Cenozoic Evolution of the Northern Caribbean Plate Boundary: Insights From Thermochronometric, Kinematic and Geomorphic Data

Conrad, Ethan; Faccenna, Claudio; Stöckli, Daniel F.; Becker, T. W.

doi:10.1130/abs/2020am-353996

Cited by 1 publication

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“…We added to an existing database for the region, the Caribbean and Central American active fault database (CCAF‐DB; Styron et al., 2020). We incorporated additional data sources (Conrad et al., 2020; Corbeau, Rolandone, Leroy, Mercier de Lépinay, et al., 2016; French & Schenk, 2004; Possee et al., 2019; Saint Fleur et al., 2020) and compared to Shuttle Radar Topography Mission digital elevation model (SRTM) and Light Detection And Ranging (LiDAR) DEMs. We used the updated fault traces database to build a 3D fault model for the earthquake, including southern and northern branches of the EPGFZ, a thrust fault south of the epicentral location, and a larger northern thrust fault (Figures 1 and 3 and Figures S2 and S3 in Supporting Information ).…”

Section: Methodsmentioning

confidence: 99%

Complex Rupture and Triggered Aseismic Creep During the 14 August 2021 Haiti Earthquake From Satellite Geodesy

Maurer

Dutta

Vernon

et al. 2022

Geophysical Research Letters

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The 2021 August 14 MW 7.2 Nippes, Haiti earthquake occurred 75 km west of the epicenter of the 2010 Leogane earthquake (Haiti) on the transpressive Caribbean ‐ North America plate boundary. We present an updated fault map for Hispaniola and model coseismic and early postseismic fault slip using Interferometric Synthetic Aperture Radar and pixel offsets. We find the earthquake ruptured multiple segments of the Enriquillo‐Plantain Garden Fault Zone. Slip occurred in two main sub‐events on either side of a restraining bend at Pic Macaya, with ∼2.7 m of peak reverse‐slip east of the bend. To the west, slip jumps the restraining bend and further ruptures with ∼1.2 m of left‐lateral slip. Afterslip in the 4 days following the event occurred at shallow depth and adjacent to the coseismic rupture areas and reached the surface east of Pic Macaya.

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