Abstract: This paper tackles engineering properties of rocks and stress distribution around the assumed tunnel at the proposed site of the Sheikh Ibrahim Tunnel, South Jazirah Irrigation Project, North of Iraq. A full description has been obtained depending on available records, that taken from the executed soil investigation reports of the project. The investigations were done in two stages: the first was the field investigation and the second was the laboratory. The rock mass in Sheikh Ibrahim tunnel mainly consists of evaporite, carbonate, and clastic rocks (marl, sandstone and claystone). Engineering properties have been determined and evaluated through (13) boreholes as previously mentioned in the records and then to establish the preliminary design of the tunnel. The data of (129) rock samples, that conclude laboratory testing (mechanical, dynamical, physical) and field testing ( study of fractures and permeability test), have been used in stress and distribution analysis around the assumed 10 meters diameter tunnel by using the two dimensional finite element analysis program.

Abstract: Analysis of brittle failure structures carried out throughout a traverse across Azmur Anticline, NE Iraq. This includes widespread joints, mesofaults, planar and enechelon vein arrays and pressure solution surfaces ( stylolite seams ). The aim of this work is for unraveling the tectonic history and detecting tectonic episodes responded for the initiation and modification of such brittle failure structures.Field observations and analysis revealed two subsequent compressive phases. The oldest trending ENE-WSW is normal to the Azmur fold axis, while the second is parallel to it. These directions ascertained by paleostress tensors deduced from slip analysis of striated mesofaults. Reorientation of stress regime from first compressive phase to the second has been attributed to the progressive oblique collision of Arabian and Eurasian plates. Furthermore, a final stretching phase in NE-SW direction had been deduced. This extensional phase which ought to the uplifting stage of fold structure is responsible for bedding parallel stylolite seams with vertical peaks, and normal slip faulting in the studied area.

Abstract: Planktonic foraminifera is studied from Shiranish Formation in Makhmur well No. (1), North Iraq between the depth interval (657-620) m. Three biostratigraphy Zones are recognized in these formation: 1. Globotruncanita elevata–Rosita fornicata Zone. 2. Globotruncana aegyptiaca Zone. 3. Gansserina gansseri Zone. 20 عبد الله سلطان شهاب الحدیدی The results of this study are compared with the work of others inside and outside Iraq. The age of the Shiranish Formation in the said well is Late Companian to Early Maastrichtian.

Abstract: ABSTRACT Four new ostracod species belonging to the genus Cytherella Jones, 1849 described from the Upper Cretaceous succession of Hamrin area NE Iraq namely: Cytherella shiranishensis sp. nov; ; C. iraqiensis sp. nov.: C. mushoriensis sp. nov.; and C. kirkukiensis sp. nov. Keywords: Ostracoda; Cytherella; Cretaceous; Iraq.

Abstract: Stratigraphic units during Lower Cretaceous in southern of Iraq were affected largely by tectonic agent. Neo-Tethys ocean occupied the distance between passive margins of Arabian and Iranian plates. South of Iraq represented the continental shelf of passive margin of Arabian plate. This tectonic situation made the sediments in eastern parts of passive margin in south of Iraq effected by marine agents, and the sediments in western parts was effected by continental agents, whereas the middle parts was effected by both agents. As result of that, three sediment regions were formed in south of Iraq. First, marine sediment region that occupy the eastern part of south of Iraq near the Iraq-Iran borders. Second, mixed sediment region that occupy Basra area and extend toward north. Third, continental sediment region that occupy western part of Basra near the western desert. Half graben basins that formed by listric faults in the passive margin caused the local changes in distribution of sediments in south of Basra. These three sediment regions formed all during Lower Cretaceous and maybe extend toward the middle of Iraq and north of Baghdad

