دوره 32، شماره 4 - ( 10-1403 )                   جلد 32 شماره 4 صفحات 772-759 | برگشت به فهرست نسخه ها

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Jalali N, Shabanian N, Davoudian A, Bendokht M. Textural features indicating brittle-ductile deformation in Tutak mylonitic leucogranite, northeast of Shiraz, Sanandaj-Sirjan Zone. www.ijcm.ir 2024; 32 (4) :759-772
URL: http://ijcm.ir/article-1-1910-fa.html
جلالی نوید، شبانیان ناهید، داودیان علیرضا، بندخت مریم. ویژگی‌های بافتی نشانگر دگرشکلی شکنا-شکل‌پذیر در ‌لوکوگرانیت میلونیتی توتک، شمال شرق شیراز، پهنه سنندج-سیرجان. مجله بلورشناسی و کانی شناسی ایران. 1403; 32 (4) :759-772

URL: http://ijcm.ir/article-1-1910-fa.html

ویژگی‌های بافتی نشانگر دگرشکلی شکنا-شکل‌پذیر در ‌لوکوگرانیت میلونیتی توتک، شمال شرق شیراز، پهنه سنندج-سیرجان
نوید جلالی1 ، ناهید شبانیان*1 ، علیرضا داودیان1 ، مریم بندخت1
1- دانشکده منابع طبیعی و علوم زمین، دانشگاه شهرکرد، شهرکرد، ایران
چکیده:   (736 مشاهده)
مجموعه ماگمایی-دگرگونی کوه سفید توتک، بخشی از پهنه ساختاری دما پایین-فشار بالای سنندج-سیرجان و دربردارنده سنگ‌های دگرگونی ارتوگنیس، متاگرانیت، آمفیبولیت، میکاشیست، مرمر و لوکوگرانیت میلونیتی است. کانی­های اصلی لوکوگرانیت­ها شامل کوارتز، فلدسپار، پلاژیوکلاز، بیوتیت، مسکویت فنژیتی و کانی­های فرعی تورمالین، آمفیبول، تیتانیت، روتیل، زیرکن، اپیدوت، کلینوزئیزیت، زوئیزیت، آلانیت، گارنت، هماتیت (اکسید آهن) و کلریت هستند. شواهد دگرشکلی شامل چین­خوردگی، برگوارگی و خطوارگی و شواهد سنگ نگاری چون خمیدگی و ساختار پلکانی در کانی پلاژیوکلاز و ریزساختار بازتبلور پویا از نوع برآمدگی مرزهای دانه، چرخش ریزدانه، مهاجرت مرز دانه­ای و کاهش ناحیه مرزدانه (در کانی کوارتز) و همچنین ریزساختارهایی از جمله زبانه­ای، میخکوبی و پنجره­ای در لوکوگرانیت­ها و مجموعه سنگ­های آذرین-دگرگونی پهنه سنندج-سیرجان نشان­دهنده اثر دگرشکلی پویا در حد رخساره شیست سبز تا آمفیبولیت در گستره دمایی 250 تا 700 درجه سانتی­گراد در شرایط دگرشکلی شکنا-شکل­پذیر در پهنه هستند. شواهد فابریکی اغلب راستای برش راست­بر را نشان می­دهند.
واژه‌های کلیدی: مجموعه توتک، پهنه سنندج-سیرجان، لوکوگرانیت، دگرشکلی، کوارتز.
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نوع مقاله: پژوهشي | موضوع مقاله: تخصصي
فهرست منابع
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