California Geology magazine is no longer being published but now you can access all the magazines online.  Click here to search for California Geology Magazines.  The index below dates back to 1991 and shows issues of California Geology that are currently available. This list does not include the Mineral Information Service magazine (1948-1970). Out of print issues are not included on this list. As a rule, the last issue of every volume (year) contains an index to that volume, listed by topic, location and author. Back issues of California Geology magazine may be purchased for $2.00 each. To order, please go to Ordering CGS Publications.

2001-Volume 54

JANUARY/FEBRUARY 2001: Using New Technology to Solve an Old Mystery (Racetrack Playa, Death Valley); Surveying the Latest Pictures From Mars; Digital Database of Faults from the Fault Activity Map of California and Adjacent Areas; Teacher Feature- Southern California Museums. Download PDF of this issue. (6.3 MB PDF Document)
MARCH/APRIL 2001: Death Valley's Visible History; Southern California 2000 Seismicity M4.5 and Larger Earth- quakes and Historical Context; Map Sheet 49; Map Sheet 50; DMG OFR 99-09; Seismic Hazard Zone Maps; GEOLOGY NEWS REPORT; Teacher Feature-Northern California Museums.
MAY/JUNE 2001: Is My House In a Seismic Hazards Zone; Marine Inundation of a Late Miocene Forest: Stratigraphy and Tectonic Evolution of the Saint George Formation, Crescent City, California; Book Reviews; NEW ITEM, Postcard from California--Simplified Geologic Map of California; Teacher Feature-Nicaragua's Cerro Negro Stratovolcano.
JULY/AUGUST 2001: Late Quaternary Faulting in San Diego Bay and Hazard to the Coronado Bridge, Surprising Museum in the Desert and History of Shoshone, California, Teacher Feature -- Fossil Finds in the Los Angeles Subway. Download PDF of this issue.
SEPTEMBER/OCTOBER 2001: Russian Dinosaurs in Sacramento; Fluid-Inclusion Studies of Hydrothermal Minerals from Geothermal Drill Holes at Medicine Lake Volcano, Northern California; California’s Non-Fuel Mineral Production 2000; Teacher Feature--Earth Science Week; Geology Tours Offered by the Desert Institute—Joshua Tree National Park. Download PDF of this issue.
NOVEMBER/DECEMBER 2001: Overview of Division of Mines and Geology Activities 2000-2001; The Challenge of Earthquake Loss; Seismic Hazards Mapping Program; The Mineral Resources Program in 2000/2001; Strong-Motion Instrumentation Network Status; Regional Geologic and Hazards Mapping; THP Enforcement and Watershed Restoration Program; North Coast Watersheds Assessment Program; Library Challenges: Information Access, Storage, and Customer Service Issues in the Digital Age; Index to Volume 54—2001; Dear California Geology Subscribers (Letter from James F. Davis Regarding California Geology Magazine); California Geology Subscriber Survey.

2000-Volume 53

JANUARY/FEBRUARY 2000: Scientific Drilling in Long Valley Caldera, Califomia-An Update; The October 16, 1999 M ' 7.1 Hector Mine Earthquake-An Initial Response; Sneak Preview of DMG's Mineral and Mines CD-ROM; DMG Library Celebrates Earth Science Week; Teacher Feature-The Mystery of Petroglyphs.
MARCH/APRIL 2000: The Demise of the San Bruno Fault; Southern California Seismicity Summary-1999; Northern California 1999 Seismicity; Teacher Feature-Earthquake! Earthquake!! Earthquake!!!
MAY/JUNE 2000: A Discussion of Geology, Soils, Wines and History of the Napa Valley Region; Making Portland Cement in California; In Memory of Gordon W. Chase; Teacher Feature-Geoscience Challenge.
JULY/AUGUST 2000: Are Soils Endangered; California Landscapes.-A Geologic Perspective; In Memory of Oliver E. Bowen; Teacher Feature-Looking for Faults in All the Right Places.
SEPTEMBER/OCTOBER 2000: Volcanoes in the Susanville Region, Lassen, Modoc, Plumas Counties, Northeastern California; 1999 California Mining Review; Teacher Feature-Earth Science Week; Geologic Map of California Release.
NOVEMBER/DECEMBER 2000: The August 17, 1999 Kocaeli, Turkey Earthquake - A Lesson for California; Garnet; Is Mushroom Rock a Ventifact; Teacher Feature-Inside the Earth; Index to Volume 53 – 2000.

