Series-1 (May – June 2021)May – June 2021 Issue Statistics
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| Paper Type | : | Research Paper |
| Title | : | Effect of Sand Consolidation In Course of Time on Seismic Properties |
| Country | : | |
| Authors | : | Semenova Yuliia |
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: | 10.9790/0990-0903010105  |
Abstract: Background: The growing pace and volume of construction of high-rise buildings and important engineering structures requires the development of new territories, which, according to expert estimates, are often characterized by difficult engineering and geological conditions and deteriorated seismic properties.Cities are expanding, usually settling on land with poor seismic properties.
Materials and Methods: The study investigated the effect of consolidation of alluvial sand over time on the amplitude-frequency characteristics of the soil under the construction site.
Results: The results of the study of the influence of the factor of consolidation of alluvial sand over time on the amplitude-frequency characteristic.....
Keywords: Amplification, Seismic oscillations, Seismic properties of soils, Frequency characteristics of soil, Earthquakes.
[1]. Bardet, J., Ichii, K., Lin, C.: Manual of EERA: A Computer Program for Equivalent-Linear Earthquake Site Response Analysis of Layered Soil Deposits. University of Southern California, Los Angeles (2000)
[2]. Building in seismic regions of Ukraine: SBS V.1.1-12: 2014, (2014). Kyiv: Building Ministry of Ukraine, 84 p. (in Ukrainian)
[3]. Chowdhury I., Dasgupta S.P. (2019) Soil Dynamics and Earthquake Engineering. In: Earthquake Analysis and Design of Industrial Structures and Infra-structures. GeoPlanet: Earth and Planetary Sciences. Springer, Cham. https://doi.org/10.1007/978-3-319-90832-8_3
[4]. Finn, W. D. L., Yogendrakumar, M., Yoshida, N., Yoshida, M.: TARA-3: a program for nonlinear static and dynamic effective stress analysis. Soil dynamics group, Univ. of British Columbia, Vancouver (1986)
[5]. Hashash, Y. M. A., Park, D.: Non-linear one-dimensional seismic ground motion propagation in the Mississippi embayment. Engineering Geology 62(1-3), 185—206 (2001).
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| Paper Type | : | Research Paper |
| Title | : | Structural Seismic Interpretation of Olaj - field within the Niger Delta |
| Country | : | Nigeria |
| Authors | : | Osisanya O.W || Korode A.I || Ighrakpata F.C || Asarhasa P.E, Nwigwe G.C |
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: | 10.9790/0990-090301614 |
Abstract: Structural seismic interpretation is a key component of seismic interpretation workflow, as much information on reservoir architecture which is required for hydrocarbon play assessment can be obtained. This study presents the results of the integration of structural time-depth maps to define reservoir units across five (5) well for hydrocarbon play assessment of Olaj-field within the Niger Delta basin. Two reservoir windows (R1 and R2) were delineated from five wells (W-02, 04, 06, 07 and 012). The top and base of each reservoir window were delineated from the five wells using their gamma ray and resistivity log response. Well to seismic correlation was carried out with checkshot data from well-012. Structural interpretation for inline 6975 revealed about eight (8) faults labelled.....
Keywords: Seismic section, Structural interpretation, Faults, Structural maps and Well log.
[1]. Avobovbo, A. A. (1978): Tertiary lithostratigraphy of Niger Delta. American Association of Petroleum Geologists. Tulsa, Oklahoma. Pp. 96-200.
[2]. Barde J.P, Chambertain P, Gralla P, Harwi Janto J, Marsky J, Schroeter T (2000). Explaining a complex hydrocarbon system in the Permo-Triassic of the Precaspian basin by integration of independent models. Abstracts, 62nd European Association of Geoscientists and Engineers Conference and Technical Exhibition, 2: (P.021), P.4.
