Trail Through Time

A 6.3-mile trek through 190 million years of geologic history on California's Mount Diablo. Sponsored by Mount Diablo Interpretive Association.

Featuring Ken Lavin. Videography by Macha Rose. Animations by Tanya Atwater, UC Santa Barbara. Music by Phil Heywood. Produced by Joan Hamilton, Audio Guides to the Outdoors. 
Art: Saber-toothed cat illustration for California State Parks by Carl Buell. Music: "Back in Big Horizons," Phil Heywood.

Art: Tectonic Plates, USGS. Geologic animations by Tanya Atwater, UC Santa Barbara. Music: "Back in Big Horizons" Phil Heywood.

Geologic animations: Tanya Atwater, UC Santa Barbara. Music: "Country Blues Picnic," Phil Heywood.
Art: Coast Range Ophiolite diagram, USGS http://geologycafe.com/california/pp1515/chapter3/fig3-4.jpg. Other charts:  Mount Diablo Interpretive Association. Music: "Hoofin' It," Phil Heywood.

Animation: Tanya Atwater UC Santa Barbara. Photo: pillow basalt underwater, OAR/National Undersea Research Program (NURP). Music: "Country Blues Picnic," Phil Heywood.
Music: "Hoofin' It," Phil Heywood.
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Music: "Hoofin' It," Phil Heywood. Illustrations: turbidity currents, NOAA; graywacke under microscope, Michael C. Rygel, Wikimedia. 
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Music: "Local Joe," Phil Heywood.
Music: "Local Joe," Phil Heywood. Subduction illustration: by KD4444, Wikipedia Commons.
Music: "Year of the Rooster," Phil Heywood. Illustrations: geological time scale, cross section of fault; Mount Diablo Interpretive Association. Photos of Lawler tuff by Ken Lavin.
Music: "Back in Big Horizons," Phil Heywood. Illustration: age of dinosaurs, mammals, Patrick Hamilton; Great Valley Sequence, Mount Diablo Interpretive Association.
Music: "Year of the Rooster," Phil Heywood. Photo: Utah sedimentary rock, Wilson44691/Wikipedia
Geologic Time Scale: Mount Diablo Interpretive Association.

Music: "Back in Big Horizons," Phil Heywood. Photo of Knobcone Point birdwatchers by Scott Hein. Illustrations: Sierra Nevada uplift, USGS; serpentinite, Mount Diablo Interpretive Association.
Music: "Country Blues Picnic," by Phil Heywood.
Music: "Hoofin' It," Phil Heywood.

Music: "Local Joe," Phil Heywood. Photos: Liesegang structures by Ken Lavin, Tafoni by LizGeo310 at English Wikipedia.
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Music: "Country Blues Picnic" by Phil Heywood. Photos: Blackhawk Ranch quarry, 1950, © UC Berkeley Museum of Paleontology; Blackhawk Ranch quarry, 1981, © UCBMP by Mark Goodwin.
Music: "Hoofin' It," Phil Heywood. Geologic Time Scale: Mount Diablo Interpretive Association.
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Music: "Year of the Rooster," Phil Heywood.
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Music: "Slippery Slope," Phil Heywood. Geologic Time Scale: Mount Diablo Interpretive Association. Photos: Gomphotherium jaw, ©2002 University of California Museum of Paleontology, photo by Audrey Aronowsky; WPA workers during early excavations at Blackhawk Ranch Quarry, 1938 ©2016 University of California Museum of Paleontology, photo by K.A. Richey; Gomphotherium skeleton courtesy of the Museums at Blackhawk, photo by Francis Sakamoto.
Music: "Back in Big Horizons," Phil Heywood.
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Music: "Year of the Rooster," Phil Heywood.
Featuring Roi Peers. Music: "Country Blues Picnic," Phil Heywood.
A trailer for the hour-long Trail Through Time tour.  Featuring Ken Lavin.  Music by Phil Heywood. Animations by Tanya Atwater, UC Santa Barbara. 
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