ALBERT

Note: Zugleich: Dissertation, Universität Bremen, 1989 , Zusammenfassung in englischer Sprache

Note: Table of Contents: Copyright; Additional copies. - Foreword and acknowledgements. - Chapter 1. Cosmochemistry of the Rare Earth Elements: Condensation and Evaporation Processes / by William V. Boynton. - Introduction. - Meteorites. - Astrophysical context for interpretation of cosmochemical data. - Solar nebula. - Solar abundances. - Cosmochemical properties of the REE. - REE condensation reactions. - Activity coefficients. - Partial pressures. - Solid / gas distribution coefficients. - Why are the REE volatilities so different?. - Calculated REE patterns. - Early condensates. - Removing REE in the gas. - Comparison with meteoritic data. - Ultra-refractory component. - Group II inclusions. - FUN inclusions. - REE condensation as a function of oxygen fugacity. - Rims on CAI. - What have we learned from the REE?. - High temperatures were achieved in the solar nebula. - A very efficient mechanism for gas/dust separation existed in the solar nebula. - The high nebular temperatures existed for a long time. - A very intense, very brief, heat source also existed. - The solar nebula was a chaotic environment. - Summary. - Acknowledgements. - References. - Chapter 2. Radiogenic Isotope Geochemistry of Rare Earth Elements / by P. Jonathan Patchett. - Introduction. - Long-lived radioactive isotopes of Rare Earth Elements. - 138La-138Ce decay. - 147Sm-143Nd decay. - 176Lu-176Hf decay. - Cemical variations of La/Ce, Sm/Nd and Lu/Hf ratios. - Geochronological studies. - La-Ce and Lu-Hf chronology. - Sm-Nd chronology. - Defining bulk planetary isotopic evolution. - Isotopic study of planetary interiors. - The Moon. - The Earth. - Nd isotopes in studies of terrestrial crustal evolution. - Model Nd ages of continental crust. - Growth curves for the continental crust. - Origin of granitoids. - Nd isotopes and the sedimentary system. - Characterization of whole crustal terranes. - Crustal Lu-Hf isotopic studies. - Major unsolved problems. - Continental crustal growth curve. - Abundance of Archean continental crust. - Origin of mantle isotopic variations. - References. - Chapter 3. Partitioning of Rare Earth Elements between Major Silicate Minerals and Basaltic Melts / by Gordon A. McKay. - Introduction. - Usefulness of the REE for petrogenetic modelling. - Scope of this chapter. - Caveat. - How partition coefficients are measured. - Phenocryst/matrix studies of natural samples. - Experimental measurement of partition coefficients. - Basic experimental approach. - Equilibrium. - Percent level doping technique. - Beta-track mapping technique. - Other experimental approaches. - Henry's law: The applicability of percent-level doping results. - Factors governing mineral/melt partitioning. - Ionic size and charge of trace element. - Crystal field effects. - Cristallographic versus defect sites: The Henry's law question. - Phase compositions. - Oxidation state. - Thermodynamic relationships: Dependence of partitioning on temperature and composition. - Other predictive approaches. - Special applications. - Eu as an oxygen fugacity indicator. - Origin of the Eu anomaly in lunar mare basalts. - REE partition coefficient patterns for the major minerals. - Plagioclase. - Olivine. - Pyroxene. - Low-Ca pyroxene. - High-Ca pyroxene. - Garnet. - Future directions. - Acknowledgements. - References. - Chapter 4. An Approach to Trace Element Modeling Using a Simple Igneous System as an Example / by Gilbert N. Hanson. - Introduction. - Review of trace element equations. - Melting. - Fractional crystallization. - Melting versus fractional