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|style="padding:0 0.9em 0 0;" | [[File: | |style="padding:0 0.9em 0 0;" | [[File:Inspecting the GPS antenna at Toney Mountain.jpg|300px]] | ||
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'''[[Toney Mountain]]''' is an elongated [[snow]]-covered shield volcano, 60 km (38 mi) long and rising to 3,595 meters at Richmond Peak, located 56 km (35 mi) southwest of [[Kohler Range]] in [[Westarctica]]. | |||
Toney Mountain lies in a tectonically and volcanically active region of [[Antarctica]]. There, a layer of basaltic rocks up to 5 kilometers (3.1 mi) thick underlie a series of felsic volcanic edifices. These basaltic rocks in turn are emplaced above a Paleozoic basement with granite intrusions of Devonian-Cretaceous, which crops out in some mountain ranges. Beneath Toney Mountain, the basaltic floor rises from an elevation of 3 kilometers (1.9 mi) beneath sea level, and the volcano is situated on the floor of a graben. The region is further characterized by a 500 by 1,200 kilometers (310 mi × 750 mi) large dome-like uplift, part of the West Antarctic Rift, and it may reflect the presence of a stationary hotspot. | |||
<p><small> | <p><small>Photo by: Nicolas Bayou, UNAVCO</small></p> | ||
[[:Category:Images|'''(More Featured Images)''']] | [[:Category:Images|'''(More Featured Images)''']] | ||
<div class="potd-recent" style="text-align:right;"> | <div class="potd-recent" style="text-align:right;"> |