Saturday, March 21, 2020
Geologic Destinations for California Tourists
Geologic Destinations for California Tourists If youre going to California, be sure to put some of these geologic attractions on your must-see list. Volcanic Sites You might not think of the Golden State as a volcanic wonderland, but it surely is. Here are just a few of the most noteworthy places. Medicine Lake volcano is a subdued caldera in the northeastern highlands, full of diverse volcanic landforms including spectacular lava tubes. Its preserved in Lava Beds National Monument. is where Californias most recent eruption was, in 1914-1917. Thats in a National Park. may be Americas most beautiful volcano, and a splendid example of a young stratovolcano. The Morros, near Morro Bay and San Luis Obispo, are a chain of nine volcanic necks, remnants of ancient seafloor volcanoes. Theres nothing else like them- and there are also beaches and a haunted hotel. Devils Postpile is a good destination if you want a break from climbing in the Sierra Nevada. Its a textbook locality for columnar jointing, which happens when a thick body of lava slowly cools and naturally fractures into hexagonal columns like a box of pencils. Devils Postpile is in a National Monument. lies in the desert beyond the Sierra, a place where a now-vanished river scoured flows of basalt lava into fantastic shapes. Combine it with a visit to Manzanar and other highlights of the Owens Valley. More young volcanoes sit in the Mojave south of Baker. In the San Francisco Bay area, Oaklands Round Top is a dissected volcano exposed by quarrying and preserved as a regional park. You can even get there by city bus. Tectonic Highlights Death Valley is one of the worlds premier localities for seeing fresh crustal extension, which has dropped the valley floor below sea level. Death Valley is a National Park and a nice day trip from Las Vegas. The San Andreas fault and other major faults like the Hayward fault and Garlock fault are highly visible and easy to visit. Do some reading beforehand in one or more of several good books. is a tremendous graben, downdropped between the Sierra Nevada and the White Mountains. Its also the site of the great 1872 earthquake. Just a couple hours drive away is the hauntingly familiar Red Rock Canyon State Park. Point Reyes is a large chunk of land that has been carried on the San Andreas fault (along with Bodega Head) all the way up from southern California beyond San Francisco. That displaced crustal block is in a National Park. For a real geologic thrill, see Point Lobos near Monterey, almost 200 kilometers away, where the same rocks appear on the faults other side in a state park. The Transverse Ranges are a great discontinuity in the fabric of California and one of Americas most dramatic landscapes. State Route 99/Interstate 5 over the Tejon Pass, between Los Angeles and Bakersfield, will take you across it. Or take a similar trip on State Route 33, farther west. Lake Tahoe is a large downdrop basin in the High Sierra, filled with one of Americas finest alpine lakes, and is also a prime playground at all times of year. are widespread in California, where decades of leading research have not exhausted the knowledge to be gained or the enjoyment to be had from these unsung witnesses to plate tectonics. The Coast Beaches, coastal cliffs, and estuaries up and down the state are scenic treasures and geologic lessons. See my selection of geologically interesting places.à Beaches need no introduction, but theres more to them than sand and sea. Laguna Beach in the south and Stinson Beach and little Shell Beach in the north are examples that are full of geological interest. Other Geologic Features The Central Valley may seem like something to drive through as fast as possible on your way somewhere else, but its full of geological interest if you take the time to poke around. The Channel Islands are known to geologists as the California Continental Borderland- and a brand-new National Park. Petroleum is a big part of California geology. Visit a natural oil seep at Coal Oil Point in Santa Barbara, the spectacular tar seepsà at nearby Carpinteria Beach or the famous tar pits of Rancho La Brea in Los Angeles. In the southern San Joaquin Valley, drive through the Kettleman Hills to see the heart of the industry- in fact, the original asphalt seep at McKittrick and the site of the great Lakeview oil gusher are just off the highway. Joshua Tree is a distinctive desert area displaying many standout features created by arid erosion. Its protected as a National Park. Playas are strewn all over the great deserts of southern California: Owens dry lake, Lucerne dry lake, Searles lake (with its tufa towers), and El Mirage are just a few. What is a desert without sand dunes? The booming Kelso Dunes are an essential stop in the Mojave, south of Baker. If youre nearer Mexico, try the Algodones Dunes instead. Theyre the largest dunefield in California. Yosemite Valley, home of Half Dome, is an unforgettable collection of landforms created by crustal denudation and glacial action. Its also the worlds first place set aside to become a National Park. For more ideas, see the California Geology category
Wednesday, March 4, 2020
Frederick McKinley Jones
