Release of uranium from rock matrix: A record of glacial meltwater intrusions?

Kari Rasilainen; Juhani Suksi; Timo Ruskeeniemi; Petteri Pitkänen; Antti Poteri

doi:10.1016/S0169-7722(02)00132-8

Release of uranium from rock matrix: A record of glacial meltwater intrusions?

Kari Rasilainen^*
, Juhani Suksi
, Timo Ruskeeniemi
, Petteri Pitkänen
, Antti Poteri

^*Corresponding author for this work

University of Helsinki
Geological Survey of Finland (GTK)
VTT (former employee or external)

Research output: Contribution to journal › Article › Scientific › peer-review

9 Citations (Scopus)

Abstract

Uranium release observed in a rock matrix around water-carrying fractures was studied using U-series disequilibrium (USD) modelling and mass balance calculations. Several release scenarios were tested, with specific attention to the glacial aspects. The release appears to have occurred in two or three violent episodes during the last 300 ky. A release after the last glaciation can be excluded on mass flow grounds. Continuous release for more than 300 ky can be excluded on radioactive disequilibrium grounds. Repeated inflows of oxic glacial meltwater seem to have triggered the release episodes.

Original language	English
Pages (from-to)	235-246
Journal	Journal of Contaminant Hydrology
Volume	61
Issue number	1-4
DOIs	https://doi.org/10.1016/S0169-7722(02)00132-8
Publication status	Published - 2003
MoE publication type	A1 Journal article-refereed

Keywords

uranium
uranium migration
U-series disequilibrium
glaciation
nuclear waste disposal
nuclear waste management

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10.1016/S0169-7722(02)00132-8

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title = "Release of uranium from rock matrix: A record of glacial meltwater intrusions?",

abstract = "Uranium release observed in a rock matrix around water-carrying fractures was studied using U-series disequilibrium (USD) modelling and mass balance calculations. Several release scenarios were tested, with specific attention to the glacial aspects. The release appears to have occurred in two or three violent episodes during the last 300 ky. A release after the last glaciation can be excluded on mass flow grounds. Continuous release for more than 300 ky can be excluded on radioactive disequilibrium grounds. Repeated inflows of oxic glacial meltwater seem to have triggered the release episodes.",

keywords = "uranium, uranium migration, U-series disequilibrium, glaciation, nuclear waste disposal, nuclear waste management",

author = "Kari Rasilainen and Juhani Suksi and Timo Ruskeeniemi and Petteri Pitk{\"a}nen and Antti Poteri",

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T2 - A record of glacial meltwater intrusions?

AU - Rasilainen, Kari

AU - Suksi, Juhani

AU - Ruskeeniemi, Timo

AU - Pitkänen, Petteri

AU - Poteri, Antti

PY - 2003

Y1 - 2003

N2 - Uranium release observed in a rock matrix around water-carrying fractures was studied using U-series disequilibrium (USD) modelling and mass balance calculations. Several release scenarios were tested, with specific attention to the glacial aspects. The release appears to have occurred in two or three violent episodes during the last 300 ky. A release after the last glaciation can be excluded on mass flow grounds. Continuous release for more than 300 ky can be excluded on radioactive disequilibrium grounds. Repeated inflows of oxic glacial meltwater seem to have triggered the release episodes.

AB - Uranium release observed in a rock matrix around water-carrying fractures was studied using U-series disequilibrium (USD) modelling and mass balance calculations. Several release scenarios were tested, with specific attention to the glacial aspects. The release appears to have occurred in two or three violent episodes during the last 300 ky. A release after the last glaciation can be excluded on mass flow grounds. Continuous release for more than 300 ky can be excluded on radioactive disequilibrium grounds. Repeated inflows of oxic glacial meltwater seem to have triggered the release episodes.

KW - uranium

KW - uranium migration

KW - U-series disequilibrium

KW - glaciation

KW - nuclear waste disposal

KW - nuclear waste management

U2 - 10.1016/S0169-7722(02)00132-8

DO - 10.1016/S0169-7722(02)00132-8

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JO - Journal of Contaminant Hydrology

JF - Journal of Contaminant Hydrology

IS - 1-4

ER -

Release of uranium from rock matrix: A record of glacial meltwater intrusions?

Abstract

Keywords

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