Major carbon-14 deficiency in modern snail shells from southern Nevada springs
Journal Article
·
· Science (Washington, D.C.); (United States)
Carbon-14 contents as low as 3.3 +/- 0.2% modern (apparent age, 27,000 years) measured from the shells of snails Melanoides tuberculatus living in artesian springs in southern Nevada are attributed to fixation of dissolved HCO/sub 3//sup -/ with which the shells are in carbon isotope equilibrium. Recognition of the existence of such extreme deficiencies is necessary so that erroneous ages are not attributed to fresh water biogenic carbonates. 2 figures, 1 table.
- Research Organization:
- Geological Survey, Reston, VA
- OSTI ID:
- 6676858
- Journal Information:
- Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 224; ISSN SCIEA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
58 GEOSCIENCES
580100* -- Geology & Hydrology-- (-1989)
ACCURACY
ACID CARBONATES
AGE ESTIMATION
ALKALINE EARTH METAL COMPOUNDS
ANIMALS
AQUATIC ORGANISMS
ARTESIAN BASINS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON 14
CARBON COMPOUNDS
CARBON ISOTOPES
CARBONATES
DOCUMENT TYPES
EVEN-EVEN NUCLEI
FEDERAL REGION IX
INVERTEBRATES
ISOTOPE DATING
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MOLLUSCS
NEVADA
NORTH AMERICA
NUCLEI
OXYGEN COMPOUNDS
RADIOISOTOPES
REVIEWS
SNAILS
USA
WATER SPRINGS
YEARS LIVING RADIOISOTOPES
580100* -- Geology & Hydrology-- (-1989)
ACCURACY
ACID CARBONATES
AGE ESTIMATION
ALKALINE EARTH METAL COMPOUNDS
ANIMALS
AQUATIC ORGANISMS
ARTESIAN BASINS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM CARBONATES
CALCIUM COMPOUNDS
CARBON 14
CARBON COMPOUNDS
CARBON ISOTOPES
CARBONATES
DOCUMENT TYPES
EVEN-EVEN NUCLEI
FEDERAL REGION IX
INVERTEBRATES
ISOTOPE DATING
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MOLLUSCS
NEVADA
NORTH AMERICA
NUCLEI
OXYGEN COMPOUNDS
RADIOISOTOPES
REVIEWS
SNAILS
USA
WATER SPRINGS
YEARS LIVING RADIOISOTOPES