scholarly journals ΕNGINEERING GEOLOGICAL MAPPING IN THE URBAN AND SUBURBAN REGION OF NAFPLION CITY (ARGOLIS, GREECE)

2017 ◽  
Vol 43 (3) ◽  
pp. 1418 ◽  
Author(s):  
Em. Apostolidis ◽  
An. Koutsouveli
Keyword(s):  
Urban Development ◽  
Laboratory Tests ◽  
Region Of Interest ◽  
Underground Water ◽  
Geological Structure ◽  
Geological Mapping ◽  
Primary Role ◽  
Geotechnical Characteristics ◽  
Geological Conditions ◽  
Geological Map

In our days the strategy of an integrated planning approach in dealing with urban development matters, is a reality and engineering geology plays a primary role. In the present study an approach of the engineering geological conditions of Nafplion city and the wider area are given. In the region of interest, four (4) sampling boreholes were drilled by IGME, up to the depth of 40m. During the boring procedure in situ SPT and permeability tests were carried out, as well as the lithology of obtained material has been described. Samples, undisturbed and disturbed, have also collected for further laboratory tests. After the completion of each borehole, piezometric tubes were installed, for the monitoring of the underground water table. Laboratory tests for the determination of physical and mechanical characteristics of all drilled formations were executed. The geotechnical distinction and unification of the geological forma tions was made on a 1:5,000 topographical map, in accordance with the up to date in ternational practice. The engineering geological map in the urban and suburban region of Nafplion city is presented and the geotechnical characteristics of the formations struc turing the area are evaluated. The combination of the results of the drilling programme as well as on the engineering geological approach and the geological structure of the studied area, resulted the compilation of the engineering geological map (scale 1:5,000) of Nafplion city wide area, where 18 engineering geological types are distinguished. The boreholes data of other public bodies have been also taken into account for this compilation. As the task of this project was the contribution to the urban development of Nafplion city, this engineering geological map will be a useful tool for engineers, planners, civil authorities, etc.

scholarly journals Evaluasi Kondisi Geologi Teknik dalam Pembangunan Embung

2019 ◽  
Vol 5 (1) ◽  
pp. 121
Author(s):  
I Gde Budi Indrawan ◽  
Shinta Dwi Novianti ◽  
Heru Hendrayana ◽  
Doni Prakasa Eka Putra ◽  
Wahyu Wilopo
Keyword(s):  
Water Source ◽  
Geological Structure ◽  
Source Location ◽  
Geological Mapping ◽  
Engineering Geological Mapping ◽  
Merapi Volcano ◽  
Geomorphic Process ◽  
Geological Conditions ◽  
Detention Pond ◽  
Impermeable Layer

Pucang Village was consisted of eruption materials of Merapi Volcano. The relatively high coefficient of permeability of the materials consisting this area caused rainwater to directly infiltrate into the ground. Evaluation of engineering geological conditions was conducted for construction of a detention pond in this area, which had limited water supply for daily activities. The evaluation was conducted on results of a 1:10.000 scale of engineering geological mapping and analyses of 1:10.000 scale of geological disaster maps produced by previous researchers. The engineering geological mapping involved mapping of morphological condition and active geomorphic process, lithological condition, existence of geological structure, and water source location. The evaluation results showed that the proposed location met the land suitability criteria for detention pond construction based on the morphological condition and active geomorphic process, existence of geological structure, and water source location, but did not meet those based on the lithological and vulnerability to Merapi Volcano eruption disaster. Construction of impermeable layer to prevent water seepage into the ground and periodic removal of sediment in the base of the detention pond were suggested to be carried out to keep the detention pond functioning properly.

scholarly journals Revision of the geological map and 3D modelling of the geological structure of the Samaria Gorge Region, W. Crete

