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Updated: Sep 17, 2025

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides

Separation of Uranium and Thorium for 230Th-U Dating of Submarine Hydrothermal Sulfides

Published on: May 20, 2019

²¹⁰Pb-based dating models for recent sediments. A review.

José M Abril-Hernández¹

¹Departamento de Física Aplicada I, ETSI Agronómica, Universidad de Sevilla, 41004, Sevilla, Spain.

Journal of Environmental Radioactivity

|July 3, 2025

Summary

This summary is machine-generated.

Lead-210 (²¹⁰Pb) dating offers precise age determination in aquatic sediments. This review provides updated models and understanding to enhance the reliability of ²¹⁰Pb dating applications in environmental studies.

Keywords:

(210)Pb-based models (210)Pb-dating Aquatic sediments Polyphasic porous media Sedimentation rates

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Published on: August 2, 2021

Area of Science:

Geochronology
Environmental Science
Geochemistry

Background:

The ²¹⁰Pb dating method is crucial for determining ages in recent aquatic sediments at centennial scales.
It supports diverse environmental studies, but requires models to constrain chronologies based on sedimentary conditions.
Numerous models have evolved over decades, incorporating new concepts like model errors and kinetic reactive transport.

Purpose of the Study:

To provide a comprehensive review of the ²¹⁰Pb dating method.
To offer users updated tools and understanding for improved application reliability.
To classify models based on sedimentary system assumptions and present new theoretical insights.

Main Methods:

Review and classification of approximately thirty ²¹⁰Pb dating models based on their assumptions.
Revisiting theories of early compaction and saturated porous media transport.
Analyzing empirical evidence on natural variability in mass flows and initial activity concentrations.

Main Results:

Models are categorized by their assumptions regarding sedimentary systems.
Enhanced understanding of tracer deposition pathways through physical and kinetic reactive transport.
Discussion of models solvable analytically versus numerically, supported by case studies.

Conclusions:

The review offers a renewed perspective on ²¹⁰Pb dating practices.
Updated tools and theoretical frameworks are provided to enhance dating reliability.
The study emphasizes the importance of model selection and understanding sedimentary processes for accurate dating.