Novel approach for reconstructing late Holocene climate variability in Brazil: stable carbon and hydrogen isotopes of N-alkanes from bat guano in the Caverna do Urubu (Nordeste) - Etourneau, Johan; Utida, Giselle; Bouloubassi, Ioanna; Sifeddine, A.; Cruz, Francisco W (Congresso da Associação Brasileira de Estudos do Quaternário, 2013)