Root calcrete formation on Quaternary karstic surfaces of Grand Cayman
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| Natura: | Artículo científico |
| Lingua: | en |
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Universitat de Barcelona
2007
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| _version_ | 1876449791981912064 |
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| author | A.M. Alonso-Zarza |
| author_facet | A.M. Alonso-Zarza |
| contents | Root calcrete formation on Quaternary karstic surfaces of Grand Cayman A.M. Alonso-Zarza B. Jones Ciencias de la Tierra Root Karst Calcretes Quaternary Cayman Island The rugged karst terrain developed on the dolostones of the Miocene Cayman Formation (Fm) on Grand Caymanincludes numerous large cavities that formed through the activity of tree roots. The surfaces of those cavitiesare coated with laminated calcrete crusts up to 8 cm thick that are formed of an alteration zone, an accretionaryzone, and final infill of the cavities. These crusts are formed of various laminae, including dolostonewith root traces, alveolar septal structures, peloids, micritic and microsparitic laminae, micrite with bioclasts,and pisoliths. Features such as microborings, spores, needle-fiber calcite and micro-rods are common in allparts of the calcrete crust. Calcrete formation was initiated as the roots and associated microorganisms generatedthe cavities. Later on trapping and binding processes and organically induced precipitation of carbonateallowed the formation of the accretionary (mostly laminar) part of the calcrete. The last phases of crust formationtook place when ponded waters filled the cavities. The calcrete crusts developed on the Cayman Formationdolostones record a very specific setting for calcrete formation and constitute a good example of non-horizontalcalcrete crusts. 2007 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50550106 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.1 Vol.5 |
| format | Artículo científico |
| id | redalyc_50550106 |
| institution | Redalyc |
| language | en |
| publishDate | 2007 |
| publisher | Universitat de Barcelona |
| spellingShingle | Root calcrete formation on Quaternary karstic surfaces of Grand Cayman A.M. Alonso-Zarza Ciencias de la Tierra Root Karst Calcretes Quaternary Cayman Island Root calcrete formation on Quaternary karstic surfaces of Grand Cayman A.M. Alonso-Zarza B. Jones Ciencias de la Tierra Root Karst Calcretes Quaternary Cayman Island The rugged karst terrain developed on the dolostones of the Miocene Cayman Formation (Fm) on Grand Caymanincludes numerous large cavities that formed through the activity of tree roots. The surfaces of those cavitiesare coated with laminated calcrete crusts up to 8 cm thick that are formed of an alteration zone, an accretionaryzone, and final infill of the cavities. These crusts are formed of various laminae, including dolostonewith root traces, alveolar septal structures, peloids, micritic and microsparitic laminae, micrite with bioclasts,and pisoliths. Features such as microborings, spores, needle-fiber calcite and micro-rods are common in allparts of the calcrete crust. Calcrete formation was initiated as the roots and associated microorganisms generatedthe cavities. Later on trapping and binding processes and organically induced precipitation of carbonateallowed the formation of the accretionary (mostly laminar) part of the calcrete. The last phases of crust formationtook place when ponded waters filled the cavities. The calcrete crusts developed on the Cayman Formationdolostones record a very specific setting for calcrete formation and constitute a good example of non-horizontalcalcrete crusts. 2007 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50550106 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.1 Vol.5 |
| title | Root calcrete formation on Quaternary karstic surfaces of Grand Cayman |
| topic | Ciencias de la Tierra Root Karst Calcretes Quaternary Cayman Island |
| url | https://www.redalyc.org/articulo.oa?id=50550106 |