scholarly journals A new View on the structural pattern of the Metohiya basin and its margin: A preliminary note

2007 ◽  
pp. 29-38
Author(s):  
Milosav Simic ◽  
Antonije Antonovic
Keyword(s):  
Satellite Image ◽  
Mineral Resources ◽  
Linear Structure ◽  
Ring Structure ◽  
Strong Impact ◽  
Preliminary Note ◽  
Structural Pattern ◽  
Hexagonal Shape ◽  
Geological Map ◽  
Lithological Composition

The region of the Metohiyan depression and its complex geological margin is a morphotectonic entity formed over the complicated structures of the basement. The first glance of the orographic-geological map or satellite image shows the hexagonal shape of the depression, in clear contrast to the linear structure of the Vardar Zone. Sedimentation of Neogene deposits began in a trough, the "main shape of which was finished" and the depression itself had been formed and modified over a long period of time. This is indicated by the slight deformations of the Miocene deposits, somewhat stronger along the rim of the basin, and the relatively great thickness of the Neogene in general, uniformity in lithological composition and other characters of deposits. This region in the south of Serbia was much explored during the last (20th) century, in the latter half in particular, when abundant and interesting information was collected on the geology, structural pattern and mineral resources. Some of the newly collected information has been published and threw new light on the geology of the Metohiyan depression and its margin. Other data, also important, have remained unpublished in numerous documentation funds. Gaps in the geological knowledge of the Metohiyan depression and its margin, viewed through reference data, account for the missing links of many facts and fragmentation. Also, for some reason, a more comprehensive and reliable idea of the geological relationships or evolution is difficult to conceive. This work will present the idea of the Metohiya Basin as a ring structure like one resulting from a meteorite impact. In view of its form (morphology) and some indirect indications, there are few conclusive indications that it is an impact structure of about 50 km in diameter. Why? "Sometimes one should know what to look for to be able to see it". From this standpoint, so far actual facts of a certainly strong impact have neither been viewed nor their evidence searched for from any aspect (atomic-molecular, mineralogical, crystallographic, petrochemical, geoelectrical, structural, etc.). Structures in the marginal parts of the Metohiya Basin, which have different strike directions (NW-SE, NE-SW, ENE-WSW, E-W, N-S), may be well interpreted should it be accepted that they border an impact ring structure.

scholarly journals Occurrences of mineral resources in Bandipur Gondrang area of Tanahun district, central Nepal, Lesser Himalaya

2014 ◽  
Vol 2 ◽  
pp. 24-35
Author(s):  
Kabiraj Paudyal
Keyword(s):  
Mineral Resources ◽  
Mineral Deposits ◽  
Lesser Himalaya ◽  
Geological Investigation ◽  
Central Nepal ◽  
Metallic Mineral ◽  
Geological Map ◽  
Geological Control ◽  
Basic Rocks

A detailed geological investigation was carried out to assess the distribution of minerals and their geological control in Bandipur-Gondrang area of Tanahu district, a part of Lesser Himalaya in central Nepal. The area is found rich in both metallic and non-metallic mineral deposits. The main metallic minerals found are iron in Phalamdada and Labdi Khola, copper in Bhut Khola and poly-metallic deposits including suspected gold in Bhangeri Khola and Jaubari Khola-Bar Khola sections. A large deposit of inorganic carbon is found around the Gondrang-Watak area. Similarly, a good quality of green marble (metabasite) is found as decorative stone in Bagar Khola area and good quality of roofing stone in Bandipur area. In addition to these economic deposits other several sub economic to non-economic mineral are also located in the geological map of the area. Categorization of these mineral deposits is based on the probable reserve and laboratory analysis of related samples. Geological control of mineral deposits is considered to be the stratigraphic, structural, metamorphic and hydrothermal. Iron mineralization of the area is found stratigraphical control, copper deposits by magmatism of basic rocks (amphibolites), and poly-metallic deposits are related to the hydrothermal processes.

scholarly journals Computer Data Storage and Management Platform Based on Big Data

