Dolostone as a reliable tracer of seawater lithium isotope composition

Review of the Lithium Isotope System as a Geochemical Tracer

Lithium isotopes have many advantageous characteristics as geochemical tracers for a wide range of geological processes, covering fluid/melt-mineral interactions from the Earth’s surface to the mantle. The latest developments in Li isotope geochemistry, in terms of measuring techniques, major geochemical reservoirs, the contrasting behaviors during near-surface weathering, and crust/ mantle cyc...

Oxygen Isotope Composition of Seawater

A radon-thoron isotope pair as a reliable earthquake precursor

Abnormal increases in radon ((222)Rn, half-life = 3.82 days) activity have occasionally been observed in underground environments before major earthquakes. However, (222)Rn alone could not be used to forecast earthquakes since it can also be increased due to diffusive inputs over its lifetime. Here, we show that a very short-lived isotope, thoron ((220)Rn, half-life = 55.6 s; mean life = 80 s),...

A normalised seawater strontium isotope curve

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮

O-isotope Composition of as Abs

drich, P Jenniskens, and M. H. Shaddad, Geophysical Laboratory, Carnegie Institution, Washington, DC 20015 ([email protected]), NASA Johnson Space Flight Center, 2101 NASA Parkway, Houston, TX 77058, Department of Chemistry, Fordham University, 441 East Fordham Road, Bronx, NY 10458, Carl Sagan Center, SETI Institute, 515 North Whisman Road, Mountain View, CA 94043, Department of Physics, Unive...