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Seismic refraction and reflection profiles, and magnetic and gravity data from each segment, show a consistent pattern of geophysical observations across the ocean\u2010continent transition (OCT) zone, which is a few tens of kilometers wide. We emphasize here the discovery of thin (2\u20134 km) oceanic crust underlain by 7.6 km s<jats:sup>\u22121<\/jats:sup> material within the OCT. The available evidence favors the suggestion that the 7.6 km s<jats:sup>\u22121<\/jats:sup> layer is serpentinized peridotite and that the thin oceanic crust is primarily the result of a poor magma supply for a few million years immediately after continental breakup. This thin crust may be the source of some ophiolites which exhibit thin crustal sections and continental margin affinities.<\/jats:p>","DOI":"10.1029\/93tc00059","type":"journal-article","created":{"date-parts":[[2008,2,6]],"date-time":"2008-02-06T15:04:28Z","timestamp":1202310268000},"page":"1230-1239","source":"Crossref","is-referenced-by-count":103,"title":["Thin crust at the western Iberia Ocean\u2010Continent transition and ophiolites"],"prefix":"10.1029","volume":"12","author":[{"given":"R. B.","family":"Whitmarsh","sequence":"first","affiliation":[]},{"given":"L. M.","family":"Pinheiro","sequence":"additional","affiliation":[]},{"given":"P. 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