Abstract: Sulphur is produced at Mishraq mine by hydrodynamic method (modified Frasch method) of injecting super – heated water 165؛C through a special well in to the sulphur horizons to melt the sulphur underground. A seepage of super–heated water at 132؛ C to the Tigris River has been noticed, which cause drop in deposit pressure as well as polluting the river water. A drop of sulphur productivity has also been noticed in some regions of the mine despite of their content of high sulphur percentage, and injection of huge quantities of hot water.Hydraulic barriers were located according to the transmissibility and temperature distribution maps. The barriers consist of wells especially designed for injection of cold water down to the sulphur horizons. The barriers were shown to be very effective in increasing the ground water pressure and decreasing the hot water seepage to the river, and dropped the general hot water factor (m3 water/1ton sulphur), from 20.0 to 12.0; besides, the productivity of sulphur increased from 1.5 ton/hr to 5 ton/hr.

Abstract: The present work, deals with hydrochemistry and water quality of some shallow wells in Wana area, northern Iraq and its validity for irrigation, through the physical and chemical analyses of 13 water samples selected from these wells distributed in the study area. حازم جمعة محمود 46 The results revealed that there are two factors controlling the hydrochemistry of water in the area. The first is natural factor represented by type of rock components of the studied area, and the second is anthropogenic factor which is human activities. Owing to the natural factor, the analyzed water tend to be of non carbonate hardness by the influence of the evaporates of Fat'ha formation. Despite the great influence of Fat'ha formation rocks on water quality in the area, however the direct feeding of Tigris river to the well waters prevents the increasing of the concentration of ions and this made these waters valid for irrigation purposes.

Abstract: ABSTRACTSporadic copper – iron opaque minerals are found associated with metabasalts of the Mawat ophiolite complex, NE Iraq. These minerals are found as disseminations and in veins cross – cutting the host rocks. The essential opaque minerals are chalcopyrite and pyrite with minor iron oxide minerals namely magnetite and hematite. Fe – hydroxides and copper chloride minerals represent the secondary products of chalcopyrite oxidation. The presence of these opaque assemblages is related to the tectonic evolution of the Mawat ophiolite complex originated at fore – arc suprasubduction zone ( SSZ ) and is explained by deposition from hydrothermal solutions during basalt – seawater interaction that causes also the metamorphism and alteration of the studied metabasalts.A particular finding of interest was the efficiency of nitric acid to extract measurable amounts of copper. A high copper extraction recovery ( 95% ) was obtained applying ion – exchange method on Dowex 50 resin after dissolving rocks in 4M nitric acid.

Abstract: On the basis of the biocontents, lithological features and analysis of the microfacies, an attempt is made to establish the nature of paleoecology and depositional environments of some Upper Cretaceous formations from northwest and middle Iraq ,of which the successions are represented by the formations from the oldest to the youngest are Khasib, Tanuma, Sa'di, Mushorah, Hartha and Shiranish.A wide spectrum of environmental types distributed between deep and shallow marine environments. The implication of paleoecological interpretations for different Ostrscode species and other fossils recorded in the studied sections highlights the strong correlation between the environmental parameters in particular the depths and the lifestyle of these organisms including specific morphologies and faunal abundance.In addition to that from palaeocological point view the identified biocontents represent a southern shelf tythes fauna.

Abstract: ABSITRACTThis research is aimed to design an Eudiscoaster and Heliodiscoaster recognition system. There are two main steps to verify the goal. First: applying image processing techniques on the fossils picture for data acquisition. Second: applying neural networks techniques for recognition.The image processing techniques display the steps for getting a very clear image necessary for extracting data from the acquisition of image. This picture contains the fossils. The picture should be enhanced to bring out the pattern. The enhanced picture is segmented into 144 parts, then an average for every part can easily be computed. These values will be used in the neural network for the recognition. For neural network techniques, Competitive neural network was used for comparisons. The weights and output values will be stored to be used later in identification. The Competitive network succeeded in identification and attained to (False Acceptance Rate = 15% - False Rejection Rate = 15%).ــــــــــــــــــــــــــــــــــــــــــــــــ