{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361981469658091392.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1190/1.1440839"}},{"identifier":{"@type":"URI","@value":"https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/43/3/588/3157778/588.pdf"}}],"dc:title":[{"@value":"Mineral discrimination and removal of inductive coupling with multifrequency IP"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title>\n                  <jats:p>In-situ complex resistivity measurements over the frequency range 10 (super -2) to 10 (super +5) Hz have been made on 26 North American massive sulfide, graphite, magnetite, pyrrhotite, and porphyry copper deposits. The results reveal significant differences between the spectral responses of massive sulfides and graphite and present encouragement for their differentiation in the field. There are also differences between the spectra of magnetite and nickeliferrous pyrrhotite mineralization, which may prove useful in attempting to distinguish between these two common IP sources in nickel sulfide exploration. Lastly, there are differences in the spectra typically arising from the economic mineralization and the barren pyrite halo in porphyry copper systems. It appears that all these differences arise mainly from mineral texture, since laboratory studies of different specific mineral-electrolyte interfaces show relatively small variations.All of the in-situ spectra may be described by one or two simple Cole-Cole relaxation models. Since the frequency dependence of these models is typically only about 0.25, and the frequency dependence of inductive electromagnetic coupling is near 1.0, it is possible to recognize and to remove automatically the effects of inductive coupling from IP spectra.The spectral response of small deposits or of deeply buried deposits varies from that of the homogeneous earth response, but these variations may be readily determined from the same 'dilution factor' B 2 = (delta lnrho a )/(delta lnrho 2 ) currently used to calculate apparent IP effects.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380285711829471243","@type":"Researcher","foaf:name":[{"@value":"W. H. Pelton"}],"jpcoar:affiliationName":[{"@value":"Phoenix Geophys. Ltd., Willowdale, Ont., Canada"}]},{"@id":"https://cir.nii.ac.jp/crid/1381981469658091394","@type":"Researcher","foaf:name":[{"@value":"S. H. Ward"}]},{"@id":"https://cir.nii.ac.jp/crid/1381981469658091395","@type":"Researcher","foaf:name":[{"@value":"P. G. Hallof"}]},{"@id":"https://cir.nii.ac.jp/crid/1381981469658091393","@type":"Researcher","foaf:name":[{"@value":"W. R. Sill"}]},{"@id":"https://cir.nii.ac.jp/crid/1381981469658091396","@type":"Researcher","foaf:name":[{"@value":"P. H. Nelson"}]}],"publication":{"publicationIdentifier":[{"@type":"EISSN","@value":"19422156"},{"@type":"PISSN","@value":"00168033"}],"prism:publicationName":[{"@value":"Geophysics"}],"dc:publisher":[{"@value":"Society of Exploration Geophysicists"}],"prism:publicationDate":"1978-04-01","prism:volume":"43","prism:number":"3","prism:startingPage":"588","prism:endingPage":"609"},"reviewed":"false","url":[{"@id":"https://pubs.geoscienceworld.org/seg/geophysics/article-pdf/43/3/588/3157778/588.pdf"}],"createdAt":"2002-10-11","modifiedAt":"2025-12-10","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360572092411698816","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Rectifying characteristics of semiconductor minerals: A model on seismo-electromagnetic radiation mechanism from ore bodies"}]},{"@id":"https://cir.nii.ac.jp/crid/1360588380617670400","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Correlation between induced polarization and sulfide content of rock samples obtained from seafloor hydrothermal mounds in the Okinawa Trough, Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1360857593685957760","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Development and Application of a Variable-Frequency-Based Electric Sounding System for Increasing the Accuracy of Aquifer Detection"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206496776192","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"時間領域IP法の2.5次元モデリングとインバージョン"},{"@language":"en","@value":"2.5-D forward modeling and inversion of time domain IP method"},{"@language":"ja-Kana","@value":"ジカン リョウイキ IPホウ ノ 2.5ジゲン モデリング ト インバージョン"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001288107943040","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"海洋資源の成因の科学的研究に基づく調査海域絞込み手法の開発： 戦略的イノベーション創造プログラム（SIP）「次世代海洋資源調査技術」における 産総研地質調査総合センター（GSJ）の研究開発成果"},{"@language":"en","@value":"Scientific research on formation processes of ocean resources: GSJ’s research results of the Cross-ministerial Strategic Innovation Promotion Program (SIP), “Next-generation technology for ocean resources exploration”."},{"@language":"ja-Kana","@value":"カイヨウ シゲン ノ セイイン ノ カガクテキ ケンキュウ ニ モトズク チョウサ カイイキ シボリコミ シュホウ ノ カイハツ : センリャクテキ イノベーション ソウゾウ プログラム(SIP)「 ジセダイ カイヨウ シゲン チョウサ ギジュツ 」 ニ オケル サン ソウケン チシツ チョウサ ソウゴウ センター(GSJ)ノ ケンキュウ カイハツ セイカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681471881856","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"黄鉄鉱粒子と磁鉄鉱粒子を含む人工試料の複素比抵抗測定"},{"@language":"en","@value":"Complex resistivity measurements of artificial samples containing pyrite and magnetite particles"},{"@language":"ja-Kana","@value":"オウテッコウ リュウシ ト ジテッコウ リュウシ オ フクム ジンコウ シリョウ ノ フクソヒ テイコウ ソクテイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681473119488","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"セリサイトの複素比抵抗測定"},{"@language":"en","@value":"Complex resistivity measurements of sericite"},{"@language":"ja-Kana","@value":"セリサイト ノ フクソヒ テイコウ ソクテイ"}]},{"@id":"https://cir.nii.ac.jp/crid/2051433317003648768","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Depth profiles of resistivity and spectral IP for active modern submarine hydrothermal deposits : a case study from the Iheya North Knoll and the Iheya Minor Ridge in Okinawa Trough, Japan"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1190/1.1440839"},{"@type":"CROSSREF","@value":"10.9795/bullgsj.69.265_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.1186/s40623-017-0691-6_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.3124/segj.66.119_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.1016/j.pepi.2021.106694_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.1186/s40623-024-01998-6_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.3124/segj.67.267_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.1007/s11053-020-09791-4_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"},{"@type":"CROSSREF","@value":"10.3124/segj.70.69_references_DOI_HdRunETNuAaLslHlL2s8WaHbU6I"}]}