Boron Isotope Fractionation in Soils at Shale Hills CZO | Zendy

Johanoireaux | Zendy; Jérôme Gaillardet | Zendy; Pamela Sullivan | Zendy; Susan L. Brantley | Zendy

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Boron Isotope Fractionation in Soils at Shale Hills CZO

Author(s) -

Johanoireaux,

Jérôme Gaillardet,

Pamela Sullivan,

Susan L. Brantley

Publication year - 2014

Publication title -

procedia earth and planetary science

Language(s) - English

Resource type - Journals

ISSN - 1878-5220

DOI - 10.1016/j.proeps.2014.08.024

Subject(s) - isotope fractionation , oil shale , geology , fractionation , weathering , bedrock , soil water , geochemistry , biogeochemical cycle , mass independent fractionation , dissolution , isotope , ridge , isotopes of boron , boron , equilibrium fractionation , organic matter , soil horizon , environmental chemistry , soil science , geomorphology , chemistry , paleontology , physics , organic chemistry , quantum mechanics

Isotope fractionation of many elements can fingerprint the biogeochemical, weathering and erosion processes that govern the evolution of the Critical Zone (CZ). This study investigates boron isotope fractionation in two soil profiles developed on the same shale bedrock at Shale Hills Critical Zone Observatory. The first soil profile, located at the valley floor, is isotopically similar to the bedrock and appears to have lost boron mostly through the loss of fine particles matter (clays) with no isotopic fractionation. The second soil profile, located at the ridge top appears to be more depleted in boron concentration and isotopically fractionated toward lower values, as expected from mineral dissolution followed by adsorption/co-precipitation processes

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