A new type of active margin: the convergent-extensional margin, as exemplified by the Middle America Trench of Guatemala
Aubouin, J.; Bourgois, J.; Azéma, J. (1984). A new type of active margin: the convergent-extensional margin, as exemplified by the Middle America Trench of Guatemala. Earth Planet. Sci. Lett. 67(2): 211-218. https://dx.doi.org/10.1016/0012-821X(84)90116-X
In: Earth and Planetary Science Letters. Elsevier: Amsterdam. ISSN 0012-821X; e-ISSN 1385-013X, meer
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| Trefwoorden |
Earth sciences > Geology > Tectonics
ISE, Middle America Trench
Subduction zones
Topographic features > Submarine features > Continental margins > Active margins
Middle America Trench [Marine Regions]
Marien/Kust |
| Auteurs | | Top |
- Aubouin, J.
- Bourgois, J.
- Azéma, J.
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| Abstract |
The results of DSDP Legs 67 and 84, during which a transect of holes was drilled across the Middle America Trench off Guatemala, show no accretion at the front of that subduction zone since early Eocene time. The tectonic evolution of the trench includes extensional structure on the landward as well as the seaward trench slopes. The Guatemalan margin is proposed as the model of a new type of active margin, the convergent-extensional active margin (CE margin). |
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