Categories
Colorado State Publications Blog

How Geology Helped Build the Moffat Road

Our library recently received a fascinating new document for our collection that will be of interest to historians researching Colorado’s railroads as well as to those interested in our state’s geology and mineral resources. Exactly one hundred years ago, in 1918, a special committee of the Denver Civic and Commercial Association asked State Geologist Russell […]

Categories
Colorado State Publications Blog

Is Your House on Shaky Ground?

Ground subsidence problems are very real in Colorado. Whether from naturally occurring elements in the soil or from the effects of Colorado’s mining history, the ground in certain parts of Colorado is susceptible to settling, collapsing, expanding, heaving, or swelling, all of which can have potentially hazardous effects on structures. So how do you know […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Colorado Yule Marble

Lincoln Memorial. Did you know that the Tomb of the Unknown Soldier and the Lincoln Memorial in Washington, D.C. are constructed of marble quarried here in Colorado? The stone comes from the Colorado Yule Marble quarry in the Crystal River valley near Marble, between Aspen and Carbondale. Colorado Yule marble, named for nearby Yule Creek, […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: "Mineral and Water Resources of Colorado," 1968

Fifty years ago Colorado’s two U.S. Senators, Gordon Allott and Peter Dominick, requested the State of Colorado and the U.S. Geological Survey to publish Mineral and Water Resources of Colorado.  “The importance of both of these vital resources to the economic well-being of Colorado cannot be overestimated,” Allott wrote in the report’s foreword.  “I requested […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Uranium Mining

Uranium was discovered in southwestern Colorado in the late nineteenth century.  It comes from carnotite ore, which also produces vanadium.  When these elements were first mined, vanadium was considered to be the more valuable of the two; it was used as an alloy to strengthen steel.  In 1921 the Colorado Geological Survey issued Radium, Uranium, […]

Categories
Colorado State Publications Blog

Colorado Coal Resources

Coal is one of Colorado’s most significant mineral resources, and over the years has played an important part in our state’s history and economy.  You can learn about Colorado coal in numerous publications available from our library.  Some highlights from our collection include General resources: 2006 Colorado Coal Fact Sheet  Active/Licensed Coal Mines in Colorado, […]

Categories
Colorado State Publications Blog

All About Pikes Peak

Pikes Peak as seen from Garden of the Gods.  Photo courtesy Colorado Tourism Office. Without a doubt, it’s Colorado’s most famous mountain.  And while it’s neither the tallest mountain in Colorado nor the most difficult to scale, Pikes Peak is famous for its visibility from the plains, its use as a symbol of the 1859 […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Leadville Metals Exposure Study

Leadville is one of Colorado’s most historic mountain towns.  Though a small mountain town today, in the 1870s and 1880s Leadville rivaled Denver for the state’s most prestigious city and many millionaires were made through Leadville’s silver mines.  Following the Crash of 1893, most of Leadville’s silver mines were abandoned, although other mining activities such […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: The White Ash Mine Disaster

This fall the Colorado School of Mines unveiled a new memorial dedicated to the victims of the White Ash Mine disaster of 1889.  Ten miners lost their lives in the accident near Golden, Colorado. The White Ash Mine was located adjacent to the Loveland Mine, which had been shut down in 1881 following a fire.  […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Oil Shale

In 1921 the Colorado Geological Survey published a bulletin entitled Oil Shales of Colorado.  According to the report, Pennsylvania and nearby states dominated the petroleum extraction industry in the mid-nineteenth century, but as drilling declined at the same time that demand increased, Colorado and other western and mid-western states looked to Scotland and France, who […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Molybdenum

When most people think of Colorado mining, they think of gold or silver, or maybe coal.  But one of Colorado’s most significant mineral resources of the past century is molybdenum.  Today, however, demand for “moly” is declining.  Plans were recently announced to shutter Clear Creek County’s huge Henderson Mine — the world’s largest primary producer […]

Categories
Colorado State Publications Blog

Fracking: Risk to Homes and the Environment

Today’s Denver Post headlined “Colorado residents push to protect homes, river from fracking,” which discusses the use of state rules that were established by recommendations from a 2014 task force.  If you’re looking for the task force’s report, which does not appear to be linked to in the Post article, you can find it here.  […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Diamonds in Colorado

Did you know that Larimer County had a diamond mine?  The Kelsey Lake Mine was operational from 1996 to 2001.  During that time period, in 1999, the Colorado Geological Survey released What Are Diamonds?, an issue of their popular Rock Talk series.  This publication discussed Northern Colorado’s State Line Kimberlite District and the Kelsey Lake […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Oil and Gas Fields of Colorado

Most Coloradans know that oil and gas production has skyrocketed in Colorado, but a 1975 resource from the Colorado Geological Survey illustrates the industry’s development visually and using statistics.  Oil and Gas Fields of Colorado includes two parts:  a map, and a book of statistical data.  You can see how much the industry has expanded […]

Categories
Colorado State Publications Blog

Volcanoes and Volcanic Activity

Volcanoes in Colorado? While we don’t have volcanoes in Colorado today, volcanoes certainly played a role in the geological formation of the area.  Evidence of volcanoes can be found as close to Denver as Dinosaur Ridge.  In the Colorado Geological Survey’s Dinosaurs in Our Backyard:  A Dynamic Visit to Dinosaur Ridge, Fossil Trace and Red […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: 1882 Colorado Earthquake

Earthquakes in Colorado?  Yes, earthquakes are certainly possible in Colorado, and on November 7, 1882, Colorado was hit by an earthquake thought to be centered in the northern Front Range.  A century later, in 1986, the Colorado Geological Survey published a report, An Interpretation of the November 7, 1882 Colorado Earthquake by Robert M. Kirkham […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Colorado Rocks and Minerals

Back in 1913, mining played an important role in Colorado’s economy and employed thousands of workers.  Hundreds more were made wealthy by owning and investing in Colorado’s mines.  Therefore it is no surprise that in that year the Colorado Geological Survey published a book entitled Common Rocks and Minerals:  Their Occurrence and Uses.  As suggested […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: First Report of the Colorado Geological Survey, 1908

The very first report of the Colorado Geological Survey covered the activities of the year 1908.  In addition to giving some information on the geological landscape of Colorado, the report also offers a history of the agency up to that time.  According to the report, the Territorial Legislature had established the office of State Geologist […]

Categories
Colorado State Publications Blog

Time Machine Tuesday: Oil and Gas in Colorado, 1925

Where was oil found in Colorado in the early days of the automobile?  How do different parts of the state compare in oil and gas production based on geological epochs?  A 1925 map (reprinted in 1984) from the Colorado Geological Survey answers these questions and more.  Although the early map did not use color, it […]

Categories
Colorado State Publications Blog

Colorado Points of Interest

As you travel through Colorado, you will find numerous markers designating points of interest.  Some of these are historical, and others geological. Historical – History Colorado (formerly the Colorado Historical Society) places and maintains point of interest markers in places where important historical events occurred around the state.  Our library recently acquired an interesting Historical Society publication done in 1972.  […]

Categories
Colorado State Publications Blog

Oil and Gas Resources

One of the specialties of the University of Colorado Law School is natural resources law, and the School’s Getches-Wilkinson Center for Natural Resources, Energy, and the Environment is sponsoring the Intermountain Oil and Gas BMP Project.  The Project’s website features a helpful resources page on their website that includes information on oil and gas development, GIS, […]