[3]. Bilotti, F. and J.H. Shaw. (2005). "Deepwater Niger Delta Fold and Thrust Belt modeled as a Critical – Taper Wedge: The Influence of Elevated Basal Fluid Pressure on Structural Styles". AAPG Bulletin. 89(11): P.1475-1491.
[4]. Doust, H; Omatsola, E (1990). Niger Delta, in Edwards, JD; Santogrossi, PA eds; Divergent/passive Margin basins; AAPG Memoir 45: P. 239–248.
[5]. Eshimokhai, S. and Akhirevbulu, O.E, (2012): Reservoir characterization using seismic and well log data (A case study of Niger Delta). Ethiopian Journal of Environmental Studies and Management (EJESM). Vol. 5, No.4 Pp. 597-773
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| Paper Type | : | Research Paper |
| Title | : | A new occurrence of yttriumuraninite, Selenium minerals, Sphalerite and Pyrite assemblages from research drilling at Abu Rusheid uranium mineralization, southern Eastern Desert, Egypt |
| Country | : | Egypt |
| Authors | : | Ahmed S. Shalan |
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: | 10.9790/0990-0903011527 |
Abstract: Based on petrographic investigation applied to the picked core samples through pre-pilot drillhole north of Wadi Abu Rusheid, SED, Egypt with depth of 47m which have been studied perfectly, the subsurface metamorphic sequence are (from top to bottom): mica schist, buffish gray mylonitic gneiss, quartz feldspar whitish mylonitic gneiss, caverneous mica schist, quartz-hornblend-biotite schist and finally whitish gray mylonite gneiss interrupted by thin layer of quartz-carbonate-hornblend-biotite schist. Mineral association found for the first time in the area under investigation, the yttriumuraninite (gummite), uranophane, are found together with botryoidal sphalerite (with colloform texture), Przibramite ((Zn,Cd)S), Clausthalite (PbSe) and Berzelianite (Cu2Se) as well as well-developed pyrite that confirmed by Scanning Electron Microscope (SEM). Thorite and uranothorite are also......
Keywords; pre-pilot drillhole, Mylonitic gneiss, Gummite, Przibramite, Clausthalite, Abu Rushied. Egypt
[1]. Abd El-Naby and H., Frisch, W., (2006): Geochemical constraints from the Hafafit Metamorphic Complex (HMC): evidence of Neoproterozoic back-arc basin development in the central Eastern Desert of Egypt. Journal of African Earth Science, 45, 173-186.
[2]. Abd El-Naby, H. and Frisch, W., (2002): Origin of the Wadi Haimur–Abu Swayel Gneiss belt, South Eastern Desert, Egypt: Petrological and geochronological constraints, Precambrian Research, 113: 307 322.
[3]. Abd El-Naby, H., Frisch, W., Hegner, E., (2000): Evolution of Pan-African Wadi Haimur metamorphic sole, Eastern Desert, Egypt. Jounal of Metamorphic Geology, 18, 639-651.
[4]. Assaf, H. S., Ibrahim, M. E., Zalata, A. A., El- Metwally, A. A. and Saleh, G. M. (2000): Polyphase folding in Nugrus-Sikeit area south Eastern Desert, Egypt. JKAW: Earth Sci., 12, 1-16 p.
[5]. Cebron, F., Ildefonse, P., and Sichere, M. C., (1993): New mineralogical data on uranophane and B-uranophane, synthesis of uranophane. Mineralogical Mag., 57, pp. 301-308
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| Paper Type | : | Research Paper |
| Title | : | The vertical gradient of normal gravity and surface geometry |
| Country | : | Greece |
| Authors | : | Gerassimos Manoussakis |
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: | 10.9790/0990-0903012840 |
Abstract: The vertical gradient of normal gravity (VGNG) plays a significant role in several applications and is an interesting quantity from a pure theoretical point of view as well. In this work the VGNG will be studied from a theoretical point of view, therefore the expression of the VGNG at a point P on the Earth's physical surface in geodetic coordinates is presented. Since the value VGNG also depends on the mean curvature of the normal equipotential surfaces, an effort has been made to express the fundamental quantities EU, FU, GU, LU, MU and NU at point P in a specific form. These quantities are expressed as combinations of the fundamental quantities of the ellipsoid of revolution, its mean curvature, Gauss curvature, and normal reduction. The fundamental quantities of the ellipsoid of revolution are determined at a point Q which is the projection of a point P, on the ellipsoid along the vertical line..
