Table 3 Empirical fit of Eqs. (1) and (2) for the datasets having R of 1, 2, 4 and 9 at a strain rate of 5 × 10−4 s−1.

From: A comprehensive database of crystal-bearing magmas for the calibration of a rheological model

R

ϕ*

γ

δ

ξ

1

0.62

7.38

6.24

5.03E-04

2

0.49

3.30

7.36

2.74E-04

4

0.26

1.38

6.81

1.00E-06

9

0.21

1.42

3.66

5.00E-08