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Article: Abundances of radioelements (K, U, Th) in weathered igneous rocks in Hong Kong

TitleAbundances of radioelements (K, U, Th) in weathered igneous rocks in Hong Kong
Authors
KeywordsGamma-Ray Spectrometry
Hong Kong
Radioelements
Radiometry
Saprolites
Weathered Igneous Rock
Issue Date2007
PublisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/jge
Citation
Journal Of Geophysics And Engineering, 2007, v. 4 n. 3, p. 285-292 How to Cite?
AbstractGamma-ray spectrometric measurements and geochemical determinations of major and trace element contents using ICP-MS and XRF were conducted on 58 igneous rock samples from Hong Kong. Stripping analyses on the gamma-ray spectra have yielded estimates on the abundance of K, Th and U. Major element contents were used to compute the Parker weathering indices for the samples. Only K shows a systematic variation in concentration with an increasing degree of weathering. The increase in porosity and interconnectivity of microfractures are probably the cause for the observed nonlinear decline in the K content during the weathering process. The concentrations of U and Th in the samples do not show any systematic variations with the weathering index, reflecting the complex mechanisms of dissolution and deposition of the two radioelements in the weathering profile. A curvilinear relationship between eK and W p has been derived from the measurement data, which possibly provides a quick means of characterizing the extent of alteration in the igneous rocks. © 2007 Nanjing Institute of Geophysical Prospecting.
Persistent Identifierhttp://hdl.handle.net/10722/151218
ISSN
2015 Impact Factor: 0.736
2015 SCImago Journal Rankings: 0.538
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChan, LSen_US
dc.contributor.authorWong, PWen_US
dc.contributor.authorChen, QFen_US
dc.date.accessioned2012-06-26T06:18:50Z-
dc.date.available2012-06-26T06:18:50Z-
dc.date.issued2007en_US
dc.identifier.citationJournal Of Geophysics And Engineering, 2007, v. 4 n. 3, p. 285-292en_US
dc.identifier.issn1742-2132en_US
dc.identifier.urihttp://hdl.handle.net/10722/151218-
dc.description.abstractGamma-ray spectrometric measurements and geochemical determinations of major and trace element contents using ICP-MS and XRF were conducted on 58 igneous rock samples from Hong Kong. Stripping analyses on the gamma-ray spectra have yielded estimates on the abundance of K, Th and U. Major element contents were used to compute the Parker weathering indices for the samples. Only K shows a systematic variation in concentration with an increasing degree of weathering. The increase in porosity and interconnectivity of microfractures are probably the cause for the observed nonlinear decline in the K content during the weathering process. The concentrations of U and Th in the samples do not show any systematic variations with the weathering index, reflecting the complex mechanisms of dissolution and deposition of the two radioelements in the weathering profile. A curvilinear relationship between eK and W p has been derived from the measurement data, which possibly provides a quick means of characterizing the extent of alteration in the igneous rocks. © 2007 Nanjing Institute of Geophysical Prospecting.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing. The Journal's web site is located at http://www.iop.org/EJ/journal/jgeen_US
dc.relation.ispartofJournal of Geophysics and Engineeringen_US
dc.subjectGamma-Ray Spectrometryen_US
dc.subjectHong Kongen_US
dc.subjectRadioelementsen_US
dc.subjectRadiometryen_US
dc.subjectSaprolitesen_US
dc.subjectWeathered Igneous Rocken_US
dc.titleAbundances of radioelements (K, U, Th) in weathered igneous rocks in Hong Kongen_US
dc.typeArticleen_US
dc.identifier.emailChan, LS:chanls@hku.hken_US
dc.identifier.authorityChan, LS=rp00665en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1088/1742-2132/4/3/S07en_US
dc.identifier.scopuseid_2-s2.0-34548534681en_US
dc.identifier.hkuros134777-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34548534681&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume4en_US
dc.identifier.issue3en_US
dc.identifier.spage285en_US
dc.identifier.epage292en_US
dc.identifier.isiWOS:000249222300007-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridChan, LS=7403540528en_US
dc.identifier.scopusauthoridWong, PW=24832352400en_US
dc.identifier.scopusauthoridChen, QF=7406333920en_US
dc.identifier.citeulike1614108-

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