2021 ◽  
Vol 2066 (1) ◽  
pp. 012022
Author(s):  
Cheng Luo
Keyword(s):  
Big Data ◽  
Data Management ◽  
Performance Improvement ◽  
Data Storage ◽  
Nonvolatile Memory ◽  
Linear Structure ◽  
Ring Structure ◽  
Computer Data ◽  
Management Platform ◽  
A Performance

Abstract Due to the continuous development of information technology, data has increasingly become the core of the daily operation of enterprises and institutions, the main basis for decision-making development. At the same time, due to the development of network, the storage and management of computer data has attracted more and more attention. Aiming at the common problems of computer data storage and management in practical work, this paper analyzes the object and content of data management, investigates the situation of computer data storage and management in China in recent two years, and interviews and tests the data of programming in this design platform. At the same time, in view of the related problems, the research results are applied to practice. On the basis of big data, the storage and management platform is designed. The research and design adopts a special B+ tree node linear structure of CIRC tree, and the linear node structure is changed into a ring structure, which greatly reduces the number of data persistence instructions and the performance overhead. The results show that compared with the most advanced B+ tree design for nonvolatile memory, crab tree has 3.1 times and 2.5 times performance improvement in reading and writing, respectively. Compared with the previous NV tree designed for nonvolatile memory, it has a performance improvement of 1.5 times, and a performance improvement of 8.4 times compared with the latest fast-fair. In the later stage, the expansion of the platform functions is conducive to the analysis and construction of data related storage and management functions, and further improve the ability of data management.

Assessing the Long-Term Planform Dynamics of Ganges-Jamuna Confluence With the Aid of Remote Sensing and GIS

2021 ◽  
Author(s):  
Nafis Sadik Khan ◽  
Sujit Kumar Roy ◽  
Md. Touhidur Rahman Mazumder ◽  
Swapan Talukdar ◽  
Javed Mallick
Keyword(s):  
Morphological Changes ◽  
Control Strategies ◽  
Satellite Image ◽  
Linear Structure ◽  
Time Frame ◽  
Morphological Alteration ◽  
Confluence Zone ◽  
Riverbank Erosion ◽  
The Ganges

Abstract The Ganges-Jamuna-Padma confluence is one of the world's most active confluences. The confluence of two of the world's greatest rivers, the Ganges and the Brahmaputra, makes this a globally significant site. Severe erosion along the banks has been caused by morphological changes in this region. Riverbank erosion is one of Bangladesh's most serious problems, as it necessitates costly intervention. Riverbank erosion in Bangladesh affects millions of people each year as a result of erosion in this confluence zone. As a result, it's critical to comprehend the confluence's morphological changing pattern. This study aims to quantify actual bank shifting around the confluence of the Ganges, Jamuna, and Padma in terms of shifting rate and area during a twenty-five-year period (1990-2015). To conduct this study the collected satellite image were geo-referenced and digitize bank lines from using ArcGIS program. The bank line is the linear structure that divides the river channel's outer border from the flood plains. The distance between the extreme margins of the left and right banks, including mid-channel sandbars, was measured to determine channel width variation. To assess the maturity of change, this time frame is subdivided into five phases, each lasting five years. In addition, the long-term shift from 1972 to 2015 is qualitatively noticeable. This morphological alteration was studied using LANDSAT satellite images. The research gives current and trustworthy information on the Ganga-Jamuna confluence's planform dynamics. This research will be useful in the planning and execution of drainage development plans and erosion control strategies in this critical confluence zone.

Tectonique et structures post-paléozoïques en Manche occidentale

1975 ◽  
Vol 279 (1288) ◽  
pp. 41-54 ◽  
Keyword(s):  
Structural Evolution ◽  
English Channel ◽  
Tectonic Event ◽  
Structural Pattern ◽  
Geological Map

Recent seismic reflexion surveys (Géomanche I and II) have made it possible to draw up a new geological map of the western English Channel. The structural evolution of the basin can be better defined from the synthesis of available data. The structural pattern of the Mesozoic and Cenozoic cover results from the reactivating of ancient faults in the underlying basement: NE-SW (Caledonian), E-W (Hercynian), NW-SE (late Hercynian). The various tectonic stages which have shaped the structure of this basin are discussed; a new tectonic event has been observed between the Ypresian and the upper Lutetian.