crystallization. - Essential structural constituents. - Example of petrogenetic approach. - Discussion and summary. - Acknowledgements. - References. - Chapter 5. Rare Earth Elements in Upper Mantle Rocks / by W. F. McDonough and Fredrick A. Frey. - Introduction. - Massive peridotites. - Massive peridotites: dominantly lherzolite Western Alps - Lanzo. - Western Alps -Baldissero, Balmuccia. - Eastern Liguria, Italy. - Western Liguria, Italy. - Eastern Pyrenees - France. - Ronda, Spain Effects of late stage alteration on REE. - What can be inferred about the melting process and the segregated melts?. - Massive peridotites: pyroxenite layers and veins and their wall rocks. - Amphibole-bearing pyroxenite veins. - Anhydrous pyroxenite layers. - How were the pyroxenite layers created? Evidence for multistage processes. - Implications for mantle enrichment processes (metasomatism). - Massive peridotites: dominantly harzburgite. - Oceanic peridotites. - Ultramafic xenoliths. - Group I spinel peridotites. - Garnet peridotites. - Pyroxenite and related xenoliths. - Models for REE abundance trends in peridotite xenoliths. - Megacrysts, minerals in xenoliths and damong inclusions. - Megacrysts. - Minerals in peridotites and pyroxenites. - Inclusions in diamonds. - Summary: comparison of peridotites from massifs and xenoliths and implications of REE data for Upper Mantle composition. - Acknowledgements. - References. - Chapter 6. Rare Earth Elements in Metamorphic Rocks / by Richard I. Grauch. - Introduction. - REE residence in metamorphic rocks. - REE mobility during metamorphism. - REE content of metamorphic rocks. - Suggestions for future work. - Acknowledgements. - References. - Chapter 7. Rare Earth Elements in Sedimentary Rocks: Influence of Provenance and Sedimentary Processes / by Scott M. McLennan. - Introduction. - Rare earth element properties and sedimentary rocks. - Cosmochemical considerations. - Geochemical considerations. - Aqueous geochemistry. - Normalizing and notation. - Sedimentary processes. - Weathering. - Diagenesis. - Sedimentary sorting. - REE and provenance studies. - Sedimentary rocks and crustal abundances. - Sedimentation and plate tectonics. - Archean sedimentary rocks and the Archean crust. - Archean greenstone belts. - REE in sedimentary rocks and crustal evolution. - Acknowledgements. - References. - Chapter 8. Aqueous Geochemistry of Rare Earth Elements / by Douglas G. Brookins. - Introduction. - The trivalent lanthanides (Ln III). - Types of complexes in solution. - Hydrolysis products. - Phosphate complexes. - Carbonate complexes. - Halide complexes. - Complexes with total dissolved sulfur. - Gadolinium-Terbium fractionation?. - Scandium and Yttrium. - Europium (II). - Cerium (IV). - Eh-pH diagrams. - Cerium. - Europium. - Other lanthanides. - Lanthanides in ocean waters. - Lanthanides and actinides. - Concluding remarks. - Acknowledgements. - References. - Chapter 9. Rare Earth Elements in Lunar Materials / by Larry A. Haskin. - Introduction. - The nature of planet moon. - The magma ocean hypothesis and its presumed products. - Lunar REE patterns. - Highland plutonic rocks. - Anorthosites. - Durâtes, troctolites, norites, and gabbros. - Lunar felsite (granite). - Highland volcanic rocks: KREEP. - Mare basalts. - Mare basalt sources as magma ocean products. - Assimilation of crusted material during basalt petrogenesis. - Glassy spherules. - Soils and breccias. - Caveat. - Acknowledgements. - References. - Chapter 10. Compositional and Phase Relations among Rare Earth Element Minerals / by Donald M. Burt. - Introduction. - Geochemical background. - Minerals. - Coupled substitutions. - Vector treatment. - Application to selected mineral groups. - Fluorides. - Carbonates. - Fluorocarbonates. - Monazite, xenotime, zircon, and related phases. - Apatites. - Florencite and related phases. - A-B oxides (niobates, tantalates, titanates, ferrites). - Fergusonitelbetafergusonite, ABO4. - Perovskite, ABO3. - Aeschyniteleuxenite, AB2O6. - Pyrochlore, A1-2B2O6(O,F,OH). - Allanite. - Titanite. - Garnet. - Gadolinite. - Chevkinite/perrierite. - Element distributions: acid-base relations. - Summary. - Acknowledgemen

