1 10 1 https://theses.otagogeology.org.nz/files/original/bc6dc21e0863f7fef8651797ba752958.pdf d41d8cd98f00b204e9800998ecf8427e 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 ((169.790884564000066 -44.582247909999978,169.758706162000067 -44.497849782999936,169.76191046100007 -44.494769115999929,169.778427935000082 -44.478883,169.780422440000052 -44.476961553999956,169.782513000000108 -44.474948176999931,169.801794925000081 -44.456384293999974,169.90667832400004 -44.459570356999961,169.934641397000064 -44.478394433999938,169.937485948000017 -44.480311484999959,169.94063769100012 -44.482434713999965,169.948650869000062 -44.487820203999945,169.953381473000036 -44.491002340999955,169.966773640000042 -44.500004198999932,169.974380779000057 -44.505115933999946,169.972151746000122 -44.544900028999962,169.969730650000088 -44.588132676999976,169.969267219000017 -44.588692441999967,169.944542543000011 -44.618578427999978,169.911767970000028 -44.658138807999933,169.81911759400009 -44.656091309999965,169.790884564000066 -44.582247909999978)) Author last name Last name of the Author Udy Project type Is it an MSc, PhD, BSc(Hons) or PGDipSci? BSc(Hons) Advisers Who supervised/advised this student Landis, C.A. Koons, P. Norris, R.J. Abstract The Abstract for this thesis A geological study of the Omarama Basin (inland North Otago) involving field mapping, scanning electron microscopy, and previous palynological data indicates that the late Tertiary-early Quaternary (new) Mackenzie Group gravels and silts of the Mackenzie Basin represent deposition in a glaciofluvial and glaciolacustrine environment. These sediments are the oldest (Mangapanian -Hautawan, Mildenhall,1980) records of a glaciation within the Mackenzie Basin. Several generations of late Quaternary sediments have also been mapped, including the Aviemore Formation glaciofluvial gravels which represent the most recent advance of the last major Pleistocene (Otira) glaciation. A gravity survey of the area indicates: i) the depth of sediment within the Omarama Basin may exceed 500m in the centre of the basin, and in the Omarama Stream valley it increases northward from ~20m at the head of the valley to over 200m near Twin Peaks Station, ii) the Ewe Range is extensively sheared as a result of movement within the Hawkdun Fault Zone. This shearing has produced extensive zones of low density crushed rock which are readily apparent on the survey traverses as gravity lows. The two dimensional models produced for these profiles suggest that the Hawkdun Fault is a high angle reverse fault, and geological evidence indicates compression in a NE-SW direction across the zone. In the light of the present tectonic regime in the South Island, it seems very likely that there is a considerable component of strike slip movement along this fault, iii) the Ostler Fault Zone in this area is more complex than previously thought and consists of at least three low angle, imbricate reverse faults. This zone may be the toe region of a large scale fold and thrust belt which has been thrust from the northwest due to the compressional tectonic regime present in the South Island since the Miocene. Several minor faults are associated with the two major fault zones in the area. These have been inferred on the basis of Landsat photograph lineaments, lineament patterns on aerial photographs, the presence of extensive piedmont gravel fans and topography. A presence of a combination of these features may prove useful in mapping the areal extent of faulting elsewhere in Otago. On the basis of field observations it is suggested that the wetland areas that have developed at the Aviemore Formation-Alluvial Fan Gravel contacts may be a potential source of irrigation water during the dry summer months. Likewise, the extensive crush zones on the flanks of the Ewe Range may also have the potential to produce significant quantities of water. Further investigation of these possible resources, and of the ground water resource in the Red Flat area is warranted. Department The department where the student is studying primarily. Geology Named locality Named locality describing the field area location. Omarama Basin Thesis description Number of pages, maps, CDs, etc. iii. 96 p. diagms, photos, map,(folded in pocket); 30 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 1987Udy Creator An entity primarily responsible for making the resource Udy, AJ Date A point or period of time associated with an event in the lifecycle of the resource 1987 Title A name given to the resource A geological and geophysical survey of the Omaramara Basin. Subject The topic of the resource Cenozoic Geomorphology Geophysics Lithostratigraphy Tectonics Aviemore Formation Benmore Formation Hawkdun Fault Ostler Fault