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geochronology
The chronology of the Earth generated from geological information; the science of the absolute and relative dating of geological formations and events.
geochronology Quick reference
A Dictionary of Geography (5 ed.)
... The chronology of the Earth generated from geological information; the science of the absolute and relative dating of geological formations and...
geochronology Quick reference
A Dictionary of Genetics (8 ed.)
... a science that deals with the measurement of time in relation to the earth’s evolution. See Appendix C , 1953, Patterson; 1954, Barghoorn and Tyler; 1980,...
geochronology Quick reference
A Dictionary of Geology and Earth Sciences (5 ed.)
... Determination of time intervals on a geologic scale, through either absolute or relative dating methods. Absolute dating methods involve the use of radioactive elements and knowledge of their rates of decay: this yields an actual age in years for a given rock or fossil . Relative dating involves the use of fossils or sediments to place events and rock sequences in order, and does not provide absolute dates. See also dating methods ; absolute age ; relative age ; planktonic geochronology ; geochronometry...
Geochronology Reference library
Encyclopedia of Evolution
... Geochronology is the scientific study of the ages of ancient geological and archaeological deposits. Geochronologists are geologists, physicists, or chemists who use a variety of scientific methods to analyze geological, biological, and artifactual materials to determine the time when they were formed or deposited. Geochronological measurements are based on three principles: first, that some physical process has been steadily affecting the material to be dated; second, that we can measure the extent to which the process has occurred, usually by...
geochronology Quick reference
A Dictionary of Environment and Conservation (3 ed.)
... The science of absolute and relative dating of geological formations and...
geochronology Quick reference
A Dictionary of Ecology (5 ed.)
... The determination of time intervals on a geologic scale, through either absolute or relative dating methods. Absolute dating methods involve the use of radioactive elements and knowledge of their rates of decay: this yields an actual age in years for a given rock or fossil. Relative dating involves the use of fossils or sediments to place events and rock sequences in order, and does not provide absolute...
planktonic geochronology Quick reference
A Dictionary of Plant Sciences (4 ed.)
...geochronology The use of planktonic organisms (e.g. microscopic algae) to provide a relative dating of sediments deposited in marine waters. Radioactive-decay methods applied to planktonic organisms may also yield an absolute date or information on...
planktonic geochronology Quick reference
A Dictionary of Geology and Earth Sciences (5 ed.)
...geochronology The use of planktonic organisms, e.g. globigerinid foraminiferids or microscopic algae , to provide a relative dating of sediments deposited in marine waters. Radioactive-decay methods applied to planktonic organisms may also yield an absolute date or information on...
planktonic geochronology Quick reference
A Dictionary of Ecology (5 ed.)
...geochronology The use of planktonic organisms (e.g. globigerinid foraminiferids or microscopic algae) to provide a relative dating of sediments deposited in marine waters. Radioactive-decay methods applied to planktonic organisms may also yield an absolute date or information on...
stratigraphy and geochronology Reference library
The Oxford Companion to the History of Modern Science
...and geochronology . The principles of stratigraphy— the study of the earth's strata or layers of sedimentary rock— and of geochronology— the naming and describing, though not necessarily dating, of the periods of earth history— were established rapidly between 1810 and 1840 . For the next century, stratigraphers filled in the details of the stratigraphic column with ever-greater precision. Much of this research could be put to good use by the mining industry, and from the 1920s and 1930s by the petroleum industry. Although stratigraphy flowered in...
geochronology
planktonic geochronology
Unified Stratigraphic Time-scale
samarium–neodymium dating
