Integrating Core and Aeromagnetic Datasets to Evaluate Mineral Potential of Southern Nupe Basin, Nigeria

Abstract Aeromagnetic and core drilled data covering parts of southern Nupe Basin was acquired and interpreted with the view to evaluating the mineral potentials of the area through interpretation of the structural features in the area; determination of the curie isotherm depth; and correlation of aeromagnetic outcomes with the core sample data from the area. Two major regional fault trends were interpreted, trending, Northeast–Southwest (NE–SW) and NNE–SSW with minor northwest–southeast (NW–SE) directions. Two depth sources in the area are delineated namely; zone of shallow seated basement which ranges from 0.42km to 1.5km and zone of deeply seated basement which ranges from 1.91 to 3.50km.Results of qualitative interpretation of the Total magnetic intensity map (TMI) and Residual intensity map reveal that the magnetic intensities ranges from 7500 to 8460 nano-Telsa (nT) and -220 to 240 nT respectively. The depth to the centroid and top of the magnetic caustic bodies ranges from 9.00 to 17.10km and 0.4 to 3.10km respectively. Juxtaposing the topographical and core drilling data reveals that the oolitic iron ore level follows the topographical level which implies that the topography of the area controls the configuration of the iron ore deposit level. All these deduction are made considering the geology of the area.

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Nový pohled na genezi ordovické oolitické rudy z ložiska Skalka u Mníšku pod Brdy (pražská pánev, Barrandien)

Geologické výzkumy na Moravě a ve Slezsku ◽

10.5817/gvms2019-1-2-80 ◽

2019 ◽

Vol 26 (1-2) ◽

Cited By ~ 1

Author(s):

David Buriánek ◽

Miroslav Bubík ◽

Dalibor Všianský

Keyword(s):

Deep Water ◽

Iron Ore ◽

Original Position ◽

Iron Ores ◽

Ore Deposit ◽

Prague Basin ◽

Gravity Flows ◽

Marine Realm ◽

Oolitic Iron Ore ◽

Iron Ore Deposit

The Skalka Deposit near Mníšek pod Brdy currently represents one of the best exposed localities of Ordovician oolitic iron ores in the Barrandian. The studied oolitic iron ores consist mainly of siderite (Fe = 1.47–1.86 apfu) and kaolinite (Si = 7.99–8.06 apfu; VIAl = 7.62–7.67 apfu). This mineral association has been formed as a result of the process of diagenesis and has resulted from the decomposition of chlorite and Fe-(oxo-)hydroxides. Presence of colofane indicates rather low temperatures for this transformation. Paleontological record makes the previous hypothesis, that the iron ore deposit was formed in an isolated depression separated from the Prague Basin by a flat elevation, questionable. The presence of abundant graptolites and agglutinated foraminifers in the shales of the Šárka Formation indicates rather deep-water open-marine conditions. Ferruginous ooids are typically formed on shoals affected by wave action. The presence of these ooids in deep-water shale and existence of oolitic iron ore deposit accompanied by this shale does not need to be explained by sudden shallowing, but more likely by reworking of ooids in gravity flows to sublittoral or bathyal depths. Original position of shoal was most likely situated towards NNW where ore deposit and finally the complete Šárka Formation disappear. The fossil record indicates open-marine realm southeast of the Skalka area.

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STUDIES THE FORMATION OF A SINKHOLE CONTOUR IN THE AREA OF MOUNTAIN BOULANGER

Vestnik SSUGT (Siberian State University of Geosystems and Technologies) ◽

10.33764/2411-1759-2021-26-2-28-36 ◽

2021 ◽

Vol 26 (2) ◽

pp. 28-36

Author(s):

Viktor S. Pisarev ◽

Keyword(s):

Unmanned Aerial Vehicles ◽

Iron Ore ◽

The South ◽

Mining Operations ◽

Ore Deposit ◽

South Eastern ◽

Aerial Vehicle ◽

Iron Ore Deposit ◽

Obser Vations

The relevance of the study is to develop a methodology for monitoring manufacturing objects us-ing unmanned aerial vehicles formed as a result of mining operations. The Tashtagol iron ore deposit is located in the south of the Kemerovo region in Gornaya Shoria, and is being worked underground. The development of the reserves of the South-Eastern section has been carried out since 2004 by the Tashtagol branch of company Evrazruda. A special feature of the South-Eastern section reserves min-ing is the operation of protected objects within the zone of potential hazardous displacements, as a re-sult of which, presumably in November 2017, a sinkhole was formed in the area of Mount Boulanger. The aim of the work is to describe the method of monitoring the determination of the geometric dimensions of the sinkhole in different periods of time using an unmanned aerial vehicle. The sinkhole development has been monitored since 2018. As a result, this study determines the geometric dimensions of the sinkhole in different periods of obser-vations, and calculates the average sinkhole increase dynamics of the per year.

