2026-10-11T21:02:35Z https://api.figshare.com/v2/oai

oai:figshare.com:article/32634525 2026-10-01T16:54:45Z portal_1172 item_type_8 month_year_10_2026

Bayesian improvements to ²¹⁰<i>Pb</i> age-depth models Marco Antonio Aquino-López (24166398) PUREID: 453734036 This work explores and improves the use of ²¹⁰<i>Pb</i> (lead-210) for constructing age-depth models of sedimentary deposits. It first discusses the current dating models for both ²¹⁰<i>Pb</i> and radiocarbon, followed by a review of the literature to observe calculation and reporting practices as well as examples of ²¹⁰<i>Pb</i> dating from the literature. After we observe how practitioners treat ²¹⁰<i>Pb</i> data, simulations are created to analyse the accuracy of current ²¹⁰<i>Pb</i> dating models. These simulations show a low accuracy by the current ²¹⁰<i>Pb</i> dating model, and this motivated the construction of a new approach for age-depth models.<br><br>The new and improved ²¹⁰<i>Pb</i> age-depth model was tested using both data from real sediment cores and simulated ones. These experiments show that this approach has a better accuracy than the current ²¹⁰<i>Pb</i> dating models. Also, it is based on a Bayesian approach, which allowed for an easy integration of additional dating sources. Radiocarbon was used to obtain an integrated chronology. Simulations show that this new approach provides an easier integration of radiocarbon and ²¹⁰<i>Pb</i> data on top of providing more accurate chronologies with better estimates of chronological precision.<br><br> 2026-10-01T16:54:45Z Text Thesis 10.17034/32634525.v1 https://figshare.com/articles/thesis/Bayesian_improvements_to_sup_210_sup_i_Pb_i_age-depth_models/32634525 All Rights Reserved