Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)

The Quintanaloma Fm (Campanian-Maastrichtian) was deposited in a shallow marine environment and contains a lot of rudist shells (Hippuritidae and Radiolitidae), some of them in life position. From a diagenetic point of view, the Radiolitidae seem to be the more interesting, because their cellular mi...

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Detalles Bibliográficos
Autores: Regidor Higuera, I., García Garmilla, Francisco, Elorza, Javier
Tipo de recurso: artículo
Fecha de publicación:2002
País:España
Institución:Universidad de Huelva (UHU)
Repositorio:Arias Montano. Repositorio Institucional de la Universidad de Huelva
Idioma:español
OAI Identifier:oai:ariasmontano.uhu.es:10272/9143
Acceso en línea:http://hdl.handle.net/10272/9143
Access Level:acceso abierto
Palabra clave:Rudists
Upper cretaceons
Cathodoluminescence
Diagenesis
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spelling Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)Cathodoluminescence and diagenesis in rudist shells (Bivalvia) from the Upper Cretaceous of Gredilla de Sedaño (Northern Burgos, Spain)Regidor Higuera, I.García Garmilla, FranciscoElorza, JavierRudistsUpper cretaceonsCathodoluminescenceDiagenesisThe Quintanaloma Fm (Campanian-Maastrichtian) was deposited in a shallow marine environment and contains a lot of rudist shells (Hippuritidae and Radiolitidae), some of them in life position. From a diagenetic point of view, the Radiolitidae seem to be the more interesting, because their cellular microstructure («honeycomb») is-propitious for cement precipitation and mineral authigenesis. Taking into consideration that a pristine composition of the bivalve shells implies the lack of activators such as Mn++, the presence of luminescence in shells can be explained in terms of organic matter diagenetic alteration. Cathodoluminescence (CL) demonstrates that the more obscure and organic-rich a part of the shell, the more luminescent is. Luminescence in radiolitid shells is more evident just in the transition from the upper part of the walls to the base of the subsequent growth line. This could be explained as a result of a vital effect, when the organism needs to reinforce the epitelial mantle, or increase the secretion of extra-paleal liquids. The diagenetic alteration degree was not enough to homogenize the luminescence of the whole shell. From microscopic observations, diagenesis in radiolitid shells developes at two levels: 1) cement precipitation (intense-red dolomite rhombs; well-zoned A cements, some of them «dogtooth»-type; and blotchy/irregularly-zoned blocky calcite B cement); and 2) two phases of recrystallization, which sharply and indiscriminately eliminate the luminiscence of both shells and previous cementsSociedad Geológica de España20022002-01-0120022002-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10272/9143reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelvainstname:Universidad de Huelva (UHU)Españolspaopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:ariasmontano.uhu.es:10272/91432026-06-02T14:58:11Z
dc.title.none.fl_str_mv Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
Cathodoluminescence and diagenesis in rudist shells (Bivalvia) from the Upper Cretaceous of Gredilla de Sedaño (Northern Burgos, Spain)
title Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
spellingShingle Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
Regidor Higuera, I.
Rudists
Upper cretaceons
Cathodoluminescence
Diagenesis
title_short Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
title_full Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
title_fullStr Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
title_full_unstemmed Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
title_sort Catodoluminiscencia y diagénesis en conchas de rudistas (Bivalvia) del Cretácico Superior de Gredilla de Sedaño (Norte de Burgos, España)
dc.creator.none.fl_str_mv Regidor Higuera, I.
García Garmilla, Francisco
Elorza, Javier
author Regidor Higuera, I.
author_facet Regidor Higuera, I.
García Garmilla, Francisco
Elorza, Javier
author_role author
author2 García Garmilla, Francisco
Elorza, Javier
author2_role author
author
dc.contributor.none.fl_str_mv
dc.subject.none.fl_str_mv Rudists
Upper cretaceons
Cathodoluminescence
Diagenesis
topic Rudists
Upper cretaceons
Cathodoluminescence
Diagenesis
description The Quintanaloma Fm (Campanian-Maastrichtian) was deposited in a shallow marine environment and contains a lot of rudist shells (Hippuritidae and Radiolitidae), some of them in life position. From a diagenetic point of view, the Radiolitidae seem to be the more interesting, because their cellular microstructure («honeycomb») is-propitious for cement precipitation and mineral authigenesis. Taking into consideration that a pristine composition of the bivalve shells implies the lack of activators such as Mn++, the presence of luminescence in shells can be explained in terms of organic matter diagenetic alteration. Cathodoluminescence (CL) demonstrates that the more obscure and organic-rich a part of the shell, the more luminescent is. Luminescence in radiolitid shells is more evident just in the transition from the upper part of the walls to the base of the subsequent growth line. This could be explained as a result of a vital effect, when the organism needs to reinforce the epitelial mantle, or increase the secretion of extra-paleal liquids. The diagenetic alteration degree was not enough to homogenize the luminescence of the whole shell. From microscopic observations, diagenesis in radiolitid shells developes at two levels: 1) cement precipitation (intense-red dolomite rhombs; well-zoned A cements, some of them «dogtooth»-type; and blotchy/irregularly-zoned blocky calcite B cement); and 2) two phases of recrystallization, which sharply and indiscriminately eliminate the luminiscence of both shells and previous cements
publishDate 2002
dc.date.none.fl_str_mv 2002
2002-01-01
2002
2002-01-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10272/9143
url http://hdl.handle.net/10272/9143
dc.language.none.fl_str_mv Español
spa
language_invalid_str_mv Español
language spa
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedad Geológica de España
publisher.none.fl_str_mv Sociedad Geológica de España
dc.source.none.fl_str_mv reponame:Arias Montano. Repositorio Institucional de la Universidad de Huelva
instname:Universidad de Huelva (UHU)
instname_str Universidad de Huelva (UHU)
reponame_str Arias Montano. Repositorio Institucional de la Universidad de Huelva
collection Arias Montano. Repositorio Institucional de la Universidad de Huelva
repository.name.fl_str_mv
repository.mail.fl_str_mv
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