{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T20:51:40Z","timestamp":1776977500342,"version":"3.51.4"},"reference-count":99,"publisher":"American Geophysical Union (AGU)","issue":"2","license":[{"start":{"date-parts":[[2015,2,17]],"date-time":"2015-02-17T00:00:00Z","timestamp":1424131200000},"content-version":"vor","delay-in-days":16,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"REGENA","award":["PTDC \/GEO-FIQ\/3648\/2012"],"award-info":[{"award-number":["PTDC \/GEO-FIQ\/3648\/2012"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JGR Solid Earth"],"published-print":{"date-parts":[[2015,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>The localization of magma melting areas at the lithosphere bottom in extensional volcanic domains is poorly understood. Large polygenetic volcanoes of long duration and their associated magma chambers suggest that melting at depth may be focused at specific points within the mantle. To validate the hypothesis that the magma feeding a mafic crust, comes from permanent localized crustal reservoirs, it is necessary to map the fossilized magma flow within the crustal planar intrusions. Using the AMS, we obtain magmatic flow vectors from 34 alkaline basaltic dykes from S\u00e3o Jorge, S\u00e3o Miguel and Santa Maria islands in the Azores Archipelago, a hot\u2010spot related triple junction. The dykes contain titanomagnetite showing a wide spectrum of solid solution ranging from Ti\u2010rich to Ti\u2010poor compositions with vestiges of maghemitization. Most of the dykes exhibit a normal magnetic fabric. The orientation of the magnetic lineation <jats:italic>k<\/jats:italic><jats:sub>1<\/jats:sub> axis is more variable than that of the <jats:italic>k<\/jats:italic>3 axis, which is generally well grouped. The dykes of S\u00e3o Jorge and S\u00e3o Miguel show a predominance of subhorizontal magmatic flows. In Santa Maria the deduced flow pattern is less systematic changing from subhorizontal in the southern part of the island to oblique in north. These results suggest that the ascent of magma beneath the islands of Azores is predominantly over localized melting sources and then collected within shallow magma chambers. According to this concept, dykes in the upper levels of the crust propagate laterally away from these magma chambers thus feeding the lava flows observed at the surface.<\/jats:p>","DOI":"10.1002\/2014jb010982","type":"journal-article","created":{"date-parts":[[2014,12,9]],"date-time":"2014-12-09T02:36:32Z","timestamp":1418092592000},"page":"662-690","source":"Crossref","is-referenced-by-count":13,"title":["Magma flow pattern in dykes of the Azores revealed by anisotropy of magnetic susceptibility"],"prefix":"10.1029","volume":"120","author":[{"given":"M. A.","family":"Moreira","sequence":"first","affiliation":[{"name":"Instituto Superior de Engenharia de Lisboa  Lisboa Portugal"},{"name":"Instituto Dom Lu\u00eds  Lisboa Portugal"}]},{"given":"L.","family":"Geoffroy","sequence":"additional","affiliation":[{"name":"Laboratoire Domaines Oc\u00e9aniques, CNRS (UMR 6538) Institut Universitaire Europ\u00e9en de la Mer, Universit\u00e9 de Brest  Plouzan\u00e9 France"}]},{"given":"J. P.","family":"Pozzi","sequence":"additional","affiliation":[{"name":"Laboratoire de G\u00e9ologie CNRS (UMR 8538), \u00c9cole Normale Sup\u00e9rieure  Paris France"}]}],"member":"13","published-online":{"date-parts":[[2015,2,17]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/0024-4937(75)90008-0"},{"key":"e_1_2_8_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/0191-8141(96)00011-9"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature01429"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1474-7065(02)00113-4"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvolgeores.2007.10.013"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1029\/JB084iB06p03029"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.250.4977.107"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(88)90279-X"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(88)90031-5"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1093\/petrology\/egn083"},{"key":"e_1_2_8_12_1","first-page":"238","volume-title":"Paleomagnetism: Magnetic Domains to Geologic Terranes","author":"Butler R.","year":"1992"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-246X.2004.02426.x"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-1951(03)00096-9"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-1951(01)00060-9"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1016\/0031-9201(95)03072-7"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tecto.2008.09.005"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1029\/JB093iB05p04182"},{"key":"e_1_2_8_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0191-8141(01)00007-4"},{"key":"e_1_2_8_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/0031-9201(77)90108-x"},{"key":"e_1_2_8_21_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.265.5179.1677"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-246X.1990.tb06579.x"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012-821X(99)00109-0"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-3121.2003.00494.x"},{"key":"e_1_2_8_25_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-246X.1997.tb04083.x"},{"key":"e_1_2_8_26_1","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9780511612794"},{"key":"e_1_2_8_27_1","first-page":"411","article-title":"Caract\u00e9ristiques