1999-Volume 52

JANUARY/FEBRUARY 1999: The Geology, Mineralogy, and History of the Himalaya Mine; A Popular and Informative Event; Teacher Feature - Exploring Caves; In Memory - John Lawrence Burnett and Richard Malcolm Stewart.
MARCH/APRIL 1999: The 1998 Storm-Related Events, A Response; Activities of the California Post-Earthquake Information Clearinghouse; Southern California Seismicity Summary for 1998; Northern California 1998 Seismicity - M4.5 and Larger Events and Historical Context; Teacher Feature - The Hunt for Hazards in the Classroom.
MAY/JUNE 1999: The Mystery of the Eureka Breccia: Discovering the World of Microcrystals; Teacher Feature- California's Official State Gem, Rock, Fossil, and Mineral.
JULY/AUGUST 1999: California's First Fossil Evidence of Cretaceous Winged Vertebrates; William More Gabb- First Paleontologist of the Geological Survey of California; Plio-Pleistocene Fossil Trees Found in Ancestral Lake Britton Diatomite Deposits; Teacher Feature-Dinosaurs: Facts and Fiction.
SEPTEMBER/OCTOBER 1999: Magmatic Gas Emissions from Mammoth Mountain, Mono County, California; California Non-Fuel Minerals--1998: Teacher Feature-Earth Science Week.
NOVEMBER/DECEMBER 1999: Maps: The Earth on Canvas; Clifford Gray Memorial; Index to Volume 52 – 1999; Teacher Feature-Fabulous Facts About Mineral Resources.

1998-Volume 51

JANUARY/FEBRUARY 1998: The Discovery of Gold in California; Gold Gold Gold!; Gold in the California Desert-Past, Present, and Future; Teacher Feature – Gold Dust Memories; The Varied Uses of Gold.
MARCH/APRIL 1998: New Geologic Maps Lend Support to Better Building Design in California Earthquake Country; Reducing Future Earthquake Losses in California; Teacher Feature-April is California Earthquake Preparedness Month; A Slice of Earth – Anatomy of an Earthquake.
MAY/JUNE 1998: Geology and Slope Stability Along Highway 50; Real-Time Monitoring of Active Landslides Along Highway 50, El Dorado County; 1997 California Mining Review; Teacher Feature – Geologic Time.
JULY/AUGUST 1998: Short History of Man and Gold; Scenes from the California Gold Rush; Division of Mines and Geology Library – Open House; Division of Mines and Geology Library Past, Present, and Future; California Gold Mines Photograph Collection; Teacher Feature – Landforms.
SEPTEMBER/OCTOBER 1998: Geology of Joshua Tree National Park; Mines in Joshua Tree National Park; Teacher Feature – Geoscience Careers.
NOVEMBER/DECEMBER 1998: Quaternary Geology and Neotectonics of the Pinto Mountain Fault, Mojave Desert, Southern California; Major Improvements in Progress for Southern California Earthquake Monitoring; Teacher Feature – Journey Back In Time; Index to Volume 51 – 1998.

1997-Volume 50

JANUARY/FEBRUARY 1997: Changes in Construction Aggregate Availability in Major Urban Areas of California between the Early 1980s and the Early 1990s; A Field Trip Transect of the Northern Sierra via Interstate Highway 80; Gold Rush California State Parks.
MARCH/APRIL 1997: California's Mother Lode Highway – Mariposa to Chinese Camp; Diary of a Frenchman, Trinity River Placers, 1850; Fossil Marine Algae or Trace Fossil?; Mining Brings Opportunities and Challenges.
MAY/JUNE 1997: Sky Tour of the New Year's Flood, Central Valley, California, 1997; Reconnaissance Engineering Geology of the Mill Creek Landslide of January 24, 1997; California's Mother Lode Highway – Chinese Camp to Mokelumne Hill; Reclaiming Mined Land Provides for the Future.
JULY/AUGUST 1997: Assessing Earthquake Ground Shaking Hazard in California; California’s Non-Fuel Mineral Production – 1996; California's Mother Lode Highway – Mokelumne Hill to Placerville; Mountain Building.
SEPTEMBER/OCTOBER 1997: Chico Formation Yields Clues to Late Cretaceous Paleoenvironment in California; California’s Mother Lode Highway – Placerville to North San Juan; Teacher Feature – Volcanoes.
NOVEMBER/DECEMBER 1997: Radon Mapping-Santa Barbara and Ventura Counties; California’s Mother Lode Highway – North San Juan to Sattley; Teacher Feature – Geology of Donner Lak; Index to Volume 50 – 1997.