2001 ◽  
Vol 34 (1) ◽  
pp. 29 ◽  
Author(s):  
Ε. ΜΑΝΟΥΤΣΟΓΛΟΥ ◽  
Ε. ΣΠΥΡΙΔΩΝΟΣ ◽  
Α. SOUJON ◽  
V. JACOBSHAGEN
Keyword(s):  
Geometric Model ◽  
Short Review ◽  
Geological Structure ◽  
Geological Mapping ◽  
3D Cad ◽  
Digital Elevation ◽  
Geological Map ◽  
Interactive 3D ◽  
Elevation Model ◽  
The One

The island of Crete is situated near the front of an active plate margin. Therefore, it is of great interest in the framework of the International Continental Drilling Project (I.C.D.P.). A short review of the digital modelling methods, their applications in the geosciences and the associated advantages is also presented. The digital 3-dimensional geometric model of the geological structure of the Samaria Gorge region is based on the study of the stratigraphy and the tectonic evolution of the metamorphic rocks of the Plattenkalk group in SW Crete. Data from the geological map of Greece (Vatolakkos sheet, 1:50.000) and from the literature have been supplemented by geological mapping and structural analyses. In our study we applied interactive 3D CAD methods implemented in the integrated software package SURPAC2000. The surface geology has been draped over a digital elevation model of the topography in order to model the geometry of the subsurface structures. Two hypotheses about the geological structure of the region are examined: a) the one given by the existing geological map, which proposes a syncline structure and b) the one resulting from the combination of existing data, corrections carried out through repeated 3D simulations and new field observations. After distinguishing in the S of the study area the Trypali union, overthrusted on the Plattenkalk group, we propose an anticline structure with a NNE/SSW striking axis dipping to the NE.

scholarly journals Geology of Shantipur-Wami Taksar Areas of Gulmi-Baglung Districts, Western Nepal

2020 ◽  
Vol 22 ◽  
pp. 29-32
Author(s):  
Sushant Sapkota ◽  
Pashupati Gaire ◽  
Kabi Raj Paudyal
Keyword(s):  
Regional Scale ◽  
Mineral Resources ◽  
Geological Structure ◽  
Geological Mapping ◽  
The North ◽  
Copper Mineralization ◽  
Metallic Mineral ◽  
Geological Map ◽  
Map Scale ◽  
Geological Units

The study area represents a small part of the Lesser Himalaya in western Nepal and lies about 346 km west from Kathmandu. It covers 250 km area representing some parts of Gulmi and Baglung districts. The area was selected for the present study on the impression from the previous geological map that has showed some metallic mineral resources like iron, copper and lead in the region. Similarly, studies reveal that there is very complicated geological structure which raised the interest for the study. Main objective of the study was to prepare a geological map of the area in a scale of 1:25,000 and study the possible mineral deposits. An extensive geological mapping was carried out in the field covering at one data within one centimetre of the map scale and large number of samples was collected for the petrographic as well as ore genesis studies. The rocks of the region were mapped under two geological units as the Nourpul Formation (older) and the Dhading Dolomite (younger).  There are a series of folds in the area. From regional to micro-scale all folds are trending towards east-west. The Badi Gad Fault and the Harewa Khola Thrust are the regional scale thrust mapped in the area. The Badi Gad is considered as a strike-slip in nature. The Harewa Khola Thrust is probably an imbricate fault. It has propagated to the north which is out of sequence in nature. Some metallic minerals like copper and iron along with old working mines were observed during the study. Occurrences of copper and iron mineralization has been mapped and described. Present study revealed that copper mineralization is limited within the veins and boudinage forms as hydrothermal deposit while the iron is tabular and syngenetic in nature.

scholarly journals Engineering Geology of Sidosari Area, Magelang, Central Java, Indonesia

2017 ◽  
Vol 2 (1) ◽  
pp. 15
Author(s):  
Diyaning Ratri ◽  
I Gde Budi Indrawan
Keyword(s):  
Surface Engineering ◽  
Research Area ◽  
Geological Structure ◽  
Geological Mapping ◽  
Controlling Factor ◽  
Susceptibility Map ◽  
Residual Soils ◽  
Engineering Geological Mapping ◽  
Groundwater Seepage ◽  
Geological Conditions

