Geologic structures

This comprehensive study yields an excellent correlation between gravity and remote sensing techniques in describing the general structural framework of the area. The new finding is an NE-SW trending geological structure on the northern Halmahera arm, which may be caused by two different tectonics first, the subduction of the Molucca Sea Plate with the Halmahera Plate in the west. Second, the strike-slip movement is trending NE-SW, which cuts the northern and northeastern arms due to the rotational movement of the thrust fault with the Philippine Plate to the west.

22p dianmotminh02 03-05-2024 5 1   Download

This study utilized a non-destructive technique through quadrat sampling to identify and measure mangroves’ biodiversity and carbon stock. The allometric equation was applied to quantify the carbon stock and Shannon-Wiener diversity index to determine the biodiversity. Twelve species were identified from the 36 sampling plot with 10 × 10 meter.

12p dianmotminh02 03-05-2024 3 1   Download

In the study "WebGL-based visualization tool for 3D geological structures in shallow subsurface in urban areas" to provide 3D geological information in urban areas with an easy-to-understand style on the Web, we have developed a WebGL-based visualization tool for 3D geological maps that consists of shape data of geological boundary surfaces and 3D representations of borehole data.

5p tukhauquantuong1011 22-04-2024 3 2   Download

In the research "Utilization of borehole data for correlation system of strata: A case study of Hanoi, Vietnam" the actual data of the investigation where the system was put into practice in order to estimate the subsurface structure of an area of approximately 7 km in length and 7 km in width in the city of Hanoi, using 275 borehole data, will be provided. In the stratigraphic comparison, the names of the Vietnamese soil types correspond to the Japanese soil types.

8p tukhauquantuong1011 22-04-2024 4 2   Download

This research aims to assess the stability of the Bung Xang Lake embankment in the context of changing water levels due to change climate, specifically recent high tides. In this research, data from two cross-sections were collected and analyzed using Plaxis 2D V22 software. The simulation results indicate that the piles with a length of 11.30 meters, as per the design, still fall within the deformation range of the subsoil, especially at the surveyed location with weak and thick geological conditions (MC2-2), which limits the effectiveness of the piles.

13p visergey 02-04-2024 8 1   Download

Ebook "3D, 4D and predictive modelling of major mineral belts in Europe" presents the results of the major EU project Promine. For the first time there is now a European database available on mineral deposits, as well as 3D, 4D and predictive models of major mineral belts in Europe: Fennoscandia (Skellefteå and Vihanti-Pyhäsalmi), the Fore-Sudetic basin (Kupferschiefer deposits in Poland and Germany), the Hellenic belt in northern Greece, and the Iberian Pyrite belt and Ossa Morena zone in Spain and Portugal.

330p duongthandue0501 28-02-2024 4 1   Download

Ebook "Aralkum - a Man-made desert: The desiccated floor of the Aral Sea (Central Asia)" brings together the results of international and interdisciplinary long-term studies on the new desert ecosystem and is divided into four main sections. The first section provides an overview of the physical characteristics of the area and covers geological, pedological, geomorphological and climatological aspects and their dynamics, especially dust-storm dynamics.

499p tachieuhoa 28-01-2024 4 2   Download

The shallow sea (0÷60 m of water depth) from Phu Loc (Thua Thien Hue)to Hoi An (Quang Nam) belongs to the internal shelf in Central Vietnam. This is quite a good geological structure for the land-sea interaction study, especially during the Holocene. Therefore, it is necessary to study the geological history of the area during the Holocene period.

7p viplato 02-01-2024 6 3   Download

The current design of wind power tower foundations in our country is relatively new, the design consultancies in the country do not have much experience and have not fully updated the system of standards and technical documentation in wind power project design.

11p vifriedrich 30-08-2023 8 3   Download

The results of this study will help clarify the history of geological development of the study area based on evidences that can only be observed on seismic data. Inaddition, these results also help to make orientation for explorating mineral resources in general and oil and gas resources in particular.

11p vilucius 03-03-2023 7 3   Download

Geophysical methods are effective tools for geotechnical analysis. In particular, the two-dimensional electrical resistivity method is widely applied in the determination of broken, cracked, and karst cave structures in many countries around the world. The information given by this method plays an important role in preventing and mitigating the risk of geological hazards caused by geological structures.

8p vicedric 08-02-2023 2 1   Download

This work aims at investigating the effect of aleatoric uncertainty of creep rock properties on the stability of an underground structure. This uncertainty relates to the spatial variability of the mechanical parameters representing the time-dependent behavior of geological rock formation due to the change in its mineralogy.

13p vimclaren 12-10-2022 5 2   Download

A geological interpretation of the faulting mechanism is also proposed. The existence of a new unknown source in an intermontane area is problematic. The role of inherited alpine structures seems more important today than in the past. The strike of the two new seismogenic sources, responsible for the two strongest events of the 2021 earthquake succession, differs from the previously known active faults. This forces us to reconsider older views on the direction of development of active faults and the orientation of the stress field.

11p tanmocphong 29-01-2022 20 0   Download

Varto and the surrounding region have important geothermal fields, developing in strike-slip tectonic setting in East Anatolia, which resulted from the collision of the Arabian and Eurasian plates. The main structural elements in the area are the NE-trending sinistral and NW-trending dextral strike-slip fault segments and N-S trending extension zones. In order to determine fault-controlled geothermal circulation, it is very important to fully characterize the structural elements in these complex environments.

20p tanmocphong 29-01-2022 12 2   Download

Lecture Engineering geology: Chapter 1 - Introduction. After completing this section, you will understand the knowledge about scope and approach; Typical assignments/ end users; the historical development that lead to the current state of knowledge.

23p lazzaro 03-12-2021 10 1   Download

(BQ) Lecture Engineering geology - Chapter 3: Geologic structures. After completing this section, you will understand the knowledge about identify geologic units and contacts; identify geometric characteristics of stratigraphic units and recognize a number of common geologic structures and land forms.

26p lazzaro 03-12-2021 5 1   Download

(BQ) Lecture Engineering geology - Chapter 5: Geologic maps and site investigation. After completing this section, you will understand the knowledge about represent geologic structures and geomorphic features graphically on a geologic map; prepare, use and interpret geologic maps; Prepare stratigraphic sections from a geologic map.

24p lazzaro 03-12-2021 11 1   Download

The digital elevation model and the earthquake focal mechanism are utilized to define the geological structure of the Pho Lu area, northwestern Vietnam. The results allow the identification of lineaments and recognition of the correlation between the lineaments and geological structures directed in the study area. The digital elevation model (DEM) was used in the methodology of interpretation trends of lineaments derived from various enhancing techniques to show that the most lineament trend in the NW‒ SE direction.

12p cothumenhmong12 08-07-2021 16 0   Download

This study suggests that the successful selection of a proper modelling technique should be based on the physical principle of longwall problem, texture and shape of materials, and mechanics formulation of the numerical program used for modelling. The paper’s conclusions assist numerical modellers in quickly and properly selecting modelling technique for investigating a site -specific longwall problem.

10p cothumenhmong12 08-07-2021 21 2   Download

For the purpose of ensuring sustainable development, one of the important factors is to increase labor productivity and minimize the number of workers directly working in the mine. In the context of increasing requirements for underground coal mining, the number of workers tends to decline due to shifting to other types of economy. Therefore, the mechanization investment in coal mining is the inevitable destination, which guarantees the long - term strategic development of the coal mining industry.

8p cothumenhmong9 12-01-2021 6 1   Download