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Showing results for tags 'bullion creek formation'.
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Paleocene Plant Fossils of North Dakota (A Visual Post)
Thomas.Dodson posted a topic in Member Collections
Paleocene plants in Central North Dakota are among the first fossils I've collected. Despite this I haven't given them the attention they are due lately. The preservation is very nice but due to various reasons they've taken a back seat to other outcrops in the state like the Cretaceous ones and I haven't thought about them for awhile. I am now reorganizing some of my Paleocene collection and a spark was reignited in me. I've decided to post some of the best examples here as a result. Come spring hopefully I can collect in additional Fort Union sites. The terrestrial Paleocene deposits I've collected in all belong to the Fort Union Group, mostly the Sentinel Butte Formation and the Bullion Creek Formation. I see that some sources now list the Fort Union Group as a formation and the Sentinel Butte and Bullion Creek as members but for the purposes of this post I'll treat it as a group. First, petrified wood is a common constituent of the Fort Union Group. Some of the wood is rather spectacular though. Silicified patterns are often striking. This piece is Sentinel Butte Formation.- 10 replies
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