000063780 001__ 63780
000063780 005__ 20171221155155.0
000063780 037__ $$aTAZ-TFG-2017-4728
000063780 041__ $$aspa
000063780 1001_ $$aMARTIN ARNAU, RAUL
000063780 24200 $$aCyclostratigraphy through the MPBE event (upper Selandian) at Zumaia (Gipuzkoa) with plantonic foraminifera and clay inerals
000063780 24500 $$aCicloestratigrafía en torno al evento MPBE (Selandiense superior) en Zumaia (Gipuzkoa) con foraminíferos planctónicos y minerales de la arcilla
000063780 260__ $$aZaragoza$$bUniversidad de Zaragoza$$c2017
000063780 506__ $$aby-nc-sa$$bCreative Commons$$c3.0$$uhttp://creativecommons.org/licenses/by-nc-sa/3.0/
000063780 520__ $$aThis work includes a quantitative study of planktonic foraminifera at the genus level and a semiquantitative study of clay minerals of the upper Selandian at the Zumaia section (Gipuzkoa). The objective is to analyze the paleoenvironmental and paleoclimatic evolution across the horizon corresponding to the hyperthermal event called Mid Paleocene Biotic Event (MPBE). For the planktonic foraminifera study, a total of 20 samples were analyzed which were prepared by the classic washing techniques. For the paleoclimatic reconstruction, the index C/F was used, which marks the proportion of tropical-subtropical genera. For the mineralogical analysis, 12 of these samples were studied by means of the X-ray diffraction technique of the total sample and the clay fraction (<2µm). The curves of the index C/F and clay mineral abundance indicate cyclical variations compatible with the Milankovitch cycles (of precession and eccentricity). The more marly beds exhibit a greater abundance of tropical-subtropical genera and chlorites, suggesting warmer periods of insolation maximum. The horizon of the MPBE represents an absolute maximum in the index C/F, but does not reflect a significant event different from the rest of the marly levels within the precession cycles identified at Zumaia.
000063780 521__ $$aGraduado en Geología
000063780 540__ $$aDerechos regulados por licencia Creative Commons
000063780 700__ $$aArenillas Sierra, Ignacio$$edir.
000063780 700__ $$aBauluz Lázaro, Blanca$$edir.
000063780 7102_ $$aUniversidad de Zaragoza$$bCiencias de la Tierra$$cPaleontología
000063780 8560_ $$f670977@celes.unizar.es
000063780 8564_ $$s1383788$$uhttps://zaguan.unizar.es/record/63780/files/TAZ-TFG-2017-4728.pdf$$yMemoria (spa)
000063780 909CO $$ooai:zaguan.unizar.es:63780$$pdriver$$ptrabajos-fin-grado
000063780 950__ $$a
000063780 951__ $$adeposita:2017-12-21
000063780 980__ $$aTAZ$$bTFG$$cCIEN