در یال‌های تاقدیس پیون می‌باشد. بررسی نتایج حاصل از تحلیل‌های کرنش گویای رخداد کوتاه شدگی پیکری بین 47 تا 50 درصد در تاقدیس پیون می‌باشد.
کلیدواژه‌ها
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