Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.

Amber from a Lower Cretaceous outcrop at San Just, located in the Eastern Iberian Peninsula (Escucha Formation, Maestrat Basin), was investigated to evaluate its physico-chemical properties. Thermogravimetric (TG) and Differential Thermogravimetric (DTG) analyses, infra-red spectroscopy, elemental a...

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Authors: Dal Corso, Jacopo, Roghi, Guido, Ragazzi, Eugenio, Angelini, I., Giraetta, A., Soriano, C., Delclòs Martínez, Xavier, Jenkyns, Hugh C.
Format: article
Status:Published version
Publication Date:2013
Country:España
Institution:Universidad de Barcelona
Repository:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/49189
Online Access:https://hdl.handle.net/2445/49189
Access Level:Open access
Keyword:Ambre
Paleoecologia
Paleoclimatologia
Espanya
Amber
Paleoecology
Paleoclimatology
Spain
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spelling Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.Dal Corso, JacopoRoghi, GuidoRagazzi, EugenioAngelini, I.Giraetta, A.Soriano, C.Delclòs Martínez, XavierJenkyns, Hugh C.AmbrePaleoecologiaPaleoclimatologiaEspanyaAmberPaleoecologyPaleoclimatologySpainAmber from a Lower Cretaceous outcrop at San Just, located in the Eastern Iberian Peninsula (Escucha Formation, Maestrat Basin), was investigated to evaluate its physico-chemical properties. Thermogravimetric (TG) and Differential Thermogravimetric (DTG) analyses, infra-red spectroscopy, elemental and C-isotope analyses were performed. Physico-chemical differences between the internal light nuclei and the peripheral darker portions of San Just amber can be attributed to processes of diagenetic alteration that preferentially took place in the external amber border colonized by microorganisms (fungi or bacteria) when the resin was still liquid or slightly polymerized. δ13Camber values of different pieces of the same sample, from the nucleus to the external part, are remarkably homogeneous, as are δ13Camber values of the darker peripheral portions and lighter inner parts of the same samples. Hence, neither invasive microorganisms, nor diagenetic alteration, changed the bulk isotopic composition of the amber. δ13C values of different amber samples range from -21.1 to -24 , as expected for C3 plant-derived material. C-isotope analysis, coupled to palaeobotanical, TG and DTG data and infra-red spectra, suggests that San Just amber was exuded by only one conifer species, belonging to either the Cheirolepidiaceae or Aracauriaceae, coniferous families probably living under stable palaeoenvironmental and palaeoecological conditions.(UB). (ICTJA). (IDEA). (UAB). (CSIC)2013info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/49189Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: http://dx.doi.org/10.1344/105.000001871Geologica Acta, 2013, vol. 11, num. 3, p. 359-370http://dx.doi.org/10.1344/105.000001871(c) Dal Corso, J. et al., 2013info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/491892026-05-27T06:46:51Z
dc.title.none.fl_str_mv Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
title Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
spellingShingle Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
Dal Corso, Jacopo
Ambre
Paleoecologia
Paleoclimatologia
Espanya
Amber
Paleoecology
Paleoclimatology
Spain
title_short Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
title_full Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
title_fullStr Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
title_full_unstemmed Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
title_sort Physico-chemical analysis of Albian (Lower Cretaceous) amber from San Just (Spain): implications for palaeoenvironmental and palaeoecological studies.
dc.creator.none.fl_str_mv Dal Corso, Jacopo
Roghi, Guido
Ragazzi, Eugenio
Angelini, I.
Giraetta, A.
Soriano, C.
Delclòs Martínez, Xavier
Jenkyns, Hugh C.
author Dal Corso, Jacopo
author_facet Dal Corso, Jacopo
Roghi, Guido
Ragazzi, Eugenio
Angelini, I.
Giraetta, A.
Soriano, C.
Delclòs Martínez, Xavier
Jenkyns, Hugh C.
author_role author
author2 Roghi, Guido
Ragazzi, Eugenio
Angelini, I.
Giraetta, A.
Soriano, C.
Delclòs Martínez, Xavier
Jenkyns, Hugh C.
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ambre
Paleoecologia
Paleoclimatologia
Espanya
Amber
Paleoecology
Paleoclimatology
Spain
topic Ambre
Paleoecologia
Paleoclimatologia
Espanya
Amber
Paleoecology
Paleoclimatology
Spain
description Amber from a Lower Cretaceous outcrop at San Just, located in the Eastern Iberian Peninsula (Escucha Formation, Maestrat Basin), was investigated to evaluate its physico-chemical properties. Thermogravimetric (TG) and Differential Thermogravimetric (DTG) analyses, infra-red spectroscopy, elemental and C-isotope analyses were performed. Physico-chemical differences between the internal light nuclei and the peripheral darker portions of San Just amber can be attributed to processes of diagenetic alteration that preferentially took place in the external amber border colonized by microorganisms (fungi or bacteria) when the resin was still liquid or slightly polymerized. δ13Camber values of different pieces of the same sample, from the nucleus to the external part, are remarkably homogeneous, as are δ13Camber values of the darker peripheral portions and lighter inner parts of the same samples. Hence, neither invasive microorganisms, nor diagenetic alteration, changed the bulk isotopic composition of the amber. δ13C values of different amber samples range from -21.1 to -24 , as expected for C3 plant-derived material. C-isotope analysis, coupled to palaeobotanical, TG and DTG data and infra-red spectra, suggests that San Just amber was exuded by only one conifer species, belonging to either the Cheirolepidiaceae or Aracauriaceae, coniferous families probably living under stable palaeoenvironmental and palaeoecological conditions.
publishDate 2013
dc.date.none.fl_str_mv 2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/49189
url https://hdl.handle.net/2445/49189
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: http://dx.doi.org/10.1344/105.000001871
Geologica Acta, 2013, vol. 11, num. 3, p. 359-370
http://dx.doi.org/10.1344/105.000001871
dc.rights.none.fl_str_mv (c) Dal Corso, J. et al., 2013
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Dal Corso, J. et al., 2013
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv (UB). (ICTJA). (IDEA). (UAB). (CSIC)
publisher.none.fl_str_mv (UB). (ICTJA). (IDEA). (UAB). (CSIC)
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,198674

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