Note: Contents: List of contributors. - Preface. - 1 An Overview of Rates of Chemical Weathering / S. M. Colman and D. P. Dethier. - PART I KINETICS AND MECHANISMS OF WEATHERING REACTIONS. - 2 The Relations between Crystal Structure and Silicate Weathering Rates / R. A. Eggleton. - 3 The Dissolution Rate of Forsteritic Olivine from Hawaiian Beach Sand / D. E. Grandstaff. - 4 Stoichiometry of Alkali Feldspar Dissolution at Room Temperature and Various pH Values / G. R. Holdren, Jr. and P. M. Speyer. - 5 Rate Limitation and Dissolution of Highly Soluble Minerals / J. B. Laronne. - PART II RATES OF MINERAL ALTERATION IN SOIL ENVIRONMENTS. - 6 The Etching of Hornblende Grains in the Matrix of Alpine Tills and Periglacial Deposits / R .D. Hall and R. E. Martin. - 7 Rates of Hornblende Etching in Soils on Glacial Deposits, Baffin Island, Canada / W. W. Locke. - 8 Rates of Mineral Weathering in the Wind River Mountains, Western Wyoming / W. C. Mahaney and D. L. Halvorson. - 9 Evolution of Iron Crusts in Tropical Landscapes / D.B. Nahon. - 10 Processes and Rates of Weathering in Cold and Polar Desert Environments / F. C. Ugolini. - PART III WEATHERING OF VOLCANIC ASHES AND DEPOSITS. - 11 Weathering of Holocene Airfall Tephras in the Southern Canadian Rockies / R. H. King. - 12 Controls on the Rates of Weathering and Clay Mineral Genesis in Airfall Tephras: A Review and New Zealand Case Study / D. J. Lowe. - 13 Rates of Weathering of 14C-Dated Late Quaternary Volcaniclastic Deposits in the Western United States / V. E. Neall and I. K. Paintin. - 14 Chemical Weathering of the May 18, 1980, Mount St. Helens Ash Fall and the Effect on the Iron Creek Watershed, Washington / A. F. White and L. V. Benson and A. Yee. - PART IV RATES OF FORMATION OF ROCK-WEATHERING FEATURES. - 15 Levels of Time Information in Weathering Measurements, with Examples from Weathering Rinds on Volcanic Clasts in the Western United States / S. M. Colman. - 16 Weathering Rates in Granitic Boulders Measured by P-Wave Speeds / R. Crook, Jr. and A. R. Gillespie. - 17 Growth of Weathering Rinds on Torlesse Sandstone, Southern Alps, New Zealand / I. E. Whitehouse and M. J. McSaveney and P. L. K. Knuepfer and T. J. H. Chinn. - PART V HYDROCHEMICAL STUDIES OF RATES OF WEATHERING. - 18 The Mathematical Basis for Determining Rates of Geochemical and Geomorphic Processes in Small Forested Watersheds by Mass Balance: Examples and Implications / M. A. Velbel. - 19 An Estimate of Plagioclase Weathering Rate in the Idaho Batholith Based upon Geochemical Transport Rates / J. L. Clayton. - 20 The Use of Catchment Studies for Assessing Chemical Weathering Rates in Two Contrasting Upland Areas in Northeast Scotland / J. Creasey and A. C. Edwards and J. M. Reid and D. A. MacLeod and M. S. Cresser. - 21 Weathering Rates and the Chemical Flux from Catchments in the Pacific Northwest, U.S.A. / D. P. Dethier. - 22 Rates of Weathering and Erosion Derived from Mass Balance in Small Drainage Basins / T. Paces. - 23 Processes and Rates of Saprolite Production and Erosion on a Foliated Granitic Rock of the Virginia Piedmont / M. J. Pavich. - Index.