Keywords: Vertical gradient, normal gravity, ellipsoid, equipotential surfaces, mean curvature, Gauss curvature.
[1]. Deakin R.E. and Hunter M.N. (2013): "Geometric Geodesy", School of Mathematical and Geospatial Sciences, RMIT University,
Melbourne, Australia, Part A, pp. 58 – 61.
[2]. Heiskanen W. and Moritz H. (1967): "Physical Geodesy", W.H. Freeman and Company, San Francisco and London, pp. 78, 79,
196.
[3]. Kiziltuǧ S. and Tarakci Ӧ. 2013): "On Parallel Surfaces of Weingarten Tubular Surface in Euclidean 3 – Space", Global Journal of
Advance Research on Classical and Modern Geometries, ISSN 2284 – 5569, Vol. 2, Issue 1, pp. 30 – 35.
[4]. Pánisová J., and Pašteka R. (2009): "The use of microgravity technique in archaeology: A case study from the St. Nicolas Church in
Pukanek, Slovakia", Contributions to Geophysics and Geodesy, vol. 39 / 3, pp. 237 – 254.
[5]. Repanić M., Kuhar M., and Malović I. (2015): "High precision vertical gravity gradient determination in Croatia", Acta Geodetica
Geophysica, 50, pp. 151 – 171
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| Paper Type | : | Research Paper |
| Title | : | Assessment of Background Gamma Radiation within Geo Works Quarry site in Dutse Local Government Area Jigawa State |
| Country | : | |
| Authors | : | Muhammad Bura Garba || Dr. Sani Jibrin Gumel |
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: | 10.9790/0990-0903014144 |
Abstract: Assessment of radioactivity concentrations of 40K, 238U and 232Th in surface soil samples of some selected quarry sites at Dutse Local Government area Jigawa Statehad been determined by gamma spectrometry using Sodium IodideThallium doped NaI (TI) detector coupled with a pre-amplifier base to a multiple channel analyzer (MCA). Total of 15 soil samples, were collected, 5 samples from each of the three selected quarry sites: Sabuwar Tasha, Kachi Villageand Dan Masara. Highest radioactivity concentrations of 40K, 232Th and 226Ra were obtained from Dan Masara soil samples with values 1126.28 ± 4.15 Bq/kg, 112.83 ± 16.35Bq/kg and 40.72±3.12 Bq/Kgrespectively. The mean external hazard index (Hex) and mean internal hazard index (Hin) for all the soil samples from Sabuwar Tasha were calculated to be 0.581Bq/kg and 0.684Bq/kg respectively, and that of Kachi Village were 0.557 Bq/kg.......
Keywords: Gamma, Radiation, Radioactivity, External hazard index and Internal hazard index..
[1]. European Commission). Radiation Protection 112. Radiological Protection Principles Concerning the Natural Radioactivity of Building Materials.Direc- torate-General Environment, Nuclear Safety and Civil Protection, (1999).
[2]. Mishev A. and Hristova E. (2011): Gamma Background Measurement at BEO mousala, Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences 72 Tsarigradskochaussee, Sofia 1284, Bulgaria.
[3]. Radon and Cancer, (2008): Questions and Answers, National Cancer Institute.
[4]. Washington State department of health, (2002): Background Radiation Natural vurses man-made. Division of Environmental Health office of radiation protection.