Development of settlement area in Sidosari area and the surroundings requires complete understanding of the engineering geological conditions, including susceptibility to landslides, to prevent damaged properties and loss of lives. Surface engineering geological mapping at a 1:25000 scale was conducted to develop a detailed landslide susceptibility map for spatial planning and to identify most controlling factor of landslides in the research area based on conditions of geomorphology, rock and soil, geological structure, groundwater seepage, and land use. The engineering geological mapping showed that landslides commonly occurred in the moderate slopes of the denudational hill landform having slope inclination ranging from 9 to 17°, in the areas covered by residual soils of the vitric tuff 2 unit, in the areas of no groundwater seepage, and in the settlement areas, including in Kranjang Lor area where soil creeping occurred. The high susceptibility zone covered 55.5 % of the research area and was characterized by having slope inclinations ranging from 9 to 35°, engineering geological units of vitric tuff 2 and tuff breccia, and land uses of rice and dry fields and settlement. The low cohesion and very high swelling potential of the residual soils of the vitric tuff 2 unit were considered to be the main controlling factor of landslides in the research area.

Fundamentals of engineering Geology

2021 ◽  
Author(s):  
Nikolay Platov
Keyword(s):  
Vocational Education ◽  
Engineering Geology ◽  
Underground Water ◽  
Geological Structure ◽  
Federal State ◽  
Construction Site ◽  
Secondary Vocational Education ◽  
The Earth ◽  
Geological Conditions ◽  
State Educational

The theoretical and practical foundations of engineering geology, the geological structure and origin of the Earth are described, the minerals of rocks and the rocks themselves of igneous, sedimentary and metamorphic origin are considered. Considerable attention is paid to the geomorphological, geodynamic, and hydrogeological conditions of the construction site with the allocation of three types of underground water: upper water, ground water, and inter-reservoir. The dynamics of the development of various forms of relief caused by endogenous and exogenous processes is given. The zonal elements of engineering and geological conditions of any construction site are given. Meets the requirements of the federal state educational standards of secondary vocational education of the latest generation. For students of secondary vocational education institutions studying engineering geology.

Two Hundred Years of Geological Mapping in Belgium, From D'omalius D'halloy to the Belgian Federal State

2007 ◽  
Vol 26 (1) ◽  
pp. 75-84 ◽  
Author(s):  
Eric Groessens ◽  
Marie-Claire Dyck
Keyword(s):  
Geological Structure ◽  
Geological Mapping ◽  
Geological Survey ◽  
Federal State ◽  
Scientific Career ◽  
French Empire ◽  
Geological Maps ◽  
Geological Map

The career of Jean-Baptiste-Julien d'Omalius d'Halloy (1783-1875), commencing with brilliant scientific activities and proceeding to his attainment of the highest administrative and political positions, in itself demonstrates that he was an exceptional individual. His scientific career started with a long voyage through the French Empire and adjacent regions, during which he gained an understanding of the geological structure of most of Europe. The geological map he compiled based on his travel notes formed the basis of all future geological maps in the areas that he covered. After the independence of Belgium in 1830, André Dumont was made responsible for the mapping of the whole country, resulting in the publication of a 9-sheet map of Belgium in 1853 on a scale of 1:160.000. In 1878, Belgium decided to produce a more detailed map on the scale of 1:20.000, entrusting the work to Edouard Dupont., but as this appointment was controversial and the mapping at this scale was abandoned and than, the newly created Geological Survey of Belgium published a new 226-sheet map on a scale of 1:40.000. Starting from 1993, after the federalisation of the country, new geological maps of the regional states are mapped and produced.

scholarly journals Groundwater quality in Ponjong Karst, Gunungkidul Regency, Special Region of Yogyakarta

2020 ◽  
Vol 1 (1) ◽  
pp. 7-11
Author(s):  
Avellyn Shintya Sari ◽  
Sari Bahagiarti K ◽  
Suharsono Suharsono ◽  
C Prasetyadi
Keyword(s):  
Volcanic Rocks ◽  
Active Volcano ◽  
Research Area ◽  
Geological Structure ◽  
Groundwater Exploration ◽  
Geological Mapping ◽  
Karst Area ◽  
Aquifer System ◽  
Aquifer Systems ◽  
Geological Conditions

