Diagenesis and very low grade metamorphism in a 7,012 m-deep well Hongcan 1, eastern Tibetan plateau

Swiss Journal of Geosciences

Table 2 Geo-thermometric data from part core samples

No.	Depth (m)	T ^a_(Cc–Do) (°C)^d	T ^b_(Ch) (°C)^d	T ^c_h (°C)
HW-462	0			184, 189, 188
HW-447	469.4			129, 118, 135, 138, 169, 179, 181, 157
HW-458	1949			154, 185
HW-589	4375.1	264
HW-591	4945.2	316
HW-698	5847.5	293
HW-699	6006		213,237
HW-732	6073.2			179, 159, 170, 150, *287, 163, 236, 235, 218, 239*
HW-733	6543.7		328, 348, 317	133, 139, 152, 157, 177, 174, 174, 235, *270, 273, 230, 249*, 156, 176, 161, 192, 166
HW-734	7011.2			232, 223, 235

^aTemperature evaluated from calcite geobarothermometer, 3 kbar pressure condition has been considered according to b cell geo-barometry of K-white mica and the erosion and depth of Triassic in the well, see text for detail
^bTemperature evaluated from chlorite chemical geothermometer (Inoue et al. 2009)
^cHomogenization temperature of fluid inclusion in quartz
^dCalculated from EMPA data