01997nab a2200217 4500 20260520000314.0 260224s2012 xxu Probabilistic correlation of single stratigraphic samples A generalized approach for biostratigraphic data feb. 2012 07/05/2012 ; 07/05/2012 9 p. ; 235-244 Transcripción del resumen del autor: Existing quantitative methods for biostratigraphic dating and correlation commonly ignore one of the key strengths of the microfossil record—relative abundance data. In this study, we present a maximum likelihood-based biostratigraphic method that demonstrates how microfossil abundance can be used in the stratigraphic placement of isolated samples. Precise correlation and dating of isolated paleontological samples is not possible with current methods, which are primarily intended for the alignment of longer stratigraphic sequences. In contrast, the probabilistic approach provided by likelihood analysis results in sample age estimates with defined confidence intervals. Therefore, all the uncertainties inherent in our age assessment (resulting from small sample sizes, incomplete sampling, imperfect knowledge of stratigraphic distributions, lack of taxonomic resolution of biostratigraphic data, and underlying environmental, paleogeographic, and sedimentologic processes) are explicit in our results. We conclude with a field test of the method, from data collected from an oil well from the Catatumbo Basin, Colombia, illustrating the use of our approach in a real-world case study and highlighting how our method could be generalized to a wide range of stratigraphic problems. 2 AAPG Bulletin 96 ARTICULO Punyasena, Surangi W. 52545 Jaramillo, Carlos 24084 Parra, Felipe de la 52546 Du, Yuelin 52547 187139 187139 0 0 0 0 254958 BAAB BAAB 2026-03-06 200059245 0 200059245 2026-03-06 00:16:51 2026-03-06 ARTICULO