THE FOLLOWING NARRATED VIDEO SLIDE SHOWS ARE AVAILABLE TO BE VIEWED ON THE INTERNET:

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GEOLOGY FIELD TRIPS



THE COLORADO PLATEAU FIELD TRIP  


THE EASTERN SIERRA NEVADA FIELD TRIP


THE DEATH VALLEY FIELD TRIP


THE MOJAVE DESERT FIELD TRIP
(Desert ecology including geology commentary)


TRAVEL AND ADVENTURE






THE LAKE NATRON, TANZANIA
HORSEBACK EXPEDITION


THE SANTA CRUZ CREEK  EXPEDITION


A HUNTING WEEKEND AT RIDGECREST


A RAFT TRIP THROUGH THE GRAND CANYON
(Vacation pictures including geology commentary)



 






















A description of the Eastern Sierra Nevada Geology Field Trip:


This is a slide show of a geology Field Trip hosted by Allan Hancock College.  We traveled from the central coast of California, across the southern end of the Sierras, the northwestern tip of the Mojave Desert and on up the Owens Valley parallel to and on the Eastern side of the Sierra Nevada Mountains up to Mono Lake with the Panamint and Death Valley basins to the east.
While on this trip we observed many examples of geologic processes including, but not restricted to the following:
1) The San Andres Fault and fault zone landforms.
2) The Miocene Ricardo Formation at Red Rock State Park.
3)  Cinder cones, rhyloitic flows, obsidian domes and ashfalls (e.g. the Bishop Tuff) from the Long Valley Caldera eruptions and subsequent volcanic activity in the region including very recent eruptions and eruptions projected to occur within decades of the present. 
4) The southern end of the Sierra Nevada batholith and the forearc basin now forming the San Joaquin Valley.
5)  Chemical and physical weathering of granite as seen at the Alabama Hills. 
6) Mono Lake and Owens Lake to see the the effects of diversion of water to Los Angeles by Mulholland's engineering projects and to view the Tufa Domes of Mono lake.
7) Pleistocene pluvial and alpine glaciation landforms.
8) Roof pendants of metamorphosed Paleozoic passive margin sediments and visited a carbonate region that had been mineralized.

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A description of the Colorado Plateau Geology Field Trip:
    

Our Colorado Plateau Geology Field Trip included viewing and studying the history of the passive, active and transform plate boundaries during the Paleozoic, Mesozoic and Cenozoic in addition to all the "layer cake" formations found there.  

We traveled to and otherwise observed the Meteor Crater, Lowell Observatory, Sunset Craters, the Grand Canyon, Glen Canyon, Antelope Canyon, the Navajo National Monument, Monument Valley, Mexican Hat and the Goosenecks of the San Juan, Muley Point, Natural Bridges, Abajdo Mountain Laccolith, Arches National Park within the Paradox Basin Anticline, Fisher Towers near Moab, Dead Horse Point, Capitol Reef National Park, Bryce Canyon, and Zion Park.  At each place we examined the lithology and the depositional history that created it.

While traveling through the area we encountered and studied such formations as: the Mancos Shale, Dakota, Mesa Verdi, Entrada, Carmel, Navajo Sandstone, Cedar Mesa, Cutler Group, Hermosa Group, Supi, Chinle, Moenkopi, and the formations in the Grand Canyon from the pre Cambrian Unkar to the Tapets to Bright Angle to the Redwall to the Permian Kibab, to name just a fraction of the formations we saw.  In addition we observed dinosaur bones and collected fragments in the Morrison Formation.

      
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A description of the Lake Natron Horseback Expedition:
      


This horseback expedition was over a region that is part of a great geologic feature called the African Rift Valley, an area of tall composite volcanoes (one of which is perhaps the most unusual volcano in the world), cinder cones, explosion pits with tephra rings, hot springs charged with alkali, ash falls, thick basaltic lava flows, huge calderas, hyper saline lakes and outcroppings of very old Precambrian bed rock.  The most extreme and beautiful example of a rift valley lake and the one that we came to see, is Lake Natron.

The ride began on the slopes of a 15,000 foot volcano, Mt. Meru at a place called the Uto Farm.  From there we traveled by horseback down into the Rift until we reached the very remote and very unusual Lake Natron.  This isn't a story about how much fun I had in Africa.  As a matter of fact, I did not have much fun at all on this safari.  A lot of things went wrong  and many other things were done wrongly or poorly.  Please be forewarned, the following story isn't a lighthearted tale set in the African bush.  This is the story of an adventure, and adventures are seldom, if ever, fun.  On the other hand, if given the choice between a "fun time" and an adventure, give me an adventure any day.

