{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T18:36:22Z","timestamp":1770143782009,"version":"3.49.0"},"reference-count":19,"publisher":"American Geophysical Union (AGU)","issue":"21","license":[{"start":{"date-parts":[[2006,11,1]],"date-time":"2006-11-01T00:00:00Z","timestamp":1162339200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Geophysical Research Letters"],"published-print":{"date-parts":[[2006,11]]},"abstract":"<jats:p>When a paleomagnetic pole is sought for in an igneous body, the host rocks should be subjected to a contact test to assure that the determined paleopole has the age of the intrusion. If the contact test is positive, it precludes the possibility that the measured magnetization is a later effect. Therefore, we investigated the variations of the remanent magnetization along cross\u2010sections of rocks hosting the Foum Zguid dyke (southern Morocco) and the dyke itself. A positive contact test was obtained, but it is mainly related with Chemical\/Crystalline Remanent Magnetization due to metasomatic processes in the host\u2010rocks during magma intrusion and cooling, and not only with Thermo\u2010Remanent Magnetization as ordinarily assumed in standard studies. Paleomagnetic data obtained within the dyke then reflect the Earth magnetic field during emplacement of this well\u2010dated (196.9 \u00b1 1.8 Ma) intrusion.<\/jats:p>","DOI":"10.1029\/2006gl027498","type":"journal-article","created":{"date-parts":[[2006,11,1]],"date-time":"2006-11-01T04:00:24Z","timestamp":1162353624000},"source":"Crossref","is-referenced-by-count":13,"title":["Paleomagnetic study of the Great Foum Zguid dyke (southern Morocco): A positive contact test related to metasomatic processes"],"prefix":"10.1029","volume":"33","author":[{"given":"P. F.","family":"Silva","sequence":"first","affiliation":[{"name":"Departamento de Engenharia Civil Instituto Superior Engenharia Lisboa  Lisbon Portugal"},{"name":"Instituto Dom Luiz Universidade de Lisboa  Lisbon Portugal"}]},{"given":"B.","family":"Henry","sequence":"additional","affiliation":[{"name":"Laboratoire de Paleomagnetism Institut de Physique du Globe de Paris, Centre National de la Recherche Scientifique  Saint\u2010Maur France"}]},{"given":"F. O.","family":"Marques","sequence":"additional","affiliation":[{"name":"Instituto Dom Luiz Universidade de Lisboa  Lisbon Portugal"}]},{"given":"P.","family":"Madureira","sequence":"additional","affiliation":[{"name":"Centro de Geof\u00edsica Universidade de \u00c9vora  \u00c9vora Portugal"}]},{"given":"J. M.","family":"Miranda","sequence":"additional","affiliation":[{"name":"Instituto Dom Luiz Universidade de Lisboa  Lisbon Portugal"}]}],"member":"13","published-online":{"date-parts":[[2006,11]]},"reference":[{"key":"e_1_2_5_2_1","first-page":"209","article-title":"Un exemple de diff\u00e9renciation transverse: le Grand Dyke de Foum Zguid (Anti\u2010Atlas, Maroc)","volume":"319","author":"Aarab E. M.","year":"1994","journal-title":"C.R. Acad. Sci. Paris, Ser. II"},{"key":"e_1_2_5_3_1","doi-asserted-by":"publisher","DOI":"10.1029\/2000JB000050"},{"key":"e_1_2_5_4_1","first-page":"53","article-title":"Juxtaposed and superimposed magnetizations in Carboniferous formations of the Tindouf basin","volume":"14","author":"Bouabdallah H.","year":"2003","journal-title":"Bull. Serv. Geol. 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