{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,5]],"date-time":"2022-04-05T08:57:20Z","timestamp":1649149040375},"reference-count":17,"publisher":"EDP Sciences","license":[{"start":{"date-parts":[[2019,6,7]],"date-time":"2019-06-07T00:00:00Z","timestamp":1559865600000},"content-version":"vor","delay-in-days":157,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["E3S Web Conf."],"published-print":{"date-parts":[[2019]]},"abstract":"<jats:p>Topsoils developed in different geological formations\/ages, and the top layer of the lava flow from the most recent eruption (2014\/2015) of Fogo Island (Cape Verde archipelago), were studied. The specific objectives of this work are: i) to estimate the REE contents and patterns in the whole sample of topsoils developed on different geological formations\/ages and their correlation with the iron speciation; and ii) to study the top layer of a lava flow from the most recent eruption after two years of exposure. REE contents are in general higher in the topsoils of the pre-caldera than in those developed on the post-caldera formation, particularly the light REE probably due to their incorporation into hematite. Positive Eu anomalies found in recent topsoils suggest the existence of hydrothermal processes with intrusion of hot fluids with higher concentration of Eu<jats:sup>2+<\/jats:sup>. In the top layer of the lava flow of the most recent eruption, Fe is incorporated in pyroxenes and iron oxides (magnetite and\/or maghemite). This study can be a benchmark for further knowledge of the chemical evolution and weathering rate in semi-arid climate of Fogo Island.<\/jats:p>","DOI":"10.1051\/e3sconf\/20199806009","type":"journal-article","created":{"date-parts":[[2019,6,7]],"date-time":"2019-06-07T07:49:18Z","timestamp":1559893758000},"page":"06009","source":"Crossref","is-referenced-by-count":0,"title":["Geochemistry and Fe speciation in active volcanic environments \u2013 the case of Fogo Island, Cape Verde"],"prefix":"10.1051","volume":"98","author":[{"given":"Rosa","family":"Marques","sequence":"first","affiliation":[]},{"given":"Bruno J.C.","family":"Vieira","sequence":"additional","affiliation":[]},{"given":"Maria Isabel","family":"Prud\u00eancio","sequence":"additional","affiliation":[]},{"given":"Jo\u00e3o Carlos","family":"Waerenborgh","sequence":"additional","affiliation":[]},{"given":"Maria Isabel","family":"Dias","sequence":"additional","affiliation":[]},{"given":"Dulce","family":"Russo","sequence":"additional","affiliation":[]},{"given":"Fernando","family":"Rocha","sequence":"additional","affiliation":[]},{"given":"Teresa","family":"Silva","sequence":"additional","affiliation":[]},{"given":"Francisco","family":"Ruiz","sequence":"additional","affiliation":[]}],"member":"250","published-online":{"date-parts":[[2019,6,7]]},"reference":[{"key":"R1","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1016\/j.geoderma.2005.09.003","volume":"134","author":"Doelsch","year":"2006","journal-title":"Geoderma"},{"issue":"2","key":"R2","first-page":"113","volume":"6","author":"Shoji","year":"2002","journal-title":"Global Environ. Res."},{"key":"R3","doi-asserted-by":"crossref","first-page":"538","DOI":"10.1007\/s11368-013-0814-z","volume":"14","author":"Colombo","year":"2014","journal-title":"J. Soils Sed."},{"key":"R4","doi-asserted-by":"crossref","first-page":"95","DOI":"10.1016\/j.catena.2013.09.010","volume":"113","author":"Marques","year":"2014","journal-title":"Catena"},{"key":"R5","doi-asserted-by":"crossref","first-page":"11","DOI":"10.5402\/2012\/783876","volume":"2012","author":"Aide","year":"2012","journal-title":"ISRN Soil Sci."},{"key":"R6","doi-asserted-by":"crossref","first-page":"012076","DOI":"10.1088\/1755-1315\/118\/1\/012076","volume":"118","author":"Lintjewas","year":"2018","journal-title":"IOP Conf. Ser.: Earth Environ. Sci."},{"key":"R7","doi-asserted-by":"crossref","first-page":"37","DOI":"10.1016\/j.quageo.2008.07.002","volume":"4","author":"Foenken","year":"2009","journal-title":"Quat. Geoch."},{"key":"R8","first-page":"475","volume":"2","author":"Madeira","year":"2005","journal-title":"Act. XIV Sem. Geoq. and VIII Cong. Geoq. PLP"},{"key":"R9","doi-asserted-by":"crossref","unstructured":"Le Bas T.P., Masson D.G., Holtom R.T., Springer, 337-345 (2007)","DOI":"10.1007\/978-1-4020-6512-5_35"},{"key":"R10","first-page":"597","volume":"4","author":"Machado","year":"1965","journal-title":"Garcia de Orta"},{"key":"R11","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1111\/j.1751-908X.1994.tb00502.x","volume":"18","author":"Govindaraju","year":"1994","journal-title":"Geostand. Newslett."},{"key":"R12","doi-asserted-by":"crossref","first-page":"1139","DOI":"10.1016\/j.anucene.2010.05.004","volume":"37","author":"Fernandes","year":"2010","journal-title":"Ann. Nucl. Energy"},{"key":"R13","doi-asserted-by":"crossref","first-page":"784","DOI":"10.1016\/j.jas.2009.11.008","volume":"37","author":"Dias","year":"2010","journal-title":"J. Arch. Sci."},{"key":"R14","doi-asserted-by":"crossref","first-page":"4388","DOI":"10.1016\/S0167-577X(03)00330-6","volume":"57","author":"Waerenborgh","year":"2003","journal-title":"Mater. Lett."},{"key":"R15","doi-asserted-by":"crossref","first-page":"60","DOI":"10.1016\/j.jafrearsci.2014.03.019","volume":"96","author":"Marques","year":"2014","journal-title":"J. Afr. Earth Sci"},{"key":"R16","first-page":"3623","volume":"28","author":"Liu","year":"2012","journal-title":"Acta Petrol. Sin."},{"key":"R17","doi-asserted-by":"crossref","first-page":"928","DOI":"10.1016\/j.proeps.2017.01.023","volume":"17","author":"Marques","year":"2017","journal-title":"Procedia Earth Planet. Sci."}],"container-title":["E3S Web of Conferences"],"original-title":[],"link":[{"URL":"https:\/\/www.e3s-conferences.org\/10.1051\/e3sconf\/20199806009\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,3,13]],"date-time":"2020-03-13T12:54:07Z","timestamp":1584104047000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.e3s-conferences.org\/10.1051\/e3sconf\/20199806009"}},"subtitle":[],"editor":[{"given":"O.","family":"Chudaev","sequence":"first","affiliation":[]},{"given":"Y.","family":"Kharaka","sequence":"additional","affiliation":[]},{"given":"R.","family":"Harmon","sequence":"additional","affiliation":[]},{"given":"R.","family":"Millot","sequence":"additional","affiliation":[]},{"given":"O.","family":"Shouakar-Stash","sequence":"additional","affiliation":[]}],"short-title":[],"issued":{"date-parts":[[2019]]},"references-count":17,"alternative-id":["e3sconf_wri-162018_06009"],"URL":"https:\/\/doi.org\/10.1051\/e3sconf\/20199806009","relation":{},"ISSN":["2267-1242"],"issn-type":[{"value":"2267-1242","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019]]}}}