High-Resolution Mapping Using a Sub-Audio Magnetic Survey at the Comet Gold Mine, Western Australia.
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| Title: | High-Resolution Mapping Using a Sub-Audio Magnetic Survey at the Comet Gold Mine, Western Australia. |
|---|---|
| Authors: | Chenrai, Piyaphong1,2, Meyers, Jayson2, Charusiri, Punya1 cpunya@chula.ac.th |
| Source: | Terrestrial, Atmospheric & Oceanic Sciences. Aug2011, Vol. 22 Issue 4, p393-401. 9p. |
| Subjects: | Geomagnetic maps, Gold mining, Cratons, Gold, Geology, Geological surveys, Geologic faults, Geophysics |
| Geographic Terms: | Western Australia |
| Abstract: | The Comet Gold Mine in the Murchison mineral field lies within the Yilgarn Craton of Western Australia. Gold mineralization in this area is associated with a series of north-northeasterly trending structures, and has a long exploration history with some previous geophysical information. Other exploration information, such as geology and drill hole data, are integrated with the geophysical results to study the geophysical responses and generate a geophysical interpretation map. The response from the sub-audio magnetic (SAM) survey was investigated over an area of 13 sq km. The SAM survey was completed using a transmitter current of 5 - 8 Amp with a 50% duty cycle at 4 Hz frequency, which was considered a good instrumental setting for the Comet area. SAM anomalies were compared to results obtained from other geophysical methods and then integrated with geological data to generate a geophysical interpretation map at a 1 : 5000 scale. The new interpretation of geological units and structures at the Comet area should provide a better understanding of the geological and structural setting for mineralization in the Comet area. Our results show that the Comet Fault represents a faulted limb of the Comet fold structure that has both limbs dipping to the southeast and a plunge to the northeast. Magnetic anomalies associated with sedimentary iron formation (SIF) are considered to be well correlated with some gold bearing horizons and the location of the Comet Fault, which has become more siliceous and has been altered by sulphide minerals and magnetite minerals. [ABSTRACT FROM AUTHOR] |
| Copyright of Terrestrial, Atmospheric & Oceanic Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 63618913 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: High-Resolution Mapping Using a Sub-Audio Magnetic Survey at the Comet Gold Mine, Western Australia. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Chenrai%2C+Piyaphong%22">Chenrai, Piyaphong</searchLink><relatesTo>1,2</relatesTo><br /><searchLink fieldCode="AR" term="%22Meyers%2C+Jayson%22">Meyers, Jayson</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Charusiri%2C+Punya%22">Charusiri, Punya</searchLink><relatesTo>1</relatesTo><i> cpunya@chula.ac.th</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Terrestrial%2C+Atmospheric+%26+Oceanic+Sciences%22">Terrestrial, Atmospheric & Oceanic Sciences</searchLink>. Aug2011, Vol. 22 Issue 4, p393-401. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Geomagnetic+maps%22">Geomagnetic maps</searchLink><br /><searchLink fieldCode="DE" term="%22Gold+mining%22">Gold mining</searchLink><br /><searchLink fieldCode="DE" term="%22Cratons%22">Cratons</searchLink><br /><searchLink fieldCode="DE" term="%22Gold%22">Gold</searchLink><br /><searchLink fieldCode="DE" term="%22Geology%22">Geology</searchLink><br /><searchLink fieldCode="DE" term="%22Geological+surveys%22">Geological surveys</searchLink><br /><searchLink fieldCode="DE" term="%22Geologic+faults%22">Geologic faults</searchLink><br /><searchLink fieldCode="DE" term="%22Geophysics%22">Geophysics</searchLink> – Name: SubjectGeographic Label: Geographic Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Western+Australia%22">Western Australia</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: The Comet Gold Mine in the Murchison mineral field lies within the Yilgarn Craton of Western Australia. Gold mineralization in this area is associated with a series of north-northeasterly trending structures, and has a long exploration history with some previous geophysical information. Other exploration information, such as geology and drill hole data, are integrated with the geophysical results to study the geophysical responses and generate a geophysical interpretation map. The response from the sub-audio magnetic (SAM) survey was investigated over an area of 13 sq km. The SAM survey was completed using a transmitter current of 5 - 8 Amp with a 50% duty cycle at 4 Hz frequency, which was considered a good instrumental setting for the Comet area. SAM anomalies were compared to results obtained from other geophysical methods and then integrated with geological data to generate a geophysical interpretation map at a 1 : 5000 scale. The new interpretation of geological units and structures at the Comet area should provide a better understanding of the geological and structural setting for mineralization in the Comet area. Our results show that the Comet Fault represents a faulted limb of the Comet fold structure that has both limbs dipping to the southeast and a plunge to the northeast. Magnetic anomalies associated with sedimentary iron formation (SIF) are considered to be well correlated with some gold bearing horizons and the location of the Comet Fault, which has become more siliceous and has been altered by sulphide minerals and magnetite minerals. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Terrestrial, Atmospheric & Oceanic Sciences is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.3319/TAO.2011.03.30.01(TT) Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 393 Subjects: – SubjectFull: Geomagnetic maps Type: general – SubjectFull: Gold mining Type: general – SubjectFull: Cratons Type: general – SubjectFull: Gold Type: general – SubjectFull: Geology Type: general – SubjectFull: Geological surveys Type: general – SubjectFull: Geologic faults Type: general – SubjectFull: Geophysics Type: general – SubjectFull: Western Australia Type: general Titles: – TitleFull: High-Resolution Mapping Using a Sub-Audio Magnetic Survey at the Comet Gold Mine, Western Australia. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Chenrai, Piyaphong – PersonEntity: Name: NameFull: Meyers, Jayson – PersonEntity: Name: NameFull: Charusiri, Punya IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 08 Text: Aug2011 Type: published Y: 2011 Identifiers: – Type: issn-print Value: 10170839 Numbering: – Type: volume Value: 22 – Type: issue Value: 4 Titles: – TitleFull: Terrestrial, Atmospheric & Oceanic Sciences Type: main |
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