Exponential trends in flowback chemistry from a hydraulically stimulated deep geothermal borehole in granite; Pohang, South KoreaDavid Banks, Neil Burnside, Rob Westaway, Günter Zimmermann and Hannes HofmannE3S Web Conf., 98 (2019) 08001DOI: https://doi.org/10.1051/e3sconf/20199808001