Category: Geology

Mojave Desert Geology

Introduction:

Ryan Mountain, Joshua Tree National Park

The Mojave Desert, located in the southwestern United States, is known for its vast arid landscape and unique geological formations. Let us now look at Mojave Desert geology. We will explore its history, distinctive landforms, and the forces that have shaped this remarkable desert ecosystem.

Ancient History:

Afton Canyon, Mojave River

The geological history of the Mojave Desert dates back millions of years. It was formed through a complex interplay of tectonic forces, erosion, and climatic changes. The Mojave Desert is part of the Basin and Range Province, characterized by alternating mountain ranges and valleys. Over time, these forces have sculpted the desert’s diverse topography, creating a mesmerizing tapestry of geological wonders.

Distinctive Landforms:

Kelso Dunes, Mojave National Preserve

The Mojave Desert is home to many distinctive landforms that capture geologists’ and nature enthusiasts’ imaginations. One such feature is the Mojave River, which runs through the heart of the desert, shaping its landscape and supporting its own ecosystem. Another notable landform is the Kelso Dunes, towering sand dunes that shift and change with the wind, creating an ever-changing desert scene.

Example of faulting and jointing in granite. Geology Tour Road #6, Joshua Tree National Park
Geology Tour Road stop #6, Joshua Tree National Park

Joshua Tree National Park, located within the Mojave Desert, is renowned for its iconic Joshua trees, which dot the barren landscape. These trees are adapted to the harsh desert environment and symbolize resilience in the face of adversity. The park also boasts mesmerizing rock formations, such as Hidden Valley and Jumbo Rocks, which showcase the desert’s ancient geological past.

Forces of Shaping:

Rainbow Basin photo
Rainbow Basin, Barstow, Ca.

Several key forces have shaped the Mojave Desert’s geological landscape. The San Andreas Fault, a major tectonic boundary, runs through the region, causing periodic earthquakes and contributing to the uplift of mountain ranges. Erosion, primarily driven by wind and water, has significantly sculpted the desert’s landforms, creating deep canyons, rugged cliffs, and intricate rock formations.

Amargosa River
Amargosa River

The climate also shapes the Mojave Desert’s geology. The region experiences extreme temperature fluctuations, with scorching hot summers and chilly winters. These temperature extremes and sporadic rainfall contribute to rock weathering and erosion and the formation of unique geological features.

Conclusion:

West Fork, Mojave River
West Fork, Mojave River

The Mojave Desert stands as a testament to the immense power of geological forces and the intricate beauty they can create. From its ancient history to its distinctive landforms, the desert offers a glimpse into the Earth’s ever-evolving landscape. As we explore the Mojave Desert’s geology, we gain a deeper appreciation for the natural wonders that surround us and the forces that have shaped them over millions of years.

Digital Desert: An Oasis of Limitless Creativity

Introduction:

In the vast realm of digital art, few artists can claim to have revolutionized the medium quite like Walter Feller’s. With his groundbreaking project, aptly named the “Digital Desert,” Feller has created a virtual oasis of creativity that pushes the boundaries of what is possible in the digital world. In this post, we will explore the captivating world of Walter Feller’s Digital Desert and delve into the mesmerizing beauty that lies within.

Unveiling the Digital Desert:

The Digital Desert is not just a collection of digital vintage/historical and contemporary works but an immersive experience that transports viewers into a realm where contemporary reality and history blend seamlessly. Feller has meticulously crafted a vast landscape within the digital realm, using his exceptional technical skills and boundless artistic vision. The result is a breathtaking desert expanse teeming with dunes, majestic rock formations, and an ever-changing sky that displays nature’s nuances.

Exploring the Creative Oasis:

Within the Digital Desert, Feller’s creativity knows no bounds. It is a space where traditional artistic techniques merge with innovative digital tools. Each artwork within the Digital Desert is an awe-inspiring masterpiece, meticulously crafted with attention to detail and an unwavering dedication to perfection. From hyper-realistic landscapes, Feller’s artistry encompasses a vast array of styles and themes, leaving viewers captivated and inspired.

The Role of Technology:

Feller’s Digital Desert would not be possible without the technological advancements that have paved the way for digital art to flourish. Through his mastery of digital tools, Feller has harnessed the power of software and hardware to create art that pushes the boundaries of imagination in creating a historical model. The Digital Desert serves as a testament to the limitless possibilities that technology offers to historians and artists, allowing them to bring their visions to life in once unimaginable ways.

Impact and Influence:

Walter Feller’s Digital Desert has garnered widespread acclaim and has left an indelible mark on the digital art community. His work has inspired countless artists to explore digital art possibilities and opened up new avenues for creative expression. Feller’s unique ability to seamlessly blend traditional artistry with cutting-edge technology has set a new standard in digital art, making him a true pioneer.

Conclusion:

Walter Feller’s Digital Desert is a testament to the power of human creativity and the boundless possibilities within the digital realm. Through his awe-inspiring artworks, Walter Feller has created a virtual oasis that captivates viewers and pushes the boundaries of what is possible in digital art. The Digital Desert is a testament to Feller’s unparalleled talent, technical skill, and unwavering dedication to his craft. As we venture further into the digital age, the legacy of Walter Feller and his Digital Desert will undoubtedly continue to inspire and shape the future of art and internet development.

Wrong-Way River

by walter feller

Mojave River

In 1852 a survey was made of the southwestern edge of the Mojave Desert. The Old Spanish Trail # had become a wagon road bringing thousands of pioneers to the west and developed as a supply route between Los Angeles and Salt Lake City. The survey was as accurate as any at that time and followed the trail from near the top of the Cajon Pass to a point where the trail leaves the Mojave River near Fishponds. The trail to Salt Lake continues north as we know it, but the river flowing east on this map bears southeast and empties into the Colorado River. At the time it was thought the Mojave (spelled Mohahve on the map) River followed this course. It did not. There was no Mojave Road in 1852 and not many Americans had traversed that portion of the desert. As we now know the Mojave River cuts through Afton Canyon and then disappears into the sink of the Mojave before it reaches Soda Lake.

The Williamson survey the next year in 1853 begins to correct the true ancient course of the river as it would have found its way to converge with the Amargosa River and empty into Death Valley’s Lake Manly via Soda Lake, Silver Lake, Silurian Lake, and Salt Springs.

-End –

Soggy Dry Lake

Soggy Dry Lake – Johnson Valley

Playa formation – “A playa is a dry, vegetation-free, flat area at the lowest part of an undrained desert basin. It is a location where ephemeral lakes form during wet periods, and is underlain by stratified clay, silt, and sand, and commonly, soluble salts. Playas occur in intermountain basins throughout the arid southwestern United States. Although playas may appear as featureless plains, they are rich in features and characteristics that can reveal information about climates, past and present. “

Rand Schist

Rand Schist of Rand Mountains, Schistose rocks of Rand Mountains described briefly ·by Hess (1910, p.28-29, 46) and by Hershey (1902a, p. 273); named, described, and mapped as Rand Schist by Hulin ( 1925,p. 23-31, pl. 1), and officially adopted for use in this report.

Rand Schist folded into anticlinal arch plunging gently westward as indicated by foliation attitudes (figs. 3, 4). On north, schist overlain by gneissic rocks (Johannesburg Gneiss of Hulin), separated by possible fault or thin zone of cataclastic(?) transitional rock; on south and near Randsburg, schist intruded by quartz monzonite; extends unknown distance westward under ·alluviated valley, possibly to Garlock fault. Possibly 10,000 feet of schist exposed; lithology identical to that of Pelona Schist of Sierra Pelona and of Tehachapi Mountains; gray schist, predominating over green schist, contains occasional pods of fibrous actinolite schist; thin layers of quartzite and of marble, mostly in southern and western exposures. In exposures northeast of Johannesburg, albite content of schist increases to 75 percent.

Type locality of Rand Schist designated as generally north-dipping section in Rand Mountains (fig. 4), from quartz monzonite intrusion just south of Randsburg northward to contact with overlying(~) gneiss about 3 miles north of Randsburg.

From;

Areal Geology of the Western Mojave Desert California
By THOMAS W. DIBBLEE, ]R.
GEOLOGICAL SURVEY PROFESSIONAL PAPER 522 – 1967

Afton Canyon

Afton Canyon Natural Area

Afton Canyon is a scenic and geologically interesting area located in the Mojave Desert of Southern California, USA. It is often called the “Grand Canyon of the Mojave” due to its impressive and rugged landscapes. One of the notable features of Afton Canyon is its association with the Mojave River.

The Mojave River runs through Afton Canyon, creating a unique riparian (riverbank) environment amid the desert. The river, although intermittent in some sections, has carved a deep and narrow canyon through the surrounding sedimentary rocks, exposing colorful layers of sediment and providing a habitat for various plant and animal species.

Afton Canyon is part of the Mojave National Preserve, a unit of the National Park Service. The area is popular for outdoor activities such as hiking, bird watching, and camping. The canyon also features a historic railroad route, including a section known as the “Afton Canyon Natural Area,” which showcases the old railway trestle that spans the Mojave River.

The geology of Afton Canyon is noteworthy, as it exposes layers of sedimentary rocks, including sandstone and mudstone, which tell a story of the region’s geological history. The canyon’s formation is attributed to the erosive power of the Mojave River over time.

Visitors to Afton Canyon can explore its scenic beauty, enjoy recreational activities, and learn about the unique geological and natural features that make this area a special part of the Mojave Desert.

Light curve