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  • 1
    Keywords: Orogeny Congresses ; Plate tectonics Congresses ; Plate tectonics ; Earth (Planet) Congresses Crust ; Konferenzschrift ; Geodynamik ; Tektonik ; Metamorphose ; Subduktion ; Gestein ; Kreislauf ; Einschmelzung ; Magmatismus ; Lithosphäre ; Orogenese ; Plattentektonik ; Kontinentale Erdkruste
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (408 Seiten)
    ISBN: 1862390800
    Series Statement: Geological Society special publication 184
    DDC: 551.1/3
    RVK:
    Language: English
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  • 2
    Online Resource
    Online Resource
    La Vergne :RSC,
    Keywords: Electronic books.
    Description / Table of Contents: A concise but comprehensive annual survey of a vast field of study enabling the reader to rapidly keep abreast of the latest developments in this specialist area.
    Type of Medium: Online Resource
    Pages: 1 online resource (363 pages)
    Edition: 1st ed.
    ISBN: 9781847554345
    Series Statement: ISSN Series
    Language: English
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  • 3
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Organophosphorus compounds - Periodicals. ; Electronic books.
    Description / Table of Contents: A concise but comprehensive annual survey of a vast field of study enabling the reader to rapidly keep abreast of the latest developments in this specialist area.
    Type of Medium: Online Resource
    Pages: 1 online resource (311 pages)
    Edition: 1st ed.
    ISBN: 9781847554338
    Series Statement: Issn Series
    DDC: 547.07 21
    Language: English
    Note: Organophosphorus Chemistry -- Contents -- Chapter 1 Phosphines and Phosphonium Salts -- 1 Phosphines -- Preparation -- From Halogenophosphines and Organometallic Reagents -- From Metallated Phosphines -- By Addition of P-H to Unsaturated Compounds -- By Reduction -- Miscellaneous Methods of Preparation -- Reactions -- Nucleophilic Attack at Carbon -- Nucleophilic Attack at Halogen -- Nucleophilic Attack at Other Atoms -- Miscellaneous Reactions -- 2 Phosphonium Salts -- Preparation -- Reactions -- Alkaline Hydrolysis -- Additions to Unsaturated Phosphonium Salts -- Miscellaneous Reactions -- 3 Phospholes and Phosphorins -- Chapter 2 Quinquecovalent Phosphorus Compounds -- 1 Introduction -- 2 Structure and Bonding -- 3 Phosphoranes containing a P-H Bond -- 4 Acyclic Phosphoranes -- 5 Four-membered-ring Phosphoranes -- 6 Five-membered-ring Phosphoranes -- 7 Hexaco-ordinated Phosphorus Compounds -- Chapter 3 Halogenophosphines and Related Compounds -- 1 Introduction -- 2 Halogenophosphines -- Preparation -- Reactions with Carbonyl Compounds and Related Compounds -- Reactions with Group V Donors -- Reactions with Carbanions, Alkenes, and Aromatic Compounds -- Insertion Reactions of Silylphosphines -- Physical and Structural Aspects -- 3 Halogenophosphoranes -- Structural -- Preparation -- Reactions with Nitrogen Compounds -- Reactions Relevant to Organic Synthesis -- Chapter 4 Phosphine Oxides and Related Compounds -- 1 Introduction -- 2 Preparation of Acyclic Oxides -- 3 Preparation of Cyclic Oxides -- 4 Structural and Physical Aspects -- 5 Reactions at Phosphorus -- 6 Reactions of the Side-Chain -- 7 Phosphine Oxide Donor-Acceptor Complexes, and Extractants -- Chapter 5 Tervalent Phosphorus Acids -- 1 Introduction -- 2 Phosphorous Acid and its Derivatives -- Nucleophilic Reactions -- Attack on Saturated Carbon -- Attack on Unsaturated Carbon. , Attack on Nitrogen -- Attack on Oxygen -- Attack on Halogen -- Electrophilic Reactions -- Cyclic Esters of Phosphorous Acid -- Miscellaneous Reactions -- 3 Phosphonous and Phosphinous Acids and their Derivatives -- Chapter 6 Quinquevalent Phosphorus Acids -- 1 Synthetic Methods -- General -- Phosphoric Acid and its Derivatives -- Phosphonic and Phosphinic Acids and their Derivatives -- 2 Reactions -- General -- Phosphoric Acid and its Derivatives -- Phosphonic and Phosphinic Acids and their Derivatives -- Chapter 7 Phosphates and Phosphonates of Biochemical Interest -- 1 Introduction -- 2 Coenzymes and Cofactors -- 3 Sugar Phosphates -- 4 Phospholipids -- 5 Phosphonates -- 6 Enzyme Mechanisms -- 7 Phosphorylated Proteins -- 8 Other Compounds of Biochemical Interest -- Chapter 8 Cyclophosphamide and its Congeners -- 1 Introduction -- 2 The Rationale for the Synthesis of Cyclophosphamide -- 3 The Current Status of Knowledge of the Metabolism of Cyclophosphamide -- 4 The Synthesis of Analogues of Cyclophosphamide and their Metabolites -- 5 Biological Properties of Newly Synthesized Analogues of Cyclophosphamide -- 6 Concluding Remarks -- Chapter 9 Nucleotides and Nucleic Acids -- 1 Introduction -- 2 Mononucleotides -- Chemical Synthesis -- Cyclic Nucleotides -- Affinity Chromatography -- 3 Nucleoside Polyphosphates -- Chemical Synthesis -- Affinity Labelling -- 4 Oligo- and Poly-nucleotides -- Chemical Synthesis -- Enzymatic Synthesis -- Sequencing -- Other Studies -- 5 Analytical Techniques and Physical Methods -- Chapter 10 Ylides and Related Compounds -- 1 Methylenephosphoranes -- Preparation and Structure -- Reactions -- Aldehydes -- Ketones -- Miscellaneous -- 2 Reactions of Phosphonate Anions -- 3 Selected Applications in Synthesis -- Pheromones -- Prostaglandins -- Carbohydrates -- Carotenoids and Related Compounds -- β-Lactam Antibiotics. , Non-benzenoid Aromatic Compounds -- Miscellaneous Applications -- Chapter 11 Physical Methods -- 1 Nuclear Magnetic Resonance Spectroscopy -- Biological Applications and Instrumental Techniques -- Chemical Shifts and Shielding Effects -- Phosphorus-31 -- δP of n2 compounds -- δP of n3 compounds -- δP of n4 compounds -- δP of n6 compounds -- Carbon-13 -- Nitrogen-15 -- Chlorine-35 -- Studies of Equilibria, Shift Reagents, and Liquid Crystals -- Variable-temperature Studies -- Pseudorotation -- Restricted Rotation -- Studies of Configuration -- Spin-Spin Coupling -- J(PP) and J(PM) -- J(PC) -- J(PH) -- J(PCnH) and J(PXCnH) -- Studies of Relaxation, CIDNP, and N.Q.R. -- 2 Electron Spin Resonance Spectroscopy -- 3 Vibrational and Rotational Spectroscopy -- Band Assignments and Absorptivity -- Bonding -- Stereochemistry -- Rotational Data -- 4 Electronic Spectroscopy -- Absorption Spectroscopy -- Photoelectron Spectroscopy -- X-Ray Fluorescence Spectroscopy -- 5 Diffraction -- X-Ray Diffraction -- Electron Diffraction -- 6 Dipole Moments and the Kerr Effect -- 7 Mass Spectrometry -- 8 pKa and Thermochemical and Kinetic Studies -- 9 Chromatography -- Gas-Liquid Chromatography -- Thin-layer Chromatography and Paper Chromatography -- High-performance Liquid Chromatography -- Column Chromatography -- Author Index.
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  • 4
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Organophosphorus compounds - Periodicals. ; Electronic books.
    Description / Table of Contents: A concise but comprehensive annual survey of a vast field of study enabling the reader to rapidly keep abreast of the latest developments in this specialist area.
    Type of Medium: Online Resource
    Pages: 1 online resource (363 pages)
    Edition: 1st ed.
