@article{PAR00002589,
  title = {{P}recambrian continental strain and shear zone patterns : {S}outh {I}ndian case - art. no. {B}08402},
  author = {{C}hardon, {D}ominique and {J}ayananda, {M}. and {C}hetty, {T}. {R}. {K}. and {P}eucat, {J}. {J}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}his study addresses the tectonic and mechanical significance of crustal-scale strain and shear zone patterns in the {S}outh {I}ndian {P}recambrian lithosphere. {I}t is based on a tectonic map of the {D}harwar craton derived from {LANDSAT} imagery, existing documentation, and our own field observations. {W}e document the contrasted responses of the two main parts of the craton to late {A}rchean (2.56-2.51 {G}a) shortening. {T}he old (> 3 {G}a) lithosphere of the {W}estern {D}harwar craton stabilized at 2.61 {G}a underwent moderate shortening and strain localization along spaced shear zones. {T}he {E}astern {D}harwar craton, rejuvenated by late {A}rchean juvenile magmatic accretion, responded to shortening by flowing laterally against the {W}estern {D}harwar craton. {S}hortening operated without significant thickening because of the high buoyancy of the juvenile crust and the very low strength of its mantle lithosphere. {T}he late {A}rchean crustal-scale shear zone network did not accommodate large displacements and only contributed to smoothing out of strain heterogeneities during the latest stages of flow. {T}he shear zone pattern only reflects the symmetry of the regional finite strain field of a wide hot orogen. {I}t does not result from terrain amalgamation but accompanies crustal flow and does not compare with those of modern active margins, which accommodate unidirectional transpression. {O}ur analysis further suggests that the shear zones bounding the craton did not record large horizontal displacements during final assembly of {G}ondwana but rather transverse shortening and vertical extrusion.},
  keywords = {},
  booktitle = {},
  journal = {{J}ournal of {G}eophysical {R}esearch-{S}olid {E}arth},
  volume = {113},
  numero = {{B}8},
  pages = {8402},
  ISSN = {0148-0227},
  year = {2008},
  DOI = {10.1029/2007{JB}005299},
  URL = {https://www.documentation.ird.fr/hor/{PAR}00002589},
}