DSpace Repository

Fracturing of the Panamanian Isthmus during initial collision with South America

Show simple item record

dc.contributor.author Farris, David W. en
dc.contributor.author Jaramillo, Carlos A. en
dc.contributor.author Bayona, German en
dc.contributor.author Restrepo-Moreno, Sergio A. en
dc.contributor.author Montes, Camilo en
dc.contributor.author Cardona, Agustin en
dc.contributor.author Mora, Andres en
dc.contributor.author Speakman, Robert Jeff en
dc.contributor.author Glascock, Michael D. en
dc.contributor.author Valencia, Victor en
dc.date.accessioned 2018-08-31T18:29:32Z
dc.date.available 2018-08-31T18:29:32Z
dc.date.issued 2011
dc.identifier.citation Farris, David W., Jaramillo, Carlos A., Bayona, German, Restrepo-Moreno, Sergio A., Montes, Camilo, Cardona, Agustin, Mora, Andres, Speakman, Robert Jeff, Glascock, Michael D., and Valencia, Victor. 2011. "<a href="https://repository.si.edu/handle/10088/84496">Fracturing of the Panamanian Isthmus during initial collision with South America</a>." <em>Geology</em>. 39 (11):1007&ndash;1010. <a href="https://doi.org/10.1130/G32237.1">https://doi.org/10.1130/G32237.1</a> en
dc.identifier.issn 0091-7613
dc.identifier.uri https://hdl.handle.net/10088/84496
dc.description.abstract Tectonic collision between South America and Panama began at 23–25 Ma. The collision is significant because it ultimately led to development of the Panamanian Isthmus, which in turn had wide-ranging oceanic, climatic, biologic, and tectonic implications. Within the Panama Canal Zone, volcanic activity transitioned from hydrous mantle-wedge-derived arc magmatism to localized extensional arc magmatism at 24 Ma, and overall marks a permanent change in arc evolution. We interpret the arc geochemical change to result from fracturing of the Panama block during initial collision with South America. Fracturing of the Panama block led to localized crustal extension, normal faulting, sedimentary basin formation, and extensional magmatism in the Canal Basin and Bocas del Toro. Synchronous with this change, both Panama and inboard South America experienced a broad episode of exhumation indicated by (U-Th)/He and fission-track thermochronology coupled with changing geographic patterns of sedimentary deposition in the Colombian Eastern Cordillera and Llanos Basin. Such observations allow for construction of a new tectonic model of the South America–Panama collision, northern Andes uplift and Panama orocline formation. Finally, synchroneity of Panama arc chemical changes and linked uplift indicates that onset of collision and Isthmus formation began earlier than commonly assumed. en
dc.relation.ispartof Geology en
dc.title Fracturing of the Panamanian Isthmus during initial collision with South America en
dc.type Journal Article en
dc.identifier.srbnumber 106412
dc.identifier.doi 10.1130/G32237.1
rft.jtitle Geology
rft.volume 39
rft.issue 11
rft.spage 1007
rft.epage 1010
dc.description.SIUnit MCI en
dc.description.SIUnit STRI en
dc.citation.spage 1007
dc.citation.epage 1010

Files in this item

This item appears in the following Collection(s)

Show simple item record

Search DSpace


My Account