Palynofacies
In order to remove the carbonates from the sediments and prepare the palynofacies, a 10 gm sample was treated with 10% HCl. Following three to four rounds of washing with distilled water, the residual material was treated with a 40% HF solution to dissolve the silicates. After thoroughly washing and sieving the samples using a 20-micron sieve, polyvinyl alcohol was used to produce strewn slides, which were subsequently mounted with Canada balsam (Combaz, 1964; Traverse, 1994; Tyson, 1995; Batten, 1996) and scanned under an Olympus BH-2 microscope and photographs captured with a DP-25 camera on 200X/400X/1000X. The palynofacies recovered were grouped into three broad categories: opaque phytoclasts (degraded and charcoal organic matter (OM), degraded brown OM, Structured OM), palynomorphs (viz., pollen/spore, algal/fungal remains, grass remains, Zoomorphs) and amorphous OM using the published literature (Traverse, 1994; Tyson, 1995; Sebag et al., 2006; Prasad et al., 2013; Sridhar et al., 2020). Along with the palynofacies, ratio of various palynofacies such as degraded charcoal (Dc), burnt charcoal (Bc), cuticle (C), and tracheid (T) have been carried on the frequency data to provide better insight into the transport and degradation of organic matter.