#thatsarockfact

[probablybadrpgideas]

If a party member is cat folk or tabaxi, flip a coin before every encounter to see if the NPC is allergic

[paleopals]

The Cedar Mountain formation, an Early Cretaceous sediment made famous by Utah's state dinosaur, Utahraptor!

The electric mint-green color of this formation is the result of iron redox reactions in the mudstone of the paleosol. Notorious for uranium deposits left behind by the long eroded Ancestral Rockies, mining occurred in this formation for nuclear energy needs during the Cold War.

[nachoslanderer]

Inktober 2018 - Day 9 - Precious Nothing is more wholesome than Greg, from Over the garden wall. Did something a little different today and decided to capture a time lapse. #inktober #inktober2018 #ink #day9 #precious #overthegardenwall #otgw #greg #thatsarockfact https://www.instagram.com/p/BouBlC2hD80/?utm_source=ig_tumblr_share&igshid=1if1rbj8r149y

[paleopals]

This is Split Mountain, a location in Dinosaur National Monument. The monument itself sports the greatest diversity of rock layers in the entire United States National Parks system! 😱

Violently uplifted by the Laramide orogeny, which also built the Rocky Mountains, sediments at some locations in Dinosaur were forced onto their side as the crust bent below.

This particular photo shows thick light Permian sandstones, garnished by colorful Triassic paleosols (prehistoric soil)!

[paleopals]

Here's your weekly dose of sedimentary geology!

This is a cross section of the Fountain Formation that dates to the Permian/Carboniferous. These beautiful striations of red and white (looking a little like bacon), are the result of variances in the iron content of the sediment.

[paleopals]

Here's an awesome outcrop of the Aztec Sandstone representing the Early Jurassic of Nevada!

Similar in many ways to the Navajo Sandstone, this layer consists of flowing desert sands that covered the western United States roughly 180 million years ago.

[paleopals]

Behold! The Lyons Sandstone, of the great American Permian desert!

Often blonde, this rock formation is red at this site due to oxidizing iron in the sediment. Just 280 million years ago (long before dinosaurs) this environment was home to the mighty predator, Dimetrodon!

[paleopals]

The Fountain Formation!

A Carboniferous & Permian sediment made famous by Red Rocks Park in Colorado. This material contains conglomerate (a mixture of multi sized stones bound together by the sediment) from the early erosion of the Ancestral Rockies. Because of this material, fossils are rare in the Fountain Formation.