Archive for the ‘Desert Life’ Category

Fossiliferous

Tuesday, October 6th, 2009

Within the confines of the Anza-Borrego Desert State Park are one of the richest and most varied fossil repositories (for its time) in all anza_borrego_desert_state_park_san_diegothe Western Hemisphere. The finds span most of the last 7 million years, and they include more than 550 types of plants and animals, ranging from microscopic pollen and water fleas to giant mammoths and ground sloths, ancient camels and jaguars, sabertooth cats, and the largest bird ever to fly over North America.  Though the advent of fall and cooler temperatures might make a trip to the desert begin to seem reasonable again, most visitors won’t discern much — if any — of this paleontological wealth. But I’ve discovered a wonderful key to accessing it. 

It’s Fossil Treasures of the Anza-Borrego Desert. Released a few years ago by that local trove of  natural scientific treasures, Sunbelt Publications, and edited by paleontologist George T. Jefferson and geologist Lowell Lindsay, the almost 400-page-long tome isn’t exactly bedside reading. Its 20 essays are highly technical, using language that verges at times on the impenetrable. But they’re gorgeously illustrated with hundreds of drawings, paintings, and photographs. These supplement specific points made in the text, but for me they also drive home a bigger message. The juxtaposition of so many fossils and fossil-fragment photos with drawings of the creatures from which they came serves as a bracing reminder of the staggering amounts of dry, dusty, painstaking field work — coupled with scientific sleuthing and deduction — that had to be carried out to advance our present knowledge of that 7 million-year-long story.

desert-fossils-book-coverEvocative in a different way are five full-color paintings of paleolandscapes representing the way parts of the present-day park would have looked at times ranging from 1 to 5 million years ago. The next time I’m in the desert, they’ll help me summon up that lush teeming past.

If there’s more than I care to know about, say, the fossil ark shells of the Imperial Group or the intermediate tubucle near the articulation of Equus simplicidens’s humerus with its scapula, the book also includes several excellent sub-essays on broader aspects of paleontology. How do you identify a 3-million-year-old piece of wood that’s turned into stone? What techniques do paleontologists currently use to date fossils? And why do scientists think all the local members of the camelid family (the richest assembly of pre-camels anywhere on earth) went extinct in North America?  Now I know.

Dark News for the Denizens of Borrego

Tuesday, August 4th, 2009
Photograph by Dennis Mammana of polar star trails taken from Borrego Springs

Photograph by Dennis Mammana (www.dennismammana.com) of polar star trails taken from Borrego Springs

Residents of Borrego Springs Friday got the news many had long been hoping for — namely that the town has just been designated an International Dark Sky Community by the International Dark-Sky Association. An organization with members in 70 countries that lobbies against light pollution and works to promote outdoor lighting that’s friendly to both backyard and professional astronomers, the IDA in 2001 named Flagstaff the first such community in the world. Now the local desert town can boast that it’s the second (and the first to be recognized in California).

It’s hardly the first time the town has won recognition for the purity of its darkness. In 2003, USA Today included it among 10 of the best star-gazing spots in America, and as I mentioned recently, the town also acquired an additional astronomical resource when professional astronomer Dennis Mammana decided to make Borrego the base of his global teaching and photographic work. Mammana points out that Southern California has one of the densest concentrations of amateur astronomers on Earth, and many of those folks have long appreciated the extraordinary opportunities presented by the state park.

To win the IDA honor, the Borrego Springs townsfolk made a number of changes to protect their natural resource: switching to low-pressure sodium light and fixtures that block light from escaping out the tops and sides, adjusting an aircraft beacon at the local airport, and so forth.  Fittingly, the upcoming 44th annual Borrego Days Desert Festival this October has “Starry Starry Nights”  for its theme; Mammana will be the Grand Marshall.

Stellar

Wednesday, July 1st, 2009
Dennis Mammana

Dennis Mammana

I’m always amazed by how easy it is for me to ignore the universe.  Not to mention the Milky Way. Or even the solar system. Sure I’m aware of the sun, but all the rest that’s up there — the incomprehensible distances, the astounding numbers –  I somehow find easy to forget.  That’s why attending a program like the one presided over by Dennis Mammana the other day feels a bit, to me, like going to church.
 