On the history of the first Russian geological map

2015 ◽  
Vol 34 (2) ◽  
pp. 333-347
Author(s):  
Leonid R. Kolbantsev
Keyword(s):  
Mineral Resources ◽  
Russian Government ◽  
Central State ◽  
Rock Types ◽  
Historical Archive ◽  
History Of ◽  
Geologic Map ◽  
Geological Map ◽  
Academy Of Sciences ◽  
Mining Districts

The earliest Russian geologic map, the “Map of the Environs of the Nerchinsk Mining Establishment (1789–1794)”, was found in the Central State Historical Archive, Leningrad in 1925. At that time it was described by Presnyakov (1927). Shortly after that, the map was lost from view and was not available for study until recently. This paper investigates the provenance and history of the manuscript map in six sheets. It is likely that the Russian government commissioned the map in order to assess the mineral resources of the Nerchinsk district. The map was the result of six summer field seasons where the six base maps showing stream networks and topography were assembled using compasses and tapes. The rock types were superimposed on the base maps and depicted using different colors. The mapping effort was overseen by Egor Barboth de Marny, the director of the Nerchinsk mining establishment, and the fieldwork was undertaken by Dorofey Lebedev, Mikhail Ivanov and Alexey Cheredov. The innovative use of color may have been inspired by earlier maps of mining districts in Germany and suggested by Benedict Franz Johann Hermann, a member of the St. Petersburg Academy of Sciences.

scholarly journals Limestone Sedimentology of The Lengkong Formation at Neglasari District, Sukabumi-West Java, Based on Outcrop and Petrography

2021 ◽  
Vol 1 (2) ◽  
pp. 71-80
Author(s):  
uhammad Firdaus ◽  
Keyword(s):  
Depositional Environment ◽  
Mineral Resources ◽  
Scientific Publication ◽  
Research Area ◽  
Field Surveys ◽  
Petroleum Potential ◽  
Basin Floor ◽  
Geological Map ◽  
Map Scale ◽  
The Relationship

Research about Oligo-Miocene limestones in Java has always been interesting to study in order to understand the relationship between tectonic-volcanic, sedimentation, and petroleum potential. The Lengkong limestone formation is interesting to study especially its sedimentology aspects. There is no Scientific Publication about the Lengkong Formation which discusses detailed sedimentology aspects. Those aspects are important to modify the geological map, scale of 1: 50000 which was published by the ministry of energy and mineral resources. This research was conducted to determine the sedimentology process and development of a depositional environment of the Lengkong formation in the Cimapag River. The research area is located in Neglasari, Lengkong District, Sukabumi. The method used includes field surveys and laboratory analysis. A field survey embodies sedimentology data collection and rock sampling, which was then made into a detailed stratigraphic column. Rock samples were analyzed petrographically for 12 samples to determine microfacies. The results cover three limestone facies, namely wackestone, wackestone-packstone, and packstone facies. The sedimentation of the Lengkong Formation indicates a sea-level decrease of the Interbuild Basin Floor to Deep Marine Off reef

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.

Hermann Schlegel's investigation of the Maastricht mosasaurs

1986 ◽  
Vol 13 (1) ◽  
pp. 1-6 ◽  
Author(s):  
E. W. A. MULDER ◽  
B. THEUNISSEN
Keyword(s):  
The Netherlands ◽  
Preliminary Note ◽  
Geological Map

SUMMARY In 1852, Hermann Schlegel (1804–1884), as a correspondent of the ’Committee for the Geological Map and Description of the Netherlands’, was charged with the description of the fossil reptiles Mosasaurus and Allopleuron (Testudinata). However, as a consequence of the premature dissolution of the Geological Committee in 1855, Schlegel never completed his task. He only published a preliminary note on his investigations, which is extensively discussed in this paper. Schlegel turns out to have been the first to prove, by means of anatomical arguments, that Mosasaurus had flipper–like limbs. Furthermore, several recently discovered drawings shed new light on Schlegel's claim that some of the fossils of Mosasaurus in the famous Camper collection had been falsified.

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