Sublacustrine Glacial Erosion in Montana

The influence of glacial erosion on landscape evolution and basin morphology in the Bitterroot Mountains Montana

Decadal-scale climate drivers for glacial dynamics in Glacier National Park, Montana, USA

[1] Little Ice Age (14th–19th centuries A.D.) glacial maxima and 20th century retreat have been well documented in Glacier National Park, Montana, USA. However, the influence of regional and Pacific Basin driven climate variability on these events is poorly understood. We use tree-ring reconstructions of North Pacific surface temperature anomalies and summer drought as proxies for winter glacia...

Selective glacial erosion and weathering zones in the coastal mountains of Marie Byrd Land, Antarctica

In the coastal mountains of Marie Byrd Land, Antarctica, there is a juxtaposition of ice moulded landforms at lower altitudes and upstanding summits with weathered surfaces bearing tors. This paper uses geomorphological mapping and exposure dating to test two hypotheses commonly used to explain such a landscape contrast: either the pattern reflects contrasts in glacial erosion related to the ba...

Mid-latitude glacial erosion hotspot related to equatorial shifts in southern Westerlies

Glaciation has affected the shape of mountain ranges and has induced a global increase in erosion rates during the past 2 m.y. The observed increase in erosion rates appears to vary with latitude, reaching a maximum at mid-latitudes that is particularly well defined in the Southern Hemisphere. Although it is likely that climate played an important role, the processes responsible for such latitu...

Glacial erosion and relief production in the Eastern Sierra Nevada, California

The proposal that climate change can drive the uplift of mountain summits hinges on the requirement that glacial erosion significantly enhances the relief of a previously fluvially sculpted mountain range. We have tested this hypothesis through a systematic investigation of neighbouring glaciated and nonglaciated drainage basins on the eastern side of the Sierra Nevada, CA. We present a simple,...