Moving American progress westward images of Denver and the Rockies in popular culture

"From the 1859 gold rush through the early 1900s, popular press images linked Denver’s civic development, capitalist values and culture to the Rocky Mountains. These prints of a wilderness city sending pioneers and prospectors into the Rockies appeared in national newspapers, magazines, settlement manifestos, railroad guidebooks and tourist pamphlets. Readers were saturated with illustrations associating Denver with prosperity and rejuvenated health"-

Portrait of Josephine Evans: 1887-1969

The genre of historical women's biography has a moderately short history, and has evolved into the twenty-first century as women's studies. Simultaneously, biography has become a multifaceted genre that keeps a close relationship between biography, history, women's studies, and cultural studies. The biography of Josephine Evans embraces the genre as a vehicle to enlighten broader historical issues, as the life of an ordinary woman and her position in an historic Colorado family is revealed. Her story contributes to the history of women's roles and rights in the late nineteenth and twentieth century as her life story is representative of the time period. This biography of Josephine Evans is an illustration of a biography written from personal letters, diaries, and recollections.

History of the city of Denver, Arapahoe County, and Colorado : containing a history of the state of Colorado ... a condensed sketch of Arapahoe County ... a history of the city of Denver ... biographical sketches ...

The historical portion of this work is by W.B. Vickers--Cf. Pref.

A history of the Sixty-sixth Field Artillery Brigade, American Expeditionary Forces, composed of the 146th Field Artillery and the 148th Field Artillery; National Guard troops from the western states of Colorado, Wyoming, Washington, Idaho, Oregon, New Mexico.

"Committee charged with the compliation ... Major W. A Sawtell ... Capt. Frank R. Jeffrey ... Lieut. W. S. Griscom ... Lieut. Wm. R. Wright ... brigade historian."--p. 371.

A look back; a 75 year history of the Colorado Game, Fish and Parks Division, 1897-1972.

Editing: Vince Prichard, Pete Hansson, Bettie Mock.

Decompression during Late Proterozoic Al2SiO5 Triple-Point Metamorphism at Cerro Colorado, New Mexico

An outstanding problem in understanding the late Proterozoic tectonic assembly of the southwest is identifying the tectonic setting associated with regional metamorphism at 1.4 Ga. Both isobaric heating and cooling, and counter-clockwise looping PT paths are proposed for this time. We present a study of the Proterozoic metamorphic and deformation history of the Cerro Colorado area, southern Tusas Mountains, New Mexico, which shows that the metamorphism in this area records near-isothermal decompression from 6 to 4 kbar at ca. 1.4 Ga. We do not see evidence for isobaric heating at this time. Decompression from peak pressures is recorded by the reaction Ms + Grt = St + Bt, with a negative slope in PT space; the reaction Ms + Grt = Sil + Bt, which is nearly horizontal in PT space; and partial to total pseudomorphing of kyanite by sillimanite during the main phase of deformation. The clearest reaction texture indicating decompression near peak metamorphic temperature is the replacement of garnet by clots of sillimanite, which are surrounded by halos of biotite. The sillimanite clots, most without relict garnet in the cores and with highly variable aspect ratios, are aligned. They define a lineation that formed with the dominant foliation. An inverted metamorphic gradient is locally defined by sillimanite-garnet schists (625 degrees C) structurally above staurolite-garnet schists (550 degrees C) and implies ductile thrusting during the main phase of deformation. The exhumation that led to the recorded decompression was likely in response to crustal thickening due to ductile thrusting and subsequent denudation.

Aeolian dust in Colorado Plateau soils: Nutrient inputs and recent change in source

Aeolian dust (windblown silt and clay) is an important component in arid-land ecosystems because it may contribute to soil formation and furnish essential nutrients. Few geologic surfaces, however, have been characterized with respect to dust-accumulation history and resultant nutrient enrichment. We have developed a combination of methods to identify the presence of aeolian dust in arid regions and to evaluate the roles of this dust in ecosystem processes. Unconsolidated sandy sediment on isolated surfaces in the Canyonlands region of the Colorado Plateau differs greatly in mineralogical and chemical composition from associated bedrock, mainly aeolian sandstone. Detrital magnetite in the surficial deposits produces moderately high values of magnetic susceptibility, but magnetite is absent in nearby bedrock. A component of the surficial deposits must be aeolian to account for the abundance of magnetite, which formed originally in far-distant igneous rocks. Particle-size analysis suggests that the aeolian dust component is typically as much as 20–30%. Dust inputs have enriched the sediments in many elements, including P, Mg, Na, K, and Mo, as well as Ca, at sites where bedrock lacks calcite cement. Soil-surface biologic crusts are effective dust traps that apparently record a change in dust sources over the past several decades. Some of the recently fallen dust may result from human disturbance of land surfaces that are far from the Canyonlands, such as the Mojave Desert. Some land-use practices in the study area have the potential to deplete soil fertility by means of wind-erosion removal of aeolian silt.