Glacial geomorphology of the Brabazon & Butler Downs, Rangitata Valley, South Island, New Zealand
| Autor: | Stefan Winkler, Rosabella Borsellino, James Shulmeister |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010504 meteorology & atmospheric sciences
Glacial landform Geography Planning and Development Fluvial 010502 geochemistry & geophysics 01 natural sciences Glacial geomorphology Rangitata lcsh:G3180-9980 Earth and Planetary Sciences (miscellaneous) moraines kame terraces Glacial period Meltwater Geomorphology 0105 earth and related environmental sciences lcsh:Maps geography geography.geographical_feature_category kettles U-shaped valley Moraine Kame Geology Chronology New Zealand |
| Zdroj: | Journal of Maps, Vol 13, Iss 2, Pp 502-510 (2017) |
| DOI: | 10.6084/m9.figshare.5110306.v2 |
| Popis: | The inland valleys of New Zealand’s South Island were heavily glaciated during the last glacial cycle. Subsequent fluvial incision has eroded out glacial deposits from the valleys in many locations, making it difficult to reconstruct glacial dynamics and chronology. The Brabazon and Butler Downs lie in a fault-controlled intra-montaine basin that has been largely protected from fluvial erosion and the area contains extensive evidence for multiple glacial margins. This paper presents a detailed glacial geomorphology map of the Brabazon and Butler Downs at a scale of 1:20,000. Glacial landforms have been mapped and subdivided into three main zones: an upper zone distinguished by a flight of kame terraces, a middle zone containing kettles and meltwater channels, and a lower zone of lateral moraines. The new map provides insight into former glacial environments in the region and provides a related framework for future paleoclimate reconstructions. |
| Databáze: | OpenAIRE |
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