{"refrec":{"BRefID":16220,"RR":"<b>Varekamp, J.C.; van Bergen, M.J.; Vroon, P.Z.; Poorter, R.P.E.; Wirakusumah, A.D.; Erfan, R.D.; Suharyono, K.; Sriwana, T.</b> (1989). Volcanism and tectonics in the eastern Sunda Arc, Indonesia. <i>Neth. J. Sea Res. 24(2-3)</i>: 303-312","BEntID":16220,"PublicFlag":1,"CheckedFlag":0,"wosflag":0,"vabbflag":0,"RefStringPartII":". <i>Neth. J. Sea Res. 24(2-3)</i>: 303-312","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Varekamp, J.C.; van Bergen, M.J.; Vroon, P.Z.; Poorter, R.P.E.; Wirakusumah, A.D.; Erfan, R.D.; Suharyono, K.; Sriwana, T.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Varekamp, J.C. <i>et al.</i>","Englishabstract":"The Indonesian volcanic arc consists of four segments which can be recognized in the Sr isotopic signatures of their arc volcanics and by the nature of the material subducted below them. We present data from the east Sunda Arc with the volcanoes Sirung, Lewotolo, Boleng and Batu Tara, which span the compositional spectrum from arctholeiitic to high-potassium undersaturated volcanics. The studied volcanoes show typical arc trace-element patterns with high Sr and Pb isotopic signatures. These volcanics show characteristics that are transitional between the Western Banda Arc volcanics and the Bali-lombok segment further west. The variations along the arc are interpreted as a result of increasing contributions of subducted crustal/sedimentary material towards the zone of collision between the Australian continental margin and the Banda Arc. Chemical and isotopic variations in the studied segment suggest decreasing contributions of subducted material at greater depths in the Benioff zone, and the presence of an enriched mantle domain below the potassium-rich volcano Batu Tara. We speculate that zones with cross-arc tectonic disturbances are conducive to sediment subduction.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Volcanism and tectonics in the eastern Sunda Arc, Indonesia","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":null,"OtherDescriptors":null,"Notes":null,"AnaPub":1989,"MonPub":null,"DateUpdate":"2019-07-10","DateCreate":"2001-08-21","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1989CK14200017","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":16220,"PubliDate":1989,"Pagination":"303-312","XtraPublOfAnaID":null,"ISBN":null,"Volume":"24","Issue":"2-3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":44573,"SerRR":"Netherlands Journal of Sea Research. 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