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Difference between revisions of "The Billboard"
Added info on protection as a NM ahead of a new separate article.
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==Geology== | ==Geology== | ||
The Billboard is composed of Cretaceous Byrd Coast granite. It is topped by an erosion surface that reaches an elevation of 793 meters (2,602 ft), which is about 700 meters (2,300 ft) above the outlet glacier below. The surface lacks glacial erosion features; however erratics found on the surface provide evidence of overriding by cold-based [[glacier]] ice. Features of prolonged surface weathering in a sub-aerial environment are sheeting and weathering pits. | The Billboard is composed of Cretaceous Byrd Coast granite. It is topped by an erosion surface that reaches an elevation of 793 meters (2,602 ft), which is about 700 meters (2,300 ft) above the outlet glacier below. The surface lacks glacial erosion features; however erratics found on the surface provide evidence of overriding by cold-based [[glacier]] ice. Features of prolonged surface weathering in a sub-aerial environment are sheeting and weathering pits. | ||
==Protection by the government== | |||
[[File:Billboard NM Boyd Glacier CZ.jpg|thumb|The boundaries of Billboard National Monument (outlined in green)]] | |||
On 20 April 2025, [[Grand Duke Travis]] declared the Billboard a national monument under the oversight of the [[Westarctican Parks Service]]. It was protected in the first group of sites named by the government. | |||
The feature was preserved primarily for its striking geological aesthetic. Billboard National Monument protects the surrounding area of the Sarnoff Mountains, making up roughly the western half of the range, from [[Walgreen Peak]] to the [[Bailey Ridge]]. The Sarnoff Mountains were on the January 2024 list of ten sites that should be considered for eventual protection as a national park of Westarctica, but more detailed review deemed the final recommended borders to be more appropriate, anchoring the Billboard as the primary focus. | |||
[[Category:Geography of Westarctica]] | [[Category:Geography of Westarctica]] | ||
[[Category:Places]] | [[Category:Places]] | ||