Glacial geomorphology, fluvial geomorphology, hillslope geomorphology, submarine geomorphology, tectonic geomorphology...

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Wednesday, 17 March 2010

Pseudo-weekly GoogleEarth placemark #3 - Rangitata River


The mighty Rangitata River flows from the main divide of New Zealand's Southern Alps across the Canterbury Plains to the east coast of South Island, where the coastal stratigraphy records at least the last 30 ka of the river's history. As this includes New Zealand's LGM (22-18 ka) we can use these sediments to investigate the response of the Rangitata, and the neighbouring Ashburton and Rakaia Rivers, to glacial-interglacial cycles.
In these rivers' headwaters, GoogleEarth provides high-res imagery of glacial geomorphology that indicates the frequent and rapid glacial advances that have occurred in this area since the LGM.