## Encyclopedia of Physical Science and Technology, Volume 1 |

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Page 270

As the temperature drops, eventually

the effective motion of atomic isotopes between minerals is blocked. The

maximum temperature at which this happens for a particular mineral is the

closure ...

As the temperature drops, eventually

**diffusion**will become sluggish enough thatthe effective motion of atomic isotopes between minerals is blocked. The

maximum temperature at which this happens for a particular mineral is the

closure ...

Page 271

Equation (6) can be used to solve for the closure temperature T0 if the mineral

radius a, the cooling rate s, and the

The variations in 7"0 with * and a are reduced because they appear in the

logarithmic ...

Equation (6) can be used to solve for the closure temperature T0 if the mineral

radius a, the cooling rate s, and the

**diffusion**parameters A and £a are known.The variations in 7"0 with * and a are reduced because they appear in the

logarithmic ...

Page 273

On the other hand, if the profile belongs to the mineral with the faster

coefficient, then /3/-y = (A«°/£a)[D(r0)siow/£>(7'o)fas,] (12) and /3/y has much

smaller values. The other critical parameter, y', is given by y' = lE,srf)/lDlTQ)RTl] (

13) ...

On the other hand, if the profile belongs to the mineral with the faster

**diffusion**coefficient, then /3/-y = (A«°/£a)[D(r0)siow/£>(7'o)fas,] (12) and /3/y has much

smaller values. The other critical parameter, y', is given by y' = lE,srf)/lDlTQ)RTl] (

13) ...

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### Contents

Geosynchronous Spacecraft | 287 |

Fusion Devices Explosive 1 Brij Agrawal | 323 |

Game Theory 37 Glacial Geology | 361 |

Copyright | |

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acid acoustic astatine atoms Bragg Bragg diffraction carbon chemical column combustion complex components composition compounds COS-B crystal cycle deposits detector diffraction distribution earth efficiency electric electron elements energy equation example field flow fluid fluorine formation frequency fuel function fuzzy fuzzy set galaxies gamma rays gas turbine geologic Geomorphology geothermal glacial glacier glass glass-ceramics graph Green's function groundwater halides halogen heat exchanger heterocycles hologram hydrocarbons hydrogen bond ice sheet interaction ions kerogen layers liquid magnetic mass material matrix measured melting ments minerals molecules operation optical orbit oxidation oxygen particles phase pressure produced proton pyridine radiation reaction result rock rotation rotor satellite sedimentary sediments shown in Fig solar solution spacecraft stable streams structure subgroup surface Table temperature thermal tion transducer turbine ture variogram velocity vertices wave waveguide zone