      
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A description of the Death Valley Geology Field Trip:
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This is a narrated slide show of a five day field trip where we traveled from the California Central Coast (Santa Maria) inland to Death Valley and back again.  This slideshow is long and unedited.  It was made for the members of the class and no attempt was made to shorten or make it more compatible with a casual viewer’s tastes.  I have attempted to be scientifically accurate, but it is obviously not a scientific study.

The presentation includes descriptions of the biology and geology of the various geographic provinces we passed through on our way to, through and back home from Death Valley.  The Geomorphic provinces we passed through include:
1) The California Coast Range Province.
2) The Central Valley Province.
3) The Sierra Nevada Province.
4) The Mojave Desert Province.
5) the Basin and Range Provence.

The topics we discussed and the scenery we observed included:
1) the geographic and biologic features of the San Andres Fault zone. 
2) evidence for the conversion plate boundary (subduction zone) that was active in this region from the Triassic through the Oligocene. 
3) various desert ecosystems and evidence of present and Pluvial era drainage systems. 
4) the local stratigraphy and tectonic forces that operated to create the topography and the outcropping of rocks ranging from the  Precambrian (Mazatzal Orogeny and Amargosa Aulacogen) to the Nevadan Orogeny to the Recent and present day salt pans and alluvial fans. 
5) lateral, thrust and normal fault zones,
6) evidence of upraised basins at Red Rock and the Funeral Mountains,
7) rhyolitic and basaltic  flows, cinder cones, the Ubehebe explosion pit,
8) moving rocks on Race Track Playa,
9) the huge salt pan at Bad Water,
10) many interesting sites ranging from Scotty's Castle, to the many beautiful vistas such as Zabriskie Point and Dante‘s View to the Pup Fish at Salt Creek and Ash Meadows.

      
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A description of the Santa Cruz Creek Expedition:
      


Five friends and I traveled over some of the most rugged terrain in North America.  On the way I nearly lost my riding horse, Rusty when he fell off the trail and down a steep slope.  Somehow he made it back up and we made it to Santa Cruz Creek after a harrowing ride where we had a wonderful experience camping there. The next day we foolishly drawled and then let the foolishness that comes with haste lead us to make a bad decision that nearly ended in death for my pack horse, Samson. 

For all the danger, the only injury was some severe swelling in a leg suffered by my horse Samson when he had a serious and potentially fatal fall off one of the worst and steepest parts of the trail.  Through some quick thinking, hard work and a hell of a lot of luck we got him back home alive and after some treatment, his leg was just fine.

This is the story of how some bad information and foolish over optimism nearly ended in disaster. We also learned once again that the only difference between a horrible disaster and great adventure is simply this: if nobody gets killed, it's an adventure.

      
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A description of the Ridgecrest Hunting Weekend:
      


This slide show consists of a lot of still photographs of hunting with foxhounds, harriers and beagles in the desert south and west of the town of Ridgecrest, California, January 18, 19 and 20, 2008. Due to the harsh drought of the last couple of years, the hunting was very bad and we didn't see a single coyote and just a couple of rabbits, but the company was great and we all had a wonderful time.  As always, the beagle pack was fun to watch.  It is presented in two versions.

      
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A description of the Mojave Desert Field Trip:
      

This is a slide show of our Desert Ecology Field Trip to the Mojave Desert.  Our center of studies was the Zzyzx Desert Research Center near Baker Calif.  We set traps on an alluvial fans to observe desert mammals and invertebrates such as Kangaroo Rats and Hairy Scorpions.  We also observed desert plant life such as the Smoke Tree, the Mesquite Tree, the Palo Verdi, the Joshua Tree, Yucca Plants, the Creosote Bush, Barrel Cactus and many other smaller species of plants.

      
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A description of my vacation trip to Egypt:
      

This narrated slide show is an account of my Sept. 2004 vacation trip to Egypt. 
Please note, this is an amateur and non-scholarly presentation of my personal impressions of Egypt both ancient and modern.
During this presentation I will talk about and present pictures of the many places I visited including: the Giza Pyramids & Sphinx, Islamic, Coptic and modern Cairo, a rug factory near Memphis, scenes along the Nile from my cruise boat, the Temple of Osiris at Abydos, the temple of Hathor at Dendara, the Temple of Horus at Edfu, the extensive Temple of Ammun complexes of Karnak and Luxor at the site of ancient Thebes, the Valley of the Kings and Queens, the Colossi of Memnon, the Aswan dams, the Isis Temple of Philae, the Temples of Ra and Hathor at Abu Simbel, and the sights in and around Alexandria, its waterfront and new library.

