Zobrazeno 1 - 10
of 58
pro vyhledávání: '"Simon M.F. Sheppard"'
Autor:
Shilu Wang, Simon M.F. Sheppard, Guang-Shen Liu, Cong-Qiang Liu, Faxiang Tao, Xue-Tian Leng, Wen-Bir Xu, Anne-Marie Aucour
Publikováno v:
Chinese Journal of Chemistry. 19:1089-1096
Traditionally-suggested combustion time of 1 h at 550°C) with the sealed-tube combustion method for determining the 13C/ 12C ratio of cellulose nitrate or other nitrogen-containing components could produce large negative deviation up to 1°. Three t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da7070c9b17565b1f51e5e27382317f5
https://doi.org/10.1002/cjoc.20010191115
https://doi.org/10.1002/cjoc.20010191115
Publikováno v:
Palaeogeography, Palaeoclimatology, Palaeoecology. 257:462-473
The 13 C/ 12 C ratios of leaves of the conifer morphotype Frenelopsis were measured to decipher the influences of water and salt stress on stomatal density (SD), epidermal cell density (ECD) and stomatal index (SI). Three morphospecies were analyzed:
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ec1dcaf79f83b65c5ce92d59f561201e
https://doi.org/10.1016/j.palaeo.2007.10.027
https://doi.org/10.1016/j.palaeo.2007.10.027
Autor:
Jean-Pierre Lorand, Christophe Renac, André Giret, Michel Grégoire, Guillaume Delpech, Simon M.F. Sheppard, Jean-Yves Cottin, Bertrand Moine, Suzanne Y. O'Reilly
Publikováno v:
Lithos. 75:239-252
Some mantle-derived Kerguelen harzburgite and dunite xenoliths have bulk-rock and mineral trace element compositions that provide evidence of carbonatitic metasomatism similar to that described in some continental and other oceanic settings. Rare xen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5179ef9fd87ad5acaf6aab07a38a0fbd
https://doi.org/10.1016/j.lithos.2003.12.019
https://doi.org/10.1016/j.lithos.2003.12.019
Publikováno v:
Chemical Geology. 207:91-100
This study investigates the controls on the stable isotope composition of shell nacreous layer of a modern Nautilus macromphalus from New Caledonia. Closely spaced samples were taken both along growth lines (isochrons) and growth axis (time series).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3c5de36c22580c81c7a40d078f27fc6
https://doi.org/10.1016/j.chemgeo.2004.02.006
https://doi.org/10.1016/j.chemgeo.2004.02.006
Publikováno v:
Geochimica et Cosmochimica Acta. 68:2245-2258
Intra-tooth δ18O variations within the carbonate (δ18Oc) and phosphate (δ18Op) components of tooth apatite were measured for Miocene and Pliocene hypsodont mammals from Afghanistan, Greece and Chad in order to evaluate the resistance of enamel to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c025b6231b91cc6b00e2bd0e187f1e3b
https://doi.org/10.1016/j.gca.2003.11.009
https://doi.org/10.1016/j.gca.2003.11.009
Publikováno v:
Limnology and Oceanography. 48:2186-2193
The relationship between the δ13C of dissolved inorganic carbon (DIC) and modern mollusk aragonite from rivers was calibrated for the purpose of reconstructing DIC paleochemistry from the shell record. The δ13C values of aragonitic bivalves (Dreiss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2045054e7143dfa55b4c61fe7082262f
https://doi.org/10.4319/lo.2003.48.6.2186
https://doi.org/10.4319/lo.2003.48.6.2186
Autor:
Stephanie Picard, Fabrice Gaumet, Christophe Lécuyer, Jean-Pierre Garcia, Mathieu Rousseau, François Atrops, Gilles Dromart, Simon M.F. Sheppard
Publikováno v:
Scopus-Elsevier
A compilation of new and published stratigraphic, paleontological and geochemical data is used to detect the reciprocal influences of carbon cycling and global environmental changes in the Jurassic. A major perturbation of the surface carbon cycling
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1cbd8109de7e33569ff1cd49fe21ad6
https://doi.org/10.2475/ajs.303.8.667
https://doi.org/10.2475/ajs.303.8.667
Autor:
Christophe Lécuyer, Gilles Dromart, François Atrops, Jean-Pierre Garcia, Simon M.F. Sheppard, S. Picard
Publikováno v:
Earth and Planetary Science Letters. 213:205-220
A detailed record of sea surface temperatures in the Northern Hemisphere based on migration of marine invertebrate fauna (ammonites) and isotopic thermometry (δ18O values of shark tooth enamel) indicates a severe cooling at the Middle–Late Jurassi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ebd07858f99b6511b26d2ee9470e118b
https://doi.org/10.1016/s0012-821x(03)00287-5
https://doi.org/10.1016/s0012-821x(03)00287-5
Autor:
Patricia Moreira-Turcq, Patrick Seyler, Simon M.F. Sheppard, Faxiang Tao, Marc F. Benedetti, Anne-Marie Aucour
Publikováno v:
Chemical Geology. 197:271-285
We studied the changes in major elements and organic carbon concentrations during the initial stage of the mixing of the black (Rio Negro) and the White (Rio Solimoes) waters in the Amazon River basin to understand the geochemical processes that coul
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce5968e5e8730a0bea0e8052b99f9228
https://doi.org/10.1016/s0009-2541(02)00398-4
https://doi.org/10.1016/s0009-2541(02)00398-4
Autor:
Simon M.F. Sheppard, Jean-Alix Barrat, Jean-Pierre Garcia, Gilles Dromart, Stephanie Picard, Christophe Lécuyer
Publikováno v:
Chemical Geology. 186:1-16
The rare earth element (REE) chemistry of Jurassic shelf seawater from western Europe (Anglo-Paris Basin) was investigated by analyzing the fish and reptile teeth deposited in shallow to deeper water (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84449c1bde324e81ca81cf59e66cf53c
https://doi.org/10.1016/s0009-2541(01)00424-7
https://doi.org/10.1016/s0009-2541(01)00424-7