Unified Interior Regions

California

The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

Filter Total Items: 1,107
June 28, 2007

PubTalk 6/2007 — Adventures in Southwest Geology

Exploring the colorful southern Colorado Plateau in 3-D

By Philip Stoffer, Geologist

Take a colorful tour with the help of 3-D photography through some of the region's highlights:

  • A plethora of parklands- Petrified Forest, Chaco Canyon, Wupatki, Grand Canyon
  • High desert climate changes, past, present, and
May 31, 2007

PubTalk 5/2007 — Alchemy in the Abyss

Probing the mysteries of deep-ocean minerals

By James R. Hein, Marine Geologist

  • Since President Reagan in 1983 extended U.S. mineral rights 200 nautical miles offshore, interest in deep-sea mining has increased
  • Massive sulfide deposits form rapidly at very hot ephemeral vents..black smokers. and .white smokers.
  • Slow-
April 26, 2007

PubTalk 4/2007 — Shock Waves

How the 1906 earthquake shook up California and science

A presentation of the award-winning USGS Video Shock Waves introduced by David Schwartz, Earthquake Geologist 

  • The 46-minute film Shock Waves includes dramatic historical footage, colorful animations, and interviews with earthquake experts
  • Shock Waves received
March 22, 2007

PubTalk 3/2007 — Impact!

Piecing together the story of a giant meteorite crater beneath the Atlantic coast

By David S. Powars, Geologist, and R.D. Catchings, Geophysicist

  • Buried under Chesapeake Bay is a very well preserved impact structure 56 miles across and more than 2 miles deep
  • Following clues from drill holes and seismic imagery, careful
Drill Rig Tender staged for departure from Lone Pine, California
March 20, 2007

Drill Rig Tender staged for departure from Lone Pine, California.

Drill Rig Tender staged for an early morning departure from Lone Pine after drilling a multiple-completion groundwater-monitoring well in Centennial Flats for the Bureau of Indian Affairs.

February 22, 2007

PubTalk 2/2007 — Riding the Storm

Landslide Danger in the Bay Area Hills

Peter Lyttle, National Landslide Hazards Program Coordinator,
will introduce the USGS premiere of the documentary
Riding the Storm by Karen Adams. A question-and answer session
with the producer, USGS researchers, and residents
featured in Riding the Storm will follow.

January 25, 2007

PubTalk 1/2007 — The Hidden World of the Golden Gate

How tides, currents, and humans have created an array of sea-floor features

By Patrick Barnard, Marine Geologist, and Peter Dartnell, Physical Scientist

  • A century of technical advances allow scientists to identify and visualize spectacular sea-bottom features
  • Recent collaborative research outside the Golden Gate found that 100
The California Aqueduct
December 31, 2006

Aqueducts move water in the past and still today, as in California

Aqueducts move water - today and in ancient times

Be it 2,000 years ago in ancient Rome, Italy or today in California, aqueducts were and are essential to get water from a place where it exists in ample supply to where it is scarce. Aqueducts aren't a high-tech modern invention—the ancient Romans had aqueducts to bring water from the mountains above

...
An oblique illustration of the floor of a bay as if all the water has been drained out.
December 31, 2006

Multibeam bathymetry of San Francisco Bay

A multibeam bathymetric survey that produced unprecedented high resolution images of the mouth of San Francisco Bay was conducted in 2004 and 2005. The survey, performed over forty-four days by the Seafloor Mapping Lab at California State University, Monterey Bay, consisted of 1,138 track lines, 1.1 billion soundings, and covered an area of 154 km2 (60 mi2

...
Photo of SBCC wells looking east
December 14, 2006

San Bernardino, Cone Camp Multiple-depth Monitoring Well Sites

Looking east towards USGS Site ID: 340541117074401-6, Site Name: 001S002W07Q001S-6S, Local name: SBCC 1-6 in San Bernardino County, California.

December 14, 2006

PubTalk 12/2006 - Mojave

Title: The Mojave National Preserve: Geology and Water Shape Desert Plant Communities 

  • One of the largest units in the National Park System, the Mojave National Preserve was established in 1994
  • The Preserve encompasses great sand dunes (including "singing sands"), young volcanic features, forests of Joshua trees, and fields of
December 14, 2006

PubTalk 12/2006 — The Mojave National Preserve

Geology and Water Shape Desert Plant Communities

by David Miller, Geologist and John Nimmo, Soil Hydrologist

 

  • One of the largest units in the National Park System, the Mojave National Preserve was established in 1994
  • The Preserve encompasses great sand dunes (including "singing sands"), young volcanic features,
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USGS science for a changing world logo
February 5, 2001

Aerial photographs supplied to the Santa Clara County Sheriff’s Search and Rescue Team, by the U.S. Geological Survey, are being used to search for the remains of Xiana Fairchild. A child’s skull, which was found near Lexington Reservoir on January 19, has been identified through dental records and DNA tests, as that of the missing 7-year-old Vallejo girl who disappeared in December 1999.

USGS
February 5, 2001

Aerial photographs supplied to the Santa Clara County Sheriff’s Search and Rescue Team, by the U.S. Geological Survey, are being used to search for the remains of Xiana Fairchild. 

USGS science for a changing world logo
January 22, 2001

A new geologic map of surficial deposits in the nine-county San Francisco Bay region that can be used to evaluate earthquake hazards has been released in digital form by the U.S. Geological Survey in Menlo Park.

USGS
January 22, 2001

A new geologic map of surficial deposits in the nine-county San Francisco Bay region that can be used to evaluate earthquake hazards has been released in digital form by the U.S. Geological Survey in Menlo Park.

USGS science for a changing world logo
January 16, 2001

In conjunction with the seventh anniversary of the 1994, 6.7 Northridge earthquake, the U.S. Geological Survey, in cooperation with the Southern California Earthquake Center (SCEC) and the National Science Foundation (NSF), has produced a two-page fact sheet that explains how geologic conditions in the Los Angeles basin affect the amount of shaking experienced by various areas of the basin.

USGS
January 16, 2001

In conjunction with the seventh anniversary of the 1994, 6.7 Northridge earthquake, the U.S. Geological Survey, in cooperation with the Southern California Earthquake Center (SCEC) and the National Science Foundation (NSF), has produced a two-page fact sheet that explains how geologic conditions in the Los Angeles basin affect the amount of shaking experienced by various areas of the basin.

USGS science for a changing world logo
December 21, 2000

DNA sequence data revealed a deep genetic split between common ravens from the southwest United States compared to the rest of the world, according to a journal article in the December 22 issue of the Proceedings of the Royal Society of London, Biological Sciences.

USGS
December 21, 2000

The common raven in California is not so common after all, according to a team of scientists at the U.S. Geological Survey and other research institutions involved in new genetics research.

USGS science for a changing world logo
December 19, 2000

The effects of selenium entering the San Francisco Bay-Delta Estuary (Bay-Delta) are forecast in a model released today by the U.S. Geological Survey (USGS). 

USGS
December 19, 2000

The effects of selenium entering the San Francisco Bay-Delta Estuary (Bay-Delta) are forecast in a model released today by the U.S. Geological Survey (USGS).

USGS science for a changing world logo
December 7, 2000

Scientists have confirmed that agricultural contaminants may be an important factor in amphibian declines in California.

USGS
December 7, 2000

Scientists have confirmed that agricultural contaminants may be an important factor in amphibian declines in California.