In color photos, the red areas indicate live vegetation. The qualitative interpretation of magnetic data indicates elongated highly magnetized anomalies extending northeast to southwest. Bands 5, 6, and 7 were chosen to map phyllic alteration zones. … Tennants Creek, NT and Water Tank Hill, WA). ;_V���5yrv��:YاQ����S��_����n�y_��F���d�X�Bf���Y�2����~_fv��Ghc�����߭7��/m�x(�K�y��1I�qN� -Authors. A method for rapidly making depth estimates from large amounts of magnetic data is described. The results of the resistivity and IP inversion indicate that there are conductive and chargeable bodies at a depth that indicate the shape of small Mn-Fe lenses being present and conform to the shape of the Mn-Fe ore mineralization. The results of resistivity inversions indicated that there are many conductive bodies, which have resistivity values < 100 Ω m. Three electric resistivity tomography lines are made trending east-west perpendicular to the direction of exposed ore in the area. endstream endobj startxref Number of exercises has made to optimize the parameters such as ACF, SF and depth using various iterations. Geol. The integrated analysis resulted in a potential target for future exploration, in addition to the optimization of application of financial resources in probing procedures. 112 0 obj <>/Filter/FlateDecode/ID[<387C95F69D31264FA4D1B56B02EA4FDE><4AC4DDFAD48094498A2AB497AF4AABCD>]/Index[100 28]/Info 99 0 R/Length 71/Prev 644677/Root 101 0 R/Size 128/Type/XRef/W[1 2 1]>>stream The course text book is: An Introduction to Geophysical Exploration, by P. Kearey, M. Brooks and I. Hill, 3rd edition Blackwell Science, 2002, ISBN0632049294, cost new ~ £30. Schematic resistivity (c) and chargeability (d) distribution models showing possible extension of a part of the BBA. • Outcropping and near‐surface discoveries are now rarer. Geophysical Exploration for Gold: A Major Company Perspective Barry Bourne PDAC 2011 Geophysics Session Toronto –March 8th, 2011. The results of 2D-resistivity and IP inversions indicated that there are anomalous zones of high conductivity and chargeability; indicating probable locations of ore deposits and/or disseminated minerals. approaches zero as the structure approaches a horizontal sheet. In some areas, anomalies several kilometers wide correlate with regions of known elevated thermal gradient or heat flow. This definition of effective depth is applied to other electrode arrays. mineralogical analyses from two ﬁeld samples have indicated, that the ore bodies, which have been detected from geophysical, interpretation, are rich with gold content of 5–502.5 g ton, From the interpretation of the geological, geophysical and. Introduction The Loulitou district is located in the middle part of Zhaoyuan-Pingdu fault, which provides a good target for further prospecting and exploration. geochemistry data we can conclude the following. Therefore, EULDPH can be applied in a wider variety of geologic situations than can model-dependent techniques. However, an understanding of the geolog- ical processes involved and their relationship to the physical parameters mea- GEOPHYSICAL EXPLORATION FOR EPITHERMAL GOLD DEPOSITS 377 sured by geophysical surveys facilitates the choice of cost-effective methods in individual cases. In order to locate the possible locations of gold orebodis, multiple geophysical methods were applied. These geochemical methods play a key role in gold exploration in Gansu, particularly during reconnaissance exploration. Geophysics has an important role in this search and gravity and magnetic surveys together with sound geological reasoning have been responsible for the discovery of four important goldfields. A third synthetic case involves a multisource model. bodies at depths ranging from 15 to 65 m. results, two suggested borehole sites were selected before carrying out any future, Geophysical tools, including different techniques such as, magnetic, self-potential (SP), induced polarization (IP) and, methods were used for mineral exploration (Macnae, exploration, as well as for hydrological and environmental, potential (SP) method has a wide range of applications in, engineering and geotechnical investigations (Corwin, minerals, particularly metallic sulﬁdes (Corry, mineral exploration, but in the present work the authors hav, used different tools for integrated interpretation to estimate. Exploration Geophysicists, 1966; 1990) and have been summarized in Hoover and others (1992). mineralized ore bodies in terms of depth and extension. Firstly, IP intermediate gradient measurements were carried out in the Houtuan and Banbidian districts, and initial targets were proposed. The quantitative interpretation of self-potential anomalies was, carried out using two techniques; the ﬁrst is a new algorithm, Optimization (PSO) and the second is the code constructed by, The SP anomaly produced by some polarized structures, along a principal proﬁle over the body is given by Y, horizontal cylinder (2D) and a semi-inﬁnite vertical cylinder. Not too noisy mineral exploration sampling, analysis and interpretation ofsp anomalies, two-dimensional finite sheet are. Session Toronto –March 8th, 2011 extending in depth were interpreted as a saturated fracture network enabling the upflow deep... 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