Study of Joints in Baba Dome - NE Iraq

  • M. AL-Lehaibe A
  • B. Deikran D
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Abstract

The present work involves detailed study for joints in Baba dome within the foreland fold belt of north Iraq. It aims to identification and classification of various joint sets and systems, extraction predominant directions of joint sets and systems and estimation stress direction in the study area. The study includes only Injana (Miocene) and Mukdadiya (Pliocene) formations. The field work has been executed by means of nine traverses, each of them includes mainly two stations, as a result, 719 measurements of joint planes were extracted. The study comprises several categories: carefully scanning the joint plane for any shear movement, measuring the attitude, classification of joints according to tectonic axes a, b and c, determining the predominant direction, calculation of causative stress, estimation the structural history of Baba Dome .The types of joint which distinguished are (ab, bc, ac, hko system acute about a, hko set acute about b, hol system acute about a and hkl set).All measured joints have no visible shear displacement on their planes. The hko system and hol system appeared as single set and as conjugate system. The predominant direction of the joints is determined to be nearly along the strike of exposed beds. The mean causative stress direction is calculated to be: 046° from hko system and 315° from hol system. Trend of measured joints (ab = 315° , ac = 045° , bc = 315° , hko 1 >a = 058° , hko 2 >a = 033° , hko 3 >b = 336° , hol 1 >a = 316° , hol 2 >a = 312° and hkl = 257°). An attempt to put the measured joints in order according to timing sequence and from older to younger: hko system acute about a &ac set, hol system acute about a and hko system acute about b &bc set. 1 ، ‫المهيبي‬ ‫محمد‬ ‫الكريم‬ ‫عبد‬ 2 ‫الز‬ ‫كمية‬ / ‫بة‬ ‫التر‬ ‫قسم‬ ‫كركوك‬ ‫جامعة‬ / ‫اعة‬ ‫ر‬ 1 Duraid337@gmail.com 1 ‫كركوك‬ ‫جامعة‬ /‫العموم‬ ‫كمية‬ /‫التطبيقية‬ ‫الجيولوجيا‬ ‫قسم‬ 2 abdulkareem44m@gmail.com 2 :‫البحث‬ ‫استالم‬ ‫تاريخ‬ 20 / 10 / 2012 ‫قب‬ ‫تاريخ‬ :‫البحث‬ ‫ول‬ 23 / 2 / 2016 ‫الممخص‬ ‫شمال‬ ‫في‬ ‫الند‬ ‫الفور‬ ‫طيات‬ ‫ام‬ ‫حز‬ ‫ضمن‬ ‫اقعة‬ ‫الو‬ ‫بابا‬ ‫قبة‬ ‫في‬ ‫اصل‬ ‫لمفو‬ ‫تفصيمية‬ ‫اسة‬ ‫در‬ ‫الحالي‬ ‫العمل‬ ‫يتضمن‬ .