Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis

12 páginas.- 9 figuras.- 6 tablas.- 90 referencias

Detalles Bibliográficos
Autores: D’Angeli, Ilenia M., Naylor, L. A., Lee, Martin, Miller, A. Z., Mylroie, John, Waele, J. de
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2020
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/199494
Acceso en línea:http://hdl.handle.net/10261/199494
Access Level:acceso abierto
Palabra clave:Flank margin caves
Mixing dissolution
Tides
Bioconstruction-bioweathering processes
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spelling Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesisD’Angeli, Ilenia M.Naylor, L. A.Lee, MartinMiller, A. Z.Mylroie, JohnWaele, J. deFlank margin cavesMixing dissolutionTidesBioconstruction-bioweathering processes12 páginas.- 9 figuras.- 6 tablas.- 90 referenciasSan Salvador (Bahamas) is a carbonate island with dozens of flank margin caves formed in the phreatic zone by fresh seawater mixing within the freshwater lens. These caves have no direct connection with the sea, and form at or close to the tidally influenced fluctuating water table. After sea-level fall, in their subaerial parts caves are enlarged mainly by rock dissolution and by erosion close to the water level, condensation-corrosion and breakdown processes. For understanding the geomorphological features observed in these caves and how they are related to light attenuation, we investigated three sampling sites in the tidally influenced zone of Lighthouse Cave, which has been re-invaded by seawater during the Holocene sea-level highstand. A freshwater lens no longer exists within or adjacent to the cave. Rock samples were collected above and below the internal lake shores close to the entrance, and in the twilight and dark zones of this cave. Light and electron microscopy examinations were conducted for detecting microbial cells, as well as bioconstruction and bioweathering features. In addition, a high precision laser scanner was used for characterising sample microtopography. Our data showed that the microtopography and geomorphology of the lake shore samples (cave entrance) are dominated by bioweathering, whereas the samples of the twilight and dark zones are controlled by a combination of both bioweathering and bioconstructive processes depending on light availability. Bioconstructive structures, such as semi-planar lamination, at the fluctuating water level of the Lighthouse Cave show that dissolution due to water mixing of sea and freshwater in the Holocene is no longer the most important speleogenetic process. We propose that the geomorphological evolution is strongly influenced by the degree of rock diagenesis more than the initial mechanism of speleogenesis.the support from the CEECIND/01147/2017 contract funded by Fundação para a Ciência e a Tecnologia (Portugal). Funding was also provided by the Spanish project MINECO CGL2016-75590-P with ERDF funds.Peer reviewedElsevierFundação para a Ciência e a Tecnologia (Portugal)Ministerio de Economía, Industria y Competitividad (España)European CommissionD’Angeli, Ilenia M. [0000-0002-2471-62 36]Naylor, L. A. [0000-0002-4065-2674]Miller, A. Z. [0000-0002-0553-8470]Waele, J. de [0000-0001-5325-5208]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202020202020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/199494reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-75590-Phttp://dx.doi.org/10.1016/j.geomorph.2020.107054Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1994942026-05-22T06:33:51Z
dc.title.none.fl_str_mv Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
title Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
spellingShingle Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
D’Angeli, Ilenia M.
Flank margin caves
Mixing dissolution
Tides
Bioconstruction-bioweathering processes
title_short Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
title_full Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
title_fullStr Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
title_full_unstemmed Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
title_sort Light attenuation as a control for microbiogeomorphic features: Implications for coastal cave speleogenesis
dc.creator.none.fl_str_mv D’Angeli, Ilenia M.
Naylor, L. A.
Lee, Martin
Miller, A. Z.
Mylroie, John
Waele, J. de
author D’Angeli, Ilenia M.
author_facet D’Angeli, Ilenia M.
Naylor, L. A.
Lee, Martin
Miller, A. Z.
Mylroie, John
Waele, J. de
author_role author
author2 Naylor, L. A.
Lee, Martin
Miller, A. Z.
Mylroie, John
Waele, J. de
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Fundação para a Ciência e a Tecnologia (Portugal)
Ministerio de Economía, Industria y Competitividad (España)
European Commission
D’Angeli, Ilenia M. [0000-0002-2471-62 36]
Naylor, L. A. [0000-0002-4065-2674]
Miller, A. Z. [0000-0002-0553-8470]
Waele, J. de [0000-0001-5325-5208]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Flank margin caves
Mixing dissolution
Tides
Bioconstruction-bioweathering processes
topic Flank margin caves
Mixing dissolution
Tides
Bioconstruction-bioweathering processes
description 12 páginas.- 9 figuras.- 6 tablas.- 90 referencias
publishDate 2020
dc.date.none.fl_str_mv 2020
2020
2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/199494
url http://hdl.handle.net/10261/199494
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2016-75590-P
http://dx.doi.org/10.1016/j.geomorph.2020.107054
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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