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Geomorphological techniques in locating sites for artificial recharge: A Case Study from a drought-prone hard-rock terrain in eastern India.
Published in Peter J. Dillon, Management of Aquifer Recharge for Sustainability, 2002
A thorough local and regional hydrogeological understanding is necessary for an effective development of groundwater resources especially in areas where bedrock has low primary porosity and where the intersections of structural features are crucial for successful exploration (Babu Rao and Seshu Babu, 1997). The application of remote sensing is increasing relentlessly, and it is especially valuable in the initial reconnaissance stage of terrain analysis and evaluation with a view to assessing resources (Hart, 1986). During the last two decades, satellite based remote sensing has been proved to be efficient in mapping the suitable areas for groundwater prospecting on different scales.
Selection of optimum design measures for foundations and footings
Published in B.I. Dalmatov, R.B. Zeidler, Soil Mechanics, Footings and Foundations, 2020
In foundation design for a group of structures (buildings) or a free-standing object one must first of all assess the engineering-geological and hydrogeological conditions of the potential construction site. The objects should be configurated in such a manner as to secure construction in favourable areas (with highest quality of soil, groundwater table below the design datum of foot, mild topography, etc.). The engineering-geological conditions of the construction site are assessed by thorough examination of prospecting data, including the field and laboratory test data, static and dynamic probing, or even results of tests on piles or piled foundations.
Overview of the mining business
Published in Odwyn Jones, Eric Lilford, A.J.S. Spearing, Grantley Taylor, The Business of Mining, 2019
Odwyn Jones, Eric Lilford, A.J.S. Spearing, Grantley Taylor
The following are the stages involved in a mine life cycle: Literature review – This involves reviewing published data available from, say, the country’s geological survey or equivalent and any data from previous exploration activity.Prospecting – This is the first stage of exploration and generally involves considerable hard work by geologists (‘foot slogging’ frequently).Exploration – Once a target location has been identified, the exploration of it to establish its viability is undertaken, keeping costs as low as possible in case it proves uneconomic. Prospecting and exploration are the domains of geologists and geophysicists.Development – Development involves the construction of the mine site including access, provision of services, any processing facility, the mine access and future waste handling/disposal systems.Exploitation – This involves the production of the saleable product from the mine. Development and exploitation are the domain of the mining engineer and metallurgist.Reclamation/rehabilitation – This needs to be detailed and future funding generally obtained before development can start and is a key part of the permitting process as is the environmental impact study with its protections. As may be applicable, it is critical from the exploration stage to actively involve any local communities.
Compositional characteristics of mineralised and unmineralised gneisses and schist around the Abansuoso area, southwestern Ghana
Published in Applied Earth Science, 2023
Raymond Webrah Kazapoe, Olugbenga Okunlola, Emmanuel Arhin, Olusegun Olisa, Daniel Kwayisi, Elikplim Abla Dzikunoo, Ebenezer Ebo Yahans Amuah
The study area lies within one of Ghana’s six known Birimian Greenstone Gold Belts, the Sefwi-Bibiani Greenstone Belt (Figure 1). There are varying degrees of gold mineralisation in the vicinity of these belts (Perrouty et al. 2012). Two of the six Greenstone Gold Belts are home to the most productive mines, while the remaining four have been subject to advanced exploration and modest mining. In the Sefwi-Bibiani Greenstone Gold Belt, gold mining and prospecting have a rich history. The Belt contains some of the most renowned mines, such as the Chirano, Kenyasi, and Bibiani mines (Griffis et al. 2002; Kazapoe et al. 2021). On the Belt, there are a few small to medium-sized businesses whose exploration and mining operations are in varying stages of development and success (Griffis et al. 2002). Subriso-Nfante is the location of the research area in the Ahafoano North District of the city of Ahafoano.
Dispersion and absorption study of SH waves in sinusoidally corrugated heterogeneous viscoelastic layer sandwiched between heterogeneous isotropic half-space and magnetoelastic monoclinic half-space
Published in Waves in Random and Complex Media, 2021
The subject of magnetoelasticity is concerned with the interactions between strain and the electromagnetic field. The electromagnetic field and the elastic field are co-related to each other. Therefore, with the introduction of Lorentz force in the elastic stress equation of motion, the electromagnetic field can influence the elastic field. On the other hand, the elastic field can also influence the electromagnetic field by the modification in Ohms Law. Thus, a coupling phenomenon occurs. This phenomenon has a myriad of applications in the field of acoustics, optics, geophysics and oil prospecting. The theory of magnetoelasticity was introduced by Knopoff [11] and Chadwick [12] and advanced by Kaliski and Petykiewicz [13]. The development in the interaction of the electromagnetic field with the motion of the deformable solid is available in many works done by Maugin [14], Du et al. [15], Singh et al. [16], Gupta and Bhengra [17], and Alam et al. [18].
Gravity-magnetic cross-gradient joint inversion by the cyclic gradient method
Published in Optimization Methods and Software, 2020
Gravimetric and magnetic explorations are two important methods in geophysical prospecting [13,23,31]. Both methods are volume explorations and can be performed quickly and economically. The gravimetric prospecting is the measurement of gravimetric anomalies which are caused by geological bodies. These anomalies are completely different from those caused by the surrounding rocks, which are used to determine the spatial location, size and shape of these geological bodies. As long as the buried geological body has a certain residual mass, the burial depth is small and the topographic fluctuation has little influence, gravity anomalies can be measured by gravimetric survey [19]. Similarly, magnetic prospecting is a geophysical method to study the distribution of geological structure, mineral resources or other prospecting objects through observations and analysis of magnetic anomalies caused by magnetic differences among rocks, ores or other prospecting objects. Magnetic exploration studies magnetic anomalies, which are mainly caused by the magnetization of magnetic rocks (ores) in the magnetic field of the earth. The main task of magnetic exploration is to determine different parameters according to the measured magnetic anomaly [19]. The parameters include the geometric parameters (position, shape, size, occurrence) and magnetic parameters (magnitude and direction of magnetization) of the magnetic body which causes the magnetic anomaly [30].