Fluid Movements — Element Transport and the Composition of the Deep CrustSpringer Science & Business Media, 31/07/1989 - 436 من الصفحات Many geologists have an equivocal attitude to fluid movements within the crust and the associated changes in the chemical and physical properties of crustal rocks. The controversies earlier this centuary between the "soaks" and the "pontiffs" memorably summarised by H. H. Read (1957) in The Granite Controversy have largely been resolved. Few would now advocate the formation of large granitic bodies by in situ transformation of pre-existing crust as the result of the passage of ichors without the formation of a granitic melt. To many geochemists fluid transport and metasomatism have become slightly suspect processes which at the most locally disturb the primary geochemical and isotopic signatures. While there is common agreement that there are marked differences in the composition of the lower and upper crust, the role of fluid movement as one of the controls of this differentiation is often neglected in favour of suggested primary differences in the composition of igneous rocks emplaced at different depths. Selective fluid transport however provides many geologists with their livelyhood. Without the secondary concentration of commercially important elements by fluids within the crust the mining industry, geological science and human activities based on their products would be very different. |
المحتوى
MAGMAS AS A SOURCE OF HEAT AND FLUIDS IN GRANULITE METAMORPHISM | 1 |
THE IMPORTANCE OF FLUID MOVEMENTS | 19 |
CONTRASTING MECHANISMS OF CHARNOCKITE FORMATION IN THE AMPHIBOLITE TO QRANULITE GRADE TRANSITION ZONES O... | 29 |
METAMORPHISM AND MELTING AT AN EXPOSED EXAMPLE OF THE CONRAD DISCONTINUITY KAPUSKASING UPLIFT CANADA | 51 |
MELTINDUCED FLUID PUMPING AND THE SOURCE OF CO2 IN GRANULITES | 61 |
PT AND FLUID EVOLUTION OF THE ANGMAGSSALIK CHARNOCKITE COMPLEX SE GREENLAND | 71 |
PROCESSES OF FORMATION AND RETROGRESSION OF SCOURIAN GRANULITES | 95 |
HYDROTHERMAL GRAPHITE VEINS AND ACADIAN GRANULITE FACIES METAMORPHISM NEW HAMPSHIRE USA | 117 |
MASS TRANSFER RELATED TO DUCTILE SHEAR ZONE DEVELOPMENT IN A METAGABBRO | 213 |
INCORPORATION OF RB IN MUSCOVITE DURING PROGRESSIVE MEDIUM GRADE METAHORPHISM AN INTERPRETATION OF EXPER... | 231 |
FLUID CONTROL ON EMPLACEMENT OF SIALIC MAGMAS DURING ARCHAEAN CRUSTAL ACCRETION | 235 |
THE ISOTOPIC CHARACTERIZATION OF AQUEOUS AND LEUCOGRANTTIC CRUSTAL FLUEOS | 245 |
STABLE ISOTOPE FRONTS AND CRUSTAL BUFFERING 1DIMENSIONAL MASS BALANCE AND KINETICS | 265 |
THE EFFECT OF FLUIDCONTROLLED ELEMENT MOBILITY DURING METAMORPHISM ON WHOLE ROCK ISOTOPE SYSTEMS SOME T... | 277 |
ON THE POSSIBLE ROLE OF FLUID TRANSPORT IN THE DISTRIBUTION OF U AND Pb IN AN ARCHAEAN GNEISS COMPLEX | 299 |
FLUID MOVEMENT AND INTERPRETATION OF PbPb ISOTOPIC DATA | 319 |
THE CRUSTAL ORIGIN OF ECLOGITE STATIC OR DYNAMIC | 121 |
RETROGRESSION AND FLUID MOVEMENT ACROSS A GRANULITEAMPHIBOLITE FACIES BOUNDARY IN MIDDLE ARCHAEAN NUK G... | 125 |
MINERAL CHANGES ELEMENT MOBILITY AND FLUIDS ASSOCIATED WITH DEEP SHEARING IN THE MOUNT HELEN STRUCTURAL ... | 139 |
REACTIONS FLUID COMPOSITIONS AND IMPLICATIONS FOR REGIONAL STUDIES | 151 |
DEFORMATION AND MASS TRANSPORT IN THE NORDRE STR0MFJORD SHEAR ZONE CENTRAL WEST GREENLAND | 171 |
METASOMATIC ALTERATION OF ULTRAMAFIC ROCKS | 187 |
MASS BALANCE OF A 6ABBR0IC ROCKAMPHIBOLITE TRANSITION | 203 |
CHANOES IN THE ISOTOPIC COMPOSITION OF WHOLEROCK Pb DURING DIFFERENT STAGES OF RETROGRESSION OF LATE ARCHAE... | 331 |
NEW INVESTIGATIONS | 345 |
Permeability bulk modulus and complex resistivity in crystalline rocks | 361 |
interpretation by zeta potential and complex resistivity measurements | 377 |
395 | |
طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
Amitsoq amphibolite facies amphibolite facies gneisses anorthosite Archaean gneisses assemblages Baadsgaard biotite Bridgwater carbonate charnockite chemical Collerson complex components continental crust Cosmochim country rock crustal Deep Crust deformation depleted dykes early Archaean Earth Planet eclogite Element Transport emplacement evolution feldspar fluid inclusions Fluid Movements fluid phase formation garnet gneiss geochemical geochemistry Geol Geological gneisses Godthåbsfjord granite granulite facies granulite facies gneisses granulite facies metamorphism grey gneisses hydrothermal hydrous igneous intrusion isochron isotopic composition Isua Kangimut sammisoq Kapuskasing late Archaean mafic magma mass transfer melagabbro metasomatism migmatitic Moorbath muscovite mylonitic Nutman orthogneiss orthopyroxene outcrop partial melting Pb-Pb pegmatite permeability plagioclase pressure processes Proterozoic protoliths quartz Qugssuk ratios Rb-Sr reactions regional retrograded gneisses retrogression samples Schiøtte Scourian shear zone SiO2 southern West Greenland supracrustal Taylor tectonic temperature terrane tonalitic Touret transition U-Pb Uivak ultramafic undeformed variations volume whole rock zircon