[5]. Lambardi M. H. (2006): Radiation Safety in Nuclear Medicine. Toylor and Francis Group, Boca Raton London New York.
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| Paper Type | : | Research Paper |
| Title | : | Magnetic Data Processing to Determine The "X" Subsurface Geological Structure |
| Country | : | |
| Authors | : | Anindha Ristasari || Tony Yulianto || Udi Harmoko || Rina Dwi Indriana |
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: | 10.9790/0990-0903014550 |
Abstract: Magnetic data processing has been carried out with the aim of identifying subsurface structures for interpretation of the presence of faults in the "X" area. The data used in the form of secondary geomagnetic data with a total of 1568 points of measurement. In this research, processing is carried out using standard processing as a reference for the development of numerical processing. From the modeling results, it can be seen the existence of a down-fault. The existence of faults in the research area is a potential for several minerals with promising economic value. The appearance of metallic minerals is in tuff rocks with a susceptibility value of 0.005 emu to 0.007 emu. In addition, there are lapilli tuff, breccia, andesite, and andesitic tuff rocks with susceptibility values of 0.005 emu, 0.001 emu, 0.016 emu, and 0.007 emu, respectively..
Keywords: geological structure, fault, total magnetic field anomaly, susceptibility, magnetic method
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[2] Junaedy, M., R. Efendi., dan Sandra., 2016, Studi Zona Mineralisasi Emas Menggunakan Metode Magnetik di Lokasi Tambang Emas Poboya,Program Studi Fisika Jurusan Fisika FMIPA, Universitas Tadulako, Palu, Indonesia.
[3] Sukmawan, E., Eratmadji., dan Sufi., 2011, Karakteristik Mineralisasi Vein Permukaan Kesirih Kiri Daerah Muaramenderas Kecamatan Sungai Tenang Kabupaten Merangin Proponsi Jambi., HAGI.
[4] Faeyumi, M., 2012, Sebaran Potensi Emas Epitermal Di Areal Eksploitasi PT Antam Unit Geomin, Tbk Kecamatan Nanggung Kabupaten Bogor, Skripsi Program Studi Geografi FMIPA,Universitas Indonesia.
[5] Lindgren, W., 1933, Mineral Deposits., New York, McGraw-Hill Book Company, Inc.
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| Paper Type | : | Research Paper |
| Title | : | Research on the Characteristic Differences of Ultra-deep Sub-salt Adjacent Gas Reservoirs in Kuqa Depression - Take Keshen 2 Gas Reservoir and Keshen 8 Gas Reservoir for Example |
| Country | : | China |
| Authors | : | Deyu Cui || Zhaolong Liu || Peng Zhou || Sheng Zhang || Hongbo Cai || Junqi Yang || Wenhui Zhu || Gang Li || Weili Chen || Chunlei Hu || Yuqi Liu || Zhipeng Huan |
|
: | 10.9790/0990-0903015159 |
Abstract: Keshen 2 and Keshen 8 are the two gas reservoirs which locate in the adjacent hanging wall and footwall, belong to Keshen segment of Kelasu thrust belt in the middle of Kuqa depression, Tarim Basin. After Keshen 2 gas reservoir has gained the industrial gas flow, the drilling data from Keshen 8 gas reservoir which located in the footwall of Keshen 2, and buried deeper than Keshen 2 shows that, single well test of the highest daily production of natural gas are more than one million cubic meters, well above Keshen 2. Through the comprehensive study of the core, characteristics of reservoir, sedimentary phase, capacity, geometry, current stress, cracks and other data of the two gas reservoirs, show that there are no much difference between two gas reservoir in petrological characteristic, reservoir physical property, sedimentary environment and other aspects. The difference is mainly in the following three aspects: structural type, the development scale of cracks, the magnitude of stress. Relative.....
Keywords：Keshen 2 Gas Reservoir, Keshen 8 Gas Reservoir, Kelasu Thrust Belt, Fracture Effectiveness, Geostress
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