Citation

Geoscience Australia provides most of its products for free under a Creative Commons Attribution 3.0 Australia Licence. We only require that you reference the use of our data or information using the following citation:
Daly, J., 1957. Magnetic prospecting at Tennant Creek, Northern Territory, 1935-37. Bulletin  044. Bureau of Mineral Resources, Geology and Geophysics, Canberra.

Abstract

The geophysical surveys described in this report were performed during 1935-1937 by the Aerial, Geological and Geophysical Survey of Northern Australia, but the results were not fully published at that time. As mining development has shown that the Tennant Creek Field, originally considered as a goldfield only, now has possibilities as a base metal field, it was considered desirable that the leading features of the surveys and the results thereof be presented in a unified report. The report is confined mainly to geophysical aspects and refers only to the detection of magnetic bodies. Three types of anomaly were observed, and are classified as minor, major and regional. The minor anomalies appear to be of little significance, and the surveyed areas were not large enough to completely delineate the regional anomalies, which are almost certainly associated with the regional geology. The major-type anomalies are well suited to interpretation by theoretical methods. A method of interpretation based on polarization by induction has been applied to these anomalies, and testing performed to date indicates that this method shows the position of the body causing an anomaly with sufficient -accuracy for the siting of an exploratory drill hole. In general, a reasonable estimate can be made also of the extent in depth of the body. More complete evaluation of the magnetic results would 'be assisted by accurate delineation and interpretation of the regional anomalies. An airborne magnetometer survey, with this object in view, has recently been completed by the Bureau and should give valuable information on the structure and limits of the field. Illustrations are presented showing contour maps of most of the major anomalies, and, for the most important areas, observed magnetic profiles are shown alongside profiles based on theoretically determined dimensions of the bodies causing the anomalies. Four appendices give details of the mathematics involved in the method of interpretation which has been adopted.
Google map showing geographic bounding box with values North bound -19.0 East bound 134.5 West bound 133.5 South bound -20.0
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dataset - GA Publication - Bulletin

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Creative Commons Attribution 3.0 Australia Licence

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Commonwealth of Australia (Geoscience Australia)

Author(s)

Date (publication)

1957

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dataset

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geoscientificInformation

Keywords

GA Publication
Bulletin
magnetics
Earth Sciences

Resource Language

English

Resource Character Set

utf8

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unclassified

Geographic Extent

North bound
-19.0
East bound
134.5
West bound
133.5
South bound
-20.0

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Unknown

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onLine

DISTRIBUTION Format

pdf

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Organisation Name
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Metadata File Identifier

a05f7892-9d11-7506-e044-00144fdd4fa6

Metadata Standard Name

ANZLIC Metadata Profile: An Australian/New Zealand Profile of AS/NZS ISO 19115:2005, Geographic information - Metadata

Metadata Standard Version

1.1

Metadata Date Stamp

2014-02-14

METADATA SECURITY CLASSIFICATION

unclassified

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Organisation Name
Geoscience Australia
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Canberra
Administrative Area
ACT
Postal Code
2601
Country
Australia
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Downloads
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1800 800 173 (within Australia);
 
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