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

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 marg...

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Bibliographic Details
Main Authors: Pereira, Ricardo, Escada, Cláudia, Represas, Patricia, Ramalho, R.S., Mata, João, Rosas, Filipe M.
Format: Conference Object
Language:English
Published: 2023
Subjects:
Fontanelas volcano
Estremadura Spur intrusion
Tectono-magmatism
West Iberian Margin
Newfoundland
Online Access:http://hdl.handle.net/10400.9/4152
https://doi.org/10.5194/egusphere-egu23-3483
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Summary: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. N/A

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