Geological cycling of potassium and the K isotopic response: insights from loess and shales
Abstract
Shales are a major sink for K into seawater delivered from continental weathering, and are potential recorders of K cycling. High precision K isotope analyses reveal a > 0.6 ‰ variation in δ41K values (41K/39K relative to NIST SRM 3141a) from a set of well characterized post-Archean Australian shale (PAAS) samples. By contrast, loess samples have relatively homogenous δ41K values (− 0.5 ± 0.1 ‰), which may represent the average K composition of...
Paper Details
Title
Geological cycling of potassium and the K isotopic response: insights from loess and shales
Published Date
May 7, 2019
Journal
Volume
38
Issue
4
Pages
508 - 516
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