File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Platinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic origin

TitlePlatinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic origin
Authors
KeywordsCosmic body
Peat layer
Platinum group elements (PGEs)
Tunguska event
Issue Date2004
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/pss
Citation
Planetary And Space Science, 2004, v. 52 n. 4, p. 331-340 How to Cite?
AbstractWe have measured excesses of Pd, Rh, Ru, REE, Co, Sr, and Y in a peat column from the Northern peat bog of the 1908 Tunguska explosion site. Earlier, in this peat column the presence of an Ir anomaly at the event layers (30-45 cm depth) has been found (Planet Space Sci. 48 (1998) 179). In these layers, Pd, Rh, Ru, Co, Sr, and Y show pronounced anomalies of a factor 4-7 higher than the background value. In the event layers there are also good correlations between the siderophile platinum group elements (Pd, Rh, Ru) and Co, indicators of cosmic material, which imply they might have the same source, i.e. the Tunguska explosive body. The patterns of CI-chondrite-normalized REE in the event layers are much flatter than those in normal peat layers and different from those in the nearby traps. Furthermore, in these layers the patterns of CI-chondrite-normalized PGEs and the element ratios (e.g. C/Pd, C/Rh, and between some siderophile elements) give evidence that the Tunguska explosive body was more likely a comet, although we cannot exclude the possibility that the impactor could be a carbonaceous asteroid. We have estimated the total mass of a solid component of the explosive body up to 103-106 tons. © 2003 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/72413
ISSN
2015 Impact Factor: 1.942
2015 SCImago Journal Rankings: 1.072
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHou, QLen_HK
dc.contributor.authorKolesnikov, EMen_HK
dc.contributor.authorXie, LWen_HK
dc.contributor.authorKolesnikova, NVen_HK
dc.contributor.authorZhou, MFen_HK
dc.contributor.authorSun, Men_HK
dc.date.accessioned2010-09-06T06:41:33Z-
dc.date.available2010-09-06T06:41:33Z-
dc.date.issued2004en_HK
dc.identifier.citationPlanetary And Space Science, 2004, v. 52 n. 4, p. 331-340en_HK
dc.identifier.issn0032-0633en_HK
dc.identifier.urihttp://hdl.handle.net/10722/72413-
dc.description.abstractWe have measured excesses of Pd, Rh, Ru, REE, Co, Sr, and Y in a peat column from the Northern peat bog of the 1908 Tunguska explosion site. Earlier, in this peat column the presence of an Ir anomaly at the event layers (30-45 cm depth) has been found (Planet Space Sci. 48 (1998) 179). In these layers, Pd, Rh, Ru, Co, Sr, and Y show pronounced anomalies of a factor 4-7 higher than the background value. In the event layers there are also good correlations between the siderophile platinum group elements (Pd, Rh, Ru) and Co, indicators of cosmic material, which imply they might have the same source, i.e. the Tunguska explosive body. The patterns of CI-chondrite-normalized REE in the event layers are much flatter than those in normal peat layers and different from those in the nearby traps. Furthermore, in these layers the patterns of CI-chondrite-normalized PGEs and the element ratios (e.g. C/Pd, C/Rh, and between some siderophile elements) give evidence that the Tunguska explosive body was more likely a comet, although we cannot exclude the possibility that the impactor could be a carbonaceous asteroid. We have estimated the total mass of a solid component of the explosive body up to 103-106 tons. © 2003 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/pssen_HK
dc.relation.ispartofPlanetary and Space Scienceen_HK
dc.subjectCosmic bodyen_HK
dc.subjectPeat layeren_HK
dc.subjectPlatinum group elements (PGEs)en_HK
dc.subjectTunguska eventen_HK
dc.titlePlatinum group element abundances in a peat layer associated with the Tunguska event, further evidence for a cosmic originen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0032-0633&volume=52&spage=331&epage=340&date=2004&atitle=Platinum+group+element+abundances+in+a+peat+layer+associated+with+the+Tunguska+event,+further+evidence+for+a+cosmic+originen_HK
dc.identifier.emailZhou, MF:mfzhou@hkucc.hku.hken_HK
dc.identifier.emailSun, M:minsun@hku.hken_HK
dc.identifier.authorityZhou, MF=rp00844en_HK
dc.identifier.authoritySun, M=rp00780en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.pss.2003.08.002en_HK
dc.identifier.scopuseid_2-s2.0-1042288979en_HK
dc.identifier.hkuros109842en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-1042288979&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume52en_HK
dc.identifier.issue4en_HK
dc.identifier.spage331en_HK
dc.identifier.epage340en_HK
dc.identifier.isiWOS:000189385400008-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHou, QL=7005883718en_HK
dc.identifier.scopusauthoridKolesnikov, EM=7005694781en_HK
dc.identifier.scopusauthoridXie, LW=8523115400en_HK
dc.identifier.scopusauthoridKolesnikova, NV=7005912139en_HK
dc.identifier.scopusauthoridZhou, MF=7403506005en_HK
dc.identifier.scopusauthoridSun, M=25932315800en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats