Articles – Notes

Macadam Paving and Its Significance on Route 66

Macadam paving is a new method of road building. It was invented by a Scottish engineer called John Loudon McAdam in the early 19th century. This technique played a very vital role in constructing Route 66, one of the most famous highways in America. The method used small jagged stones that were compacted together to make a solid and durable surface.

Early roads would become muddy in wet weather or dusty in dry weather. Macadam paving provided a more durable, dependable roadway. Early macadam did not use a binding agent, relying on natural proper alignment of the stones. In later variations, tar or bitumen was added to create “tar-macadam,” or tarmac, onto which the first asphalt roads were built. When Route 66 was established in 1926, much of the highway was either unpaved or covered with dirt and gravel. It was rough going for cars to travel easily. A big improvement for many parts of the highway in those early years, especially country areas where roads were still under construction, was macadam paving.

It produced a superior surface for the growing number of vehicles using the roadway and it provided a drainage advantage as well. The road was now better equipped to handle those weather conditions that could make travel hazardous.

As more cars used Route 66 in the 1930s and 1940s, the road surface was improved. Many parts of Route 66 were changed to asphalt and concrete, which was stronger and gave the driver a smoother ride. But macadam paving helped a lot in the early years of the development of the road. It changed a mix of dirt and gravel roads into a better and easier route to use. Finally, the shift from macadam to superior paving techniques reveals one aspect of the evolution of Route 66. What began as a humble, crude roadway forged for early motorists would develop into one of the most important highways in the United States, connecting urban and rural landscapes from sea to shining sea. Today, when most associate Route 66 with asphalt and concrete paving, this may remain the influential Macadam on the formation of early identity in the famous highway.

Route 66

Dendrites

Dendrite fossils are not actual fossils but mineral formations that display branching, tree-like patterns on rock surfaces. These patterns are called “dendrites,” derived from the Greek word dendron, meaning “tree.” Due to their resemblance to ferns, mosses, or algae, they are often mistaken for fossilized plants.

Formation of Dendritic Patterns

Mineral Deposition: Dendritic patterns form when mineral-rich water percolates through cracks and fissures in rocks. As the water evaporates, minerals like manganese and iron oxides precipitate out of the solution.
Crystallization Process: These minerals crystallize in branching patterns along the rock’s surface or within its layers, creating intricate designs that mimic organic structures.
Environment: Such formations commonly occur in sedimentary rocks like limestone, sandstone, and shale, where groundwater movement is prevalent.

Distinguishing Features

Inorganic Origin: Unlike true fossils, dendrites do not result from the preservation of organic material. They are entirely inorganic, formed solely by mineral processes.
Lack of Cellular Structure: Under magnification, dendrites lack the cellular details that characterize fossilized plant material.
Surface Patterns: Dendritic formations are typically two-dimensional patterns on rock surfaces, whereas fossils often have three-dimensional structures.

Common Misconceptions

Mistaken Identity: The visual similarity to plant life leads many to incorrectly identify dendrites as fossilized flora.
Educational Importance: Understanding dendrites helps in learning how to differentiate between mineral formations and actual fossils, which is crucial in fields like paleontology and geology.

Significance in Geology and Collecting

Scientific Interest: Dendrites provide insights into mineral deposition processes and the geological history of the area where they are found.
Aesthetic Value: Their intricate and visually appealing patterns make dendritic rocks popular among collectors and are often used in jewelry and decorative items.

Examples and Notable Locations

Solnhofen Limestone, Germany: Known for fine-grained limestone that often displays dendritic patterns, sometimes mistaken for fossilized plants.
Utah and New Mexico, USA: Regions where dendritic manganese oxides are commonly found on sandstone surfaces.
Chiastolite Stones: A variety of andalusite that shows cross-shaped (cruciform) patterns due to carbonaceous impurities, sometimes confused with dendritic patterns.

Conclusion

While dendritic patterns, or “dendrite fossils,” captivate the imagination with their lifelike appearances, they are mineralogical phenomena rather than remnants of ancient life. Recognizing the difference between these mineral formations and true fossils enhances our understanding of geological processes and helps prevent misinterpretations in both amateur and professional studies.

References

Mineralogy and Geology Texts: For detailed explanations of mineral formation processes.
Field Guides on Fossil Identification: To learn how to distinguish between fossils and mineral patterns.
Geological Surveys: For information on regions where dendritic formations are prevalent.

Hassayampa River

The Legend of the Hassayampa River in Wickenburg, Arizona, is a fascinating piece of local folklore that captures the imagination of those who hear it. According to the legend, anyone who drinks from the Hassayampa River can never tell the truth. This river, which flows near the historic town of Wickenburg, has been the subject of stories and tall tales among locals and visitors alike.

Wickenburg is a town rich in history, often associated with the early mining and ranching days of the American West. The Hassayampa River, with its sometimes elusive water flow, winds through this rugged landscape, contributing to the area’s mystique and charm. The legend likely originates from the playful exaggerations common among miners and settlers of the time, symbolizing perhaps the transformative nature of the West or the elusive fortunes sought by those who ventured there.

The story of the Hassayampa River is a testament to the creativity and humor of the people in the region. It embodies the spirit of the Old West, where truth could be as variable and shifting as the sands of the desert. Over the years, it has become a cherished part of Arizona’s folklore, reminding us of the colorful history and enduring mysteries of the American Southwest.

Big Boy 4014

The Union Pacific Big Boy 4014 is one of the largest and most powerful steam locomotives ever built. Part of the Big Boy class, it was constructed in the early 1940s by the American Locomotive Company (ALCO) to haul heavy freight over steep grades in the Western U.S., especially in the Wasatch Mountains. These locomotives are huge, measuring over 132 feet long and weighing around 1.2 million pounds.

Big Boy 4014 was retired from service in 1961, but in 2013, Union Pacific reacquired and restored it. Today, 4014 is fully operational and runs on special excursions, thrilling train enthusiasts with massive size and power. Its restoration was a significant feat, marking the return of one of the most iconic steam locomotives in history.

The Big Boy series, including 4014, represents the peak of steam locomotive technology and the golden age of railroading in the U.S.

Amphicyonidae

Bear dogs, or Amphicyonidae, were representatives of an extinct family of carnivorous mammals that lived during the Miocene Epoch. They possessed peculiar features because they combined some aspects of modern bears and dogs; hence, this name was attached to them. Fossils of bear dogs were found in parts of the world; one is Barstow Fossil Beds in California, which is also an important center for paleontologists studying the ancient ecosystems of North America.

Physical Characteristics:

Size: They were very varied in size, from the smallest, which was about the size of modern foxes, to the largest, which rivaled grizzly bears in size and strength.

Appearance: Bear-like bodies, but with powerful jaws and sharp teeth adapted for hunting, while their legs were longer and more dog-like in structure, running and chasing their prey.

Diet: These were carnivorous animals that probably preyed upon smaller mammals and did so perhaps by ambush and endurance hunting, just like the big cats or wolves of today do.

Barstow Fossil Beds: These fossil beds, if situated within the Mojave Desert, have yielded a wide variety of prehistoric animal remains, including those of bear dogs. This is a formerly much more lush environment with forests, rivers, and wetlands that support diverse wildlife.

Miocene Environment: When bear dogs ranged into the Barstow area, it was a temperate region teeming with ancient species such as early horses, camels, rhinos, and mastodons. Bear dogs were likely top predators in this ecosystem.

Evolution: The various fossil discoveries in Barstow will help scientists trace the evolution of flesh-eating mammals. The bear dogs belonged to the early lineage that gave rise to present-day bears, dogs, and all other large predators.

Extinction: Bear dogs flourished for millions of years but died out toward the end of the Miocene Epoch. Their extinction may be related to climate changes and competition with other carnivores, ancestors of modern cats and wolves, which were better adapted to changing environmental conditions.

Importance of the Barstow Fossil Discoveries:

Fossils like bear dogs found around Barstow give rare glimpses into an ancient world. Such finds enable paleontologists to reconstruct the ancient ecosystems of North America and learn more about how animal species, including early carnivores, adapted and evolved.

The bear dog fossils from near Barstow point to the emergence of very diversified ecosystems in which the bear dogs were among the top predators of their time. Their fossils are an important determinant that leads to unraveling their biology and the environment to which they belonged millions of years ago.

Red Hill Cinder Mine

The Red Hill Cinder Mine is an active volcanic site in the Coso Volcanic Field where red and black cinders are extracted from a cinder cone. What makes this spot so unique, however, is volcanic bombs that have been thrown out during previous eruptions-large pieces of solidified lava. These bombs have been picked up and placed around the mining company’s office buildings.

Red Hill is one of the youngest volcanic formations in the area, with an estimated age of less than 10,000 years. A small flank eruption on the cone could have occurred within the last 1,000 years. If you drive south down Highway 395, you can see the small crater from that eruption on the northwest side of the cone.

CEMEX currently mines the Red Hill Quarry on the south flank of the cinder cone, crushing the volcanic rock into scoria for use in road construction and the manufacture of cinder blocks. Larger pieces of the rock are also used for landscaping.

Batteries Go Here

A cloaca is an opening in some animals, like birds, reptiles, and amphibians, where the digestive, urinary, and reproductive systems come together. It’s like a multi-purpose exit, handling waste and reproduction. In most mammals, these functions are separated into different exits, but in animals with a cloaca, everything comes out of the same spot.

Cedar Springs

A tiny town, Cedar Springs, California, existed in the San Bernardino Mountains. Picture a quaint, peaceful village surrounded by towering trees and mountains, where residents go about their everyday routines. However, a major development occurred in the 1970s when engineers built a dam to form Silverwood Lake, resulting in the abandonment of all of Cedar Springs, which was ultimately submerged underwater.

There are no longer any homes or roads in the location once occupied by Cedar Springs; instead, a large and attractive lake now resides there. Silverwood Lake offers opportunities for individuals to fish, boat, camp, or enjoy the outdoors. Despite the town’s disappearance, its natural beauty remains, allowing one to envision what Cedar Springs was like when it was nestled in the mountains.

San Bernardino Mountains

Silverwood Lake

Owens Valley*

Owens Valley happens to be one of the most singular and interesting places in the United States. It is located in the western part of the continent – between the Sierra Nevada and the Inyo Mountains. This valley forms part of the geomorphic province of Basin and Range, characterized by mountains and valleys as unique features resulting from the process of Earth crust movement.

Geomorphology: The Shape of the Land

The Owens Valley lies within crust of the Basin and Range province, which is famous for its “horst and graben” structure. Consider the crust of the earth to be rifting apart: the surface breaks, and some blocks go down while others rise up. This process forms a pattern of highs and lows. Owens Valley is one of these low areas, known as a “graben,” while surrounding mountains are the high areas known as “horsts.” The elevation of the valley varies from about 3000 to 6000 feet and includes flat and gently sloping areas.

Erosion, the wearing away of rocks and soil by water and wind, and deposition combine in the process whereby these materials are laid down in new places. Through such continuous action, an alluvial fan—the fan-shaped deposit of soil and rocks at the base of the mountains—and a basin fill, or a layering of sediments on the floor of the valley, form over time.

Soil and Vegetation: Life on the Land

Soils in Owens Valley vary considerably. On the alluvial fans, Torrifluvents and Torriorthents soils are well drained and support a wide variety of plant life. Elsewhere in the basin-fill areas, the soils may be poorly drained and these areas may support different kinds of plants. There is even dune sand in places!

The vegetation of Owens Valley differs according to soil and location. You might find plants such as saltbush and greasewood that are tolerated on salty soils in the areas of basin fill. On the alluvial fans, there were plants like shadscale and hop-sage that could stand the drier conditions. Higher up on the fans, there is black bush with sagebrush. South of Owens Lake, creosote bush is the predominant plant.

Climate: Hot and Dry

Long-term temperatures and rainfall—Owens Valley has a hot and dry climate. Average annual precipitation, or the amount of rain that falls in an average year, is only about 4 to 8 inches. Most of this rain falls during the winter months. The mean annual temperature varies from 55° to 65° F. Because it is so dry, plants and animals must be tough in order to survive with little water.

