Geological data interpretation at the stage of operational exploration of gold-bearing ore deposits

2021 ◽  
pp. 29-41
Author(s):  
P.A. Smirnov ◽  
I.A. Vorotyntseva ◽  
N.N. Barabanov ◽  
A.A. Lagutina ◽  
M.O. Lozhkin
Keyword(s):  
Data Interpretation ◽  
Ore Deposits ◽  
Geological Data ◽  
Gold Bearing

scholarly journals Gold Deposits in Chile

2021 ◽  
Vol 48 (1) ◽  
pp. 1
Author(s):  
José Cabello
Keyword(s):  
Porphyry Copper ◽  
Gold Deposits ◽  
Ore Deposits ◽  
Gold Content ◽  
Base Metals ◽  
Porphyry Copper Deposits ◽  
Copper Deposits ◽  
Mineralization Age ◽  
Low Sulfidation ◽  
Gold Bearing

A review of gold and gold bearing base metals deposits in Chile, indicate the existence of at least six different type of ore deposits, most largely formed during the Cenozoic with predominance in the Miocene. Mesozoic deposits are common but less relevant regarding their size and gold content. These hydrothermal ore deposits are genetically associated with subduction related Andean arc magmatism. Due to its relationship with episodic magmatism migrating eastward, there is a tendency for the deposits to be in distinct, north-south trending, belts with a progressive west to east decrease in mineralization age. After analysing 82 cases in total, main gold concentration can be assigned to high-sulfidation epithermal and porphyry type deposits. Low-sulfidation epithermal, IOCG and mesothermal type appears as less relevant. Gold bearing copper deposits constitute an important part of Chile’s total gold production. Both IOCG type but especially porphyry copper deposits are and will remain as a substantial source to supplement the future output of the gold in the country. The 82 deposits with their tonnage and grade studied, represent a total gold content of 11,662 t equivalent to 375 Moz, excluding past production for those exploited. A number of probable gold bearing base metals high tonnage deposits (IOCG and porphyry copper) do not include their gold content in public format, hence the number delivered could be estimated conservative. Methodical geochronological, ore types and zonation studies are required to better appreciate this metallogenic setting widening current understanding and future exploration results.

scholarly journals STRUCTURAL FEATURES OF THE DEEP STRUCTURE OF THE SOUTHEASTERN YANA-KOLYMA FOLD SYSTEM FROM COMPLEX GEOPHYSICAL DATA

2020 ◽  
Vol 11 (4) ◽  
pp. 697-709
Author(s):  
N. K. Gayday ◽  
N. A. Goryachev ◽  
I. M. Khasanov ◽  
E. Yu. Goshko
Keyword(s):  
Deep Structure ◽  
Data Interpretation ◽  
Structural Features ◽  
Development Planning ◽  
Ore Deposits ◽  
Orogenic Belt ◽  
Physical Parameters ◽  
Complex Data ◽  
Entire Study ◽  
Crustal Density

Ore deposits of the Magadan region are now in the focus of comprehensive studies as information on their deep structure is needed for both subsoil prospecting and regional development planning. This article presents the research results for the southeastern flank of the Yana-Kolyma orogenic belt. This area located at the junction with the Okhotsk-Koryak orogenic belt was investigated using the northeastern segment of the regional geophysical profile 3-DV. We analyzed the frequency-energy sections of the crust along the profile, 3D crustal density model of the entire study area, and magnetic, geoelectric and gravimagnetic characteristics of the crust. Complex data interpretation allowed tracing the crustal fault zones, areas wherein the crust material was strongly reworked, and zones of quasi-horizontal stratification. Considering the revealed features of the physical parameters of the crust material, we conclude that the currently accepted boundaries of individual tectonic blocks in the study area need to be adjusted. The northern boundary of the Balygychan uplift should be mapped along the Pautov fault. The Srednekansky branch of the Inyali-Debinsky synclinorium should be considered a transitional block that belongs to the Sugoi synclinorium, and its name should be changed to the Orotukan block.

scholarly journals Adjustment of the Exploration Grids and its use to increase the Reliability of Geological Models of Coal Deposits

2020 ◽  
Vol 174 ◽  
pp. 01063
Author(s):  
Tamara Rogova ◽  
Sergey Shaklein
Keyword(s):  
Extreme Values ◽  
Data Interpretation ◽  
New Method ◽  
Geological Data ◽  
Geodetic Networks ◽  
Specific Measurement ◽  
Geological Modelling ◽  
Coal Deposits ◽  
Geological Models ◽  
Current Procedure

The current procedure for determining the boundaries of geological domains, the allocation of which is the mandatory element of digital geological modelling, does not entirely take into account the specifics of coal deposits. Without its improvement, it is impossible to increase the reliability of geological models used in the implementation of the “Industry 4.0ˮ strategy. A new method for analysis of geological data is supposed – the adjustment of the exploration grids method. It is to determine the corrections for values of measured parameters, the use of which eliminates the uncertainty of geological data interpretation. The correction values determined by the method of conditional measurements, which used at equalization geodetic networks. Corrections are considered as an indicator of the significance of measurement and interpolation errors which occurs in the vicinity of specific measurement points. The measured values of parameters are not corrected. Geological domains are the areas with close in values corrections, whose boundaries are corrections isolines. Separate single corrections of anomalous magnitude indicate the presence of extreme values parameters.