Frederick McKinley Jones Frederick McKinley Jones was one of the most prolific black inventors and held over 60 patents at the time of his death. Some of his most important work changed the way we store and transport our food, and altered the transportation and grocery industries forever. Fast Facts: Frederick McKinley Jones Born: May 17, 1893 in Cincinnati, OhioDied: February 21, 1961 in Minneapolis, MinnesotaKnown For: Inventor who revolutionized the refrigeration industry and held over 60 patentsEducation: Orphaned at a young age, Jones had little formal education, but he taught himself automobile mechanics and became an engineerAwards and Honors: First African American elected to theà Americanà Societyà of Refrigeration Engineers, and first African American to be awarded a Nationalà Medalà of Technology (posthumously)à Early Years A native of Cincinnati, Ohio, Frederick McKinley Jones was born on May 17, 1893, to an Irish father, John Jones, and an African American mother. By the time he was 7 years old, his mother had deserted the family, and his father sent him to live with a Catholic priest in a rectory in Covington, Kentucky, just across the Ohio River from Cincinnati. While in Kentucky, young Fredericks father passed away, essentially leaving him an orphan. When he was 11, Jones decided hed had enough of living with the priest, so he ran away and returned to Cincinnati. During his teen years, he found work doing odd jobs around the city, and soon found he had a natural aptitude for automobile mechanics. He also began to read a lot, although he had little formal education. At 19, he traveled north to a farm in Hallock, Minnesota, where he took a job doing mechanical labor on the farm machinery, and soon was able to obtain an engineering license. When war broke out, Jones enlisted in the U.S. Army, where he was in high demand for his mechanical abilities. He spent much of the war making repairs to machines and other equipment, as well as maintaining communications systems at the front. After his military service ended, he returned to the farm in Minnesota. Inventions While living at the Hallock farm, Jones began to take an interest in electronics, and read as much as he could on the subject. According to Biography.com, When the town decided to fund a new radio station, Jones built the transmitter needed to broadcast its programming. He also developed a device to combineà movingà pictures with sound. Local businessman Joseph A. Numero subsequently hired Jones to improve the sound equipment he produced for the film industry. Numeros company, Cinema Supplies, was excited about Jones inventions, and within a few years, the two of them would form a partnership. Frederick McKinley Jones, inventor, refrigeration expert and cofounder of Thermo King Corp., holding a model of his refrigerated railroad car. Bettmann Archive / Getty Images Mobile Refrigeration In the 1930s, it was risky to transport perishable products. Grocery shipments were typically limited to short distances; ice melted quickly, and any sort ofà electronic refrigeration unit required a layover at a power source, which delayed delivery time. However, by 1938, Jones believed he had found a solution, and in 1940 he obtained a patent for the first practical transport refrigeration unit for the trucking industry. Jones designed a portable air-cooling device, which included an undercarriage gasoline motor sturdy enough to handle the jolts of long-distance travel. Early modifications made the units even smaller and lighter, and moved them to the over-the-cab mount that is still in use on refrigeration trucks today. Suddenly, people in rural or isolated areas could have access to fresh produce, meat, and dairy items all year long. Further advancements soon led to standardized refrigerated containers which could be utilized on a truck, ship, or train, all without the need of unloading and repacking. The transport refrigeration industry boomed with the creation of these refrigerated boxcars, all of which used Jones technology. Together with Numero, who sold Cinema Supplies, Jones formed the U.S. Thermo Control Company, which grew rapidly in the 1940s. During World War II, the company provided refrigeration units that were used to help preserve not only food, but also blood and medicine for the military. In addition, U.S. Thermo Control cooling products were built into the cockpits of bombers and ambulance planes, and also provided air conditioning to personnel in field hospitals. Near the end of the war, Jones became the first African American inducted into theà Americanà Societyà of Refrigeration Engineers, and by 1949, U.S. Thermo Control- which later became Thermo King- was worth several million dollars. Throughout the 1950s, Jones did consultant work for the Department of Defense, the Bureau of Standards, and other branches of the government. Although he is best known for his work with refrigeration units, during his lifetime, Frederick Jones patented over 60 inventions. He created X-ray machines, small and large engines, and sound equipment for radio and film production, generators, and even a machine that dispensed paper tickets. Jones passed away in Minneapolis, after a battle with lung cancer, on February 21, 1961. In 1977, he was inducted into the Minnesota Inventors Hall of Fame. Thirty years after his death, President George H.W. Bush awarded the Nationalà Medalà of Technology posthumously to Jones and Numero, presenting the awards to their widows in the White House Rose Garden. Jones was the first African American to receive the Nationalà Medalà of Technology. Sources ââ¬Å"Frederick Jones.â⬠à Biography.com, AE Networks Television, 19 Jan. 2018, www.biography.com/people/frederick-jones-21329957.ââ¬Å"Frederick McKinley Jones.â⬠à The Columbia Encyclopedia, 6th Ed, Encyclopedia.com, 2019, www.encyclopedia.com/people/science-and-technology/technology-biographies/frederick-mckinley-jones.ââ¬Å"Frederick McKinley Jones.â⬠à Invent.org, National Inventors Hall of Fame, 2007, www.invent.org/hall_of_fame/343.html.ââ¬Å"Frederick McKinley Jones: How Has He Transformed the Scene?â⬠à Richard G. (Gurley) Drew, www.msthalloffame.org/frederick_mckinley_jones.htm.
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