An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer
Comunicación oral presentada presentado en el EGU General Assembly 2015, 12-17 April 2015, Vienna, Austria
Saved in:
| Main Authors: | , , , , |
|---|---|
| Other Authors: | |
| Format: | comunicación de congreso biblioteca |
| Language: | English |
| Published: |
European Geosciences Union
2015
|
| Online Access: | http://hdl.handle.net/10261/187826 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| id |
dig-irnas-es-10261-187826 |
|---|---|
| record_format |
koha |
| institution |
IRNAS ES |
| collection |
DSpace |
| country |
España |
| countrycode |
ES |
| component |
Bibliográfico |
| access |
En linea |
| databasecode |
dig-irnas-es |
| tag |
biblioteca |
| region |
Europa del Sur |
| libraryname |
Biblioteca del IRNAS España |
| language |
English |
| description |
Comunicación oral presentada presentado en el EGU General Assembly 2015, 12-17 April 2015, Vienna, Austria |
| author2 |
Ministerio de Economía y Competitividad (España) |
| author_facet |
Ministerio de Economía y Competitividad (España) González-Pérez, José Antonio Jiménez Morillo, N. T. Rosa Arranz, José M. de la Almendros Martín, Gonzalo González-Vila, Francisco Javier |
| format |
comunicación de congreso |
| author |
González-Pérez, José Antonio Jiménez Morillo, N. T. Rosa Arranz, José M. de la Almendros Martín, Gonzalo González-Vila, Francisco Javier |
| spellingShingle |
González-Pérez, José Antonio Jiménez Morillo, N. T. Rosa Arranz, José M. de la Almendros Martín, Gonzalo González-Vila, Francisco Javier An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer |
| author_sort |
González-Pérez, José Antonio |
| title |
An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer |
| title_short |
An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer |
| title_full |
An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer |
| title_fullStr |
An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer |
| title_full_unstemmed |
An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer |
| title_sort |
estimation of central iberian peninsula atmospheric δ13c and water δd in the upper cretaceous using pyrolysis compound specific isotopic analysis (py-csia) of a fossil conifer |
| publisher |
European Geosciences Union |
| publishDate |
2015 |
| url |
http://hdl.handle.net/10261/187826 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 |
| work_keys_str_mv |
AT gonzalezperezjoseantonio anestimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT jimenezmorillont anestimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT rosaarranzjosemdela anestimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT almendrosmartingonzalo anestimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT gonzalezvilafranciscojavier anestimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT gonzalezperezjoseantonio estimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT jimenezmorillont estimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT rosaarranzjosemdela estimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT almendrosmartingonzalo estimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer AT gonzalezvilafranciscojavier estimationofcentraliberianpeninsulaatmosphericd13candwaterddintheuppercretaceoususingpyrolysiscompoundspecificisotopicanalysispycsiaofafossilconifer |
| _version_ |
1777665030083313664 |
| spelling |
dig-irnas-es-10261-1878262019-09-27T10:31:53Z An estimation of Central Iberian Peninsula atmospheric δ13C and water δD in the Upper Cretaceous using pyrolysis compound specific isotopic analysis (Py-CSIA) of a fossil conifer González-Pérez, José Antonio Jiménez Morillo, N. T. Rosa Arranz, José M. de la Almendros Martín, Gonzalo González-Vila, Francisco Javier Ministerio de Economía y Competitividad (España) European Commission González-Pérez, José Antonio [0000-0001-7607-1444] Jiménez Morillo, N. T. [0000-0001-5746-1922] Rosa Arranz, José M. de la [0000-0003-2857-2345] Almendros Martín, Gonzalo [0000-0001-6794-9825] González-Vila, Francisco Javier [0000-0002-6320-539 Comunicación oral presentada presentado en el EGU General Assembly 2015, 12-17 April 2015, Vienna, Austria Frenelopsis is a frequently found genus of the Cretaceous floras adapted to dry, saline and in general to environmental conditions marked by severe water stress [1]. Stable isotope analysis of fossil organic materials can be used to infer palaeoenvironmental variables helpful to reconstruct plant paleohabitats [2]. In this study stable isotope analysis of organic fossil remains (FR) and humic fractions (FA, HA and humin) of Frenelopsis oligiostomata are studied in bulk (C, H, O, N IRMS) and in specific compounds released by pyrolysis (C, H, Py-CSIA). Well preserved F. oligiostomata fossils were handpicked from a limestone included in compacted marls from Upper Cretaceous (Senonian c. 72 Mya) in Guadalix de la Sierra (Madrid, Spain) [3]. The fossils were decarbonated with 6M HCl. Humic substances were extracted from finely ground fossil remains (FR) by successive treatments with 0.1M Na4P2O7 + NaOH [4]. The extract was acidified resulting into insoluble HA and soluble FA fractions. The HA and FA were purified as in [5] and [6] respectively. Bulk stable isotopic analysis (δ13C, δD, δ18O, δ15N IRMS) was done in an elemental micro-analyser coupled to a continuous flow Delta V Advantage isotope ratio mass spectrometer (IRMS). Pyrolysis compound specific isotopic analysis Py-CSIA (δ13C, δD): was done by coupling a double-shot pyrolyzer to a chromatograph connected to an IRMS. Structural features of specific peaks were inferred by comparing/matching mass spectra from conventional Py-GC/MS (data not shown) with Py-GC/IRMS chromatograms obtained using the same chromatographic conditions. Bulk C isotopic signature found for FR (-20.5±0.02 h was in accordance with previous studies [2, 7–9]. This heavy isotopic δ13C signature indicates a depleted stomatal conductance and paleoenvironmental growth conditions of water and salt stress. This is in line with the morphological and depositional characteristics [3] confirming that F. oligostomata was adapted to highly xeric and saline habitats being a component of salt-marsh vegetation. The values obtained for δD (-101.9±2.2 h, δ15N (10.7±0.2 h and δ18O (20.9±0.39 h lay within those previously reported for fossil floras [10] growing in warm environment and probably with very high evaporation rates. δ13C Py-CSIA was recorded for biogenic compound; polysaccharides, lipid series, lignin and degraded lignin compounds (alkyl benzenes and alkyl phenols) and for a S containing compounds probably with a diagenetic origin. In general δ13C Py-CSIA values were more depleted that the bulk ones and can be considered a better approach to the real plant δ13C value (c. -22 h. Considering that plant-air C fractionation in degraded lignin compounds for a C4 photosystem plant is c. ∆13C≈ 20.0 h [11] and a an extra fractionation (∆13C≈ −3.0 h due to the plant depleted stomatal conductance growing in extreme warm, saline and dry conditions, we estimate atmospheric δ13C value in the area during the Upper Cretaceous in c. δ13C = −5.3±0.2h ... Projects CGL2012-38655-C04-01 and CGL2008-04296 and fellowship BES-2013-062573 given by the Spanish Ministry for Economy and Competitiveness to N.T.J.M. Dr. J.M. R. is the recipient of a fellowship from the JAE-Doc subprogram financed by the CSIC and the European Social Fund. No 2019-08-07T12:18:17Z 2019-08-07T12:18:17Z 2015 comunicación de congreso http://purl.org/coar/resource_type/c_5794 Geophysical Research Abstracts Vol. 17, EGU2019-10953-1 (2015) http://hdl.handle.net/10261/187826 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/BES-2013-062573 Sí open European Geosciences Union |