Metal Resources in Ancient Anatolia

1978 ◽  
Vol 28 ◽  
pp. 97-102 ◽  
Author(s):  
Prentiss S. De Jesus
Keyword(s):  
Natural Resources ◽  
Recent Article ◽  
Ore Deposits ◽  
Original Form ◽  
Geological Data ◽  
The West ◽  
The Rich

The rich metal deposits of Anatolia have been, for archaeologists and historians, a matter of much confusion. Small wonder, when we discover that the reporting of the basic geological data through the years has been altered, interpreted and reinterpreted to the extent that the picture no longer resembles its original form. Particularly lacking in the archaeological literature on Anatolian metal resources is an up-to-date account of the metalliferous deposits available in antiquity. Although a number of attempts have been made to give an over-all view of Anatolia's ore deposits, much of the potentially useful data is published in geological journals which, unfortunately, have been routinely ignored for their archaeological importance.The recent article in this journal by J. Yakar is another of the attempts to interpret the movements of Anatolian peoples with respect to the natural resources of the land, in this case metal resources. However, Yakar's article draws on much out-dated information, and he is a victim of the often rash convictions of Forbes. As a corrective, let us focus on the basic geological data. Yakar suggests that the metal resources of the West and Southwest were the main impetus behind Hittite involvement in the region.

scholarly journals Localisation of gold ores in faults of different types

2020 ◽  
pp. 33-43
Author(s):  
E. M. Nekrasov
Keyword(s):  
Fault Zones ◽  
Gold Deposits ◽  
Ore Deposits ◽  
Gold Ores ◽  
Gold Ore ◽  
North East ◽  
Ore Bodies ◽  
Different Types ◽  
Local Shift ◽  
Gold Bearing

The results of the author’s and general works of domestic and foreign geologists, who studied the location of the largest gold deposits in fault zones, characterised by the structure of ore-bearing zones and the concentration of reserves of ores and gold of different scale in them, are presented. The main reasons for such differences are considered. The longest faults on our planet are regional shifts. They are continuously traced for hundreds (up to 1,400) of kilometres along the boundaries of gold-bearing belts and provinces. However, gold ore deposits are located in their zones at extremely limited (point) intervals not exceeding 3—5 km. They are always enclosed between ancient transverse or oblique-oriented fractures of deep, most likely mantle, formation and penetration. In all mineralised faults, gold ore bodies are localised in various geological and structural traps, which are considered in the article and are reflected in the plans and sections. The crossing nodes of regional shifts, as well as overfaults and faults of transverse faults (and dislocations), act as the main promising objects in the deposits search and exploration. Obviously, such nodes should be considered as direct signs of the possible evidence of gold ores. The internal structure of the world leader, gold-bearing Muruntaussky (North-East) local shift (Uzbekistan), studied in detail by the author and other geologists, is given as an example.

scholarly journals COMPLEX ANALYSIS OF GEOLOGICAL DATA AND OF HIGHSPEED MODEL MMS IN THE CENTRAL CAUCASUS SECTIONS

2016 ◽  
Author(s):  
В.Б. Заалишвили ◽  
Х.О. Чотчаев
Keyword(s):  
Natural Gas ◽  
High Speed ◽  
Complex Analysis ◽  
Ore Deposits ◽  
Geological Data ◽  
Innovation Development ◽  
Tectonic Processes ◽  
Microseismic Sounding ◽  
Tectonic Disturbances ◽  
Central Caucasus

В статье рассмотрены потенциальные возможности метода микросейсмического зондирования в условиях глубинного проявления тектонических процессов. Приводятся экспериментальные подтверждения соответствия аномальных объектов на скоростной модели ММЗ (метод микросейсмического зондирования) с известными структурами и тектоническими нарушениями, расположенными на значительных глубинах. Делается предположение, что ММЗ имеет перспективное будущее и может стать направлением инновационного развития не только для исследования глубинных и нефтегазовых структур, но и при поисках рудных месторождений Potential possibilities of the microseismic sounding method under the conditions of the tectonic processes deep manifestation are examined. Experimental confirmation of the anomalous objects correspondence on the high-speed model MMS (microseismic sounding method) with the known structures and the tectonic disturbances, located on the significant depths is given. Assumption that MMS has promising future and can become a trend in innovation development not only for investigating the deep natural gas structures, but also with the searches for ore deposits is done

scholarly journals About the ore conduits at the near-surface deposits of gold-silver ores

2017 ◽  
pp. 37-49
Author(s):  
E. M. Necrasov ◽  
L. A. Dorozhkina
Keyword(s):  
Noble Metals ◽  
Ore Deposits ◽  
Depth Interval ◽  
Near Surface ◽  
Ore Bodies ◽  
Gold Silver ◽  
Exploration Drilling ◽  
Gold Bearing

It is shown that at the rather numerous near-surface gold-silver ore deposits (sometimes with tellurides), developed in the East of Russia, the fractured ore conduits can be revealed. From them, the bundles and a series of vein-veinlet ore bodies or metasomatic gold-bearing rocks start. In both cases the areas with bonanza contents of the noble metals are established. The portion of their stocks sometimes reaches 70% in a total. Exploration drilling along the barren flanks of the ore-conducting channels can identify new ore, hidden in the depth interval from 100-200 to 400 meters or more, and replenish stocks of the deposits.

Sign in / Sign up

Export Citation Format

Share Document