Late Cretaceous post-rift magma emplacement offshore the West Iberian Margin [Abstract]

Pereira, Ricardo; Escada, Cláudia; Represas, Patricia; Ramalho, R.S.; Mata, João; Rosas, Filipe M.

http://hdl.handle.net/10400.9/4152

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Abstract(s)

ABSTRACT: The West Iberian Margin is a prime example of a magma-poor hyperextended continental margin. However, the margin is punctuated by three discrete Mesozoic magmatic events, from which the last, occurring 20-40 M.a. after complete lithospheric breakup of the Iberia-Newfoundland conjugate margin, is related to the late Cretaceous Atlantic Alkaline Province. It is characterised onshore by multiple outcropping intrusive (Sintra, Sines and Monchique) and extrusive (e.g., the Lisbon Volcanic Complex) alkaline suites of magmatism, and offshore by conspicuous and enigmatic magnetic anomalies, suggesting additional magmatic features.

Keywords

Fontanelas volcano Estremadura Spur intrusion Tectono-magmatism West Iberian Margin

URI

http://hdl.handle.net/10400.9/4152

Citation

Pereira, R... et.al - Late Cretaceous magmatism offshore the central West Iberian Margin. EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, abstract EGU23-3483