1996-Volume 49

JANUARY/FEBRUARY 1996: Eastern Mojave Desert Pediments; A Chronicle of Pre-1848 California Gold Discoveries; The Hydrologic Cycle; William "Bill" Clark [tribute]; Thomas Edwards Gay, Jr. [tribute].
MARCH/APRIL 1996: Liquefaction in the California Desert – an Unexpected Geologic Hazard; Reclaiming Surface Mined Land to Waterfowl Habitat; Earthquake Legends; Richard B. Saul – 1922-1995.
MAY/JUNE 1996: Quaternary Diapir of Claystone in Faulted Anticline, Stanford, California; Focal Mechanism Studies – Revisited, An Explanation; Earth Science Teacher Resources.
JULY/AUGUST 1996: Native Seed Collection for Mined-Land Revegetation; Fossils...The Living Past; Be a Rock Hound.
SEPTEMBER/OCTOBER 1996: 1995 Storm Events; Breached Landslide Dam on the Navarro River; Debris Flows Resulting from January 1995 Rainstorms; Geothermal Gems.
NOVEMBER/DECEMBER 1996: 1995 California Mineral Industry Survey; California Principal Mineral-Producing Localities [map]; Preliminary Maps of Seismic Hazard Zones and Draft Guidelines for Evaluating and Mitigating Seismic Hazards; 1995 Redway Landslide; Glaciers; Index to Volume 49 – 1996

1995-Volume 48

JANUARY/FEBRUARY 1995: Little Anacapa Island; The Miners Law – Part II; Gold Rush and Early California, Astronomy, and Landforms, etc. Word Searches and Geology Crossword Puzzle.
MARCH/APRIL 1995: New Fault Map of California and Adjacent Areas; The September 1, 1994 Mendocino Fault Earthquake; Tsunami Warning!; Tributes [to George Hilton and Martin Stout].
MAY/JUNE 1995: Mercer Caverns: History, Exploration, and Geology of a Gold Country Classic, Calaveras County; Controlling Factors in the Development of Corrugations on Off-Road Motorcycle Trails, San Benito County; The Eureka Earthquake, December 26, 1994; Fireworks and Natural Resources; Geologist Ed Kiessling Retires.
JULY/AUGUST 1995: Seismotectonics Near Stanford University; First California Dinosaur North of Sacramento; New Emphasis on Geoscience in K-12 Education Leads to Opportunities for Changing Public Perception of the Mineral Industries; 1994 California Mineral Industry Survey; Earthquake Preparedness Resource Directory; New and Revised Official Maps of Earthquake Fault Zones of June 1, 1995; Two Geologists Retire [Earl Hart and Oscar Huber].
SEPTEMBER/OCTOBER 1995: Troilite from the Low Divide District; Are All Major California Cities Seriously Threatened by Earthquakes?; The Great California Recycling Adventure; Planet Ocean; Dancing to the Fossil Record; CDMG Online--DMG's computerized Bulletin Board System.
NOVEMBER/DECEMBER 1995: California Jade, A Geological Heritage; The Geology of the Franciscan Complex in the Ward Creek-Cazadero Area, Sonoma County, California; Classroom Activity Shows How to Determine Earthquake Intensities; George B. Cleveland – 1925-1995; Index to Volume 48 – 1995.

1994-Volume 47

MAY/JUNE 1994: Saltwater Springs Atop the Rumsey Hills, California; Unusual Phosphate Minerals and Diatom-Bearing Stalactites from the Farallon Islands; The Mineral Industry of California in 1993; Careers in the Geosciences.
JULY/AUGUST 1994: Geology of Prisoners Rock and The Peninsula: Pleistocene Hydrovolcanism in the Tule Lake Basin, Northeastern California; A Glimpse of Life in the Gold Country: Excerpts from John Doble's Journal and Correspondence; U.S. Geological Survey Videotape Library.
SEPTEMBER/OCTOBER 1994: The Indio Hills; Geology of Hayden Hill – A New Mine Revitalizing an Old Mining District; Global Change – Logs of Straw: Dendrochronology; Index to Statutory and Regulatory Reclamation Plan Requirements.
NOVEMBER/DECEMBER 1994: The Miners Law – Part I; Bergbaufreiheit; Agricola; Claims Notices; Calcite; Watt, Did You Say?; Going for the Gold; Index to Volume 47 – 1994.

