Neotectonic study of the Santa Marta Fault System, Western foothills of the Sierra Nevada de Santa Marta, Colombia

Idárraga-García, Javier; Romero, J.

doi:10.1016/j.jsames.2009.11.004

Cited by 15 publications

(10 citation statements)

References 13 publications

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“…Note the coincidence between the transition from coupled to uncoupled plate interface with the transition from Bahamas Platform collision to oceanic subduction at the Puerto Rico trench. [Diederix et al, 2012;Idarraga-Garia and Romero, 2010], or earlier GPS results (6 ± 2 mm/yr) [Trenkamp et al, 2002]. The model slip rate for the Bocono fault is consistent with estimates of right-lateral strike-slip motion from paleoseismological investigations [Audemard et al, 1999[Audemard et al, , 2005.…”

Section: Best Fit Modelsupporting

confidence: 82%

“…Consistent with previous results, the Bocono fault also accommodates up to 3 mm/yr of shortening. The left‐lateral strike‐slip motion predicted by the model along the Santa Marta‐Bucaramanga faults is at the low end of slip rate estimates from maximum ages of Quaternary offset features (0.2 mm/yr) [ Paris et al , ], paleoseismological studies at its northern termination (5–15 mm/yr) [ Diederix et al , ; Idarraga‐Garia and Romero , ], or earlier GPS results (6 ± 2 mm/yr) [ Trenkamp et al , ]. The model slip rate for the Bocono fault is consistent with estimates of right‐lateral strike‐slip motion from paleoseismological investigations [ Audemard et al , , ].…”

Section: Discussionmentioning

confidence: 87%

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Current block motions and strain accumulation on active faults in the Caribbean

et al. 2015

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The Caribbean plate and its boundaries with north and south America, marked by subduction and large intra-arc strike-slip faults, are a natural laboratory for the study of strain partitioning and interseismic plate coupling in relation to large earthquakes. Here we use most of the available campaign and continuous GPS measurements in the Caribbean to derive a regional velocity field expressed in a consistent reference frame. We use this velocity field as input to a kinematic model where surface velocities results from the rotation of rigid blocks bounded by locked faults accumulating interseismic strain, while allowing for partial locking along the Lesser Antilles, Puerto Rico, and Hispaniola subduction. We test various block geometries, guided by previous regional kinematic models and geological information on active faults. Our findings refine a number of previously established results, in particular slip rates on the strike-slip faults systems bounding the Caribbean plate to the north and south, and the kinematics of the Gonave microplate. Our much-improved GPS velocity field in the Lesser Antilles compared to previous studies does not require the existence of a distinct Northern Lesser Antilles block and excludes more than 3 mm/yr of strain accumulation on the Lesser Antilles-Puerto Rico subduction plate interface, which appears essentially uncoupled. The transition from a coupled to an uncoupled subduction coincides with a transition in the long-term geological behavior of the Caribbean plate margin from compressional (Hispaniola) to extensional (Puerto Rico and Lesser Antilles), a characteristics shared with several other subduction systems.

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Section: Best Fit Modelsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 87%

Current block motions and strain accumulation on active faults in the Caribbean

et al. 2015

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“…To the northwest, the Santa Marta-Bucaramanga fault system terminates at the northwestern corner of the Sierra Nevada de Santa Marta. Slip rate estimates for this fault system range from 0.2 mm/yr, based on maximum ages of Quaternary offset features (Paris et al, 2000), to 5 and 15 mm/yr, based on paleoseismological studies close to its northern end (Diederix et al, 2009;Idárraga-García and Romero, 2010). This fault system has a 6 ± 2 mm/yr interseismic rate based on elastic dislocation modeling of GPS data (Trenkamp et al, 2002).…”

Section: Northern Andean Domain (~5°s-12°n)mentioning

confidence: 99%

Open-source archive of active faults for northwest South America

Veloza¹,

Styron²,

Taylor³

et al. 2012

GSAT

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We present a publicly available database of active structures for the northern Andes based on the literature, our own field mapping, interpretation of digital elevation models, earthquakes, and the regional velocity field obtained from Global Positioning System (GPS) studies. The "Active Tectonics of the Andes" database (ATA v.1.0) is a digital archive of more than 400 active faults available in a variety of digital formats for use by the scientific and teaching communities. ATA v.1.0 is an open-source archive that is updateable based on new results obtained by the scientific community, and it should prove useful to scientists, teachers, policy makers, and the general population. We use ATA v.1.0 in combination with surface velocities from GPS to evaluate the regional kinematics of faulting in northwest South America. In particular, we find that the development of active strike-slip systems is controlled, in part, by the degree of convergence obliquity between subducting oceanic plates and South America.

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“…The Santa Marta belt is the northwestern and youngest geotectonic province that is divided into two sub-belts: inner sub-belt of cretaceous imbricated metamorphosed volcanoclastic rocks that reached the greenschists to amphibolites facies, and outer sub-belt of mesozoic amphibolites, greenschists and phyllites separated by the lower to middle cenozoic Santa Marta Batholith (Mejía et al 2008). The coastal region of interest in this work, that forms part of the Santa Marta belt, shows a complex geological history and has been of scientific interest in previous works (Tschanz et al 1969;Tschanz et al 1974;Mejía et al 2008;Idárraga-García and Romero 2010;Montes et al 2010;Cordani et al 2016). The Santa Marta Fault System (sfsm) is the most important tectonic accident in the study area with easily recognizable geomorphologic evidences.…”

Section: Geological Settingmentioning

confidence: 92%

Geotourism Potential and Challenges of the Coastal Region Around Santa Marta (Colombia): a Novel Strategy for Socioeconomic Development

Ríos‒Reyes¹,

Jaraba²,

Castellanos-Alarcón³

2021

Cuad. Geogr. Rev. Colomb. Geogr.

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This research article refers to the coastal region around Santa Marta (Colombia), showing a valuable geodiversity from a coastal geomorphology point of view, with great scientific importance for the study of coastal landscapes and attractive for the development of geotourism. The landscape value of the coastal regions of the Colombian Caribbean, in particular of the coastal region around Santa Marta, should be globally recognized to improve and protect its aesthetic and environmental value through geoeducation and geotourism activities that contribute to its geoconservation, motivating efficient management that outlines guidelines that promote the development of appropriate tourist infrastructure, centers of scientific interpretation, dissemination and educational materials, active exchange with geoparks, continuous improvement, and participation of local communities.

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Neotectonic study of the Santa Marta Fault System, Western foothills of the Sierra Nevada de Santa Marta, Colombia

Cited by 15 publications

References 13 publications

Current block motions and strain accumulation on active faults in the Caribbean

Current block motions and strain accumulation on active faults in the Caribbean

Open-source archive of active faults for northwest South America

Geotourism Potential and Challenges of the Coastal Region Around Santa Marta (Colombia): a Novel Strategy for Socioeconomic Development

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