Gradient
Gradient, 1994, is a video that documents and considers the
collection of sea floor sediment for Deep Gradient/Suspect Terrain.., Yerba
Buena Gardens, San Francisco, Ca, 1993 using the fishing boat Pearl hired
for the collection. Scrolling over the collection footage is a listing
of 121 minerals, elements
and
rock-types
inherent
in the sediment collected for Deep Gradient.. from the
continental shelf, 4 miles off the coast of central California. This
assemblage
of materials is potentially derived
from
the entire watershed that includes the Sacramento, Feather, Napa,
Cosumnes, Mokelumne, American, San Joaquin and Merced Rivers. This
system empties out through the Golden Gate, and gathers sediment
from a landscape that ranges most of the length of the Great Valley,
the central and eastern slopes of the Sierra Nevada and much of the
Coast Ranges and coastal rocks of Central California.
Videography: John
Roloff/Ann Wettrich; Titles/text/editing: John Roloff; Sediment collection:
Tim Collins
