Mud diapirism, fan sedimentation and strike-slip faulting, Caribbean Colombian Margin

Vernette, Georges; Mauffret, A.; Bobier, Claude; Briceño, Luis A.; Gayet, J.

doi:10.1016/0040-1951(92)90118-p

Cited by 68 publications

(40 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[78] More recently, Vernette et al [1992] reported mud diapirs off the Caribbean coast of Colombia in the Magdalena delta. The authors propose tectonic stress as well as undercompaction of the delta sediments to be the driving forces for extrusion.…”

Section: A9 Northern Colombia and Panamamentioning

confidence: 99%

Significance of Mud Volcanism

Kopf

2002

Reviews of Geophysics

737

646

View full text Add to dashboard Cite

Mud volcanism and diapirism have puzzled geoscientists for ∼2 centuries. They have been described onshore and offshore in many places on Earth, and although they occur in various tectonic settings, the majority of the features known to date are located in compressional tectonic scenarios. This paper summarizes the main thrusts in mud volcano research as well as the various regions in which mud volcanism has been described. Mud volcanoes show variable geometry (up to tens of kilometers in diameter and several hundred meters in height) and a great diversity regarding the origin of the fluid and solid phases. Gas (predominantly methane), water, and mud may be mobilized at subbottom depth of only a few meters but, in places, can originate from several kilometers depth (with minor crustal or mantle input). The possible contribution of mud extrusion to global budgets, both from quiescent fluid emission and from the extrusive processes themselves, is important. In regions where mud volcanoes are abundant, such as the collision zones between Africa and Eurasia, fluid flux through mud extrusion exceeds the compaction‐driven pore fluid expulsion of the accretionary wedge. Also, quiescent degassing of mud volcanoes may contribute significantly to volatile budgets and, hence, to greenhouse climate.

show abstract

Section: A9 Northern Colombia and Panamamentioning

confidence: 99%

Significance of Mud Volcanism

Kopf

2002

Reviews of Geophysics

737

646

View full text Add to dashboard Cite

show abstract

“…Se considera que el diapirismo de lodo es responsable de la conformación geomorfológica actual de la zona costera entre Barranquilla y el golfo de Urabá, así como de la presencia de "volcanes de lodo" en la región continental y submarina cercana (Briceño & Vernette, 1992;Carvajal, 2016).…”

Section: Discussionunclassified

“…El origen del complejo de arrecifes de islas del Rosario está asociado con el diapirismo de lodo (Vernette, 1985;Vernette, et al, 1990;Vernette, et al, 1992). Debe señalarse, también, que la presencia de emanaciones de fluidos y gases en zonas marinas constituye una fuente de nutrientes y explica la aparición y proliferación de comunidades bénticas con un desarrollo anormal de sus individuos, lo cual se ha comprobado en varios sitios de la plataforma continental aledaños a Cartagena (Vernette, et al, 1988).…”

Section: Discussionunclassified

Sobre cambios en la línea de costa entre 1735 y 2011 y la subsidencia en la Bahía de Cartagena de Indias, Colombia

Amaya¹,

Ferrero-Ronquillo

León-Rincón

et al. 2017

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

View full text Add to dashboard Cite

Se analizó la tendencia del ascenso del nivel del mar en Cartagena con respecto a otros puertos en el mar Caribe en el contexto de los cambios que se aprecian en la línea de costa en la región. La comparación entre mapas del sur de la Bahía de Cartagena elaborados en 1735 y 2011 evidenció la desaparición de islas y zonas de manglar en una amplia zona del área suroeste. La pérdida de zona costera en la Bahía se refleja en una mayor tasa de ascenso del nivel del mar en Cartagena debido a la subsidencia local, lo cual requiere de acciones inmediatas de prevención. Los datos geodésicos de la estación GPS instalada sobre el techo de la edificación del Centro de Investigaciones Oceanográficas e Hidrográficas, CIOH, revelaron una posible subsidencia en la región de la Isla de Manzanillo, la cual podrá contrastarse con los datos que puedan obtenerse de una estación empotrada sobre la superficie terrestre. © 2017. Acad. Colomb. Cienc. Ex. Fis. Nat.

show abstract

“…Reef cores dating back thousands of years indicate that U. tenuifolia has been a dominant reef species at various times in history in the Southern Caribbean, before the recent coral reef decline (Vernette, 1985;Vernette et al, 1992). However, there are findings from the last few decades suggesting it is an opportunistic species rather than a dominant one (Aronson et al, 1998(Aronson et al, , 2014).…”

