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Type: Thesis
Title: Faults in 1100 orebody Mount Isa Mines
Author: Bridges, Malcolm
Issue Date: 1969
School/Discipline: School of Physical Sciences
Abstract: 1100 orebody is a large copper orebody deep in the southern part of Mount Isa Mines, North-Western Queensland. Host rock is a recrystallised siliceous, dolomitic breccia enveloped by pyritic, dolomitic shale striking 340deg-160deg, dipping 65deg W. Within this orebody are faults which have a characteristic filling of calcite and gypsum. They are the last stage of shear fracturing in the mine area, possibly being a result of an E-W compression along an axis essentially normal to bedding, though their movement picture is not clear. The faults are as main faults, in a conjugate pair, and as auxiliary faults, whose development is influenced by the rock type, with an average orientation of 116deg-296deg, 86deg NE and 064deg-244deg, 70deg NW. Uplift of these rocks, with a relaxation of stress, has resulted in a N-S horizontal extension along bedding, opening of faults with subsequent filling of calcite and gypsum, and extension fracturing with fracture planes normal to bedding. Dolomite grains have been extended along an axis normal to bedding during a later stage of uplift.
Dissertation Note: Thesis (B.Sc.(Hons)) -- University of Adelaide, School of Physical Sciences, 1969
Where: Mt Isa Province, north Queensland
Keywords: Honours; Geology; faulting; structural deformation
Description: This item is only available electronically.
Provenance: This electronic version is made publicly available by the University of Adelaide in accordance with its open access policy for student theses. Copyright in this thesis remains with the author. This thesis may incorporate third party material which has been used by the author pursuant to Fair Dealing exceptions. If you are the author of this thesis and do not wish it to be made publicly available, or you are the owner of any included third party copyright material you wish to be removed from this electronic version, please complete the take down form located at:
Appears in Collections:School of Physical Sciences

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02wholeGeoHon.pdfWhole thesis (as available)7.61 MBAdobe PDFView/Open

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