Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama
We present new paleomagnetic data of 25 sites (240 specimens) along the southwestern part of the Azuero Peninsula, Panama. The data show two paleomagnetic domains in the peninsula: a northern domain featuring uniformly large vertical-axis clockwise rotation values of 73.4 ± 12° across to Azuero Soná...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00393169_v61_n2_p199_RodriguezParra |
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todo:paper_00393169_v61_n2_p199_RodriguezParra2023-10-03T14:49:38Z Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama Rodriguez-Parra, L.A. Gaitán, C. Montes, C. Bayona, G. Rapalini, A. collision-induced rotation paleogeography paleomagnetism Panamanian Arc fault zone magnetic declination paleogeography paleomagnetism seamount Azuero Peninsula Panama [Central America] We present new paleomagnetic data of 25 sites (240 specimens) along the southwestern part of the Azuero Peninsula, Panama. The data show two paleomagnetic domains in the peninsula: a northern domain featuring uniformly large vertical-axis clockwise rotation values of 73.4 ± 12° across to Azuero Soná Fault Zone with a single mean direction with declination of 81.2° and inclination of -3.2° (95% confidence of 11.7° and precision parameter of 18.09), and a scattered paleomagnetic domain to the south. These contrasting domains could be attributed to the collision of fartravelled/ allochthonous seamounts that approached the Panama arc as subduction of the Farallon plate brought them to the margin. As consequence of this collision the fartravelled seamounts were fragmented and scattered along the margin while the Panama arc rotated into the colliding seamounts. These new paleomagnetic data suggest that the Campanian-Eocene arc segment in the Azuero Peninsula was originally oriented NE-SW, implying an original curvature for this part of the arc. © 2017, Institute of Geophysics of the ASCR, v.v.i. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00393169_v61_n2_p199_RodriguezParra |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
collision-induced rotation paleogeography paleomagnetism Panamanian Arc fault zone magnetic declination paleogeography paleomagnetism seamount Azuero Peninsula Panama [Central America] |
| spellingShingle |
collision-induced rotation paleogeography paleomagnetism Panamanian Arc fault zone magnetic declination paleogeography paleomagnetism seamount Azuero Peninsula Panama [Central America] Rodriguez-Parra, L.A. Gaitán, C. Montes, C. Bayona, G. Rapalini, A. Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama |
| topic_facet |
collision-induced rotation paleogeography paleomagnetism Panamanian Arc fault zone magnetic declination paleogeography paleomagnetism seamount Azuero Peninsula Panama [Central America] |
| description |
We present new paleomagnetic data of 25 sites (240 specimens) along the southwestern part of the Azuero Peninsula, Panama. The data show two paleomagnetic domains in the peninsula: a northern domain featuring uniformly large vertical-axis clockwise rotation values of 73.4 ± 12° across to Azuero Soná Fault Zone with a single mean direction with declination of 81.2° and inclination of -3.2° (95% confidence of 11.7° and precision parameter of 18.09), and a scattered paleomagnetic domain to the south. These contrasting domains could be attributed to the collision of fartravelled/ allochthonous seamounts that approached the Panama arc as subduction of the Farallon plate brought them to the margin. As consequence of this collision the fartravelled seamounts were fragmented and scattered along the margin while the Panama arc rotated into the colliding seamounts. These new paleomagnetic data suggest that the Campanian-Eocene arc segment in the Azuero Peninsula was originally oriented NE-SW, implying an original curvature for this part of the arc. © 2017, Institute of Geophysics of the ASCR, v.v.i. |
| format |
JOUR |
| author |
Rodriguez-Parra, L.A. Gaitán, C. Montes, C. Bayona, G. Rapalini, A. |
| author_facet |
Rodriguez-Parra, L.A. Gaitán, C. Montes, C. Bayona, G. Rapalini, A. |
| author_sort |
Rodriguez-Parra, L.A. |
| title |
Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama |
| title_short |
Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama |
| title_full |
Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama |
| title_fullStr |
Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama |
| title_full_unstemmed |
Arc-seamount collision: driver for vertical-axis rotations in Azuero, Panama |
| title_sort |
arc-seamount collision: driver for vertical-axis rotations in azuero, panama |
| url |
http://hdl.handle.net/20.500.12110/paper_00393169_v61_n2_p199_RodriguezParra |
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AT rodriguezparrala arcseamountcollisiondriverforverticalaxisrotationsinazueropanama AT gaitanc arcseamountcollisiondriverforverticalaxisrotationsinazueropanama AT montesc arcseamountcollisiondriverforverticalaxisrotationsinazueropanama AT bayonag arcseamountcollisiondriverforverticalaxisrotationsinazueropanama AT rapalinia arcseamountcollisiondriverforverticalaxisrotationsinazueropanama |
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