The hydrogeological condition of a region is determined by the type of lithology, morphology, and subsurface conditions where the condition is very helpful in the study of groundwater exploration. Especially when we encounter interesting geological conditions when the groundwater exploration in the karst area in which volcanic rocks are resulting from the activities of the active volcano in the past. Groundwater exploration at Ponjong area and surrounding does have its special characteristics, because it has 2 different rock characteristics where the northern part of the research area in the form of a karst area (limestone of Wonosari Formation) while the southern part is an area of ancient volcanoes with dominant volcanic rocks from Wuni Formation, As for the research on the above and subsurface research area where the research is conducted based on surface geology mapping, geoelectric data collection, and groundwater sampling. Geological mapping includes geomorphological data, stratigraphy, and geological structure. The aquifer system of the research area can be divided into two systems, inter-grain aquifer systems, and fracture aquifer systems. Overall quality groundwater in the research area is quite good. Ponjong District there are mining activities that have resulted in changes in the land use system in the area. This can cause changes in the water surplus in the area due to the changing catchment area.

scholarly journals In-situ ground gamma spectrometry — an effective tool for geological mapping (the Male Karpaty Mts., Slovakia)

2016 ◽  
Vol 67 (3) ◽  
pp. 291-301
Author(s):  
Andrej Mojzeš ◽  
Barbara Porubčanová
Keyword(s):  
Gamma Spectrometry ◽  
Natural Radionuclides ◽  
Mineral Resources ◽  
Geological Structure ◽  
Geological Mapping ◽  
Near Surface ◽  
Naturally Occurring Radionuclides ◽  
Geological Map

Abstract This contribution presents the results of profile in-situ gamma spectrometry measurements that sought to determine the content of natural radionuclides 40K, 238U and 232Th in a near surface horizon of rocks, their weathering cover and soils in the area of the Malé Karpaty Mts. It is widely established that the exploration of radioactivity of bedrocks and cover rocks can be a very effective and useful tool for both geological mapping, for identifying deposits of mineral resources, and even addressing the issues of structural and tectonic geology. This assertion is equally confirmed by the ground gamma spectrometry measurements carried out as part of this case study on larger scales, seeking more detailed geological structure solutions. The results obtained provide a welcome addition to an already existing database, which monitors the content of naturally occurring radionuclides individually for every rock lithotype of the Western Carpathians, by elaborating on the data collected by previous research and by updating this database for any future needs. The presented results confirmed the low to medium radioactivity levels of rocks and soils in the studied area. The highest values were detected in granitoids and metamorfic phyllitic rocks of the Malé Karpaty Mts. core; the lowest values were detected in carbonates, arenaceous sediments and, above all, amphibolite bodies. In this way, the presented results of the interpreted profile (P5) confirm the model of local geological structure as represented on the most up-to-date edition of the geological map of the Male Karpaty Mts. (Polak et al. 2011).

scholarly journals GEOLOGI DAN SUMBER BAHAN BATUAN SITUS CANDI SIRIH, KABUPATEN SUKOHARJO, PROVINSI JAWA TENGAH

2021 ◽  
Vol 19 (1) ◽  
pp. 33-46
Author(s):  
Fadhlan Syuaib Intan
Keyword(s):  
Literature Review ◽  
Natural Environment ◽  
Research Method ◽  
Data Interpretation ◽  
Geological Structure ◽  
Geological Mapping ◽  
Normal Faults ◽  
Surrounding Environment ◽  
Geological Conditions ◽  
The Temple

