Table 4.

Detailed geological profile of Small Research Polygon as per borehole A0 [4], with representative physical parameters of the strata.

	Depth (m)	Type of Rock	${\mathit{\lambda }}_{\mathit{LAB}}$ (W m${}^{-1}$K${}^{-1}$)	${\mathit{C}}_{\mathit{V}}$ (kJm${}^{-3}$K${}^{-1}$)	$\mathit{\alpha }$ (m${}^2$s${}^{-1}$)	${\mathit{\lambda }}_{\mathit{TRT}}$ (W m${}^{-1}$K${}^{-1}$)
Quar- ternary	0.0–2.5	Anthropogenic backfill	1.31–2.43	2.1–2.3	$7.56\times {10}^{-7}$	2.4
	2.5–6.0	Claystone
	6.0–7.0	Sandstone
	7.0–8.0	Clayey sandstone
	8.0–16.0	Claystone
Miocene	16.0–22.0	Sandstone	1.88	-
	22.0–29.0	Sandy claystone
	29.0–113.0	Claystone
Carbo- niferous	113.0–126.0	Siltstone	Siltstone: 1.85 Sandstone: 2.59	Siltstone: 1.71 Sandstone: 1.91
	126.0–128.0	Silty sandstone
	128.0–130.0	Siltstone
	130.0–131.0	Silty sandstone
	131.0–137.0	Siltstone
	137.0–141.0	Silty sandstone
	141.0–160.0	Siltstone