Water: The Lifeline

Water plays a major role in the Owens Valley way of life. Along the middle of this long valley runs the Owens River, which furnishes water to many plants, animals, and people. Centuries ago, Owens Lake used to overflow periodically and send water to the neighboring valleys. Nowadays, so much of the Owens River water is exported to Los Angeles that Owens Lake is virtually dry.

Conclusion

Owens Valley is a place both fascinating in geology and ecology. Distinct landform, variety of soils, and flora hardiness testify to the ability of life to adapt to the rigors of heat and dryness. Understanding Owens Valley would help us recognize the sensitive links between land, water, plants, and animals that give this part of the world its special identity.

*AI

California to Salt Lake City

THE OVERLAND MAIL
1849-1869
Promoter of Settlement
Precursor of Railroads by
LE ROY R. HAFEN, PH.D .
Historian, The Stale Historical and Natural History Society of Colorado

The first United States mail between California and Salt Lake City was established in 1851. This route was advertised January 27, 1851, and the thirty-seven bids received ranged from $20,000 for “horseback or two horse coach service,” to $200,000 per year for service with ” 135 pack animals with 45 men, divided into three parties.” One bid was for a four-horse coach with a guard of six men, at $135,000 per year. The lowest bid was accepted and a contract was made in April with Absalom Woodward and George Chorpenning for a monthly service at $14,000 per year; the trip each way was to be made in thirty days. No points were designated at which the route should touch, but it was to go “by the then traveled trail, considered about 910 miles long.”

Chorpenning and his men left Sacramento May 1, 1851, with the first mail. They had great difficulty in reaching Carson valley, having had to beat down the snow with wooden mauls to open a trail for their animals over the Sierras. For sixteen days and nights they struggled through and camped upon deep snow. Upon reaching Carson valley, Chorpenning staked off in the usual western manner, a quarter section of land and arranged to establish a mail station. The town of Genoa, Nevada, grew-up on this site. Chorpenning and several men continued eastward and reached Salt Lake City June 5th, having been delayed somewhat by snow in the Goose Creek mountains.

Throughout the summer, difficulties were experienced with the Indians; and Woodward, who left Sacramento with the November mail, was killed by them just west of Malad River in northern Utah. The December and January mails from Sacramento were forced to return on account of deep snow, but the February (1852) mail was pushed through by way of the Feather River Pass and reached Salt Lake City in sixty days. The carriers endured frightful sufferings; owing to the fact that their horses were frozen to death in the Goose Creek mountains, they had to go the last two hundred miles to Salt Lake City on foot. Permission was obtained from the special agent in San Francisco to send the March mail down the coast to San Pedro and thence by the Cajon Pass and the Mormon trail to Salt Lake City. During the summer of 1852 the service continued to be performed across northern Nevada by way of the Humboldt River; but as winter approached, arrangements were made with the mail agent at San Francisco to carry the Utah mail via Los Angeles during the winter months. The Carson valley post office was supplied monthly by a carrier on snow-shoes. Fred Bishop and Dritt were the first carriers and they were succeeded by George Pierce and John A. Thompson. The latter, “Snowshoe Thompson,” a Norwegian by birth, made himself famous in this section by his feats on snow-shoes during succeeding winters. The shoes used were ten feet long and of the Canadian pattern. He often took one hundred pounds upon the journey between Placerville and Carson, and made the trip in three days to Placerville and the return journey in two days.

With the interruption by bad weather of the mail service east of Salt Lake City, the mail was sent westward to San Pedro, where it was transmitted by steamer to the Atlantic seaboard. This increased the weight of Chorpenning mail from about one hundred pounds to about five hundred pounds. For this additional service Chorpenning made claim and in 1857 received payment on a pro rata basis.

