نوع مقاله : مقاله پژوهشی

نویسندگان

1 دکترا، گروه زمین‌شناسی، دانشکده علوم، دانشگاه لرستان، خرم‌آباد، ایران

2 استاد، گروه زمین‎شناسی، دانشکده علوم، دانشگاه لرستان، خرم‌آباد، ایران

3 دانشیار، گروه زمین‎شناسی، دانشکده علوم، دانشگاه لرستان، خرم‌آباد، ایران

چکیده

چکیده: منطقه مورد مطالعه در زون البرز غربی-آذربایجان و 45 کیلومتری شمال شرق زنجان واقع است. سنگ های کوارتزمونزونیت و توف برش داسیتی میزبان اصلی کانسار لوبین –زرده میباشد. این سنگها با سرشت بیشتر کالک آلکالن پتاسیم بالا تا شوشونیتی، از نوع I ، متاآلومینوس و متعلق به سری منیزیمی از نوع کردیلرایی میباشد. سنگهای توده نفوذی غنی از عناصر LILE وLREE وتهی از عناصر HFSE،HREES ، MREES و Y هستند. شکل تقعر بطرف بالا ( Listric-shaped) نمودارالگوی عناصر نادر خاکی و نسبت میانگین La/Yb سنگ میزبان نشان دهنده مقدار آب بیشتر ،fO2 بالای ماگما و تفریق هورنبلند میباشد. مقادیر ISr نسبتا پایین تا متوسط7047/0-7051/0و مقادیر εNd(t=36Ma) برابر 39/0 تا 1/2 و سن های TDM از GM 69/0 – 06/1 با نسبت ایزوتوپی 206Pb/204Pb)i) برابر 49/18 – 68/18 ، 207Pb/204Pb)i) برابر 58/15 -61/15 و 208Pb/204Pb)i) برابر 33/38 – 77/، است. بر اساس شواهد بافتی، داده های ژئوشیمیایی و ایزوتوپی رادیوژنیک سنگهای میزبان کانسار لوبین-زرده با ترکیب ژئوشیمیایی سنگ میزبان کانسارهای پرفیری و اپی ترمال در زون ارومیه دختر، البرز غربی- آذربایجان(ارسباران) ،کانسار پانتدی ترکیه مطابقت دارد.

کلیدواژه‌ها

موضوعات

کتابنگاری
حسین‎زاده، م. ر.، مغفوری، س.، مؤید، م.، لطفه‎نیا. و حاج‎علیلو، ب.، 1394- سنگ‎شناسی، دگرسانی و کانه‎زایی رگه- رگچه ای چندفلزی (مس- سرب- روی) در منطقه لوبین- زرده شمال خاور زنجان. فصلنامه علوم زمین، سال بیست و چهارم، شماره 96، صص. 41 تا 52.
زمانیان، ح.، رحمانی، ش.، جاننثاری، م. ر.، زارعی سهامیه، ر. و برنا، ب.، 1394- بررسی کانی‏سازی مس- طلا گرانیتویید طارم (شمال زنجان) بر پایه شواهد کانی‎شناسی، ژئوشیمی و میانبارهای سیال. فصلنامه علوم زمین، سال بیست و پنجم، شماره 98، صص. 255 تا 282.
مؤید، م.، 1380- بررسی‎های پترولوژیکی نوار ولکانو- پلوتونیک ترشیری البرز باختری- آذربایجان با نگرشی بر منطقه هشتجین، رساله دکترای زمین‎شناسی دانشگاه تبریز، صص. 94 تا 125.
 
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