From neogene thin-skin to recent thick-skin deformation in Haiti fold-and-thrust belt (Western Hispaniola)
| Autor: | R. Momplaisir, Nadine Ellouz-Zimmermann, Dominique Boisson, Jacques Dentzer, Manuel Pubellier, Helliot Amilcar, Hildegonde Cenatus Amilcar |
|---|---|
| Přispěvatelé: | Laboratoire de géologie de l'ENS (LGENS), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), IFP Energies nouvelles (IFPEN), Universite d'État d'Haïti (UEH), Fondation Trait-d’Union (FTU) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
North caribbean plate boundary
geography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Carbonate platform [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Geology Crust Massif 010502 geochemistry & geophysics Neogene 01 natural sciences Haiti Plate tectonics Paleontology Tectonics Fold-and-thrust belt Fold and thrust belt Thrust fault Thin-skin to thick-skin tectonics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Structural Geology Journal of Structural Geology, Elsevier, 2021, 151, pp.104414. ⟨10.1016/j.jsg.2021.104414⟩ |
| ISSN: | 0191-8141 |
| Popis: | International audience; Haiti lies along the North Caribbean plate boundary, marked by two major left-lateral strike-slip faults. A southwest-verging Trans-Haitian fold-and-thrust belt (FTB), mostly affecting tertiary carbonate platform, developed in central Haiti between the two faults, south of the Massif du Nord and the San Juan–Los Pozos Fault Zone, as a result of north-south shortening. The large NW-SE antiformal Gonâve Island and Ridge mark the southwest termination of the FTB as it encountered the Southern Peninsula and Enriquillo-Plantain Garden Fault Zone. We show that this collision resulted in a tightening of the deformed wedge and thrust faults rooted deeper into the crust, leading to a transition from thin-skinned to thick-skinned tectonics in the Pliocene. These short- (3–6 km) and long- (15–30 km) wavelength folding deformations are temporally distinct in the north and more concomitant in the south, where compressional thin-skinned deformation is still active. The thick-skinned shortening was mostly expressed during the Quaternary, as shown by the formation of folds and uplift of terraces between 1.7 Ma and today. This thick-skinned detachment is characterised by a stronger imprint of strike-slip component, dragging the FTB to a more E-W direction in its northwest and southeast extremities. Understanding of the fault zone geometry of the recent 2010 Haiti earthquake (M = 7.2) could be reconsidered in the light of this tectonic transition. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect