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Search Results: 1 - 10 of 690 matches for " geology "
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Geomorphological, Geological and Engineering Geological Aspects for Sustainable Urban Planning of Mymensingh City, Bangladesh  [PDF]
Salma Akter, Reshad Md. Ekram Ali, Shahtaj Karim, Mahmuda Khatun, Mohammad Feruj Alam
Open Journal of Geology (OJG) , 2018, DOI: 10.4236/ojg.2018.87043
Abstract: Geomorphological, geological and engineering geological information is used as the base data to characterize the subsurface condition and for sustainable urban planning and development of the rapidly expanding Mymensingh city. Extensive field work has been completed to get the realistic scenario, data and samples have been collected from surface and subsurface with auguring and geotechnical boring. The laboratory tests have been performed following standard laboratory procedures. Geomorphologically the area is broadly classified into Older Floodplain or Mymensingh Terrace and Younger Floodplain. These two flood plains are separated by Old Brahmaputra River. Geologically the area is mainly covered by the recent alluvial flood plain deposits which are underlain by the Pleistocene Madhupur clay deposits. The Younger Flood Plain deposit consists of mainly unconsolidated fine to medium sands with some silt and clay whereas the Older Flood Plain deposits are mainly consisting of silty clay and fine to medium sand. Moderately compacted sediments of older flood plain deposit are suitable for urban development. Based on geotechnical characteristics and the N values (blow counts of Spontaneous Penetration Test, SPT) of the subsurface sediments, the study area is classified into four Engineering Geological Units. Unit I indicates loose soil and is suitable for shallow foundation. Unit II is indicating compact soil packing; N value of these two units increase with depth and would be good for heavy foundation. Unit III is suitable for shallow structures. Unit IV, which is composed of mostly clay, silty clay and sand with highly compressive organic clay, is recommended to avoid any heavy construction and could be used as open place, water retaining zone etc. Beside the geological and engineering geological study details hydrology and hydrogeological and a systematic study on seismic hazards are strongly recommended before planning of urban area.
Sorbent Mineralogy in the Most Basin and Their Utilization for Reclamation Works  [PDF]
Michal ?eho?, Petr Vráblík, Jaroslava Vráblíková, Luká? ?i?ka
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.712118
Abstract: The contribution is focused on the relation between sorptive efficiency, mineral structure, and reclamation extraction of clay sorbents originating from the Most Basin. Clay sorbents are an important accessory raw material that occurs on several localities in the North Bohemian Brown Coal Basin, which are briefly described in the first part of the paper. The results from clay sorbents were obtained by mineralogy survey based on a diffract analysis with a D 5000 Siemens X-ray diffractometer. Localities, where zeolites and montmorillonites were found, are the main subjects of the research. The results show that parameters of clay sorbents mined in these localities are suitable for reclamation works. A successful reclamation with the use of bentonites is demonstrated on Strimice dump.
Petrophysical Analysis of the Mpapai Well Logs in the East Pande Exploration Block, Southern Coast of Tanzania: Geological Implication on the Hydrocarbon Potential  [PDF]
Aneth L. Lyaka, Gabriel D. Mulibo
Open Journal of Geology (OJG) , 2018, DOI: 10.4236/ojg.2018.88046
Abstract: This study presents results of log analysis from Mpapai well, which is located in the East Pande Block, southern coast of Tanzania. The study aimed at assessing the hydrocarbon potential of lithological units encountered during drilling of Mpapai well. To achieve the general objective, suites of wire-line logs from Mpapai well were used for the analysis. Based on wire-line logs, three types of lithology were identified which include sandstone, shale and limestone. Seven sandstone bodies marked as MpapaiA, B, C, D, E, F and G were identified with their tops and bases at the depth interval from 3004 m to 4008 m. Four zones among seven sandstones bodies marked as MpapaiB, E, F and MpapaiG were identified as reservoir zones. Computed petrophysical parameters for the four reservoir zones gave an average total porosity ranging from 14% to 21% with low permeability in the range of 3.92 mD to 13.67 mD. The low permeability indicates that the reservoir sand bodies are impermeable, that might have been affected by the geology of the area where high content of clay minerals reduces permeability due to filling in open spaces. The fluid type defined in the reservoir zones is basically water with high saturation greater than 75%, which indicates that the proportion of void space occupied by water is high, consequently low hydrocarbon saturation and production. Despite of fair to good porosity, the low permeability and high-water saturation indicate that the quality of Mpapai prospect is poor.
