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.