Author: Davis B. K. Henderson R. A. Lindsay M. Wysoczanski R.
Publisher: Taylor & Francis Ltd
ISSN: 0812-0099
Source: Australian Journal of Earth Sciences, Vol.49, Iss.5, 2002-10, pp. : 775-785
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Granite plutons of the Whypalla Supersuite in the Butchers Hill — Helenvale region of north Queensland were intruded into the upper crust of the Hodgkinson Formation during contractional deformation associated with the Permian‐Triassic Hunter‐Bowen Orogeny. A four‐stage structural history has been resolved for the area, with fabric overprinting relationships, porphyroblast‐matrix microstructural geometries and isotopic ages being consistent with granite emplacement during D 4 shortening at ca 274 Ma. Microstructural relationships suggest the possibility of a minor syn‐D 3 phase of granite emplacement. The deformation‐emplacement history of the Butchers Hill — Helenvale area is consistent with that recognised regionally for the Hodgkinson Province, indicating province‐wide synchronous syntectonic granite intrusion during a major phase of contractional deformation. Intense syn‐emplacement deformation partitioning was ongoing in the country rocks during progressive D 4 and was associated with upward translation of country rock from the microscale to the macroscale along D 4 cleavages and shears. Kinematic indicators show that this progressive uplift, at the scale of the area examined, was east‐side‐up.
Related content
By Zucchetto R. G. Henderson R. A. Davis B. K. Wysoczanski R.
Australian Journal of Earth Sciences, Vol. 46, Iss. 1, 1999-02 ,pp. :
By Marshallsea S. J. Green P. F. Webb J.
Australian Journal of Earth Sciences, Vol. 47, Iss. 4, 2000-08 ,pp. :
By Vos I. M. A. Bierlein F. P. Webb J.
International Journal of Earth Sciences, Vol. 95, Iss. 4, 2006-07 ,pp. :