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Register a new userAnaletical study of clay deposits of the lower Cretaceous of South Palmyra Folding Zone-Syria
دراسة اقتصادية للتوضعات الغضاريظ العائدة للكريتاسي الأسفل ضمن نطاق الطي التدمري الجنوبي - سورية
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يتناول هذا البحث دراسة اقتصادية للتوضعات الغضارية العائدة للكريتاسي الأسفل ضمن نطاق الطي التدمري الجنوبي. أنجزت هذه الدراسة باستخدام المعطيات و الطرائق البحثية الملائمة لها. تم تقسيم تشكيلة رمل تدمر التي تضم التوضعات الغضارية إلى ثلاث وحدات اعتمادا على السحنات الليثولوجية المكونة لها، كت تحديد تركيبها الكيميائي و الفلزي و خصائصها الفيزيائية. تبين أنها متعددة التركيب الفلزي و تتألف بمعظمها من الكاؤكلينيت و الإيلليت و الكوارتز و فلزات ثانوية أخرى.
This research studies the economic importance of lower Cretaceous clay deposits of South Palmyra folding zone. This study carried out using appropriate research methods. The Palmyra sand formation, which includes clays deposits, has divided into three units depending on its lithological facies. Its chemical and mineral composition and physical properties had identified, it is mostly of Kaolinite, Illite, Quartz and other secondary minerals.
References used
Bain, J. A. (1971). A plasticity Chart as an Aid to Identification and Assessment of Industry Clay. Clay Minerals, 15: 85-93
Brew, G. ;Barazngi, M. ; Al-Maleh, K. and Sawaf, t. (2001). Tectonic and Geologic Evolution of Syria. Geo Arabia, Bahrrain, Vol.6.N 4, 573p
Dondi, M. (1999). Clay matreials for Ceramic Tiles from the Sassolo district (Northen A pennines, Italy) Geology, Composition & Technological properties. Applied Clay Science. N15, P337-366
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The Petrological study of Clay deposits belonging to the lower
Cretaceous in the northern part of South Palmyra Folding Zone.
Showed they were formed as a result of weathering processes of
igneous rocks within Sedimentary continental climate is ho
t and wet
conditions, and formed lateritic iron soil, followed by enrich,
erosion and washing caused by watery agitate and re-replaced for
short distances within valleys or grooves or local karst cavities, and
later filled by crust erosion materials through the Cretaceous Sea
transgression.
Shiranish formation in Sazaba Oil fields region had been divided by
Petrology study and well Logs measurements to three major members (lower –
middle – upper). Then these members have been divided to lithostratigraphic
units and subunits. This stu
dy showed that the lower member is formed of
clayey - limestone rocks rich in planktonic foraminifera and glaconitic sand.
The middle member consists of organic limestone facies, dolomitic-limestone,
sometimes clayey - limestone rocks with crystals of pyrite and glaconitic sand.
Organic- limestone rocks and detrital limestone are predominant in the upper
member interbeded by dolomitic-limestone and rare clayey – limestone. This
facies contains pelagic and planktonic foraminifera.
The role of diagenes phenomenon is evident on Shiranish’s facies through:
dolomitization according to burial and miksing processes. It is also clear
through chemical compaction, mechanical compaction, cemenation,
micretisation and silisification.
The study was made in the region of the NNE-SSW trending Mrah anticline.
This anticline is one of the main anticlines belonging to the Northern part of the
Palmyride fold belt, lying amid Syria, in the northern Arabian plate. The lithostratigraphic
column of the study area consists of the marine sediments of
upper Cretaceous and lower Paleogene age.
The field study involved the description and measurement of the brittle
deformations in ٢٥ sites, which are distributed stratigraphically and
geographically in the different parts of the Mrah anticline. Data processing and
field observations led to a reconstruction of the principal stresses, which
affected the region, and their evolution relative to the main folding phase
(Neogene-Quaternary).
This research aims to study the sedimentary and palaeogeographic
evolution of the Kurachina Dolomite Formation along Palmyrian belt zone.
Studying this formation in its Northern and Southern parts has shown that it
consists of two lithostratigraph
ic members, where each of them includes a
series of lithological units. The petrological study of the components of these
units shows that they are composed of four distinguished facies: Dolomitic
limestones, clayey limestones, clays and anhydrites, pure or mixed, and
deposited in repeated harmonic layers, gathered mostly in neutral sedimentary
sequences. Dolomitic limestones are the most common and important facies,
they are composed of micrite muds which have been subjected, in different
degrees to synsedimentary or late dolomitisation processes through pumping or
burial mechanisms. Dolomitisation intensity decreases downward the formation
and increases laterally from the south to the north of the Palmyrian chain.
Considering the importance of the Palmyrian folding zone as one of the
promising zones, and the scientific and practical importance of the isolation of
the matrix formation in any sedimentary basin or in any part of it, and that the
sedimentary ro
cks, which have sufficient quantity and quality of organic
materials cannot become matrixes until they undergo convnient conditions of
temperature, pressure and geological time, the aim of this work is to study the
effect of these factors on the sedimentary rocks of the investigated ones and to
isolate the formations, which may be matrixes.
According to the results of this study,the formations which may play the
main role as matrix are these which have Middle Triassic age or Paleozoicin
the northern Palmyrian subzone, and older than Permian age in the southern
Palmyrian subzone .
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