{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,4]],"date-time":"2026-02-04T00:11:31Z","timestamp":1770163891719,"version":"3.49.0"},"reference-count":135,"publisher":"Edicions de la Universitat de Barcelona","license":[{"start":{"date-parts":[[2017,10,23]],"date-time":"2017-10-23T00:00:00Z","timestamp":1508716800000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-sa\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["GeA"],"abstract":"<jats:p>The North African section of the Gondwana margin was the site of voluminous, arc-related magmatism during\u00a0the Late Neoproterozoic (Avalonian\u2013Cadomian orogen). The lower (and older) metasedimentary sequence\u00a0that constitutes the Basal Units of the Allochthonous Complexes of NW Iberia was deposited in that setting. In\u00a0these units, sedimentation was followed by the intrusion of tonalites and granodiorites in the late Cambrian (ca.\u00a0493\u2013489Ma). In the Late Paleozoic, the collision of Gondwana and Laurussia (Variscan orogeny) deformed and\u00a0metamorphosed the whole ensemble.New whole rock geochemical analysis performed in seven samples of metatonalites and fourteen samples of\u00a0metagranodiorites are characterized by: i) slight enrichment in incompatible elements (Rb, Ba, Th, U), ii) negative\u00a0anomalies in Nb, Ta, P, and Ti, and iii) negative anomalies in Eu. These chemical features are in agreement\u00a0with a subduction-related setting for the genesis of both types of magma, which is also supported by chemical\u00a0discrimination using tectonic setting diagrams. Positive anomalies of Pb suggest a crustal component. The new\u00a0geochemical data reveal that the convergent orogen that ruled the paleogeography of the Gondwana periphery\u00a0during the Neoproterozoic (Cadomian orogen) remained active beyond the Neoproterozoic-Cambrian transition,\u00a0up to at least late Cambrian times.<\/jats:p>","DOI":"10.1344\/geologicaacta2017.15.4.4","type":"journal-article","created":{"date-parts":[[2026,2,3]],"date-time":"2026-02-03T09:48:29Z","timestamp":1770112109000},"page":"305-321","source":"Crossref","is-referenced-by-count":0,"title":["Late Cambrian magmatic arc activity in peri-Gondwana: geochemical evidence from the Basal Allochthonous Units of NW Iberia"],"prefix":"10.1344","author":[{"given":"P.","family":"ANDONAEGUI","sequence":"first","affiliation":[]},{"given":"J.","family":"ABATI","sequence":"additional","affiliation":[]},{"given":"R.","family":"D\u00cdEZ FERN\u00c1NDEZ","sequence":"additional","affiliation":[]}],"member":"17854","published-online":{"date-parts":[[2017,10,23]]},"reference":[{"key":"280073","doi-asserted-by":"crossref","unstructured":"Abati, J., Dunning, G.R., Arenas, R., D\u00edaz Garc\u00eda, F., Gonz\u00e1lez Cuadra, P., Mart\u00ednez Catal\u00e1n, J.R., Andonaegui, P., 1999. Early Ordovician orogenic event in Galicia (NW Spain): evidence from U-Pb ages in the uppermost unit of the \u00d3rdenes Complex. Earth and Planetary Science Letters, 165, 213-228.","DOI":"10.1016\/S0012-821X(98)00268-4"},{"key":"280074","doi-asserted-by":"crossref","unstructured":"Abati, J., Gerdes, A., Fern\u00e1ndez-Su\u00e1rez, J., Arenas, R., Whitehouse, M.J., D\u00edez Fern\u00e1ndez, R., 2010. Magmatism and early-Variscan continental subduction in the northern Gondwana margin recorded in zircons from the basal units of Galicia, NW Spain. Geological Society of America Bulletin, 122, 219-235, DOI: 10.1130\/B26572.1.","DOI":"10.1130\/B26572.1"},{"key":"280075","doi-asserted-by":"crossref","unstructured":"Albert, R., Arenas, R., Gerdes, A., S\u00e1nchez Mart\u00ednez, S., Fern\u00e1ndez-Su\u00e1rez, J., Fuenlabrada, J.M., 2015a. Provenance of the Variscan Upper Allochthon (Cabo Ortegal Complex, NW Iberian Massif). Gondwana Research, 28, 1434-1448, DOI: 10.1016\/j.gr.2014.10.016.","DOI":"10.1016\/j.gr.2014.10.016"},{"key":"280076","doi-asserted-by":"crossref","unstructured":"Albert, R., Arenas, R., Gerdes, A., S\u00e1nchez Mart\u00ednez, S., Marko, L., 2015b. Provenance of the high-P and high-T unit of the Cabo Ortegal Complex (NW Iberian Massif). Journal of Metamorphic Geology, 33, 959-979, DOI: 10.1111\/jmg.12155.","DOI":"10.1111\/jmg.12155"},{"key":"280077","doi-asserted-by":"crossref","unstructured":"Andonaegui, P., Gonz\u00e1lez del T\u00e1nago, J., Arenas, R., Abati, J., Mart\u00ednez Catal\u00e1n, J.R., Peinado, M., D\u00edaz Garc\u00eda, F., 2002. Tectonic setting of the Monte Castelo gabbro (Ordenes Complex, northwestern Iberian Massif): Evidence for an arc-related terrane in the hanging wall to the Variscan suture, In: Mart\u00ednez Catal\u00e1n, J.R., Hatcher, R.D., Arenas, R., D\u00edaz Garc\u00eda, F. (eds.). Variscan-Appalachian Dynamics: The building of the Late Paleozoic basement. Geological Society of America, Special Paper, 364, 37-56, DOI: 10.1130\/1130-8137-2364-1137.1137.","DOI":"10.1130\/0-8137-2364-7.37"},{"key":"280078","doi-asserted-by":"crossref","unstructured":"Andonaegui, P., Casti\u00f1eiras, P., Gonz\u00e1lez Cuadra, P., Arenas, R., S\u00e1nchez Mart\u00ednez, S., Abati, J., D\u00edaz Garc\u00eda, F., Mart\u00ednez Catal\u00e1n, J.R., 2012. The CorreDOIras orthogneiss (NW Iberian Massif): Geochemistry and geochronology of the Paleozoic magmatic suite developed in a periGondwanan arc. Lithos, 128-131, 84-99, DOI: 10.1016\/j.lithos.2011.11.005.","DOI":"10.1016\/j.lithos.2011.11.005"},{"key":"280079","doi-asserted-by":"crossref","unstructured":"Andonaegui, P., Arenas, R., Albert, R., S\u00e1nchez Mart\u00ednez, S., D\u00edez Fern\u00e1ndez, R., Gerdes, A., 2016a. 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