      
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A description of my Grand Canyon vacation.
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This is a narrated slide show of my May-June 2008 raft trip down the Colorado River and through the Grand Canyon. I went on this trip not to get wet or have a white water thrill, but to see geology as it can be seen nowhere on earth.

In fact, it was to experience the geology of the Grand Canyon that I especially wanted to go on this trip and certainly not to get splashed or play in the water (I do not liking swimming).  I was by no way disappointed by what I saw and got to see beautiful exposures of Triassic formations such as the Wingate of the Vermillion Cliffs, the underlying Chinle formation with its underlying Shinarump conglomerate and below that the very red Moenkopi shale, all there at my campground at Lee's Ferry.  While at Lee's Ferry, I used my leisure time the day before the raft trip to get a good look at the Kaibab limestone that give Marble Canyon its name.

While rafting through Marble Canyon and then through the Grand Canyon, we passed into the heart of the Kaibab Uplift and thus we took a journey into deep time as we went into older and older layers, stacked like a birthday cake and basically undisturbed for hundreds and hundreds of millions of years.  There at Lee's Ferry, where we boarded our rafts and where I had camped for two nights, we left the Mesozoic (the lower Triassic Moenkopi) and entered rocks of the Paleozoic and Protozoic.  Our first Paleozoic rocks were the Kaibab, the Toroweap, the Coconino Sandstone and the Hermit Shales all of Permian age.  Proceeding into the Grand Canyon we encountered the Supai Group with its prominent Esplanade Sandstone member all of Pennsylvanian age.  Then we encountered the great and thick Redwall Limestone of Mississippian age.  During this slide show I ramble on about the Collapse Pipe Breccia uranium ore bodies that were formed by ancient caverns in this limestone collapsing perhaps 200 million years ago after the thick layers of the later Paleozoic and Mesozoic rocks had been deposited.  Below the Redwall we saw that there was a great unconformity where the entire Ordovician and Silurian and almost all of the Devonian was missing.  We got to see numerous exposures of the thin fresh water Temple Butte limestone, that formed in karst valleys of the old Redwall limestone nearly 350 million years ago.  As we got deeper into the Kaibab Uplift we saw exposures of Cambrian age dolomite, the Muav Limestone below it, the Bright Angle shales and finally we reached the lowest Paleozoic layer of the Grand Canyon, the Tapeats sandstone which forms the Tonto Platform that visitors see when looking down from the rim of the Canyon. 

As we got deep into the Grand Canyon we passed the famous Great Unconformity between the horizontal Cambrian and the tilted Protozoic sediments that Major Powell saw and named.  Here was an unconformity that was both angular and temporal.  We got to see the Protozoic sedimentary and igneous rocks of the Chular Group, the Cardenas Lavas, the Dox sandstone, the Shinumo quartzite, the Hakatai shale and the oldest Protozoic sedimentary layer, the Bass limestone all lying unconformably below the basically horizontally layered Paleozoic rocks.  We could see that these sedimentary layers had been block faulted and tilted in what I have been told was the Grand Canyon Orogeny. 

As we proceeded we got into the famous "Granite Gorge" where we encountered the Vishnu and allied schists that were formed in the ancient Mazatzal Orogeny about 1,700 million years ago when a large island-arc was accreted to the southern edge of the ancient North American plate.  When the SiAl material of the two plates were forced together, the collision raised a tall and deep mountain range to create the conditions necessary to form this kind of schist.  Obviously, sometime later a granite pluton was intruded into this schist as the orogeny continued and we could see it as exposures of a pink (orthoclase feldspar) granite famously known as the Zoroaster Granite.

While we traveled though the Canyon we visited such places as Elves Chasm (AKA, Rivendell), Havasu Creek, Black Tail Canyon, Phantom Ranch among many other places.  We saw where the beautiful Little Colorado meets the Colorado and how Raleigh Scattering produces the most beautiful effect.  We visited some rather outstanding Anasazi dwellings at a couple of stops too.  We also got to see evidence of pot hole formation and other forms of river erosion and toward the end of the trip we got to see the extensive basaltic flows that ran down from the top of the Canyon there at Vulcan's Thrown (and other vents) that dammed the flow of the Colorado River several times during the late Tertiary.

Of course, most of the pictures are of the people on the trip (most of whom could not have cared less about geology) having a lot of fun.


Hope you like this slide show.

      
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