000127690 001__ 127690
000127690 005__ 20241125101157.0
000127690 0247_ $$2doi$$a10.1016/j.cretres.2023.105632
000127690 0248_ $$2sideral$$a134829
000127690 037__ $$aART-2023-134829
000127690 041__ $$aeng
000127690 100__ $$aCoimbra, Rute
000127690 245__ $$aEvaluating and comparing geochemical sampling protocols in dinosaur eggshells: refining Cretaceous ecosystem research
000127690 260__ $$c2023
000127690 5060_ $$aAccess copy available to the general public$$fUnrestricted
000127690 5203_ $$aThe geochemical signatures of dinosaur eggshells represent well-established proxies in paleoenvironmental and paleobiological research. The variable sampling procedures reported in the literature, however, deserve attention. In order to evaluate the impact of different sampling methodologies on carbon and oxygen isotope and elemental concentrations, grinding was contrasted with drilling to extract powder samples from eggshell fragments collected at several locations. Eggshell data were further contrasted with surface materials, encasing matrix and compared with independent proxies using petrographic and elemental techniques. Iron and manganese elemental concentrations revealed an enrichment sequence depending on the sampling strategy for the same eggshell fragment. This pattern can be mistaken for a variable state of preservation. In contrast, carbon and oxygen isotope values exhibited only subtle differences and lacked clear trends. This suggests that isotope data are less susceptible to different methodological approaches. It is shown that drilling offers a wider range of possibilities compared to grinding (e.g., faster and less destructive). Additionally, drilled powder samples can confidently be used for elemental and isotope analysis, excluding contamination, thus providing a more accurate set of proxy data from eggshell archives.
000127690 536__ $$9info:eu-repo/grantAgreement/ES/DGA-FEDER/E18 Aragosaurus-Recursos Geológicos y Paleoambientes$$9info:eu-repo/grantAgreement/ES/MICINN/FJCI-2020-044561-I$$9info:eu-repo/grantAgreement/ES/MICINN/PLEC2021-008203/AEI/10.13039/501100011033$$9info:eu-repo/grantAgreement/ES/MICINN/RYC2021-034473-I$$9info:eu-repo/grantAgreement/ES/NextGenerationEU/PRTR
000127690 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000127690 590__ $$a1.9$$b2023
000127690 592__ $$a0.734$$b2023
000127690 591__ $$aPALEONTOLOGY$$b12 / 57 = 0.211$$c2023$$dQ1$$eT1
000127690 593__ $$aPaleontology$$c2023$$dQ1
000127690 591__ $$aGEOLOGY$$b11 / 61 = 0.18$$c2023$$dQ1$$eT1
000127690 594__ $$a4.1$$b2023
000127690 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000127690 700__ $$0(orcid)0000-0002-7210-1033$$aMoreno-Azanza, Miguel$$uUniversidad de Zaragoza
000127690 700__ $$0(orcid)0000-0003-0900-1440$$aEzquerro, Lope$$uUniversidad de Zaragoza
000127690 700__ $$0(orcid)0000-0002-2882-6061$$aNúñez-Lahuerta, Carmen
000127690 700__ $$0(orcid)0000-0002-8427-6199$$aGasca, José Manuel
000127690 700__ $$aImmenhauser, Adrián
000127690 700__ $$aMateus, Octávio
000127690 700__ $$aRocha, Fernando
000127690 7102_ $$12000$$2655$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Paleontología
000127690 773__ $$g151 (2023), 105632 [10 pp.]$$pCretac. res.$$tCretaceous Research$$x0195-6671
000127690 8564_ $$s2869510$$uhttps://zaguan.unizar.es/record/127690/files/texto_completo.pdf$$yVersión publicada
000127690 8564_ $$s2636841$$uhttps://zaguan.unizar.es/record/127690/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000127690 909CO $$ooai:zaguan.unizar.es:127690$$particulos$$pdriver
000127690 951__ $$a2024-11-22-12:09:48
000127690 980__ $$aARTICLE