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| Marjanovic, Milena; Singh, Satish C.; Gregory, Emma P. M.; Grevemeyer, Ingo; Growe, Kevin; Wang, Zhikai; Vaddineni, Venkata; Laurencin, Muriel; Carton, Helene; De La Pena, Laura Gomez; Filbrandt, Christian. |
| Oceanic transform faults and fracture zones (FZs) represent major bathymetric features that keep the records of past and present strike-slip motion along conservative plate boundaries. Although they play an important role in ridge segmentation and evolution of the lithosphere, their structural characteristics, and their variation in space and time, are poorly understood. To address some of the unknowns, we conducted interdisciplinary geophysical studies in the equatorial Atlantic Ocean, the region where some of the most prominent transform discontinuities have been developing. Here we present the results of the data analysis in the vicinity of the Chain FZ, on the South American Plate. The crustal structure across the Chain FZ, at the contact between... |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00690/80171/83239.pdf |
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| Laurencin, Muriel; Marcaillou, B.; Graindorge, D.; Klingelhoefer, Frauke; Lallemand, S.; Laigle, M.; Lebrun, J. -f.. |
| The influence of the highly oblique plate convergence at the northern Lesser Antilles onto the margin strain partitioning and deformation pattern, although frequently invoked, has never been clearly imaged. The Anegada Passage is a set of basins and deep valleys, regularly related to the southern boundary of the Puerto-Rico-Virgin-Islands (PRVI) microplate. Despite the publications of various tectonic models mostly based on bathymetric data, the tectonic origin and deformation of this Passage remains unconstrained in the absence of deep structure imaging. During cruises Antithesis 1 and 3 (2013 - 2016), we recorded the first deep multichannel seismic images and new multibeam data in the northern Lesser Antilles margin segment in order to shed a new light... |
| Tipo: Text |
Palavras-chave: Oblique subduction zone; Strain partitioning; Anegada Passage; Lesser Antilles margin; Multichannel seismic reflection. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00386/49710/50236.pdf |
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