Historical Marker Search

You searched for City|State|Country: , co us

Showing results 1 to 10 of 64
historicalmarkerproject/markers/HM2CKG_brontosaur-bulges_Morrison-CO.html
Brontosaur Bulges. The downward bulges in the rock layers are most likely dinosaur tracks viewed in cross section. When dinosaurs walked in soft sand they sank in, pushing down and distorting the layers beneath their feet. The tracks later fille…
historicalmarkerproject/markers/HM2CJS_theropod-track_Morrison-CO.html
Theropod Track. First noted by Matt Mossbrucker and later described by Dr. Martin Lockley, this theropod (a carnivorous dinosaur) track was part of the top layer of sandstone at the Bone Site, 50 yards to the north. During road construction in 1…
historicalmarkerproject/markers/HM2CJL_late-jurassic-time_Morrison-CO.html
Late Jurassic Time. This is part of the Morrison Formation accumulated around 150 million years ago. Monsoonal (seasonal) rains caused flooding which dotted the terrain with small lakes, ponds, and braided streams. These served as watering holes …
historicalmarkerproject/markers/HM2CJC_rock-deformation_Morrison-CO.html
Rock Deformation. Mountain-building processes generate massive pressures in the earth's crust. Such pressures cause the rock layers to tilt, buckle, or fold and sometimes to break or crack. In addition to the obvious tilting of rocks along the D…
historicalmarkerproject/markers/HM2CGF_bone-deposition_Morrison-CO.html
Bone Deposition. Dinosaur bones were deposited here on the inside of a meander by a fast-flowing stream. This deposit known as a "point bar" grew by the addition of sand, causing growth of the point bar towards the outer bank and downst…
historicalmarkerproject/markers/HM2CEY_the-rocky-mountains_Morrison-CO.html
The high mountains west of here are the beginning of the Rocky Mountains. They are made up of resistant Precambrian granite and gneiss. The prominent red rocks in Red Rocks Park are the Fountain Formation, a series of sandstones and conglomera…
historicalmarkerproject/markers/HM25I7_triceratops-tracks_Golden-CO.html
Triceratops: 30 feet long, 6-12 ton Herbivore Several tracks of Triceratops or a closely related horned dinosaur were discovered in this area. Among horned dinosaurs, Triceratops is the most likely track maker because many of its bones have be…
historicalmarkerproject/markers/HM25I6_palm-fronds_Golden-CO.html
Large palm fronds show that the climate was much warmer than that of today. Other plant and tree types found here, such as extinct relatives of sycamore, walnut, paddle-leafed ginger and an ancient relative of the avocado, lost their leaves s…
historicalmarkerproject/markers/HM25I5_bird-track_Golden-CO.html
Birds are descendants of theropod (meat-eating) dinosaurs and their tracks look similar: three long narrow toes with claw marks. However, bird tracks are generally smaller than most theropod tracks. This print is wider than long and the to…
historicalmarkerproject/markers/HM23ZN_colorado-national-guard-armory_Golden-CO.html
To the south on Arapahoe Street is a distinctive building made of river rock. The Armory was completed in 1913 to house Company A Engineers of the Colorado National Guard, comprised of Colorado School of Mines students. Designer James H. Gow, who…
PAGE 1 OF 7