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The total amount of Hg discharged into Clear Lake over the past 15,000 years is estimated to be at least 2,400 metric tons." [57] [58] [59] The EPA-funded research by UC Davis found that total levels of mercury (TotHg) in the lake sediments has "not declined significantly a decade after" the remediation work in 1992 at Sulphur Bank Mine. [60]
Clear Lake (Pomo: Lypoyomi) [2] [3] is a natural freshwater lake in Lake County in the U.S. state of California, north of Napa County and San Francisco. It is the largest natural freshwater lake wholly within the state, with 68 square miles (180 km 2 ) of surface area.
The Index to Marine & Lacustrine Geological Samples is a collaboration between multiple institutions and agencies that operate geological sample repositories. The purpose of the database is to help researchers locate sea floor and lakebed cores, grabs, dredges, and drill samples in their collections.
Clear Lake, one of California's oldest and most-visited lakes, is not so clear anymore after an algal bloom turned the water cloudy and green.. Images from NASA underscore the dramatic change in ...
Lake-sediment cores, in particular, facilitate a more comprehensive analysis of an area because of the continual accumulation of sediment as well as other organic matter such as pollen and charcoal. Sediment cores can also be dated quite accurately, often allowing for lake histories to be reconstructed in chronological sequence.
The Clear Lake Volcanic Field is a volcanic field beside Clear Lake in California's northern Coast Ranges. The site of late- Pliocene to early Holocene activity, the volcanic field consists of lava domes , cinder cones , and maars with eruptive products varying from basalt to rhyolite . [ 2 ]
The Core Research Center is a facility run by the United States Geological Survey, located in "F" bay in building 810 on the Denver Federal Center campus. It is maintained by the USGS to preserve valuable rock cores, well cuttings and various other geologic samples for use by scientists and educators from government, industry and academia.
Scotts Creek is a stream in Lake County, California, the largest tributary of Clear Lake.It rises to the south of Cow Mountain in the Mayacamas Mountains, then flows southeast towards Clear Lake, running through the fertile Scotts Valley and the seasonal Tule Lake before joining Middle Creek and flowing into the lake via Rodman Slough.