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Table 3 A comparison of the physical and elastic properties values for Waipapa greywacke samples (TTGW Taotaoroa Quarry; WAGW  Waotu Quarry) measured in this study [this study; McNamara et al. 2014) and Torlesse greywacke (this study (connected porosity); McNamara et al. 2014; Stewart 2007), Rotokawa andesite (Siratovich et al. 2012, 2014)

From: Physical property characterization of the Waipapa greywacke: an important geothermal reservoir basement rock in New Zealand

Property

TTGW (this study)

# of tests

WAGW

# of tests

Rotokawa andesite

# of tests

Tensile strength (MPa)

14.4–32.42

10

20.3–35.7

8

9.99–24.13

12

UCS (MPa)

205–384

10

301–310

2

60–211

22

Poisson’s ratio (ν)

0.19–0.54

10

0.28–0.29

2

0.09–0.34

22

Young’s modulus (\(E\)) (GPa)

54–85

10

65–70

2

20–44

22

Poisson’s ratio (\({\nu }_{\rm d}\))

0.28–0.30

3

0.13–0.23

22

Young’s modulus (\({E}_{\rm d}\)) (GPa)

80–84

3

25–46

22

Density (ρ) ( /cm–3)

2.727

3

2.71

2

2.49

22

Connected porosity (ɸ) (vol%)

1.035

17

 ~ 2

2

8.44

22

  1. Mean values are reported for density and connected porosity. Dynamic properties are identified in this table with the subscript “d” (\({E}_{\rm d}\) and \({\nu }_{\rm d}\))