Cosmic impact versus terrestrial origin of the Azuara structure (Spain): A review
Author
Cortés, Angel L.Díaz-Martínez, Enrique
Sanz-Rubio, Enrique
Martínez-Frías, Jésus
Fernández, Cristina
Issue Date
2002-01-01
Metadata
Show full item recordCitation
Cortés, A. L., Díaz‐Martínez, E., Sanz‐Rubio, E., Martínez‐Frías, J., & Fernández, C. (2002). Cosmic impact versus terrestrial origin of the Azuara structure (Spain): A review. Meteoritics & Planetary Science, 37(6), 875-894.Publisher
The Meteoritical SocietyJournal
Meteoritics & Planetary ScienceAdditional Links
https://meteoritical.org/Abstract
The Azuara structure is the largest one proposed so far in Spain as possibly related to a cosmic impact event. A review of the evidence set forward in favor of and against its cosmic origin indicates that the discussion is not yet finished. Some megascopic features (inverted stratigraphy, megabreccia, negative gravity anomalies) and shock-metamorphic effects (planar deformational features) have been described in relation with the structure, although their real significance has been questioned and is still being debated. Comparison with other similar-sized verified impacts suggests that unequivocal impactogenic features are yet to be found before the Azuara structure can be related to a cosmic impact. Until then, the Azuara structure should be considered as an unverified impact structure, and should not be included in global comprehensive maps of terrestrial impact structures.Type
Articletext
Language
enISSN
1945-5100ae974a485f413a2113503eed53cd6c53
10.1111/j.1945-5100.2002.tb00862.x