Changes

===Transpression and transtension===

===Transpression and transtension===

Strain partitioning is common within [[transpression|transpressive]] and [[transtension|transtensive]] tectonic domains.<ref name=TyesTik />Teyssier, Christian; Tikoff, Basil; Markley, Michelle (1995). "Oblique plate motion and continental tectonics". Geology 23 (5). doi:10.1130/0091-7613(1995)023<0447:OPMACT>2.3.CO;2.<ref name=FossenNorsk></ref> Both regimes involve a component of pure shear (transpression - compressive, transtension - extensive) and a component of simple shear.<ref name=Fossen /><ref name=TyesTik /><ref name=FossenNorsk /> Strain may be partitioned by the development of a [[strike slip fault]] or [[shear zone]] across the actively deforming region.<ref name=TyesTik /><ref name=FossenNorsk />

Strain partitioning is common within [[transpression|transpressive]] and [[transtension|transtensive]] tectonic domains.<ref name=TyesTik /><ref name=FossenNorsk>Fossen, Haakon; Tikoff, Basil; Teyssier, Christian (1994). "Strain modeling of transpressional and transtensional deformation". Norsk Geologisk Tidsskrift 74: 134–145.</ref> Both regimes involve a component of pure shear (transpression - compressive, transtension - extensive) and a component of simple shear.<ref name=Fossen /><ref name=TyesTik /><ref name=FossenNorsk /> Strain may be partitioned by the development of a [[strike slip fault]] or [[shear zone]] across the actively deforming region.<ref name=TyesTik /><ref name=FossenNorsk />  

==== Example: Coast Mountains British Columbia ====

==== Example: Coast Mountains British Columbia ====

The [[Coast Mountains]] of British Columbia are interpreted as a transpressive orogen which formed during the [[Cretaceous]].<ref name=CPCTect>Chardon, Dominique; Andronicos, Christopher; Hollister, Lincoln (1999). "Large-scale transpressive shear zone patterns and displacements within magmatic arcs: The Coast Plutonic Complex, British Columbia". Tectonics 18 (2): 278–292.</ref> Oblique subduction induced the development of several shear zones which strike parallel to the orogen.<ref name=CPCTect /> The presence of these shear zones suggest that strain is partitioned within the Coast Orogen which resulted in horizontal translation of terranes for several hundred kilometers parallel to the orogen.<ref name=CPCTect />  

The [[Coast Mountains]] of British Columbia are interpreted as a transpressive orogen which formed during the [[Cretaceous]].<ref name=CPCTect>Chardon, Dominique; Andronicos, Christopher; Hollister, Lincoln (1999). "Large-scale transpressive shear zone patterns and displacements within magmatic arcs: The Coast Plutonic Complex, British Columbia". Tectonics 18 (2): 278–292.</ref> Oblique subduction induced the development of several shear zones which strike parallel to the orogen.<ref name=CPCTect /> The presence of these shear zones suggest that strain is partitioned within the Coast Orogen which resulted in horizontal translation of terranes for several hundred kilometers parallel to the orogen.<ref name=CPCTect />  

[[File:TranpTrans2.jpeg|600px|thumbnail|center|Block diagram illustrating the difference between homogeneous and partitioned strain within transpressive and transtensive tectonic regimes. The partitioning of strain occurs through the development of a strike slip or shear zone (shown with red arrows) across the actively deforming region (brown). Adaptation and modification from (Teyssier et al, 1995;<ref name=TyesTik>{{cite journal|last1=Teyssier|first1=Christian|last2=Tikoff|first2=Basil|last3=Markley|first3=Michelle|title=Oblique plate motion and continental tectonics|journal=Geology|date=1995|volume=23|issue=5|doi=10.1130/0091-7613(1995)023<0447:OPMACT>2.3.CO;2}}</ref> Fossen, 2012;<ref name=Fossen /> Jones and Tanner, 1995;<ref name=Jones&Tanner /> Sanderson and Marchini, 1984<ref name=Transpression />)]]

[[File:TranpTrans2.jpeg|600px|thumbnail|center|Block diagram illustrating the difference between homogeneous and partitioned strain within transpressive and transtensive tectonic regimes. The partitioning of strain occurs through the development of a strike slip or shear zone (shown with red arrows) across the actively deforming region (brown). Adaptation and modification from (Teyssier et al, 1995;<ref name=TyesTik>Teyssier, Christian; Tikoff, Basil; Markley, Michelle (1995). "Oblique plate motion and continental tectonics". Geology 23 (5). doi:10.1130/0091-7613(1995)023<0447:OPMACT>2.3.CO;2.</ref> Fossen, 2012;<ref name=Fossen /> Jones and Tanner, 1995;<ref name=Jones&Tanner /> Sanderson and Marchini, 1984<ref name=Transpression />)]]