Investigating high permeable zones in non-volcanic geothermal systems using lineament analysis and fault fracture density (FFD): northern Konawe Regency, Indonesia

Geothermal Energy

Science – Society – Technology

Table 1 Summary of fracture measurements of all fractures observed in the different study localities

Location	Fracture density (m⁻¹)	Type	Relative fracture orientation	Number of fractures	Average fracture aperture (mm)
GT-1	–	–	–	–	–
GT-2	NM	CV	NNE–SSW	32	2.59
GT-3	–	–	–	–	–
		OF	N–S	29	3.71
GT-4	16.21	SV	NW–SE	18	20.36
			NNE–SSW	53	11.88
GT-5	7.8	SV	NNW–SSE	25	8.6
GT-6	4.63	SF	NNW–SSE	22	–
GT-7	NM	OF	N–S	18	18.56
		SV	NNE–SSW	41	28.22
GT-8	7.5	SF	NNW–SSE and NNE–SSW	50	–

GT ground-truthing location, CV carbonate vein, OF open fracture, SV silica vein