Now showing items 31-40 of 96
The Anatoki fault and structure of the adjacent Buller and Takaka terrane rocks, northwest Nelson, New Zealand
(University of Canterbury. Geology, 1997)
The Early Paleozoic rocks exposed in the northwest of the South Island, New Zealand, can be grouped into two terranes. An Ordovician deep water passive margin assemblage makes up the Buller terrane. A Cambrian arc ...
Sediment and heavy metal distributions in the Avon-Heathcote estuary, Christchurch, New Zealand
(University of Canterbury. Geology, 1991)
Shallow cores from the Avon-Heathcote Estuary possess the following four distinct sedimentary units: 1) medium fine sand (Unit A), 2) muddy fine sand (Unit B), 3) slightly sandy mud (Unit C), and 4) muddy fine sand (Unit D).
Using Surface Methods to Understand the Ohaaki Hydrothermal Field, New Zealand
(University of Canterbury. Geological Sciences, 2010)
After water vapour, CO₂ is the most abundant gas associated with magmatic hydrothermal systems. The detection of anomalous soil temperature gradients, and/or a significant flux of magmatic volatiles, is commonly the only ...
The evolution of Maroa Volcanic Centre, Taupo Volcanic Zone, New Zealand
(University of Canterbury. Geology, 2003)
Maroa Volcanic Centre (Maroa) is located within the older Whakamaru caldera, central Taupo Volcanic Zone, New Zealand. Dome lavas make up the majority of Maroa volume, with the large Maroa West and East Complexes (MWC and ...
Studies of the solid state: The mineralogy and environment of some New Zealand glauconites.
(University of Canterbury. Geological Sciences, 1964)
Glauconite occurs as the major constituent of late Cretaceous and Tertiary greensand deposits formed in New Zealand during periods of marine transgression. These glauconites are generally found to be high in potassium ...
Structural styles and sedimentation at the southern termination of the Hikurangi subduction zone, offshore North Canterbury, New Zealand
(University of Canterbury. Geology, 1993)
In the northern region of South Island, New Zealand, a major tectonic transition occurs in the obliquely convergent Australia-Pacific plate boundary. The southern end of the Hikurangi subduction zone terminates against the ...
Mafic-felsic interaction in a high level magma chamber - the Halfmoon Pluton, Stewart Island, New Zealand: implications for understanding arc magmatism
(University of Canterbury. Geological Sciences, 2009)
Field evidence from exposed plutonic rocks indicates that mafic-felsic magma interaction is an important process during the construction and evolution of magma chambers. The exhumed, ~140 Ma, Halfmoon Pluton of Stewart ...
Rock Avalanches on Glaciers: Processes and Implications
(University of Canterbury. Geological Sciences, 2012)
This thesis examines the role of rock avalanches in tectonically active terrains including the effects of the deposits on glacier behaviour and their contribution to moraine formation. The chronologies of mountain glacier ...
Lahar initiation and sediment yield in the Pasig-Potrero River Basin, Mount Pinatubo, Philippines.
(University of Canterbury. Geological Sciences, 2002)
A systemic basin-wide consideration of the complex interaction of many hydrogeomorphic and volcanic processes involved in lahar initiation emphasizes the role of rill erosion, both on tephra-covered hill slopes and on the ...
Petrology and geochemistry of the central Mindano volanic arc, southern Philippines.
(University of Canterbury. Geology, 1992)
This paper presents the regional geology, geochemistry and petrogenesis of volcanic rocks from Central Mindanao Volcanic Arc (CMVA), Philippines. This NNW-trending arc, from Lat 6°N-Long 125ºE to Lat 90 15'-Long 125º30'E ...