Dating of Biogenic and Inorganic Carbonates Using 210Pb-226Ra Disequilibrium Method: A Review

Baskaran, Mark

doi:10.1007/978-3-642-10637-8_37

Cited by 9 publications

(2 citation statements)

References 88 publications

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“…One of the most fundamental steps in establishing a record of environmental change is to first derive an accurate geochronology. The geochronologies generated by 210 Pb analysis can resolve the very recent past (last 100-200 years), with total (1s) uncertainties varying from just under 1 year to around a decade (Baskaran 2011). However, 210 Pb geochronologies are not without inherent problems and uncertainties (Robbins and Edgington 1975;von Gunten and Moser 1993).…”

Section: Discussionmentioning

confidence: 99%

210Pb Dating

Swarzenski

2014

Encyclopedia of Scientific Dating Methods

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Method of dating recent sediment deposition and accumulation using down-core profiles of shortlived radioactive 210 Pb. History Roughly 50 years ago, a small group of scientists from Belgium and the USA, trying to better constrain ice sheet accumulation rates, attempted to apply what was then known about environmental lead as a potential geochronometer. Thus Goldberg (1963) developed the first principles of the 210 Pb dating method, which was soon followed by a paper by Crozaz et al. (1964), who examined accumulation history of Antarctic snow using 210 Pb. Shortly thereafter, Koide et al. (1972, 1973) adapted this technique to unravel sediment deposition and accumulation records in deep-sea environments. Serendipitously, they chose to work in a deep basin off California, where an independent and robust age model had already been developed. Krishanswami et al. (1971) extended the use of this technique to lacustrine deposits to reconstruct depositional histories of lake sediment and, maybe more importantly, contaminant inputs and burial. Thus, the powerful tool for dating recent (up to about one century old) sediment deposits was established and soon widely adopted. Today almost all oceanographic or limnologic studies that address recent depositional reconstructions employ 210 Pb as one of several possible geochronometers (Andrews et al. 2009; Gale 2009; Baskaran 2011; Persson and Helms 2011). This entry presents a short overview of the principles of 210 Pb dating and provides a few examples that illustrate the utility of this tracer in contrasting depositional systems. Potential caveats and uncertainties (

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Section: Discussionmentioning

confidence: 99%

210Pb Dating

Swarzenski

2014

Encyclopedia of Scientific Dating Methods

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“…Therefore, other methods of quantifying total 210 Pb, such as alpha spectrometry and beta or liquid scintillation counting, have been suggested and tested (e.g. Ebaid and Khater, 2006;Jia and Torri, 2007;Zaborska et al, 2007;Baskaran, 2011b). 210 Pb concentration can be indirectly determined by alpha-ray spectrometry through its decay progeny 210 Po.…”

Section: Technical Aspects Regarding the Determination Of 210 Pb Exmentioning

confidence: 99%

Fallout 210Pb as a soil and sediment tracer in catchment sediment budget investigations: A review

Mabit

Benmansour

Abril

et al. 2014

Earth-Science Reviews

204

116

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Practical Guide to Measuring Wetland Carbon Pools and Fluxes

Bansal,

Creed,

Tangen

et al. 2023

Wetlands

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Wetlands cover a small portion of the world, but have disproportionate influence on global carbon (C) sequestration, carbon dioxide and methane emissions, and aquatic C fluxes. However, the underlying biogeochemical processes that affect wetland C pools and fluxes are complex and dynamic, making measurements of wetland C challenging. Over decades of research, many observational, experimental, and analytical approaches have been developed to understand and quantify pools and fluxes of wetland C. Sampling approaches range in their representation of wetland C from short to long timeframes and local to landscape spatial scales. This review summarizes common and cutting-edge methodological approaches for quantifying wetland C pools and fluxes. We first define each of the major C pools and fluxes and provide rationale for their importance to wetland C dynamics. For each approach, we clarify what component of wetland C is measured and its spatial and temporal representativeness and constraints. We describe practical considerations for each approach, such as where and when an approach is typically used, who can conduct the measurements (expertise, training requirements), and how approaches are conducted, including considerations on equipment complexity and costs. Finally, we review key covariates and ancillary measurements that enhance the interpretation of findings and facilitate model development. The protocols that we describe to measure soil, water, vegetation, and gases are also relevant for related disciplines such as ecology. Improved quality and consistency of data collection and reporting across studies will help reduce global uncertainties and develop management strategies to use wetlands as nature-based climate solutions.

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Dating of Biogenic and Inorganic Carbonates Using 210Pb-226Ra Disequilibrium Method: A Review

Cited by 9 publications

References 88 publications

210Pb Dating

210Pb Dating

Fallout 210Pb as a soil and sediment tracer in catchment sediment budget investigations: A review

Practical Guide to Measuring Wetland Carbon Pools and Fluxes

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