‫اق‬ ‫العر‬ ‫تهدف‬ ‫السائدة‬ ‫االتجاهات‬ ‫وتحديد‬ ‫انظمة‬ ‫و‬ ‫مجاميع‬ ‫الى‬ ‫وتصنيفها‬ ‫اصل‬ ‫الفو‬ ‫تحديد‬ ‫الى‬ ‫اسة‬ ‫الدر‬ ‫ثم‬ ‫لها‬ ‫تخمين‬ ‫الجهد‬ ‫اتجاه‬ ‫تكوينه‬ ‫في‬ ‫المسبب‬ ‫منطقة‬ ‫في‬ ‫ا‬ .‫اسة‬ ‫الدر‬ ‫تت‬ ‫كشف‬ ‫من‬ ‫اعمارها‬ ‫امتدت‬ ‫التي‬ ‫الجيولوجية‬ ‫التكوينات‬ ‫اسة‬ ‫الدر‬ ‫منطقة‬ ‫في‬ ‫الى‬ ‫االقدم‬ ‫من‬ ‫وهي‬ ‫الباليوسين‬ ‫الى‬ ‫المايوسين‬ ‫عصر‬ :‫االحدث‬ ،‫الفتحة‬ ‫الحقمي‬ ‫العمل‬ ‫.انجز‬ ‫حسن‬ ‫وباي‬ ‫انجانة،المقدادية‬ ‫خالل‬ ‫من‬ ‫اختيار‬ ‫ات‬ ‫مسار‬ ‫تسعة‬ ‫و‬ ‫محطتين‬ ‫يتضمن‬ ‫مسار‬ ‫كل‬. ‫تم‬ ‫قياس‬ 917 ‫لمستويات‬ ‫اءة‬ ‫قر‬ .‫اصل‬ ‫الفو‬ ‫اشتممت‬ ‫الحقمية‬ ‫اسة‬ ‫الدر‬ ‫عمى‬ ‫اصل‬ ‫لمفو‬ ‫اصل‬ ‫الفو‬ ‫مستويات‬ ‫عمى‬ ‫قصية‬ ‫حركة‬ ‫اي‬ ‫عن‬ ‫التحري‬ ‫و‬ ‫اصل‬ ‫الفو‬ ‫مستويات‬ ‫وضعية‬ ‫قياس‬ ‫و‬ (‫التكتونية‬ ‫المحاور‬ ‫عمى‬ ‫اعتمادا‬ ‫اصل‬ ‫الفو‬ ‫تصنيف‬ a ، b ‫و‬ c .) ‫تم‬ ‫االتجاهات‬ ‫تحديد‬ ‫السائدة‬ ‫اتجاه‬ ‫وحساب‬ ‫الجهد‬ ‫المسبب‬ ‫ال‬ ‫وتخمين‬ ‫تاريخ‬ ‫قصية‬ ‫احة‬ ‫از‬ ‫اي‬ ‫وجود‬ ‫بعدم‬ ‫تتمثل‬ ‫الحالية‬ ‫اسة‬ ‫الدر‬ ‫افرزتها‬ ‫التي‬ ‫النتائج‬ ‫ان‬ .‫بابا‬ ‫لقبة‬ ‫التركيبي‬ ‫اصل‬ ‫الفو‬ ‫مستويات‬ ‫عمى‬ ‫سجمت‬ .‫المقاسة‬ (‫اصل‬ ‫الفو‬ ‫مجاميع‬ ac,bc,ab (‫ونظام‬) hko ‫المحور‬ ‫حول‬ ‫الحاد‬) a ‫نسبا‬ (‫بنظام‬ ‫مقارنة‬ ‫عالية‬ hol ‫المحور‬ ‫حول‬ ‫الحاد‬) a (‫ونظام‬ hko ‫الح‬) ‫المحور‬ ‫حول‬ ‫اد‬ b (‫اصل‬ ‫فو‬ ‫اما‬ ، hkl ‫فقد‬) ‫نظام‬ ‫يظهر‬. ‫جدا‬ ‫قميمة‬ ‫بنسبة‬ ‫سجمت‬ ‫ي‬ (hko ‫و‬ hol) ‫مقترن‬ ‫بشكل‬. ‫منفردة‬ ‫مجموعة‬ ‫بشكل‬ ‫او‬ ‫االتجاه‬ ‫ان‬ ‫تقري‬ ‫يحاذي‬ ‫اصل‬ ‫لمفو‬ ‫السائد‬ ‫المتكشفة‬ ‫الطبقات‬ ‫مضرب‬ ‫اتجاه‬ ‫با‬ ‫نظام‬ ‫من‬ ‫المحسوب‬ ‫الرئيسي‬ ‫الجهد‬ ‫اتجاه‬ ‫ان‬. hko ‫هو‬ ‫المقترن‬ 46.15° 0 ‫نظام‬ ‫من‬ ‫المحسوب‬ ‫االتجاه‬ ‫و‬ ، hol ‫هو‬ ‫المقترن‬ 315°. ‫المدروسة‬ ‫اصل‬ ‫الفو‬ ‫اتجاهات‬ ‫كانت‬ 28 (‫كاالتي‬ (ab = 315° , ac = 045° , bc = 315° , hko 1 >a = 058° , hko 2 >a =033° , hko 3 >b = 336° , hol 1 >a = 316° , hol 2 >a = 312° and hkl = 257° .) ‫عمى‬ ‫اعتمادا‬ ‫اصل‬ ‫الفو‬ ‫صنفت‬ ‫ا‬ ‫الى‬ ‫االقدم‬ ‫من‬ ‫وهي‬ ‫الزمني‬ ‫لتسمسل‬ :‫االحدث‬ ‫نظام‬ hko ‫حول‬ ‫الحاد‬ a ‫ومجموعة‬ ac ‫نظام‬ ، hol ‫حول‬ ‫الحاد‬ a ، ‫نظام‬ hko ‫حول‬ ‫الحاد‬ b ‫ومجموعة‬ bc. ‫الكممات‬ ‫الدالة‬ : ‫االجهاد‬ ،‫القديم‬ ،‫اصل‬ ‫الفو‬ ‫مجموعة‬ ،‫االجهاد‬ ، ‫نظام‬ .

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CITATION STYLE

APA

M. AL-Lehaibe, A., & B. Deikran, D. (2016). Study of Joints in Baba Dome - NE Iraq. Kirkuk University Journal-Scientific Studies, 11(3), 26–37. https://doi.org/10.32894/kujss.2016.124654

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