Candi Sirih merupakan tinggalan budaya dari masa Hindu-Buddha, yang masih cukup lengkap yang terbuat dari batuan tufa, sehingga dianggap sebagai candi yang tidak umum di Pulau Jawa karena menggunakan batuan yang bukan andesit. Hal inilah yang menjadi pokok permasalahan pada penelitian ini, yang mencakup bahan batuan candi dan kondisi geologi secara umum. Maksud dan tujuan penelitian ini adalah pemetaan geologi untuk mengetahui gambaran keadaan lingkungan alam yang mencakup morfologi, litologi, struktur geologi, dan menentukan lokasi pengambilan sumber bahan batuan untuk pembangunan candi. Metode penelitian diawali dengan kajian pustaka, survei, dan dilanjutkan dengan analisis petrologi, dan interpretasi data. Hasil pengamatan lingkungan memberikan informasi tentang bentang alam yang termasuk pada satuan morfologi dataran, dan satuan morfologi bergelombang lemah. Pola pengeringan permukaan dendritik, radial, dan rektangular, stadia sungai dewasa-tua, dan sungai periodik/permanen. Batuan penyusun adalah aluvial, dan satuan batuan tufa serta struktur geologi berupa sesar normal. Penentuan lokasi bahan batuan tufa (kasar. halus, berlapis) dan serpih untuk pembangungan Candi Sirih berasal dari lingkungan sekitarnya dalam radius 3,5 kilometer bujursangkar.   Sirih Temple is a cultural heritage from the Hindu-Buddhist era, which is still quite complete, made of tufa rock, so it is considered an unusual temple in Java because it uses non-andesite rocks. This is the main problem in this study, which includes the material of the temple rock and geological conditions in general. The purpose and objective of this research is geological mapping to determine the description of the state of the natural environment which includes morphology, lithology, geological structure, and determining the location of the source of rock material for the construction of the temple. The research method begins with a literature review, survey, and is followed by petrological analysis and data interpretation. The results of environmental observations provide information about the landscape that is included in the morphological units of the plains, and the weak wavy morphological units. Drying patterns of dendritic, radial, and rectangular surfaces, mature-old river stage, and periodic/permanent river. The constituent rocks are alluvial, and the tuff rock units and the geological structure are normal faults. The location of the tuff (coarse, fine, layered) and shale materials for the Sirih Temple construction came from the surrounding environment in a radius of 3.5 square kilometers.

scholarly journals Geological Mapping of the Longkeyang and Surrounding Regions, Bodeh District, Pemalang Regency, Central Java

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Irwan Firmansyah ◽  
Adi Candra ◽  
Fajar Rizki Widiatmoko
Keyword(s):  
Middle Miocene ◽  
Research Area ◽  
Geological Structure ◽  
Geological Mapping ◽  
Research Activity ◽  
River Sand ◽  
Geological Disasters ◽  
Central Java ◽  
Geological Conditions ◽  
River Deposits

Geological mapping is one of the important things as part of a field study to obtain geological knowledge. This is due to the need for a geologist who is required to be able to understand the geological conditions of an area, one of which is by conducting mapping activities in the field. In conducting this research activity, it is divided into two stages, namely the field stage and the laboratory stage. The purpose of this research is to determine the characteristics and geological conditions, identify resource potentials and potential geological disasters in the research area. Based on the analysis, it was found that the geomorphological units of the study area were divided into 4 (four), namely the Mount Ketos Homocline Hills Unit, the Polaga River Anticline Valley Unit, the Sarangkadu Cycline Hills Unit, and the Mount Lanji Intrusion Hills Unit. The geology of the study area consists of three rock units in order from oldest to youngest, namely the claystone-sandstone unit and the sandstone-claystone unit and the diorite intrusion unit. The geological structure of the pinnacle area is in the form of folds and faults, namely, Polaga River Anticlines, Sarangkadu Synclines, Polaga River Right Shear Fault, Polaga River Left Shear Fault. The geological history of the study area begins with the deposition of claystone-sandstone units during the Middle Miocene in the Upper Bathyal environment. Furthermore, after the claystone-sandstone units were deposited, during the Middle Miocene – Late Miocene in the Deep Neuritic environment, sandstone-claystone units were deposited with a turbidity deposition mechanism. As well as the geological resource potential of the research area in the form of utilization of river deposits in the form of chunks of igneous rock, river sand deposits and indications of the presence of gold. Meanwhile, the potential for geological disasters in the form of landslides.

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