Rare earth element geochemistry of outcrop and core samples from the Marcellus Shale

Geochemical Transactions

Research Article

Athanasios K Karamalidis¹  Clinton W Noack¹  John Stegmeier²  J Alexandra Hakala³  Jinesh C Jain⁴ 

[1] Department of Civil and Environmental Engineering, Carnegie Mellon University, PH 118L, 15213, Pittsburgh, PA, USA;Department of Civil and Environmental Engineering, Carnegie Mellon University, PH 118L, 15213, Pittsburgh, PA, USA;Center for Environmental Implications of Nanotechnology (CEINT), Durham, USA;National Energy Technology Laboratory, 15236, Pittsburgh, PA, USA;URS, Washington Division, National Energy Technology Laboratory, 15236, Pittsburgh, PA, USA;

关键词: Marcellus Shale;    Rare earth elements;    Material characterization;    ICP-MS;    X-ray diffraction;    Brine management;    Waste disposal;   

DOI  :  10.1186/s12932-015-0022-4

 received in 2015-01-13, accepted in 2015-06-03,  发布年份 2015

来源: Springer

【 摘 要 】

In this work, the geochemistry of the rare earth elements (REE) was studied in eleven outcrop samples and six, depth-interval samples of a core from the Marcellus Shale. The REE are classically applied analytes for investigating depositional environments and inferring geochemical processes, making them of interest as potential, naturally occurring indicators of fluid sources as well as indicators of geochemical processes in solid waste disposal. However, little is known of the REE occurrence in the Marcellus Shale or its produced waters, and this study represents one of the first, thorough characterizations of the REE in the Marcellus Shale. In these samples, the abundance of REE and the fractionation of REE profiles were correlated with different mineral components of the shale. Namely, samples with a larger clay component were inferred to have higher absolute concentrations of REE but have less distinctive patterns. Conversely, samples with larger carbonate fractions exhibited a greater degree of fractionation, albeit with lower total abundance. Further study is necessary to determine release mechanisms, as well as REE fate-and-transport, however these results have implications for future brine and solid waste management applications.

【 授权许可】

CC BY   
© Noack et al. 2015

【 图 表 】

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