أجريت الدراسة على رمال السليكا الواقعة بمنطقة الدراسة جنوب شرق نالوت لغرض تقيمها اقتصاديا لصناعة الزجاج . حيث كان اجمالى العينات المأخوذة من منطقة الدراسة 30 عينة أخذت من خمس مناطق شملتها الدراسة الحقلية بالموقع المذكور. وشملت الدراسة المعملية الوصف الصخري ، التحليل المنخلي للعينات المدروسة ،ودراسة التركيب المعدني لشرائح صخرية بواسطة المجهر المستقطب لغرض الدراسة البتروجرافية ولعينات رملية بواسطة حيود الأشعة السنية (XRD). هذا وشملت الدراسة التحاليل الكيميائية للعينات الرملية المدروسة لمعرفة تراكيز العناصر الاساسيةبواسطة جهاز بالبث الطيفي البلازمي ICP) ) كما تم فصل المعادن الثقيلة. وبينت نتائج التحليل المنخلي بأن الشكل الحبيبي لمعظم العينات مستدير إلى شبه مستدير وتصنيفها جيد. وأثبتت نتائج التحليل المعدني بجهاز حيود الأشعة السنية تواجد معدن الكوارتز مع كمية قليلة من اكاسيد الحديد ،وكان متوسط المعادن الثقيلة في العينات 0.3% .هذا و أظهرت دراسة الشرائح الصخرية، عدد من المعادن الثقيلة من ضمنها التورمالين والزركون وبينت نتائج البث الطيفي البلازمي نسبة مجموعة اكاسيد منها : اكاسيد الصوديوم (Na2O3) وأكسيد الالومنيوم((Al2O3 واكاسيد الحديد((Fe2O3 . وبيت التحاليل الكيميائية إن نسبة السليكا عالية في العينات تصل ( 97.70 % ) ونسبة الرطوبة منخفضةلاتتجاوز 2%، وبالتالي تعطى هذه النتائج قيمة اقتصادية جيدة لهذه الرمال . وخلصت كل هذه النتائج على إمكانية قيام صناعات على هذه الرمال مثل صناعة الزجاج الزجاج وصناعات مواد البناء المختلفة والطلاء وورق الصنفرة.
سمية مسعود على عبدو (2009)

Abstract Measurements of in-situ data for geomechanical parameters are very essential part of geotechnical engineering design, but the time and the budgets are major issues, The design engineer must make critical decisions at several steps throughout the design stages to obtain the most reliable and realistic soil and rock property information. Because of that, the empirical equations are increased in use during the early stages of engineering design work. In any geotechnical investigations, most probably, will be involved in using Standard Penetration Test (SPT). It is a very popular test among geotechnical engineers. Therefore, it will be economically very useful if the results of SPT as N-values could be used to calculate the other geomechanical parameters. The sites of investigation are the Zawia Combined Cycle Power Plant, West Mountain Power Plant at Rowies, Tripoli and Tunisa. The data were collected from 13 boreholes, and more than 160 points. Which gave wide reliable results. Field investigations include Cross-Hole, Down-Hole seismic techniques, Standard Penetration Test SPT, Cone Penetration Test CPT and pressuremeter test PMT. The variation of seismic waves velocity (Vs & Vp) and dynamic modulus (shear modulus, young modulus, and bulk modulus) of sand and weak rock were studied and some correlations were developed. Also the effects of depth on the correlations were investigated. The correlations compared with previous relationships. The results showed that the power function provides the best fit for correlation between seismic wave’s velocity and dynamic modulus data with SPT N-value. The correlation coefficient (r) range 0.77-0.54 for sand and for weak rock. Range is 0.82-0.58. The multiple power regression analysis enhanced the correlation coefficient of sand and weak rock to ranges 0.82-0.58 and 0.97-0.92 respectively. These results are higher than the previous results. A single value of geotechnical parameters is very difficult to determine because the properties of material vary from point to point in the way that, it depends on a set of conditions so geotechnical parameters (seismic waves velocity and dynamic modulus) were determined between an upper and lower limits. The results of statistical analysis of relationship between SPT N-value and Cone Penetration Test (tip resistance qc) for all available data show that a linear regression with zero intercept as best fit correlation. of r=0.77. This result is equivalent to previous work. The logarithmic regression gave the best fit for the correlation analysis between the pressuremeter modulus EPMT and N value by r=0.81. The relationship between the limit pressure PL and N value was shown that, the linear regression was the best fit. The best-fit regression indicated a logarithmic relationship between the pressuremeter modulus (EPMT) and limit pressure (PL), with r=0.81 and 0.66 respectively.
ملاك عبد اللطيف ابوعرقوب (2010)

Abstract The sandstone of Upper Ordovician Mamuminyat Formation represents part of stratigraphic column in Murzuq Basin, south west Libya. It is the primary reservoir target in the basin, soursed and caped by Lower Silurian Tanezzuft Shale (Sola, 2000). The Mammuniyat reservoir in Murzuq Basin is characterized by lateral and vertical variation of petrophysical properties duo to lateral change of depositional environment and the digenetic effect on the formation load various facies deposition quality. The Concession NC174 is discovered in 1997 by Lasmo Grand Maghreb Limited then On the 26th October 2003 the development drilling campaign started by MOG till thepresent time. The El feel field is the major discovery in NC174. Porosity range is 16-18% and permeability some hundreds millidarcys. The Net thickness/Gross thickness ratio varies from 20% to 95% with an average value of 70%. The sedimentary fill in the Murzuq basin is mainly Paleozoic to Mesozoic in age and reaches a thickness of about 4000 meters in the depocenter. The sedimentary sequence is punctuated by several regional unconformities corresponding to successive tectonic activity phases. In the area of NC174, the tectonic phases developed anticlines and fault bounded anticlines generally super-imposed and re-actived through time. The resulting structural style is characterized mainly by poli-history sub-vertical reverse faults with different directions (N-S, NNW-SSE and NNE-SSW), these faults bound most of the prospects apparently superimposed on subtle anticlines oriented SSWNNE along which the culminations are aligne.
خالد مسعود الزوام (2014)