Contributors:Di Chen, Xiongqi Pang, Lingjian Meng, Guoyong Liu, Hong Pang et al
This research data are the data using in the paper, including three sheets. Sheet 1 shows the data of buried depth and lithological characters of shale sample, the Total Organic Carbon content. Sheet 2 shows the data of organic petrographic examinations and maceral composition chloroform extraction results. Sheet 3 shows the biomarkers and their combination by using gas chromatography (GC) and GC-mass spectrometry (GC-MS). It costs 21 months to take samples and conduct geochemical tests. All the expenditure were funded and supported by the National Science and Technology Major Project of the Ministry of Science and Technology of China (2016ZX05006-006-001). The PetroChina Jidong Oilfield Company provided great support on the core sampling and experiments in this study.
To analyze the surface water quality of the area, we begin by identifying the sub-watersheds using Survey of India (SOI) Topographic Maps of 1:50,000 scale – 57 H5, 57 H6, 57 H7, 57 H9, 57 H10, 57 H11. Based on the drainage features of the area, the study area is demarcated into six sub-watersheds and named accordingly (Table 1 in the article). Drainage map, Geology map, Contour map, and Digital Elevation Model (DEM) map are prepared using RS and GIS. Once the sub-watersheds are demarcated, surface water samples within these sub-watersheds are collected for further analysis as explained in the sections below. 30 samples were collected over a study period of two years covering three prominent seasons of pre-monsoon, monsoon, and post-monsoon periods (Fig. 5, 6 in the article). These samples were then subjected to various physical, chemical, and bacteriological tests such as pH, temp., DO, BOD, etc. (Bureau of Indian Standards: Public Safety Standards of the Republic of India: Chemical: Environmental Protection and Waste Management) to ascertain its usage for domestic purposes as well as for agricultural activities.