TY  - JOUR
N1  - The definitive version is available online at 
http://www.informaworld.com/smpp/content?
ID  - epprod6492
UR  - http://dx.doi.org/10.1080/08120090701305269
IS  - 5
A1  - Berry, RF
A1  - Chmielowski, RM
A1  - Steele, DA
A1  - Meffre, S
Y1  - 2007/07//
N2  - Chemical U? Th ? Pb dating of monazite from 12 schists throughout western and central Tasmania
define a peak metamorphic age of ca 510 Ma. This age is very close to the age of arc ? continent
collision and ophiolite emplacement, implying very rapid uplift and cooling. To the south, along the
western margin of the South Tasman Rise, metamorphism occurred later at 495 Ma, which correlates
with a late stage of the Ross Orogeny, Antarctica. The Tyennan Orogeny in Tasmania has a three-stage
history similar in age to the Delamerian Orogeny in South Australia. However, the Tyennan Orogeny only
produced metamorphic rocks during the early stage associated with ophiolite obduction at
515 ? 505 Ma. The intense compressional event recognised in the Delamerian and Ross Orogeny at
500 ? 495 Ma is correlated with a mild basin inversion in Tasmania, and no metamorphism on mainland
Tasmania has been recognised associated with this event. The westernmargin of the South Tasman Rise
is a fragment of the Ross Orogen and does not correlate directly with Tasmania.
JF  - Australian Journal of Earth Sciences
VL  - 54
KW  - Delamerian Orogeny
KW  -  geochronology
KW  -  metamorphism
KW  -  monazite
KW  -  Ross Orogeny
KW  -  Tasmania
KW  - 
Tyennan Orogeny.
SN  - 0812-0099
TI  - Chemical U?Th?Pb monazite dating of the Cambrian
Tyennan Orogeny, Tasmania
SP  - 757
AV  - restricted
EP  - 771
ER  -