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LINE SPACING EFFECT AND DETERMINATION OF OPTIMUM SPACING ILLUSTRATED BY MARMORA, ONTARIO MAGNETIC ANOMALY

Geophysics ◽

10.1190/1.1438197 ◽

1955 ◽

Vol 20 (4) ◽

pp. 871-885 ◽

Cited By ~ 14

Author(s):

W. B. Agocs

Keyword(s):

Iron Ore ◽

Spacing Effect ◽

Economic Value ◽

Maximum Dimension ◽

Ore Deposit ◽

Optimum Spacing ◽

Line Spacing ◽

Magnetometer Data ◽

Iron Ore Deposit

The airborne magnetometer data of the Marmora iron ore deposit at Marmora, Ontario have been used as an example to show the results obtained by the use of various line spacings ranging from 1 mile to 1/4 mile. The maps show how easy it is, in any type of geophysical survey, to miss a feature of economic value if the line spacing is too coarse. The probability equations are given for the crossing of randomly oriented features whose maximum dimension is less than the spacing of the control lines for circular, elongate, and rectangular outlines. The equations are [Formula: see text]; [Formula: see text]; [Formula: see text]; [Formula: see text]; [Formula: see text]; and [Formula: see text]; respectively where P is the probability; D is the diameter; L is the length; W is the width; and S and T are line spacings.

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EXPERIMENTAL DETERMINATION OF STRESS PARAMETERS IN THE MINING FIELD

Interexpo GEO-Siberia ◽

10.33764/2618-981x-2021-2-4-123-129 ◽

2021 ◽

Vol 2 (4) ◽

pp. 123-129

Author(s):

Alexander A. Skulkin

Keyword(s):

Rock Mass ◽

Stress State ◽

Stress Concentration ◽

Iron Ore ◽

Ore Deposit ◽

Measuring Station ◽

Induced Field ◽

Iron Ore Deposit ◽

Stress Parameters

The experience of measuring the stress state of the rock mass at the Tashtagol iron ore deposit and the result of stresses acting in the induced field in the vicinity of 10 orts at a depth of 800 m from the daily surface (horizon -350) is presented using the method of measuring hydraulic fracturing. Stress concentration zones around the mine are determined at the measuring station.

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DETERMINATION OF THE TYPE OF A SINGLE-USE GRENADE LAUNCHER BASED ON ITS COMPOSITE PARTS AND FRAGMENTS OF REACTIVE GRENADE FOUND AT THE PLACE OF ACCIDENT

Theory and Practice of Forensic Science and Criminalistics ◽

10.32353/khrife.2017.31 ◽

2017 ◽

Vol 17 ◽

pp. 245-252

Author(s):

V. V. Somov

Keyword(s):

Combustion Chamber ◽

Structural Features ◽

Outlet Section ◽

Technical Expertise ◽

Jet Engine ◽

Size Ofthe ◽

Single Use ◽

Nozzle Block ◽

Considerable Damage

In carrying out an investigation into the explosion, among others, the investigative version of the use of a single-use reactive grenade launcher is being considered. The most common for criminal explosions are applied grenade launchers RPG-18, RPG-22, RPG-26. Their use is due to a number of such properties as small size and weight, which makes it possible to transfer them covertly, the range of the shot significantly exceeding the range of the hand grenade throw, the high detonating effect of the rocket grenade explosion. The single-use rocket launchers are generally of the same design. Their differences are in the features of the components construction and dimensional characteristics, which are given in the article. On the basis of expert practice, details ofgrenade launchers that remain at the site of the explosion and have the least damage are determined. These details are the objects of investigation of the explosion technical expertise. These objects include launchers of grenade launchers and rocket parts ofjet grenades. The design features of the launchers, their dimensional characteristics and marking symbols make it possible to determine their belonging to a specific type of jet grenade launchers. Missile parts of jet grenades differ in the form of the combustion chamber of the jet engine, nozzle, in the size ofthe outlet section of the nozzle, in the form and size of the stabilizerfeathers. To determine the belonging of the rocket part of the grenade to a specific type ofjet grenade launcher, it’s necessary to establish a set of structural features and dimensional characteristics. At considerable damage of the combustion chamber of the jet engine, as a rule, the nozzle block remains intact that allows to define diameter of critical section of a nozzle, and on it to establish type of the used single-use grenade launcher.

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Determination of Optimum Parameters for Anaerobic Thermophilic Bacterium Injection using Commercial Simulator: Core Flooding Validation and Sensitivity

Proc. Indon. Petrol. Assoc., Digital Technical Conference, 2020 ◽

10.29118/ipa20-se-530 ◽

2020 ◽

Author(s):

A. Koto

Keyword(s):

Oil Recovery ◽

Simulation Experiment ◽

Previous Experiment ◽

Core Sample ◽

Thermophilic Bacterium ◽

Injection Rate ◽

Core Flooding ◽

Optimum Parameters ◽

Result Show

The objective of this paper is to determine the optimum anaerobic-thermophilic bacterium injection (Microbial Enhanced Oil Recovery) parameters using commercial simulator from core flooding experiments. From the previous experiment in the laboratory, Petrotoga sp AR80 microbe and yeast extract has been injected into core sample. The result show that the experiment with the treated microbe flooding has produced more oil than the experiment that treated by brine flooding. Moreover, this microbe classified into anaerobic thermophilic bacterium due to its ability to live in 80 degC and without oxygen. So, to find the optimum parameter that affect this microbe, the simulation experiment has been conducted. The simulator that is used is CMG – STAR 2015.10. There are five scenarios that have been made to forecast the performance of microbial flooding. Each of this scenario focus on the injection rate and shut in periods. In terms of the result, the best scenario on this research can yield an oil recovery up to 55.7%.

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