![]() Well, that is until proceeding the first 20 feet and realizing the path is nothing more than a dry streambed. One can see the locality a mile away, but how does one get there? The answer is a dirt road of course. After traveling about 30 miles on a poorly maintained dirt road, it really becomes interesting. This desert locality is truly in the “middle of nowhere”. The most famous location is called Topaz Mountain which is about 2 hours northeast of U-Dig Fossils and 1½ hours northwest of Delta. TOPAZ: Throughout western Utah, approximately 6-7 million years ago, volcanic rocks erupted spewing basaltic lava flows and building mountains composed of rhyolite. Like some other Cambrian trilobites, the tiny Peronopsis interstricta had no eyes and were completely blind. The plate in the cover photograph above is 9 cm. We were even lucky enough to uncover and recover a mortality plate with multiple Elrahia kingi. Additionally, lingulid brachiopods, Phyllocarids, and algae (black polka dots on the shale) can be found. The majority of the trilobite fossils uncovered are molts, however, complete, immature (1-2 mm) to adult (2 cm) forms are there for the persistent collector. Elrathia kingii, Asaphiscus wheeleri and Peronopsis interstricta are all fairly common and we found examples of each However, Bolaspidella housensis, Altiocculus harrisi, and Olenoides nevadaensis are quite rare. In a four hour period, hundreds of partial trilobites will be seen, and maybe 3-5 really nice examples can be collected. The trick is not finding a trilobite but instead finding that perfect specimen. Pickings are easy, all one needs to do is look at their feet, but if one prefers, they can remove new blocks of rock from the outcrop. For a small fee, amateurs and professionals can collect trilobites. About 32 miles west of Delta and 20 miles north on a maintained gravel road, is a small shed adjacent to a cliff face. U-Dig Fossils is probably the best known of these quarries. ![]() Today there are numerous private and public enterprises with land claims near Delta, Utah to collect these fossils. Subsequently from the 1880’s –1900’s Charles Walcott (born in Upstate New York and employed by James Hall) published many reports of the rocks and fossils of the Cambrian strata (i.e. In the 1870’s Army Lieutenant George Wheeler named a bowl-shaped area in the House Range the Wheeler Amphitheater and comprising the Wheeler Shale. Early geologists extensively studied the stratigraphy and paleontology of the region. ![]() TRILOBITES: Early in human history, necklaces made of trilobites were regarded by the Pahvant Indians as “protecting the body from sickness and weapons of death as long as a man’s heart is pure” (Robison, Babcock, and Gunther, 2015). Specifically, well preserved trilobites and beautiful topaz crystals can be collected. Not only are there 505-520 million year old fossils abundant, but also recent volcanism in the same region has left its mark with abundant rocks and minerals. Very thick shale and calcareous mudstones are widespread in Millard County, west-central Utah and contain some of the best Cambrian biotas in the world. The setting and geology are quite different than in western New York. Naturally, we took some time between visits to National Parks to do a little fossil and mineral collecting in Utah. Tammy and I are back from a vacation in the desert southwest. If going to U-dig Fossils they will provide all the tools you need to find fossils.Many thanks to Stephen Mayer for writing this collecting trip note for the August WCGMC newsletter and also for allowing me to post it my blog.Lots of water, especially in the summer months However, the U-dig quarry does have toilet facilities if you pay to find fossils. The closest amenities are about an hour away in Delta, UT. There are no bathrooms or water on BLM land.Especially when you are in a paid quarry where there are more fossils. Personally, I think 2 hours is plenty of time to fossil hunt. Prices at U-dig Fossils (as of April 2021):Ģ Hours – Ages 7 to 16: $19 Age 17 and older: $33Ĥ hours – Ages 7 to 16: $33 Age 17 and older: $49Ĩ hours – Ages 7 to 16: $58 Age 17 and older: $90Īges 6 and under are free with a paying adult However, other blogs have mentioned that the overall fossil quality is better there than on the BLM land. We went fossil hunting when U-dig wasn’t open so I can’t speak to the success of fossil finding there. This private, 40 acre quarry provides tools and instructions on fossil hunting. There is a paid option up the road about a mile from the BLM land called U-dig Fossils. When to Go: Spring, Summer (morning or evening), Fall COSTįree on Bureau of Land Management (BLM) land. Difficulty: Very Easy Easy MODERATE Hard Very Hard
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