Processing seismic data with used geographical information systems in Jel ava.
Peter Sasvári
Acta Montanistica Slovaca , 2005,
Abstract: Computer based data processing and interpretation become an essential part of present-days. Geographic information systems (GIS) should be taken as one of the most significant part of human activity control process and should be accepted as a base of decision-making activies in mining and geology. The most important usage mode of GIS in geology should be applied for realtime critical events prediction processes. In that case, GIS could be usefull for the human life and the protection of economic resources.
Introducing the Iron Potential Zones Using Remote Sensing Studies in South of Qom Province, Iran  [PDF]
Faranak Feizi, Edris Mansouri
Open Journal of Geology (OJG) , 2013, DOI: 10.4236/ojg.2013.34032
Abstract:

The studied area—Kermejegan—is located in the south of Qom Province, Iran. In this paper, geology map, ASTER and ETM7+ satellite images were used and after processing these images with Geomatica and ENVI softwares, iron potential zones were compared with the iron mine position in the south of the area and 2 dominate indexs around. Finally remote sensing, faults and geological data layers were integrated in GIS and hopeful zones were introduced for continuing the exploration processes.

Geologic and economic potentials of minerals and industrial rocks in Jordan  [PDF]
Hani Alnawafleh, Khalid Tarawneh, Rami Alrawashdeh
Natural Science (NS) , 2013, DOI: 10.4236/ns.2013.56092
Abstract:

This work discusses status of the geologic and economic potentials of minerals and industrial rocks in Jordan. The major mineral resources are presented in details and the paper is designed to cover the lack of published data in this field. Geologically, the structural framework of Jordan is controlled largely by Arabian Nubian Shield in the south, block—faulted areas in the east, upwarping in north and east, and Wadi Araba-Dead Sea Transform Fault in the western part. The geologic environments include Precambrian crystalline basement (Late Proterozoic) of Arabian Nubian Shield (ANS) that is composed of igneous and metamorphic rocks at south-western part. Paleozoic rocks at southern and southeastern part consist of clastic minerals which are dominated by sandstone, whereas Mesozoic sedimentary rocks are widespread throughout southwestern, northern to southeastern parts of the country. They mainly consist of major industrial rocks and minerals such as phosphate, oil shale, limestone, dolomite, chalk, marble, gypsum, diatomite and tripoli. Cenozoic Era is composed of sedimentary and volcanic rocks in different parts of Jordan. There are more than twenty nonmetallic minerals and four main metallic deposits within the various geologic environments. This paper summarizes their distribution, chemical and mineralogical characteristics, in addition to their production statistics.