In an area (Southern California) rich in astronomers and astronomical resources, Mammana has to rank among the most valuable. He’s worked at the Smithsonian’s National Air and Space Museum and the University of Arizona. Then he served as the resident astronomer at San Diego’s Reuben  H. Fleet Science Center. Six years ago, he stepped down from that position and moved out to where the darkest skies in San Diego County most consistently can be found –  in the desert. There he seems to have created a thriving career as a freelance astronomer: delivering lectures, courses, and workshops; writing his nationally syndicated “Stargazers” column; leading astronomy tours all over the globe; capturing spectacular photographic images of the sky; and generally getting people to appreciate all that’s overhead.
 
The recent gathering was typical.  After dinner at the Borrego Springs Resort, Mammana gave a presentation that covered both the meaning of the summer solstice and the things that should be visible in that moonless night’s sky. Then we trooped out beyond the tennis courts. Conditions were perfect. The wind had died and the temperature had dropped to about 70 degrees. Several amateur astronomers from throughout the region had set up their telescopes and stood ready to explain the wonders to be seen through their eyepieces: moons of Saturn, colliding galaxies, immense celestial dust clowds, and more. For me, one of the marvels was Mammana’s enthusiasm. It doesn’t seem to wane even when he’s pointing out things he’s pointed out probably tens of thousands of times before: the North Star, constellations. I took an adult ed class in astronomy from him at San Diego State maybe 20 years ago, and he’s seems as patient and ebullient and enthralled by it all now as then.
 
He sounds particularly excited by the apparently imminent designation of Borrego Springs as an International Dark Sky Community. As such, it will be only the second city in the United States to be so recognized (by the International Dark Sky Association) and the first in California. One of the easiest ways to get updates on that and other local astronomical happenings is to sign up for Mammana’s free e-mail newsletter: http://www.dennismammana.com/skyinfo/newsletter.htm.

Marshall South Online

Saturday, June 13th, 2009

Few of us have had as flamboyantly romantic a vision as Marshal South. Around 1930, with the US sinking ever deeper inmarshallto Depression, South and his young wife Tanya packed their few possessions into their Model T Ford, drove to the desert east of San Diego, found a mountaintop that appealed to them, and decided to live on it, as simply and naturally as the native Americans who once preceded them. They called the place Ghost Mountain and within five years they’d constructed a compact adobe home that they christened Yaquitepec (after the Yaqui Indians of Sonora, Mexico.)

In the years that followed, the couple had three children who grew up naked, home-schooled by their parents and playing with lizards and packrats instead of conventional toys. Amidst the backbreaking work of trying to maintain a household in the absence of any modern conveniences (or even water), Tanya wrote poetry, and in 1939 Marshall chronicled the family’s grand experiment in the Saturday Evening Post. He later launched a series of articles in Desert Magazine that throbbed with enthusiasm for the primitive lifestyle, and he delighted the magazine’s readers with tales of the family’s ingenious adaptations to their harsh environment. But the adventures came to an end in 1946 when Tanya filed for divorce and moved the children back to the city. Two years later Marshall died of heart disease at the age of 59.

Today Ghost Mountain is a part of Anza-Borrego Desert State Park, and although most of Yaquitepec has melted back into the earth, traces of the family’s peculiar domicile remain in the site. It’s a popular hiking destination, and for anyone interested in learning about the man who put it on the map, a rich new resource has just become available in the form of a website, www.marshalsouth.com.

The site was created by Diana Lindsay. A co-founder of the El Cajon-based Sunbelt Publications, Lindsay has long been transfixed by the saga of the South family. She mentioned it in her 1973 history of the desert state park (published by Copley Books). Eighteen years later, I myself wrote a much more extensive account of the story for the Reader, “The Hermits of Ghost Mountain.”  But Lindsay felt there was still more to be unearthed, and in 2001 shdianabooke plunged into several years of serious sleuthing that culminated in her 2005 book, Marshal South and the Ghost Mountain Chronicles: An Experiment in Primitive Living.

Hardcore Southophiles can pay a $9.95 annual membership, available through the site, that gives them unlimited access to published and unpublished articles, novels, poems, artwork, and photographs by and pertaining to the sage of the desert. But the site also offers a lot of excellent free material, including two rare film clips of the South family, directions to and maps of the area, and extensive information about the family’s experience.

I have to chuckle at the thought of Marshal, who heaped so much scorn on the trappings of modernity, having his own little homestead in cyberpace. At the same time, I’m pretty sure he would have loved it.