Section: Undaria Tenuifolia: Dominant or Opportunistic?mentioning

confidence: 99%

“…In the Colombian Caribbean (Cartagena area), Undaria tenuifolia Dana (previously assigned to Agaricia), also known as lettuce coral (Figure 1), is today the dominant coral species in shallow semi-exposed reefs (Camargo et al, 2009;Díaz-Pulido et al, 2004;López-Angarita et al, 2014;Restrepo et al, 2006;Sánchez, 1995). This dominance seems to extend at least from historical times, as whole coral reefs uplifted by tectonic activity between 500 AD and 1500 AD exhibit U. tenuifolia-dominated reefs (e.g., Isla Tesoro, Cartagena: Sánchez, 1995;Vernette et al, 1992). There is a recent dominance shift observed during the mid-1990s in Belize, where U. tenuifolia presented lagoonal reef dominance levels as high as 85% after the massive mortality of the staghorn coral, Acropora cervicornis, from white band disease (Aronson et al, 2002b;Aronson & Precht, 1997, 2000Aronson et al, 1998Aronson et al, , 2002cSebens et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Growth strategies of an abundant reef-building coral in the southern Caribbean (Undaria tenuifolia)

Caceres

Sánchez

2015

Rev. Acad. Colomb. Cienc. Ex. Fis. Nat.

View full text Add to dashboard Cite

The Caribbean coral community structure is changing, particularly species dominance. The Acropora die-off, at many southern and western Caribbean reefs, has allowed the branching scleractinian coral Undaria tenuifolia Dana to become one of the dominant species in these shallow reefs. In this study, colonies of U. tenuifolia were followed for a year using digital imagery. We developed a size class model that allowed us to estimate population fluctuation and growth strategies (colony growth rates and clonal processes). Growth rates varied with colony size; mid-sized colonies doubled their size in a year, while larger colonies often undergo fission. The clonal strategies, i.e., fusion and fission, allow U. tenuifolia to compensate for the low survival rates of early larval post-settlement thus being able to become a dominant coral species in the current reef scenario. The size matrix model formulated on the basis of a relative colony growth rate offered a practical approach for a short-term observation situation, generating a "timeinvariant" transition model. Mortality patterns were not correlated to size classes and were variable by location and time. Overall, population abundance was stable over the monitored period of time. The high survivorship of U. tenuifolia after clonal fragmentation, as well as its high growth rate, suggests that this is a potential species to be cultured, which could be a solution given that this species has become the most common coral being extracted and sold as a souvenir in Cartagena, Colombia.Key words: Agaricia, Undaria tenuifolia, clonal, community structure shifts, colonial growth, Caribbean Sea, coral reefs, coral extraction. Estrategias de crecimiento de un abundante coral formador de arrecifes en el Caribe sur (Undaria tenuifolia) ResumenLa estructura de las comunidades coralinas del mar Caribe está cambiando, sobre todo en cuanto a especies dominantes. Particularmente la mortandad de Acropora, en muchos arrecifes del sur y oeste del Caribe, ha permitido que el coral escleractínio Undaria tenuifolia Dana se convierta en una de las especies dominantes en los arrecifes someros. En este estudio, se le hizo seguimiento a colonias de U. tenuifolia, durante un año mediante el uso de imágenes digitales. Se desarrolló un modelo de clases de tamaño que permite estimar la fluctuación poblacional y determinar la estrategia de crecimiento. El modelo de clases de tamaño calcula las tasas de crecimiento de las colonias así como los procesos clonales. La clase de tamaño de la colonia afecta la estrategia de crecimiento de esta, donde colonias medianas pueden duplicar su tamaño en un año mientras las colonias más grandes generalmente se dividen. Las estrategias clonales, e.g., fisión y fusión, observadas durante el período de estudio, le permiten a U. tenuifolia sobreponerse a las bajas tasas de sobrevivencia del asentamiento post-larval, además de convertirla en una especie de coral dominante. La matriz del modelo de tamaños formulado a partir del crecimiento relativo de la colonia of...

show abstract

Mud diapirism, fan sedimentation and strike-slip faulting, Caribbean Colombian Margin

Cited by 68 publications

References 18 publications

Significance of Mud Volcanism

Significance of Mud Volcanism

Sobre cambios en la línea de costa entre 1735 y 2011 y la subsidencia en la Bahía de Cartagena de Indias, Colombia

Growth strategies of an abundant reef-building coral in the southern Caribbean (Undaria tenuifolia)

Contact Info

Product

Resources

About