morphologiques des segments axiaux le long de la dorsale M\u00e9dio\u2010Atlantique (20\u00b0N\u201324\u00b0N)","volume":"320","author":"Durand C.","year":"1995","journal-title":"C.R. Acad. Sci. Paris"},{"key":"e_1_2_8_28_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(78)90182-6"},{"key":"e_1_2_8_29_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsg.2003.12.003"},{"key":"e_1_2_8_30_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(80)90013-8"},{"key":"e_1_2_8_31_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF02600570"},{"key":"e_1_2_8_32_1","doi-asserted-by":"publisher","DOI":"10.1029\/2001GL014367"},{"key":"e_1_2_8_33_1","unstructured":"V. H. Forjaz 1980"},{"key":"e_1_2_8_34_1","article-title":"Axial magnetic anomaly segmentation along the East\u2010Greenland volcanic passive margin compared to magnetic segmentation of the Mid\u2010 Atlantic Ridge: A similar origin?","volume":"7","author":"Gac S.","year":"2005","journal-title":"Geophys. Res. Abstr."},{"key":"e_1_2_8_35_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tecto.2005.12.010"},{"key":"e_1_2_8_36_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(94)00233-O"},{"key":"e_1_2_8_37_1","doi-asserted-by":"publisher","DOI":"10.1029\/2003GC000527"},{"issue":"4","key":"e_1_2_8_38_1","first-page":"8050","article-title":"Diapirism and intraplate extension: Cause or consequence?","volume":"326","author":"Geoffroy L.","year":"1998","journal-title":"C. R. Acad. Sci., Ser. IIa: Sci. Terre Planets"},{"key":"e_1_2_8_39_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.crte.2005.10.006"},{"key":"e_1_2_8_40_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-3121.2002.00412.x"},{"key":"e_1_2_8_41_1","doi-asserted-by":"publisher","DOI":"10.1130\/2007.2430(34)"},{"key":"e_1_2_8_42_1","first-page":"1257","article-title":"Magnetic anisotropy, an unexploited petrofabric element","volume":"65","author":"Graham J. W.","year":"1954","journal-title":"Bull. Geol. Soc. Am."},{"key":"e_1_2_8_43_1","doi-asserted-by":"publisher","DOI":"10.1029\/JB091iB02p02029"},{"key":"e_1_2_8_44_1","doi-asserted-by":"publisher","DOI":"10.1029\/JB074i022p05277"},{"key":"e_1_2_8_45_1","doi-asserted-by":"publisher","DOI":"10.1029\/JB091iB12p12711"},{"key":"e_1_2_8_46_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(90)90073-H"},{"key":"e_1_2_8_47_1","doi-asserted-by":"publisher","DOI":"10.1029\/91GL01777"},{"key":"e_1_2_8_48_1","first-page":"1037","article-title":"Application de l'extension bivariate de la statistique de Fisher aux donn\u00e9es d'anisotropie de susceptibilit\u00e9 magn\u00e9tique: Int\u00e9gration des incertitudes de mesure sur l'orientation des directions principales","volume":"320","author":"Henry B.","year":"1995","journal-title":"C. R. Acad. Sci. Paris"},{"key":"e_1_2_8_49_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.epsl.2008.06.041"},{"key":"e_1_2_8_50_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvolgeores.2012.06.019"},{"key":"e_1_2_8_51_1","doi-asserted-by":"publisher","DOI":"10.1029\/GL007i007p00501"},{"key":"e_1_2_8_52_1","doi-asserted-by":"publisher","DOI":"10.1029\/93JB00373"},{"key":"e_1_2_8_53_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01450244"},{"key":"e_1_2_8_54_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1365-246X.2002.01731.x"},{"key":"e_1_2_8_55_1","doi-asserted-by":"publisher","DOI":"10.1016\/0191-8141(92)90146-N"},{"key":"e_1_2_8_56_1","doi-asserted-by":"publisher","DOI":"10.1098\/rspa.1922.0078"},{"key":"e_1_2_8_57_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01613632"},{"key":"e_1_2_8_58_1","doi-asserted-by":"publisher","DOI":"10.1016\/0040-1951(81)90110-4"},{"key":"e_1_2_8_59_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012-821X(98)00117-4"},{"key":"e_1_2_8_60_1","doi-asserted-by":"publisher","DOI":"10.1029\/JZ067i007p02873"},{"key":"e_1_2_8_61_1","doi-asserted-by":"publisher","DOI":"10.1029\/JB093iB05p04301"},{"key":"e_1_2_8_62_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-1951(96)00091-1"},{"key":"e_1_2_8_63_1","doi-asserted-by":"publisher","DOI":"10.1038\/344627a0"},{"key":"e_1_2_8_64_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1004505401547"},{"key":"e_1_2_8_65_1","doi-asserted-by":"publisher","DOI":"10.1029\/2007JB005573"},{"key":"e_1_2_8_66_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvolgeores.2006.03.010"},{"key":"e_1_2_8_67_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1004698526004"},{"key":"e_1_2_8_68_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(94)90231-3"},{"key":"e_1_2_8_69_1","doi-asserted-by":"publisher","DOI":"10.1038\/335217a0"},{"issue":"5","key":"e_1_2_8_70_1","first-page":"733","article-title":"Active tectonics and first paleoseismological results in Faial, Pico and S. Jorge Islands (Azores, Portugal)","volume":"46","author":"Madeira J.","year":"2003","journal-title":"Ann. Geophys."