1993-Volume 46

JANUARY/FEBRUARY 1993: The Landers-Big Bear Earthquake Sequence and its Felt Effects; Surface Faulting Associated with the June 1992 Landers Earthquake, California; Rockfalls and Surface Effects Other Than Faulting – Landers and Big Bear Earthquakes; Surface Rupture Along a Portion of the Emerson Fault; Landers Earthquake of June 28, 1992; DMG Clearinghouse for the June 28, 1992 Landers and Big Bear Earthquakes; The National Association of Geology Teachers Guidebook Publications.
MARCH/APRIL 1993: Gold-Bearing Quartz Veins in the Klamath Mountains in the Redding 1 x 2 Degree Quadrangle, Northern California; Mining California Calcite Crystals for the Optical Ring Sight.
MAY/JUNE 1993: Jamestown Leaf Gold; The Gold Bug Mine [El Dorado County]; The Mineral Industry of California – 1992; Gold, California State Mineral.
JULY/AUGUST 1993: Minerals; Arroyo Boulders – Anza-Borrego Desert, California; Mineral Experiments; AB 3098 Surface Mining and Reclamation Act (SMARA) Eligible List – July 1, 1993.
SEPTEMBER/OCTOBER 1993: Damaging Landslides Related to the Intense Rainstorms of January-February 1993, Southern California; California's Landslide Hazard Identification Project; DMG Landslide Publications (Exclusive of LHIMs); Crossword Puzzle – American Geologic Terms of Foreign Origin; A 15th Century Mining Lease.
NOVEMBER/DECEMBER 1993: Runoff and Erosion after the Oakland Firestorm; Expectations and Observations; Emergency Landslide Hazard Evaluation Following the Tunnel Fire, October 19-23, 1991; A Composite Volcano in Action; California’s Rocks, Minerals, and Decorative Stone Used by Native Americans; Index to Volume 46 – 1993.

1992-Volume 45

JANUARY/FEBRUARY 1992: Detachment Faults, California’s Extended Past; Mineralization Along Detachment Faults; California Has Its Faults; Faulted Wave-Cut Terrace Near Point Arena [Mendocino County], A Photo Essay.
MARCH/APRIL 1992: The Honeydew Earthquake, August 17, 1991; Sources of North Coast Seismicity; The Cape Mendocino Earthquakes, April 25-26, 1992.
MAY/JUNE 1992: California State Mining and Mineral Museum, Mariposa; History of the Mineral Museum.
JULY/AUGUST 1992: Calcareous Tufa Formations, Searles Lake and Mono Lake; Geometry of Normal Faulting in Tecopa Valley, California from Magnetic Surveys; April 22 Joshua Tree, and June 28 Landers and Big Bear Earthquakes, 1992; The Mineral Industry of California – 1991; Highlights of the Second Conference on Earthquake Hazards in the Eastern San Francisco Bay Area; The Quicksand Model – An Experiment.
SEPTEMBER/OCTOBER 1992: Captain Jack’s Stronghold, The Geologic Events that Created a Natural Fortress [Siskiyou County]; Medicine Lake Volcano and Lava Beds National Monument [Siskiyou and Modoc Counties]; Going Down the Tubes.
NOVEMBER/DECEMBER 1992: The Division of Mines and Geology’s Environmental Protection Program; Geologic Conditions at Three Rancho Palos Verdes Subdivisions [Los Angeles County]; Geologic Hazards at the New Bay Farm Island Elementary School [Alameda County]; Implementing an Award Winning Reclamation Plan at Castle Mountain Mine [San Bernardino County]; Sedimentation in a Highly Erosive Watershed [Salmon Creek, Humboldt County]; Brief History of Measurement Systems; Index to Volume 45 – 1992.

1991-Volume 44

AUGUST 1991: Travertine Hot Springs [Mono County]; Simplified Geologic Map of California; Mariposite – The Rock that Made California Famous.
SEPTEMBER 1991: Preparation and Use of Earthquake Planning Scenarios; Earthquake Planning Scenario for the San Diego-Tijuana Area; Earthquake Bibliography.
OCTOBER 1991: The Mineral Industry of California in 1990; Geology at the Intersection of the Garlock and Death Valley Fault Zones, Northern Avawatz Mountains [Field Trip Road Log]; Alquist-Priolo Special Studies Zones [Official Maps – November 1991]; Mining Crossword Puzzle.
NOVEMBER 1991: Decomposed Granite; Timber Harvesting in Granitic Terrain – Grass Valley Creek [Trinity County]; Geologic Terms of Spanish Origin.
DECEMBER 1991: Snow Lake Pendant, Yosemite-Emigrant Wilderness – Evidence for a Major Strike-Slip Fault within the Sierra Nevada, California; Muir, Whitney, and the Origin of Yosemite Valley – In Defense of Whitney; Update on the Surface Mining and Reclamation Act of 1975.