1 10 1 https://theses.otagogeology.org.nz/files/original/6e92e432aab5cf82e1b71abbf3aac22c.pdf 337d7901f167abee4e7b8f920deb9ae1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Geology theses OU Geology thesis Thesis or dissertation completed by University of Otago Geology students Location WKT (WGS84) The location stored in WKT (WGS84) format POLYGON ((167.589182872000038 -45.129208670999958,167.543631172000119 -45.130419058999962,167.524545568000121 -45.056757791999985,167.521113179000054 -45.043490254999938,167.64234400700002 -45.039251233999948,167.658252799000024 -45.127121700999965,167.658291904000066 -45.127337365999949,167.658233059000054 -45.127338977999955,167.589182872000038 -45.129208670999958)) Author last name Last name of the Author Morrison Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Wood, B.L. Abstract The Abstract for this thesis A layered gabbro overlying granodiorite and a sequence of hornblende-bearing and quartzofeldspathic gneisses have been described from an area of 25km2 about Lake Hankinson and the N.W. Arm, Middle Fiord, Lake Te Anau. The gneissose rocks represent a westward younging sequence of basic and semibasic (basic-intermediate) lavas and tuffs overlain by quartzofeldspathic and possibly calcareous sediments. This sequence has been completely recrystallised by amphibolite grade metamorphism. South of a roughly E-W trending line through the centre of the area (the Howitt Peaks Fault) gneissose rocks are uncommon. Instead, a flat-lying sequence of differentiated ultrabasic rocks, approximately 550 feet thick, overlie felsic igneous rocks of a dominantly granodioritic composition. This sequence is in various stages of recrystallisation under the influence of amphibolite grade metamorphism~ The degree of recrystallisation is largely dependent on the composition of the original rock. Study of a range of secondary phases by optical and X-ray methods, suggest that mineral composition is also largely dependent on the composition of the original rock. Two phases of faulting accompanied by retrogressive metamorphism and crush zones disrupt all lithologies and give rise to intermixing of adjacent rock types. On the basis of tectonic position and associated rock types the N.W. Arm gabbro is thought to be genetically related to the Mt Luxmore Ultrabasics of the South Fiord, Lake Te Anau. Comparisons with Central Fiordland gabbroic bodies are also considered. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. North-West Arm Middle Fiord Lake Te Anau Thesis description Number of pages, maps, CDs, etc. 88 leaves : illus. maps (fold) ; 29 cm. Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Identifier An unambiguous reference to the resource within a given context 1973Morrison Creator An entity primarily responsible for making the resource Morrison, Gregg W. Date A point or period of time associated with an event in the lifecycle of the resource 1973 Title A name given to the resource Geology of an area about N.W. Arm, Middle Fiord, Lake Te Anau Subject The topic of the resource Map Igneous petrology Metamorphic geology Structural geology gabbro gneiss granodiorite layered gabbro ultramafic rocks