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

Geophysics ◽  
1955 ◽  
Vol 20 (4) ◽  
pp. 871-885 ◽  
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.

Discussion on “Line Spacing Effect and Determination of Optimum Spacing Illustrated by Marmora, Ontario, Magnetic Anomaly,” by W. B. Agocs, 1955, Geophysics, v. XX, p. 871- 855.

Geophysics ◽  
1966 ◽  
Vol 31 (3) ◽  
pp. 638-638 ◽  
Author(s):  
P. Boisard
Keyword(s):  
Magnetic Anomaly ◽  
Spacing Effect ◽  
Optimum Spacing ◽  
Line Spacing ◽  
On Line

Recently we took a great interest in reading the paper: “Line Spacing Effect and determination of optimum Spacing illustrated by Marmora, Ontario, Magnetic Anomaly” by W. B. AGOCS, no. 4, vol. XX of Geophysics (October 1955), p. 871-885, 10 fig.

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

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.

scholarly journals EXPERIMENTAL DETERMINATION OF STRESS PARAMETERS IN THE MINING FIELD

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.

Exploration of Siling iron ore deposit in Shanxi Province

2019 ◽  
Vol 1 (2) ◽  
pp. 37-41
Author(s):  
Su Kangjie ◽  
Yuan Ya
Keyword(s):  
Iron Ore ◽  
Shanxi Province ◽  
Ore Deposit ◽  
Iron Ore Deposit

THE PILOT KNOB IRON ORE DEPOSIT IN SOUTHEAST MISSOURI, USA: A HIGH-TO-LOW TEMPERATURE MAGMATIC-HYDROTHERMAL CONTINUUM

2019 ◽  
Author(s):  
Bolorchimeg Nanzad ◽  
◽  
Marek Locmelis ◽  
Brandon James Sullivan ◽  
Ryan Mathur
Keyword(s):  
Low Temperature ◽  
Iron Ore ◽  
Ore Deposit ◽  
Southeast Missouri ◽  
Iron Ore Deposit

Three-dimensional geomechanical model of the Tashtagol iron-ore deposit

1998 ◽  
Vol 34 (3) ◽  
pp. 209-216 ◽  
Author(s):  
L. A. Nazarova ◽  
L. A. Nazarov ◽  
A. V. Leont'ev
Keyword(s):  
Iron Ore ◽  
Three Dimensional ◽  
Geomechanical Model ◽  
Ore Deposit ◽  
Iron Ore Deposit

Resource and reserve analysis of Hasançelebi Iron Ore deposit, Turkey

2018 ◽  
pp. 199-202
Author(s):  
B. Elevli ◽  
A. Demirci ◽  
A. Dogan ◽  
G. Onal
Keyword(s):  
Iron Ore ◽  
Ore Deposit ◽  
Iron Ore Deposit

scholarly journals Geophysical surveys of rock mass status of iron ore deposit with combined deep – opencast mining zone

2020 ◽  
Vol 177 ◽  
pp. 02006
Author(s):  
Andrey Vedernikov ◽  
Pavel Zuev ◽  
Danila Grigoriev
Keyword(s):  
Iron Ore ◽  
Diagnostic Method ◽  
Underground Mining ◽  
Opencast Mining ◽  
Combined Method ◽  
Ore Deposit ◽  
Seismic Profiling ◽  
Geophysical Surveys ◽  
Iron Ore Deposit ◽  
Underground Method

Often in deposits developed by underground mining, the task is to control the state of the earth's surface within the mine field. And this problem is even more acute in the case of combined open-underground mining. The Goroblagodatskoe iron ore deposit has been developed by a combined method for more than 40 years. The article describes the methodology and results of applying the geophysical diagnostic method at a mining facility developed by a combined open-underground method - the spectral seismic profiling method (SSP). The application of this method is justified. This method has shown its sufficient efficiency in terms of time costs and sufficient reliability for local studies. The results of field and desk studies are obtained, an assessment of the nature of the object is given, which justifies the use of further measures for the safe development of the object.

Sign in / Sign up

Export Citation Format

Share Document