Research / 2019 / Article / Fig 3

Research Article

Clay Mineral and Geochemical Proxies for Intense Climate Change in the Permian Gondwana Rock Record from Eastern India

Figure 3

A few representative X-ray diffractograms of clay minerals of the air-dried, glycolated, and heated (380°C) samples (<2 μm fraction) of the analyzed sediments. UT: untreated; GL: glycolated; HT: heated; I: illite; I/S: illite/smectite; C: chlorite; C/S: chlorite/smectite; K: kaolinite; Q: quartz; K-f: K-feldspar; PI: plagioclase. Note that only the most important peaks used in the mineral identification are labeled.