Deep Structure and Past Kinematics of Accreted Terranes

Deep Structure and PastKinematics of Accreted Terranes......Page 1
Geophysical Monograph Series......Page 3
Geophysical MonographlJUGG Series......Page 4
Deep Structure and PastKinematics of Accreted Terranes......Page 6
CONTENTS......Page 8
PREFACE......Page 9
Introduction......Page 10
Terrane Analysis......Page 11
Data Reliability Weighting......Page 12
Ad Hoc Decisions......Page 14
Southern Tethys Region......Page 15
Southwest Pacific Region......Page 18
Northwest Pacific Region......Page 19
Northeast Pacific Region......Page 20
Southeast Pacific and Caribbean Regions......Page 22
Northern Tethys Region......Page 23
Southeast Pacific Region......Page 25
Northern Tethys Region......Page 26
Southwest Pacific Region......Page 29
Northern Tethys Region......Page 31
Northern Tethys Region......Page 33
Discussion......Page 35
References......Page 36
Introduction......Page 50
Portezuelo del Cenizo Formation......Page 51
Choiyoi Formation......Page 54
Hypothesis A......Page 62
Hypothesis B......Page 64
References......Page 65
Introduction......Page 67
Results From the North - South DykeSwarm......Page 69
Results From the East - West and CapeOrford Dyke Swarms......Page 71
Interpretation of Results......Page 73
Discussion......Page 77
References......Page 79
Guerrero Terrane......Page 81
Xolapa Terrane......Page 83
Paleomagnetic Sampling......Page 84
Rock Magnetic Studies and Ore Petrology......Page 85
Demagnetization Experiments......Page 88
Remanence Directions and Paleopoles......Page 91
References......Page 98
Introduction......Page 101
Reference Frames and Uncertainties......Page 102
Pacific - North America, chron 6 20 Ma......Page 103
Farallon - North America, chron 25 56 Ma......Page 104
Discussion......Page 105
References......Page 107
Introduction......Page 109
Assumptions and Method......Page 110
Travel Trajectory Results......Page 114
Evolution Of The Triple Junction South Of Baja BC......Page 115
Summary......Page 117
References......Page 118
Introduction......Page 120
Diatreme Breccia......Page 121
Diatreme Combined......Page 122
Host Rock Limestone......Page 123
Pole Positions......Page 125
Discussion and Conclusion......Page 129
References......Page 130
Introduction......Page 133
NOTES......Page 136
Structural Style. Upper Ramparts......Page 137
Structural Style, Lower Ramparts......Page 138
Structural Orientation Data......Page 139
Structural Summary......Page 143
Paleomagnetic Analysis......Page 144
Overprint Virtual Geomagnetic Polesand Secular Variation......Page 145
Discussion......Page 151
Summary......Page 153
References......Page 155
Introduction......Page 157
Geology......Page 158
Paleomagnetic Sampling and Laboratory Methods......Page 163
Chickaloon Formation......Page 165
Arkose Ridge Formation......Page 166
Matanuska Formation......Page 168
ARM and Susceptibility......Page 171
Redeqosition-Recompaction Experiment Results......Page 172
Discussion......Page 175
Tectonic Synthesis......Page 179
References......Page 180
Rotated Terrane......Page 184
Quantifying Circulation in General Deformation Fields......Page 185
Definition of the Kinematical Voracity Number, WK......Page 186
Conduction of Heat into the Slab......Page 189
Viscosity Contrast......Page 190
4. Dynamics of a Rigid Body Immersed in a Viscous Fluid......Page 192
Simplification for the Body Freely Suspended......Page 193
Time Evolution of the Orientation Vector 40 and its Relation to thePaleomagnetic Declination......Page 194
6. Rotational Trajectories and Implications for Plio-Pleistocene Rotation Rates Beneath the Transverse Ranges, California......Page 196
Shear Rate at Depth: Some Theories and Observations......Page 197
An Estimate from Equation 5.8 for the Rate of Rigid Rotation ofthe Regional Upper Mantle Anomaly......Page 198
Predicted Rates and Neogene Declination Anomalies in the Transverse Ranges......Page 200
Additional Correlation with 0-6 Ma Rapid Rotation of the WesternTransverse Ranges Province: A Simple Model for the Pattern of Circulatory Flow Adjacent to the High Viscosity Structure......Page 202
8. Summary and Conclusions......Page 203
References......Page 204
Introduction......Page 207
NW United States and SW Canada; Appalachian Comparisons......Page 208
Conclusions......Page 210
References......Page 211
Method......Page 213
Central Europe......Page 215
Interpretation and discussion......Page 216
Model with inclined anisotropic structures......Page 217
Dipping anisotropic structures as remnants of accreted paleosubductions of oceanic lithosphere......Page 218
References......Page 220
Introduction......Page 222
Regional Geology......Page 223
Late Precambrian to Early Cambrian......Page 224
Late Cambrian to Early Ordovician......Page 225
Middle to Late Ordovician Magmatism......Page 228
Silurian-Devonian Magnaatism......Page 231
Thermal Evolution and Accretionary History of the Central andSouthern Appalachian Terranes: Plutonic Constraints......Page 233
Kinematic Model and Summary......Page 236
References......Page 238
Introduction......Page 242
Geological Setting......Page 243
Sampling and Laboratory Procedures......Page 244
Paleomagnetic Results......Page 245
Discussion......Page 248
References......Page 250
Introduction......Page 252
Results......Page 254
Tectonic Significance of Paleomagnetic Direction......Page 258
Model of Tectonic Rotation......Page 261
References......Page 266
Introduction......Page 269
Magnetic Measurement and Data Analysis......Page 270
Paleomagnetic Results From the SCB......Page 271
Demagnetization Properties Common to Three Areas......Page 273
The Kouauan Area of Shanxi Province......Page 274
The Jingle Area of Shanxi Province......Page 275
Comnarison with Other Permian Paleomagnetic Data From the NCB......Page 277
Overall Discussion of Paleomagnetic Results from Both the NCB and SCB Blocks......Page 279
Conclusion......Page 282
References......Page 283