The causes of the irregularity and interruption of the mail service to Utah had not been explained to the Postmaster-general by the Special Agent at San Francisco and so, upon the grounds of the derangement of the service, the Postmaster-general annulled the contract with Chorpenning, and made one with W. L. Blanchard of California. The new contractor was to receive $50,000 per year, and was to maintain a fortified post at Carson valley. Upon learning of this new arrangement in January, 1853, Chorpenning set out for Washington and, after setting forth his case before the new Postmaster-general, was reinstated. A verbal agreement was made that the compensation should be increased to $30,000 per year and permission was given to carry the mails via San Pedro during the winter months.

During the first three years (1851-4) the Utah-California mail was carried except in winter, by the old emigrant route. This route lay from Sacramento
through Folsom, Placerville, along the old road through Strawberry and Hope valleys to Carson valley. From this point it led to the Humboldt, which stream
was followed nearly to its source. Leaving the Humboldt the route led northeastward into southern Idaho in the vicinity of the Goose Creek mountains, and thence southeasterly around the north side of Great Salt Lake to Salt Lake City.

In the lettings of 1854, the Utah-California mail route was changed to run from Salt Lake City over the Mormon trail to San Diego. Chorpenning was again the successful bidder. The mail was to be carried monthly each way, through in twenty-eight days, for a compensation of $12,500 per year. Chorpenning thought it worthwhile to enter a low bid to ensure getting the contract since he expected that the service would probably be increased to a weekly schedule, the time per trip reduced, and the compensation increased.

The service began July 1, 1854, and was to continue for four years. The mail was carried on horseback or on pack mules. During that first summer, Indian difficulties arose and continued at intervals for months. The emigration fell off and expenses on the route increased. Similar difficulties had been encountered by the contractors east of the Rocky Mountains, who appealed to Congress and received increased remuneration by the act of March 3, 1855. Encouraged by their success with Congress, and inasmuch as his difficulties continued, Chorpenning went to Washington and presented his claims in June, 1856. Congress responded with an act for his relief March 3, 1857. It provided that the compensation be increased to $30,000 per year from July 1, 1853, to the termination of the contract in 1858; that the full contract pay be allowed during the suspension of the contract in the spring of 1853; and that the Postmaster-general make an additional allowance on a pro rata basis for the extra service performed prior to 1853. A total of $109,072.95 was allowed and paid under the provisions of this act.

During the four years of the duration of the contract (until July i, 1858), the mail was carried with fair regularity, and often in less than schedule time. The service was usually performed on horseback, but a wagon was used occasionally. The mail of December, 1857, was taken from Salt Lake City to Los Angeles by wagon in twenty-six days, while on horseback the trip often did not consume more than twenty days.

Wells Fargo and Company, Adams and Company, and other express companies maintained express service on the line during this period (1854-8). There was also much freighting and some emigrant travel over the road. The Mormon “State of Deseret” had included the whole of this route with its terminus upon the Pacific Coast. A colony was planted by these pioneers at San Bernardino in 1851 and considerable trade and intercourse was carried-on over this road.

The route was in general that of the present “Arrowhead Trail” automobile road. From Los Angeles the route led to San Bernardino, through Cajon Pass to the Mohave River, which was followed for fifty miles. From the Mohave River the route lay to the north to Bitter Springs, then turned eastward by Kingston Springs to Las Vegas, Nevada. From this famous resting station a dry stretch of sixty miles was crossed leading to the Muddy Creek. After crossing another “bench” the Virgin River was reached, and this stream was followed to Beaver Dams, Arizona. Leaving the Virgin River the road crossed the “slope” and over a little mountain range to the Santa Clara Creek, which stream was followed to the vicinity of the famous Mountain Meadows. From Mountain Meadows the route led to Cedar City and thence almost due north through the Mormon settlements of Parowan, Beaver, Fillmore, Nephi, Payson, Provo, and Lehi to Salt Lake City.”

Before the termination of the contract on this route the policy of extensive increases in the western mail lines was inaugurated, and partisans of the “Central Route” via Salt Lake City and across northern Nevada were demanding service upon that more direct route to San Francisco. Accordingly, in 1858 this Los Angeles to-Salt Lake City route was discontinued and the original route of 1851 was re-established and put upon an improved basis.

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