EVIDENCE FOR CAMBRIAN DEFORMATION IN THE ELLSWORTH-WHITMORE MOUNTAINSTERRANE, ANTARCTICA - STRATIGRAPHIC AND TECTONIC IMPLICATIONS

The Ellsworth-Whitmore Mountains terrane is a large geologically and g eophysically defined crustal block that lies between the Transantarcti c Mountains and West Antarctica, The Cambrian position of the terrane is controversial, with many workers placing it between East Antarctica and southern Africa and distant from Cambrian orogenic belts, We pres ent structural and stratigraphic evidence for Cambrian deformation in the Heritage Range, Ellsworth Mountains, From our revised stratigraphy and structural history of the Heritage Range, we propose that the Ell sworth-Whitmore Mountains block was located within the belt of Pan-Afr ican deformation, within the Late Cambrian continental are, and was pa rt of a collage of allochthonous terranes that included the Queen Maud terrane and probably the Bowers terrane of Antarctica, These terranes were situated outboard of Coats Land in the Cambrian and were subsequ ently translated and accreted to East Antarctica, probably during earl y Paleozoic time.