In 1947, in his classical paper on the thermodynamic properties of isotopic substances, HC
Urey [1] laid the foundation of modern isotope geochemistry. At the same time, AO Nier [2] …

This paper describes a synthesis characterized by broad scope, substantial support, and
some speculation. The framework for the synthesis is the speculative concept that the …

Since the early 1950s, the number of international measurement standards for anchoring
stable isotope delta scales has mushroomed from 3 to more than 30, expanding to more …

The nine editions of Stable Isotope Geochemistry have appeared over a time span of nearly
50 years. The first edition (1973) appeared as a slim book of 135 pages. Due to the rapid …

Sedimentary organic-matter constituents, including thermal-alteration products, are useful in
the evaluation of petroleum potential in western Canada. It is an accepted hypothesis that …

The present-day state as well as the history of isotope organic geochemistry is reviewed.
Theoretical aspects of isotope fractionation in a system of complex organic molecules …

Geochemical studies of Cretaceous strata rich in organic carbon (OC) from Deep Sea
Drilling Project (DSDP) sites and several land sections reveal several consistent …

Samples of marine plankton collected in high-latitude areas of the South Atlantic where
surface water temperatures are near 0° C show a carbon-12 enrichment of 6 per mill relative …

The sterol contents of plankton and sediment samples have been determined. Cholesterol,
22-dehydrocholesterol, brassicasterol, campesterol, 24-methylenecholesterol, stigmasterol …

The molecular compositions and stable carbon and hydrogen isotope fractionations
associated with the production of lower-molecular-weight hydrocarbons by pyrolysis of …