GB1272067A - Methods of prospecting for buried mineral zones - Google Patents

Methods of prospecting for buried mineral zones

Info

Publication number
GB1272067A
GB1272067A GB2863768A GB2863768A GB1272067A GB 1272067 A GB1272067 A GB 1272067A GB 2863768 A GB2863768 A GB 2863768A GB 2863768 A GB2863768 A GB 2863768A GB 1272067 A GB1272067 A GB 1272067A
Authority
GB
United Kingdom
Prior art keywords
magnetic field
mineral
current
ambient magnetic
june
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2863768A
Inventor
Merrick George Holden
John Iwan Roschuk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CENTRAL GEOPHYSICS Ltd
Original Assignee
CENTRAL GEOPHYSICS Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CENTRAL GEOPHYSICS Ltd filed Critical CENTRAL GEOPHYSICS Ltd
Priority to GB2863768A priority Critical patent/GB1272067A/en
Priority to FR6919864A priority patent/FR2010981A1/fr
Publication of GB1272067A publication Critical patent/GB1272067A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/02—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with propagation of electric current

Abstract

1,272,067. Geophysical surveying. CENTRAL GEOPHYSICS Ltd. June 11, 1969 [June 15, 1968], No.28637/68. Heading G1N. Buried deposits 13 of a mineral are detected by (i) determining the strength of the ambient magnetic field at a predetermined point; (ii) passing a current through the earth in the vicinity of the point by means of electrodes 11, 12 and a power supply; (iii) abruptly terminating the current; (iv) measuring the ambient magnetic field strength immediately after cessation of current flow when it is modified by effects due to induced polarization of the mineral deposits (v) and comparing the two magnetic field measurements any difference being indicative of the presence of mineral sulphide at the test location. It is not necessary that the measurement of the ambient magnetic field be effected at the same time as that due to induced polarization effects but the compared measurements must be made at the same position.
GB2863768A 1968-06-15 1968-06-15 Methods of prospecting for buried mineral zones Expired GB1272067A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2863768A GB1272067A (en) 1968-06-15 1968-06-15 Methods of prospecting for buried mineral zones
FR6919864A FR2010981A1 (en) 1968-06-15 1969-06-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2863768A GB1272067A (en) 1968-06-15 1968-06-15 Methods of prospecting for buried mineral zones

Publications (1)

Publication Number Publication Date
GB1272067A true GB1272067A (en) 1972-04-26

Family

ID=10278751

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2863768A Expired GB1272067A (en) 1968-06-15 1968-06-15 Methods of prospecting for buried mineral zones

Country Status (2)

Country Link
FR (1) FR2010981A1 (en)
GB (1) GB1272067A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MA18895A1 (en) * 1979-07-09 1981-04-01 Cie Generale De Geophysique Sa METHOD AND DEVICE FOR GEOPHYSICAL PROSPECTION WITH TRANSIENT CURRENTS
FR2475745A2 (en) * 1980-02-13 1981-08-14 Geophysique Cie Gle Geophysical prospecting using transitory currents - incorporating many repetitions of emission current of particular pulse form and particular dipole configuration

Also Published As

Publication number Publication date
FR2010981A1 (en) 1970-02-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee