Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México
Fuente:
Redalyc · Ciencias Marinas
This report presents the results of comparative taphonomic and faunal analyses of shelly cheniers (mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico. Three generations of cheniers that differ in age and in the duration and complexity of their taphonomi...
Guardado en:
| Publicado en: | Ciencias Marinas |
|---|---|
| Autor principal: | |
| Formato: | Artículo científico |
| Lenguaje: | en |
| Publicado: |
Universidad Autónoma de Baja California
1995
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1878325299257540608 |
|---|---|
| author | Michal Kowalewski |
| author_facet | Michal Kowalewski |
| collection | Ciencias Marinas |
| container_title | Ciencias Marinas |
| contents | Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México Michal Kowalewski Karl W. Flessa Ciencias de la Tierra cheniers bivalves Holocene Baja California taphofacies analysis This report presents the results of comparative taphonomic and fauna1 analyses of shelly cheniers(mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico.Three generations of cheniers that differ in age and in the duration and complexity of their taphonomichistory were sampled for taphonomic and faunal analyses. The three generations, although al1dominated by the bivalve mollusk Mulinia coforadoensis, differ signiticantly in their taxonomic compositiondue to taphonomic and/or biological differences. Taphofacies analysis of 4,334 shells of M.coloradoensis described by nine variables indicated that the shells accumulated in the cheniers arerarely affected by biological processes and moderately affected by physical processes. The shellscollected from the chenier surface have poorer preservation than the subsurface ones, indicating thattaphonomic degradation is mostly a surface phenomenon. Multivariate analyses discriminate thechenier generations even when the poorly preservable luster variables are excluded from the analysis.Chenier shelly assemblages are taphonomically distinct from assemblages formed in other marineenvironments. They are characterized by a very low intensity of bioerosion and encrustation. 1995 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48021203 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.21 |
| ctrlnum | oai:cienciasmarinas.com.mx:article/990 10.7773/cm.v21i2.990 |
| description | This report presents the results of comparative taphonomic and faunal analyses of shelly cheniers (mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico. Three generations of cheniers that differ in age and in the duration and complexity of their taphonomic history were sampled for taphonomic and faunal analyses. The three generations, although all dominated by the bivalve mollusk Mulinia coloradoensis, differ signiticantly in their taxonomic composition due to taphonomic and/or biological differences. Taphofacies analysis of 4,334 shells of M. coloradoensis described by nine variables indicated that the shells accumulated in the cheniers are rarely affected by biological processes and moderately affected by physical processes. The shells collected from the chenier surface have poorer preservation than the subsurface ones, indicating that taphonomic degradation is mostly a surface phenomenon. Multivariate analyses discriminate the chenier generations even when the poorly preservable luster variables are excluded from the analysis. Chenier shelly assemblages are taphonomically distinct from assemblages formed in other marine environments. They are characterized by a very low intensity of bioerosion and encrustation.
Este trabajo presenta los resultados de la tafonomía comparativa y los analisis faúnicos de los cheniers de conchas (concentraciones residuales dominadas por moluscos) de las planicies de marea del noreste de Baja California, México. Se muestrearon tres generaciones de cheniers, que difieren tanto en edad como en la duración y complejidad de sus historias tafonómicas, para efectuar sus análisis tafonómico y fáunico. Las tres generaciones, aunque todas dominadas por el molusco bivalvo Mulinia coloradoensis, difieren significativamente en sus composiciones tafonómicas debido a diferencias tafonómicas y/o biológicas. El análisis de tafofacies de 4,334 conchas de M. coloradoensis, descrito por nueve variables, indico que las conchas acumuladas en los cheniers son raramente afectadas por procesos biológicos pero moderadamente afectadas por procesos físicos. Las conchas recolectadas en la superficie del chenier se preservaron de forma más pobre que las de la subsuperficie, lo cual indica que la degradación tafonómica es principalmente un fenómeno superficial. Los análisis de multivariables distinguen las generaciones de cheniers aun cuando se excluyan en ellos las variables de lustre pobremente preservadas. Los conjuntos de conchas cheniers son tafonómicamente distintos de los conjuntos formados en otros ambientes marinos, Se caracterizan por intensidades muy bajas de bioerosión e incrustación. |
| format | Artículo científico |
| id | redalyc_48021203 |
| institution | Redalyc Ciencias Marinas |
| language | en |
| publishDate | 1995 |
| publisher | Universidad Autónoma de Baja California |
| spelling | Comparative taphonomy and faunal composition of shelly cheniers from northeastern Baja California, Mexico Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México Kowalewski, M Flessa, KW taphofacies analysis cheniers bivalves Baja California Holocene análsis de tafofacies cheniers bivalvos Baja California holoceno This report presents the results of comparative taphonomic and faunal analyses of shelly cheniers (mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico. Three generations of cheniers that differ in age and in the duration and complexity of their taphonomic history were sampled for taphonomic and faunal analyses. The three generations, although all dominated by the bivalve mollusk Mulinia coloradoensis, differ signiticantly in their taxonomic composition due to taphonomic and/or biological differences. Taphofacies analysis of 4,334 shells of M. coloradoensis described by nine variables indicated that the shells accumulated in the cheniers are rarely affected by biological processes and moderately affected by physical processes. The shells collected from the chenier surface have poorer preservation than the subsurface ones, indicating that taphonomic degradation is mostly a surface phenomenon. Multivariate analyses discriminate the chenier generations even when the poorly preservable luster variables are excluded from the analysis. Chenier shelly assemblages are taphonomically distinct from assemblages formed in other marine environments. They are characterized by a very low intensity of bioerosion and encrustation. Este trabajo presenta los resultados de la tafonomía comparativa y los analisis faúnicos de los cheniers de conchas (concentraciones residuales dominadas por moluscos) de las planicies de marea del noreste de Baja California, México. Se muestrearon tres generaciones de cheniers, que difieren tanto en edad como en la duración y complejidad de sus historias tafonómicas, para efectuar sus análisis tafonómico y fáunico. Las tres generaciones, aunque todas dominadas por el molusco bivalvo Mulinia coloradoensis, difieren significativamente en sus composiciones tafonómicas debido a diferencias tafonómicas y/o biológicas. El análisis de tafofacies de 4,334 conchas de M. coloradoensis, descrito por nueve variables, indico que las conchas acumuladas en los cheniers son raramente afectadas por procesos biológicos pero moderadamente afectadas por procesos físicos. Las conchas recolectadas en la superficie del chenier se preservaron de forma más pobre que las de la subsuperficie, lo cual indica que la degradación tafonómica es principalmente un fenómeno superficial. Los análisis de multivariables distinguen las generaciones de cheniers aun cuando se excluyan en ellos las variables de lustre pobremente preservadas. Los conjuntos de conchas cheniers son tafonómicamente distintos de los conjuntos formados en otros ambientes marinos, Se caracterizan por intensidades muy bajas de bioerosión e incrustación. Universidad Autónoma de Baja California, Instituto de Investigaciones Oceanológicas 1995-03-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article Artículo Arbitrado application/pdf https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/990 10.7773/cm.v21i2.990 Ciencias Marinas; Vol. 21 No. 2 (1995); 155-177 Ciencias Marinas; Vol. 21 Núm. 2 (1995); 155-177 2395-9053 0185-3880 eng https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/990/911 ['Redalyc'] redalyc_48021203 Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México ['Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México', 'Michal Kowalewski', 'Ciencias de la Tierra', 'cheniers', 'bivalves', 'Holocene', 'Baja California', 'taphofacies analysis', 'Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México Michal Kowalewski Karl W. Flessa Ciencias de la Tierra cheniers bivalves Holocene Baja California taphofacies analysis This report presents the results of comparative taphonomic and fauna1 analyses of shelly cheniers(mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico.Three generations of cheniers that differ in age and in the duration and complexity of their taphonomichistory were sampled for taphonomic and faunal analyses. The three generations, although al1dominated by the bivalve mollusk Mulinia coforadoensis, differ signiticantly in their taxonomic compositiondue to taphonomic and/or biological differences. Taphofacies analysis of 4,334 shells of M.coloradoensis described by nine variables indicated that the shells accumulated in the cheniers arerarely affected by biological processes and moderately affected by physical processes. The shellscollected from the chenier surface have poorer preservation than the subsurface ones, indicating thattaphonomic degradation is mostly a surface phenomenon. Multivariate analyses discriminate thechenier generations even when the poorly preservable luster variables are excluded from the analysis.Chenier shelly assemblages are taphonomically distinct from assemblages formed in other marineenvironments. They are characterized by a very low intensity of bioerosion and encrustation. 1995 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48021203 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.21'] ['Michal Kowalewski'] ['Michal Kowalewski'] ['Artículo científico'] ['1995'] ['Universidad Autónoma de Baja California'] ['en'] ['Ciencias de la Tierra', 'cheniers', 'bivalves', 'Holocene', 'Baja California', 'taphofacies analysis'] ['https://www.redalyc.org/articulo.oa?id=48021203'] ['Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México Michal Kowalewski Karl W. Flessa Ciencias de la Tierra cheniers bivalves Holocene Baja California taphofacies analysis This report presents the results of comparative taphonomic and fauna1 analyses of shelly cheniers(mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico.Three generations of cheniers that differ in age and in the duration and complexity of their taphonomichistory were sampled for taphonomic and faunal analyses. The three generations, although al1dominated by the bivalve mollusk Mulinia coforadoensis, differ signiticantly in their taxonomic compositiondue to taphonomic and/or biological differences. Taphofacies analysis of 4,334 shells of M.coloradoensis described by nine variables indicated that the shells accumulated in the cheniers arerarely affected by biological processes and moderately affected by physical processes. The shellscollected from the chenier surface have poorer preservation than the subsurface ones, indicating thattaphonomic degradation is mostly a surface phenomenon. Multivariate analyses discriminate thechenier generations even when the poorly preservable luster variables are excluded from the analysis.Chenier shelly assemblages are taphonomically distinct from assemblages formed in other marineenvironments. They are characterized by a very low intensity of bioerosion and encrustation. 1995 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48021203 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.21'] |
| spellingShingle | Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México Michal Kowalewski Ciencias de la Tierra cheniers bivalves Holocene Baja California taphofacies analysis Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México Michal Kowalewski Karl W. Flessa Ciencias de la Tierra cheniers bivalves Holocene Baja California taphofacies analysis This report presents the results of comparative taphonomic and fauna1 analyses of shelly cheniers(mollusk-dominated lag concentrations) from the tidal flats of northeastem Baja California, Mexico.Three generations of cheniers that differ in age and in the duration and complexity of their taphonomichistory were sampled for taphonomic and faunal analyses. The three generations, although al1dominated by the bivalve mollusk Mulinia coforadoensis, differ signiticantly in their taxonomic compositiondue to taphonomic and/or biological differences. Taphofacies analysis of 4,334 shells of M.coloradoensis described by nine variables indicated that the shells accumulated in the cheniers arerarely affected by biological processes and moderately affected by physical processes. The shellscollected from the chenier surface have poorer preservation than the subsurface ones, indicating thattaphonomic degradation is mostly a surface phenomenon. Multivariate analyses discriminate thechenier generations even when the poorly preservable luster variables are excluded from the analysis.Chenier shelly assemblages are taphonomically distinct from assemblages formed in other marineenvironments. They are characterized by a very low intensity of bioerosion and encrustation. 1995 artículo científico 0185-3880 https://www.redalyc.org/articulo.oa?id=48021203 en http://www.redalyc.org/revista.oa?id=480 Ciencias Marinas application/pdf Universidad Autónoma de Baja California Ciencias Marinas (México) Num.2 Vol.21 |
| title | Tafonomía comparativa y composición fáunica de cheniers de conchas del noreste de Baja California, México |
| title_alt | Comparative taphonomy and faunal composition of shelly cheniers from northeastern Baja California, Mexico |
| topic | Ciencias de la Tierra cheniers bivalves Holocene Baja California taphofacies analysis |
| topic_facet | taphofacies analysis cheniers bivalves Baja California Holocene análsis de tafofacies bivalvos holoceno |
| url | https://www.redalyc.org/articulo.oa?id=48021203 https://cienciasmarinas.com.mx/index.php/cmarinas/article/view/990 |