Influence of Geological Factor on Indoor Radon Concentrations in Dwelling of Querétaro, México  [PDF]
Rocio García Martínez, Anatoliy Kotsarenko, Roman Pérez Enriquez, Jose Antonio López Cruz Abeyro, Svetlana Koshevaya, Jesús Efrén Ospina Nore?a
Open Journal of Geology (OJG) , 2014, DOI: 10.4236/ojg.2014.412047
Abstract: In this study, radon-222 concentrations were measured within 34 houses distributed in the northern, southern, and central areas of the city of Querétaro in 2007. The objective of this study was to establish the spatial distribution of radon with respect to geological faults and its relation to certain environmental variables. For each sampling site, the radon-222 concentration was analyzed as a function of various climate variables, relative humidity, temperature, and atmospheric pressure, in addition to the ventilation of the house and distance of each site from any geological faults in the area. A multivariate statistical technique was used to analyze these variables based on two components. For component 1, the relative humidity and temperature had the greatest weight, 0.677 and 0.492, respectively, while for component 2, the greatest weights corresponded to radon and the temperature with 0.693 and 0.609, respectively. The average radon concentration across the entire sampling period was 38.92 Bq/m3, the minimum detected value was 6.01 Bq/m3 for site 91GAG0607, and the maximum detected value was 225.95 Bq/m3 for site 91CAM20907. This last value is outside the standards permitted by the Environmental Protection Agency of the United Stated, which is 148 Bq/m3 for indoor environments. With respect to geological faults and their relationship to radon-222, the concentrations for the sampling sites had no relationship to the closeness or distance to these faults.
Geological Hazards in Samtskhe-Javakheti Region (Georgia)  [PDF]
Gaprindashvili George, Gerkeuli Tamaz, Tsereteli Emil, Gaprindashvili Merab
International Journal of Geosciences (IJG) , 2016, DOI: 10.4236/ijg.2016.73024
Abstract: Hundreds of settlements, agricultural lands, roads, oil and gas pipelines’ routes, towers of high voltage transmission lines, hydro-technical-meliorative objects, mountain resorts, etc. are periodically experiencing strong influence of landslide-gravitational and debris flow/mudflow processes (often with catastrophic results). Almost all landscape-geographic zones—from Black Sea coastal region, to mountainous-nival, where geo-ecological situation is severely complicated, are locatedin dangerous area of disaster. Negative social-economic, demographic and ecological consequencescaused by debris flow/mudflows and landslide-gravitational processes, are seen in all spheres of human activity. In mountainous regions there is especially complicated situation, where in conditions of extreme activation of disaster, in many cases population displacement and transfer to other regions is needed. Because of it, in second half of 20th century, tens of villages in mountainous regions were desolated and agricultural lands were abandoned. Most alarming scenario is that such events are accompanied by loss of human lives. Only after 1995 up until now geological and geo-morphological processes in Georgia caused loss of lives of more than 139 persons. Even in conditions of routine activation of disaster, total economical damages reach tens of millions of dollars, and in case of extreme development—hundreds of millions.
Teaching Research of Geology Field Courses: A Case Study from Wuhan University  [PDF]
Tao Wang, Long Cheng, Jun Xiao, Peng Qi, Jun Zeng, Wanrui Hu, Suifeng Wang
Creative Education (CE) , 2016, DOI: 10.4236/ce.2016.79128
Abstract: The geology field course is the fundamental course in geoscience education. It is an intensive course that applies classroom and laboratory training to solve geological problems in the field. Wuhan University has offered a geology field course for undergraduate students since the 1950s. This paper summarizes and analyzes the teaching research in aspects of field course location, teaching contents and teaching tools since 2010, when the site was changed from the city of Chibi to Zigui County near the Three Gorges reservoir region.
Juan Rassmuss (1886-1971): su contribución a la geología argentina
González,Osvaldo Edgar;
Serie correlaci?3n geol?3gica , 2008,
Abstract: dr. rassmuss stayed in argentine between 1912 and 1926, where he made several investigations in the field of regional geology like in the areas of aconquija and candelaria ranges, metán basin, south of bariloche and many others. he studied the geology, hidrogeology and morphology of the velasco range as a consequence of a great decrease in the volume of water of la rioja river. he evaluated the coal discoveries of the country and studied different zones with lignite where he remarks the geology, structure and the possibilities of this resource. he studied the veins of rafaelita in neuquen and described an exploration oil drilling in tartagal, where he interpreted the stratigraphy and structure of subandinas ranges. also he analyzed the geology, structure and genesis of rosario de la frontera hot springs.
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