},{"issue":"1","key":"e_1_2_8_71_1","first-page":"189","article-title":"Radioacarbon ages of recent volcanic events from the Island of S Jorge Azores","volume":"84","author":"Madeira J.","year":"1998","journal-title":"Com. Inst. Geol. Min."},{"key":"e_1_2_8_72_1","doi-asserted-by":"publisher","DOI":"10.1038\/224125a0"},{"key":"e_1_2_8_73_1","doi-asserted-by":"publisher","DOI":"10.1023\/A:1004622825210"},{"key":"e_1_2_8_74_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012-821X(99)00071-0"},{"key":"e_1_2_8_75_1","doi-asserted-by":"publisher","DOI":"10.1016\/S1251-8050(99)80222-5"},{"key":"e_1_2_8_76_1","doi-asserted-by":"publisher","DOI":"10.1016\/0031-9201(87)90181-6"},{"key":"e_1_2_8_77_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jsg.2007.06.001"},{"key":"e_1_2_8_78_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00445-013-0753-y"},{"key":"e_1_2_8_79_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvolgeores.2006.11.006"},{"key":"e_1_2_8_80_1","doi-asserted-by":"publisher","DOI":"10.1029\/GL015i010p01097"},{"key":"e_1_2_8_81_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0040-1951(99)00127-4"},{"key":"e_1_2_8_82_1","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-011-3358-6_5"},{"key":"e_1_2_8_83_1","doi-asserted-by":"publisher","DOI":"10.1029\/92RG00733"},{"key":"e_1_2_8_84_1","doi-asserted-by":"publisher","DOI":"10.1038\/nature01172"},{"key":"e_1_2_8_85_1","doi-asserted-by":"publisher","DOI":"10.1016\/0012-821X(80)90221-6"},{"issue":"4","key":"e_1_2_8_86_1","first-page":"575","article-title":"Stratigraphy and geochronology of Santa Maria Island (Azores)","volume":"7","author":"Serralheiro A.","year":"1993","journal-title":"A\u00e7oreana"},{"key":"e_1_2_8_87_1","unstructured":"Serralheiro A. C. A. M.Alves V. H.Forjaz andB.Rodrigues(1987) Carta vulcanol\u00f3gica dos A\u00e7ores: Ilha de Santa Maria.Edi\u00e7\u00e3o do Serv. Reg. Protec\u00e7\u00e3o Civil (Regi\u00e3o Aut\u00f3noma dos A\u00e7ores) Ponta Delgada 1\u00aa ed. 2 folhas."},{"key":"e_1_2_8_88_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1365-246X.2011.05320.x"},{"key":"e_1_2_8_89_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tecto.2014.04.017"},{"key":"e_1_2_8_90_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvolgeores.2006.03.022"},{"key":"e_1_2_8_91_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jvolgeores.2008.01.007"},{"key":"e_1_2_8_92_1","doi-asserted-by":"publisher","DOI":"10.1029\/JZ065i008p02429"},{"key":"e_1_2_8_93_1","doi-asserted-by":"publisher","DOI":"10.1016\/0031-9201(89)90056-3"},{"key":"e_1_2_8_94_1","first-page":"217","volume-title":"The Magnetic Anisotropy of Rocks","author":"Tarling D. H.","year":"1993"},{"key":"e_1_2_8_95_1","volume-title":"Essentials of Paleomagnetism","author":"Tauxe L","year":"2012"},{"key":"e_1_2_8_96_1","doi-asserted-by":"publisher","DOI":"10.1126\/science.262.5134.726"},{"key":"e_1_2_8_97_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0012-821X(02)00538-1"},{"key":"e_1_2_8_98_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0009-2541(02)00264-4"},{"key":"e_1_2_8_99_1","doi-asserted-by":"publisher","DOI":"10.1038\/ngeo1428"},{"key":"e_1_2_8_100_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.epsl.2006.07.031"}],"container-title":["Journal of Geophysical Research: Solid Earth"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2F2014JB010982","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.wiley.com\/onlinelibrary\/tdm\/v1\/articles\/10.1002%2F2014JB010982","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/2014JB010982","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/2014JB010982","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/agupubs.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/2014JB010982","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,10]],"date-time":"2023-09-10T05:34:30Z","timestamp":1694324070000},"score":1,"resource":{"primary":{"URL":"https:\/\/agupubs.onlinelibrary.wiley.com\/doi\/10.1002\/2014JB010982"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,2]]},"references-count":99,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2015,2]]}},"alternative-id":["10.1002\/2014JB010982"],"URL":"https:\/\/doi.org\/10.1002\/2014jb010982","archive":["Portico"],"relation":{},"ISSN":["2169-9313","2169-9356"],"issn-type":[{"value":"2169-9313","type":"print"},{"value":"2169-9356","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,2]]}}}