Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b

Calcified root cells, forming microspar and pseudospar mosaics of calcite and/or dolomite crystals, constitute a major component of calcretes and dolocretes from the Miocene of the Madrid Basin. The calcified cells occur in massive nodules or fill root tubes in the calcrete-dolocrete profiles. The a...

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Authors: Alonso Zarza, Ana María, Sanz Montero, María Esther, Calvo Sorando, José Pedro, Estévez López, Pilar
Format: article
Publication Date:1998
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/59037
Online Access:https://hdl.handle.net/20.500.14352/59037
Access Level:Open access
Keyword:552.5(460.281)
Palaeosols
Calcified root cells
Biomineralization
Microcodium
Madrid Basin
Petrología
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oai_identifier_str oai:docta.ucm.es:20.500.14352/59037
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repository_id_str
spelling Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium bAlonso Zarza, Ana MaríaSanz Montero, María EstherCalvo Sorando, José PedroEstévez López, Pilar552.5(460.281)PalaeosolsCalcified root cellsBiomineralizationMicrocodiumMadrid BasinPetrologíaCalcified root cells, forming microspar and pseudospar mosaics of calcite and/or dolomite crystals, constitute a major component of calcretes and dolocretes from the Miocene of the Madrid Basin. The calcified cells occur in massive nodules or fill root tubes in the calcrete-dolocrete profiles. The arrangement of the cells within the mosaics and their internal features, together with the isotopic data, clearly indicate that the crystals formed through the calcification of root cells and not through recrystallization or dolomitization. Calcified root cells formed in a favourable microenvironment caused by biochemical phenomena associated with plant growth. In these examples, the calcification is incomplete as only in the innermost part of the root the cells were totally calcified, whereas in the root cortex only the cell walls were calcified. The distribution of the calcified cells within the roots was controlled by me different ionic environments which prevail within an active root system. In the inner part the ionic conditions were mostly controlled by the cellular activity of the root creating a suitable microenvironment for the biomineralization of the cells. This differs notably from most published examples of calcified root cells in which it is usual for the cortical cells of roots to be completely calcified. The calcified root cells of the Madrid Basin resemble unequivocally the problematic Microcodium (b), which suggests that this type of Microcodium formed through calcification of root cells.ElsevierUniversidad Complutense de Madrid19981998-01-0119981998-01-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/59037reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/590372026-06-02T12:44:21Z
dc.title.none.fl_str_mv Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
title Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
spellingShingle Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
Alonso Zarza, Ana María
552.5(460.281)
Palaeosols
Calcified root cells
Biomineralization
Microcodium
Madrid Basin
Petrología
title_short Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
title_full Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
title_fullStr Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
title_full_unstemmed Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
title_sort Calcified root cells in Miocene pedogenic carbonates of the Madrid Basin: evidence for the origin of Microcodium b
dc.creator.none.fl_str_mv Alonso Zarza, Ana María
Sanz Montero, María Esther
Calvo Sorando, José Pedro
Estévez López, Pilar
author Alonso Zarza, Ana María
author_facet Alonso Zarza, Ana María
Sanz Montero, María Esther
Calvo Sorando, José Pedro
Estévez López, Pilar
author_role author
author2 Sanz Montero, María Esther
Calvo Sorando, José Pedro
Estévez López, Pilar
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 552.5(460.281)
Palaeosols
Calcified root cells
Biomineralization
Microcodium
Madrid Basin
Petrología
topic 552.5(460.281)
Palaeosols
Calcified root cells
Biomineralization
Microcodium
Madrid Basin
Petrología
description Calcified root cells, forming microspar and pseudospar mosaics of calcite and/or dolomite crystals, constitute a major component of calcretes and dolocretes from the Miocene of the Madrid Basin. The calcified cells occur in massive nodules or fill root tubes in the calcrete-dolocrete profiles. The arrangement of the cells within the mosaics and their internal features, together with the isotopic data, clearly indicate that the crystals formed through the calcification of root cells and not through recrystallization or dolomitization. Calcified root cells formed in a favourable microenvironment caused by biochemical phenomena associated with plant growth. In these examples, the calcification is incomplete as only in the innermost part of the root the cells were totally calcified, whereas in the root cortex only the cell walls were calcified. The distribution of the calcified cells within the roots was controlled by me different ionic environments which prevail within an active root system. In the inner part the ionic conditions were mostly controlled by the cellular activity of the root creating a suitable microenvironment for the biomineralization of the cells. This differs notably from most published examples of calcified root cells in which it is usual for the cortical cells of roots to be completely calcified. The calcified root cells of the Madrid Basin resemble unequivocally the problematic Microcodium (b), which suggests that this type of Microcodium formed through calcification of root cells.
publishDate 1998
dc.date.none.fl_str_mv 1998
1998-01-01
1998
1998-01-01
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 https://hdl.handle.net/20.500.14352/59037
url https://hdl.handle.net/20.500.14352/59037
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
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
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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