Browsing Геология России by Subject "(U-TH)/HE DATING"

Now showing items 1-3 of 3

SINGLE GRAIN (U-TH)/HE AGES FROM PHOSPHATES IN ACAPULCO METEORITE AND IMPLICATIONS FOR THERMAL HISTORY

Min K.; Farley K.A.; Renne P.R.; Marti K. (2003)

The cooling history of the Acapulco meteorite for >400°C is well established using various chronometers suggesting extremely fast cooling (>1000°C/Ma). In contrast, the thermal history for low temperatures (<400°C) is ...
SOLVING THE PRODUCTION-DIFFUSION EQUATION FOR FINITE DIFFUSION DOMAINS OF VARIOUS SHAPES - PART I. IMPLICATIONS FOR LOW-TEMPERATURE (U-TH)/HE THERMOCHRONOLOGY

Meesters A.G.C.A.; Dunai T.J. (2002)

We propose an accurate, fast and easy-to-use method to derive numerical solutions for production-diffusion equations for finite diffusion domains of various shapes and arbitrary cooling histories. Previous studies provide ...
SOLVING THE PRODUCTION-DIFFUSION EQUATION FOR FINITE DIFFUSION DOMAINS OF VARIOUS SHAPES - PART II. APPLICATION TO CASES WITH α-EJECTION AND NONHOMOGENEOUS DISTRIBUTION OF THE SOURCE

Meesters A.G.C.A.; Dunai T.J. (2002)

In this paper, numerical methods derived in Part I (Chem. Geol. (2002)) are expanded to accommodate the effects of α-emission and zonation of U and Th as relevant for (U-Th)/He thermochronology. Expressions for the required ...

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