The 2D Fold Test Results

The 2D fold test results

from Tien Shan’s paleomagnetic data, Locality S, T, V & W (Bazhenov et al, 1999)

Dedi Setiabudidaya

Department of Physics, Sriwijaya University, Indonesia

Locality S

First Limb

SiteID Dec Inc Azm Dip

S1 58 -70 10 40

Second Limb

SiteID Dec Inc Azm Dip

S2 147 -27 164 22

S3 159 -13 164 36

S4 163 -6 174 47

S5 150 24 172 72

Figure Fold test result from Locality S; data from Bazhenov et al (1999)

1D fold test:

unfolding = 1.00

dec = 150.83 inc = -50.47 k = 96.98

paleolatitude_1D = -31.21

2D fold test:

unfolding first limb = 0.99 unfolding second limb = 1.00

dec = 150.74 inc = -50.55 k = 94.95

paleolatitude_2D = -31.29

Note: the numbers of the 2D fold test result above were taken from averaging 2 mean data whose k of 95% k_maximum (92.93 and 96.98), declination values: 150.65o and 150.82o and inclination values: (-50.63o) and (-50.47o).

Locality T

First Limb

SiteID Dec Inc Azm Dip

T1-V 157.2 -29.5 188 32

T2-V 148.1 -11.0 160 53

T3-V 149.3 -26.1 151 35

Second Limb

SiteID Dec Inc Azm Dip

T4-V 105.1 -30.9 48 36

T5-V 78.2 -33.1 7 54

Figure Fold test result from Locality T; data from Bazhenov et al (1999)

1D fold test:

unfolding = 0.86

dec = 131.96 inc = -48.88 k = 36.64

paleolatitude_1D = -29.81

2D fold test:

unfolding first limb = 0.66 unfolding second limb = 0.98

dec = 136.39 inc = -44.22 k = 45.62

paleolatitude_2D = -25.95

Note: the numbers of the 2D fold test result above were taken from averaging 21 mean data whose k of 95% k_maximum (larger than 44.55), declination values ranging from 135.64o – 137.30o and inclination values ranging from (-45.840) – (-42.82o).

Locality V

First Limb

SiteID Dec Inc Azm Dip

V1 76.2 -63.8 9 74

V2 70.5 -39.6 353 104

V3 85.2 -54.9 18 56

Second Limb

SiteID Dec Inc Azm Dip

V4 137.2 -38.8 164 20

V5 158.6 -35.9 174 38

V6 159.0 -29.4 173 37

V7 149.2 -47.7 142 20

Figure Fold test result from Locality V; data from Bazhenov et al (1999)

1D fold test:

unfolding = 0.52

dec = 137.97 inc = -50.86 k = 33.18

paleolatitude_1D = -31.56

2D fold test:

unfolding first limb = 0.45 unfolding second limb = 0.71

dec = 133.52 inc = -55.01 k = 33.35

paleolatitude_2D = -35.54

Note: the numbers of the 2D fold test result above were taken from averaging 101 mean data whose k of 95% k_maximum (larger than 32.29), declination values ranging from 129.46o – 137.08o and inclination values ranging from (-57.470) – (-52.52o).

Locality W

First Limb

SiteID Dec Inc Azm Dip

W1 163.9 11.2 186 68

W2 158.6 13.0 169 57

Second Limb

SiteID Dec Inc Azm Dip

W3 118.1 -40.2 21 18

W4 132.8 -24.9 132 19

Figure Fold test result from Locality W; data from Bazhenov et al (1999)

1D fold test:

unfolding = 1.00

dec = 142.14 inc = -43.72 k = 58.94

paleolatitude_1D = -25.55

2D fold test:

unfolding first limb = 0.97 unfolding second limb = 0.94

dec = 142.35 inc = -42.87 k = 57.41

paleolatitude_2D = -24.89

Note: the numbers of the 2D fold test result above were taken from averaging 27 mean data whose k of 95% k_maximum (larger than 56.14), declination values ranging from 141.58o – 143.21o and inclination values ranging from (-43.720) – (-41.94o).

Reference:

Bazhenov, M.L., V.S. Burtman, A.V. Dvorova (1999). Permian paleomagnetism of the Tien Shan fold belt, Central Asia: post-collisional rotations and deformation. Tectonophysics 312, 303 – 329.