Cambrian Orogenic Belt in East Antarctica and Sri Lanka ...
Ion microprobe UPb dating of zircons from the LützowHolm Complex (LHC) and the YamatoBelgica Complex (YBC), East Antarctica indie highgrade regional metamorphism and associated folding of LHC occurred between 521 pm 9 and 553 pm 6 Ma. This shows, for the first time, the existence of a Cambrian orogenic belt within the East Antarctic .