{"refrec":{"BRefID":77134,"RR":"<b>Alvarez, R.; De Carlo, E.H.; Cowen, J.; Andermann, G.</b> (1990). Micromorphological characteristics of a marine ferromanganese crust. <i>Mar. Geol. 94(3)</i>: 239-249","BEntID":72733,"PublicFlag":1,"CheckedFlag":0,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Mar. Geol. 94(3)</i>: 239-249","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Alvarez, R.; De Carlo, E.H.; Cowen, J.; Andermann, G.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Alvarez, R. <i>et al.</i>","Englishabstract":"Marine ferromanganese oxide crust fragments sampled from a massive equatorial Pacific Ocean crust deposit exhibit distinct micromorphological features and a microchemical distribution which have not been previous reported. Black, shiny upper layers of the crust display a prismoidal microstructure and a unique crystallite habit expressed by a mosaic-like design of hexagonal and pentagonal columns. This columnar arrangement, which has been previously reported on a scale of a few millimeters in other marine Fe-Mn deposits, extends vertically for several centimeters and is observed throughout the entire horizontal plane of growth of the crust, and is the largest scale of morphological regularity observed in marine Fe-Mn deposits to date. The polygonal columnar structures which constitute the crust are mainly composed of Mn, Fe, and Ti oxides. Aluminium- and Si-rich intercolumnar space (lamellae) surrounds individual columns and sharply defines each polyhedron.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Micromorphological characteristics of a marine ferromanganese crust","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":1990,"MonPub":null,"DateUpdate":"2005-10-10","DateCreate":"2005-10-10","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:A1990DY76400003","VABBcode":null,"OpenAcc":0},"refs":null,"anarec":{"AnaID":77134,"PubliDate":1990,"Pagination":"239-249","XtraPublOfAnaID":null,"ISBN":null,"Volume":"94","Issue":"3","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":43365,"SerRR":"Marine Geology. Elsevier: Amsterdam.  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