Subglacial Lake Whillans (SLW), West Antarctica, is an active component of the subglacial hydrological network located beneath 800 m of ice.The fill and drain behavior of SLW leads to long (years to decades) water residence times relative to those in mountain glacier systems.Here, we present the aqueous geochemistry of the SLW water column and pore waters from a 38-cm-long sediment core.Stable isotopes indicate that the water is primarily sourced from basal-ice melt with a minor contribution from seawater that reaches a maximum of ~6% in pore water at the bottom of the sediment core.Silicate weathering products dominate the crustal (non-seawater) component of lake-and pore-water solutes, and there is evidence for cation exchange processes within the clay-rich lake sediments.The crustal solute component ranges from 6 meq L -1 in lake waters to 17 meq L -1 in the deepest pore waters.The porewater profiles of the major dissolved ions indicate a more concentrated solute source at depth (>38 cm).The combination of significant seawater and crustal components to SLW lake and sediment pore waters in concert with ion exchange processes result in a weathering regime that contrasts with other subglacial systems.The results also indicate cycling of marine water sourced from the sediments back to the ocean during lake drainage events.

Alexander B. Michaud

Mark L. Skidmore

Andrew C. Mitchell

Trista J. Vick-Majors

Carlo Barbante

Clara Turetta

Will vanGelder

John C. Priscu

Geology

自 1973 年出版以来，《地质学》的特点是每月快速出版约 23 篇经过评审的短篇（四页）论文。文章涵盖所有地球科学学科，包括新的调查和挑衅性话题。地球科学专业的地质学家和大学水平的学生使用这本广泛阅读的期刊来跟上科学研究的趋势。在线论坛部分促进了作者与读者的对话。在超大尺寸松散插页上包括彩色插图和偶尔的大幅面插图。

Since its inception in 1973, Geology has featured approximately 23 peer-reviewed short papers (four pages each) published rapidly each month. The articles cover all disciplines of Earth sciences, including new investigations and provocative topics. Geologists and university-level students in the Earth sciences widely read this journal to keep up with trends in scientific research. The online forum section facilitates dialogue between authors and readers. Color illustrations and occasional large-format illustrations are included on oversized loose inserts.

《Geology》自1973年创刊以来，每月快速出版约23篇经过同行评审的短篇论文（四页）。这些文章涵盖了所有地球科学领域，包括新的研究调查和具有挑战性的话题。地球科学专业的地质学家和大学生广泛阅读这本期刊，以跟踪科学研究的最新趋势。期刊的在线论坛部分促进了作者与读者之间的交流。此外，期刊还在超大尺寸的松散插页上包含彩色插图和偶尔的大幅面插图。

Category	Quartile
地球科学	1
地球科学, 地质学	1

Solute sources and geochemical processes in Subglacial Lake Whillans, West Antarctica

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