Strategy for Developing and Calibrating Shale and Mudstone Chemostratigraphies Using Handheld X-Ray Fluorescence Units and Its Use on an Automated Core Scanner

摘要

The poster illustrates the approach used by Harry Rowe, University of Texas at Austin, to establish a dedicated calibration for shale on a pXRF unit to enable chemostratigraphy. Starting from the selection of representative in type reference samples, developing a suitable sample preparation to the calibration and matrix correction, we will step through the process. The method was validated against ICP and WD XRF and has been previously published. The method is adapted using a custom developed accessory which allows the automated movement of the core, including additional imaging and the use of He as purge gas. This allows the quantification of Na, and also increases the sensitivity for Mg, Al, and Si.