Keywords : Bashiqa


Morphotectonic Evidences for Strike-Slip Component of the Reverse Fault at the Southeastern Plunge of Bashiqa Anticline

Alaa Hamdon

Iraqi National Journal of Earth Science, 2020, Volume 20, Issue 1, Pages 15-23
DOI: 10.33899/earth.2020.170315

Sedimentary rock beds and drainage pattern offset took place predominantly at the southeastern plunge of Bashiqa anticline which indicates shear zone in this area represented by apparent left-lateral fault separation of reverse fault dipping to the southeast. This study will discuss and update the geological information of the impressions of the fault on the surface topography based on the morphotectonic evidences including visual interpretation of the satellite image for the landforms and regional stress analysis of the study area. The variations of landform features are regarded as an efficient geological indicator for tectonic activity in the area.

Structural and Tectonic Analysis of Bashiqa and AL-Fadhlya Anticlines- Northern Iraq

Ibrahim S. I. Al-Jumaily; Ahmad Gh. N. Al-Azzawi

Iraqi National Journal of Earth Science, 2018, Volume 18, Issue 1, Pages 87-116
DOI: 10.33899/earth.2018.159273

The present work includes structural analysis and synthesis of Bashiqa and AL-Fadhlya Anticlines, located (25) km northeast Mosul City – northern Iraq. These structures extend in NW – SE trend for about 25 km within the Foreland Fold Belt of Iraq.
Geometrical classification of these folds based on stereographic analysis refers that they were developed by horizontal compressive stress in NE – SW direction. Furthermore, Fourier analysis revealed that SW limbs of both folds are relatively more developed than their NE limbs. This might be ought to higher stress intensity developed within SW limbs of both Anticlines. Such a higher stress intensity expressed in further flexure of SW limbs a round secondary hinges, multi reverse slip faults in SW limb of Bashiqa Anticline, local overturning and minor folding in SW limb of AL-Fadhlya Anticline.
The study also revealed a marked variance in detachment depth and shortening percentage between these structures. Bashiqa is deeply detached and less shortened than AL-Fadhlya. Detachment depth variance might be attributed to inversely reactivation of two en – echelon arranged, varied depth, Foreland verged detached faults beneath Bashiqa and AL-Fadhlya folds. Inverse reactivation of these detachment faults during compressive phase led to differential folding and hence detachments of the two folds across a dextral subsurface strike slip fault transverse to these folds. The later one may play as an accommodation fault for differential reverse movement on the varied depth detachment faults beneath these folds. However, wide hinge area of Bashiqa Anticline, disruption of its both limbs by many reverse slip fault have contributed in depletion a considerable amount of shortening compared with AL-Fadhlya Anticline shortening.
التحمیل الترکیبی و التکتونی لطیتی بعشیقة والفاضمیة المحدبتین – شمالی الع ا رق 89
The structural model proposed here for Bashiqa and AL-Fadhlya Anticlines is
such that: the transversal subsurface strike slip faults (SF3, SF4 of Mutab, 2000) are
lateral ramps of Foreland verged detachment faults beneath these structures. The main
reverse slip faults on both limbs of Bashiqa fold and that one disrupting (SW) limb of
Maqlub Anticline, might linked at depth with the proposed main detachment fault
deep seated under Bashiqa structure. Inverse reactivation of this as well as the other
shallower under AL-Fadhlya Anticline together with resulting synthetic and antithetic
reverse slip faults have effectively contributed in folding process and its style in this
area.تتضمن الد ا رسة الحالیة طیتی بعشیقة والفاضمیة الواقعتان عمى بعد 25 کم شمال شرق مدینة الموصل
ضمن نطاق طیات الفورلاند فی الع ا رق. تمتد ىاتین الطیتین لمسافة حوالی 25 کم بأتجاه شمال غرب جنوب –
شرق. التحمیل الیندسی لمطیتین یشیر إلى أنیما قد تکونتا نتیجة اجیادات أفقیة قادمة من جیة الشمال الشرقی،
وان التحمیل الریاضی لمطی )تحمیل فوریر( یظیر بأن الجناح الجنوبی الغربی فی کل من الطیتین ىو أکثر
من الجناح الشمالی الشرقی، إذ ان شدة الإجیاد فی الجناح الجنوبی الغربی أدت إلى تکوین خط مفصل ˝ تطو ا ر
ثان لمطیتین فی ىذا الجناح، وکذلک إلى تعدد الفوالق العکسیة فی الجناح الجنوبی الغربی لطیة بعشیقة،
فضلا عن الانقلاب الموضعی لمطبقات وتکون طیات ثانویة فی بعض المواقع فی الجناح الجنوبی الغربی لطیة
الفاضمیة.
أ وظیرت الد ا رسة تباینا فی عمق سطح الانفصال ونسبة التقصیر بین طیتی بعشیقة
)أکثر عمقا واقل تقصی ا ر( و الفاضمیة )اقل عمقا وأکثر تقصی ا ر(. أوعز اختلاف عمق سطح الانفصال إلى
احتمال وجود فالقی انفصال فورلاندیی الاتکاء ومختمفی العمق ومفصولین تناسقیا بفالق مضربی. إن انعکاس
الحرکة عمى ىذین الفالقین فی فترة الانضغاط ساىم فی طی الطیتین بشکل أدى إلى انفصالیما عبر فالق
مضربی یمینی تحت سطحی مستعرض. وىو فالق توفیقی لمحرکة العکسیة عمى فالقی الانفصال المتباینین فی
العمق تحت الطیتین. إن تفاوت الطیتین من حیث الحجم قد یکون سبباً فی تباین نسب التقصیر بین الطیتین
)بعشیقة اکبر بکثیر من الفاضمیة(.
یشییییر المودییییل الترکیبیییی المقتیییرح فیییی الد ا رسیییة الحالییییة إلیییى أن الفیییالقین المضیییربیی الإ ا زحیییة تحیییت
السیطحیین ) SF3,SF4 ( ىمییا عبییارة عیین مصیطبتین جییانبیتین لفییالق الانفصییال الفورلانییدی الاتکیاء تحییت طیییة
بعشییقة. و قید تیرتبط الفوالیق المعکوسیة الرئیسیة فیی جنیاحی طییة بعشییقة والفیالق المعکیوس الیرئیس فیی الجنیاح
إب ا رىیم سعد إب ا رىیم ألجمیمی و أحمد غانم نایف الع ا زوی
88
الجنیوبی الغربیی لطییة مقمیوب فیی الأعمیاق میع فیالق الانفصیال الیرئیس. کمیا أسییم انعکیاس الحرکیة عمیى فیالق
الانفصال الرئیس وما نتج عنیا من فوالق عکسیة متوافقة وغیر متوافقیة بشیکل فعیال فیی عممییة الطیی وطی ا رزه فیی
طیتی بعشیقة والفاضمیة.

Mathematical Model of Ground Water Flow of Bashiqa Area,Northern Iraq

Taha H.Alsalim; Mahamad Faozy

Iraqi National Journal of Earth Science, 2004, Volume 4, Issue 2, Pages 84-98
DOI: 10.33899/earth.2004.37742

Models of ground water are one of most important techniques and powerful tools for solving problems or questions of ground water. Mathematical model was designed for the verification of ground water system in Bashiqa area northern Iraq which situated between latitude , and longitude , .
The total area involved in the mathematical model was 95km by using Finite Difference Method (FDM) for presenting the model. The results of model application was the determining ground water level in the study area and the direction of flow of ground water. The future behavior of ground water of the research area has been predicted, in the case of drilling new wells.