    ISBN: 9781847554345
    Series Statement: Issn Series
    DDC: 547.07 21
    Language: English
    Note: Organophosphorus Chemistry -- Contents -- Chapter 1 Phosphines and Phosphonium Salts -- 1 Phosphines -- Preparation -- From Halogenophosphines and Organometallic Reagents -- From Metallated Phosphines -- By Addition of P-H to Unsaturated Compounds -- By Reduction -- Miscellaneous Methods -- Reactions -- Nucleophilic Attack at Carbon -- Nucleophilic Attack at Halogen -- Nucleophilic Attack at Other Atoms -- Miscellaneous Reactions -- 2 Phosphonium Salts -- Preparation -- Reactions -- Alkaline Hydrolysis -- Additions to Unsaturated Phosphonium Salts -- Miscellaneous Reactions -- 3 pπ-Bonded Phosphorus Compounds -- 4 Phospholes and Phosphorins -- Chapter 2 Quinquecovalent Phosphorus Compounds -- 1 Introduction -- 2 Structure, Bonding, and Reorganization of Ligands -- 3 Phosphoranes that contain a P-H Bond -- 4 Acyclic Phosphoranes -- 5 Four-membered-ring Phosphoranes -- 6 Five-membered-ring Phosphoranes -- 7 Six- and Seven-membered-ring Phosphoranes -- 8 Hexaco-ordinated Phosphorus Compounds -- Chapter 3 Halogenophosphines and Related Compounds -- 1 Introduction -- 2 Halogenophosphines -- Preparation -- Physical and Structural Aspects -- Reactions that lead to pπ Bonds to Phosphorus -- Reactions with Alkenes or Dienes -- Reactions with Carbanions -- Reactions with Carbonyl Compounds -- Reactions with Oxygen Nucleophiles -- Reactions with Phosphorus Nucleophiles -- Miscellaneous Reactions -- 3 Silylphosphines -- 4 Halogenophosphoranes -- Preparation -- Physical and Structural Aspects -- Reactions -- Chapter 4 Phosphine Oxides and Related Compounds -- 1 Introduction -- 2 Preparation of Acyclic Oxides -- 3 Preparation of Cyclic Oxides -- 4 Structural and Physical Aspects -- 5 Reactions at Phosphorus -- 6 Reactions of the Side-Chain -- 7 Phosphine Oxide Complexes and Extractants -- Chapter 5 Tervalent Phosphorus Acids -- 1 Introduction. , 2 Phosphorous Acid and its Derivatives -- Nucleophilic Reactions -- Attack on Saturated Carbon -- Attack on Unsaturated Carbon -- Attack on Oxygen -- Attack on Halogen -- Electrophilic Reactions -- Reactions involving Two- co-ordinate Phosphorus -- Cyclic Esters of Phosphorous Acid -- Miscellaneous Reactions -- 3 Phosphonous and Phosphinous Acids and their Derivatives -- Chapter 6 Quinquevalent Phosphorus Acids -- 1 Synthesis -- General -- Phosphoric Acid and its Derivatives -- Phosphonic and Phosphinic Acids and their Derivatives -- 2 Reactions -- General -- Phosphoric Acid and its Derivatives -- Phosphonic and Phosphinic Acids and their Derivatives -- Chapter 7 Phosphates and Phosphonates of Biochemical Interest -- 1 Introduction -- 2 Coenzymes and Cofactors -- 3 Sugar Phosphates -- 4 Phospholipids -- 5 Phosphonates -- 6 Enzyme Mechanisms -- 7 Other Compounds of Biochemical Interest -- Chapter 8 Nucleotides and Nucleic Acids -- 1 Introduction -- 2 Mononucleotides -- Chemical Synthesis -- Cyclic Nucleotides -- Affinity Chromatography -- 3 Nucleoside Polyphosphates -- Chemical Synthesis -- Affinity Labelling -- 4 Oligo- and Poly-nucleotides -- Chemical Synthesis -- Enzymatic Synthesis -- Sequencing -- Other Studies -- 5 Analytical Techniques and Physical Methods -- Chapter 9 Ylides and Related Compounds -- 1 Introduction -- 2 Methylenephosphoranes -- Preparation and Structure -- Reactions -- Aldehydes -- Ketones -- Miscellaneous -- 3 Reactions of Phosphonate Anions -- 4 Selected Applications in Synthesis -- Carbohydrates -- Carotenoids and Related Compounds -- β-Lactam Antibiotics -- Leucotrienes and Related Compounds -- Pheromones -- Prostaglandins -- Miscellaneous Applications -- Chapter 10 Mass Spectrometry of Organophosphorus Compounds -- 1 Introduction -- 2 Techniques -- Chemical Ionization and 'In-Beam' Evaporation Techniques. , Negative-ion Chemical Ionization -- Field Desorption and lonization by Energetic Particles -- Identification of Metastable Ions -- Liquid Chromatography -- 3 Natural Products -- Nucleotides -- Phospholipids -- Miscellaneous Natural Phosphates -- 4 Synthetic Compounds -- Organophosphorus Ester Pesticides -- Phosphates -- Phosphonates -- Phosphites -- Phosphinates -- Phosphines -- Phosphonium Salts -- Phosphazenes -- Miscellaneous -- Chapter 11 Physical Methods -- 1 Nuclear Magnetic Resonance Spectroscopy -- Biological, Analytical, and Instrumental Aspects -- Chemical Shifts and Shielding Effects -- Phosphorus-31 -- δp of n1 compounds -- δp of n2 compounds -- δp of n3 compounds -- δp of n4 compounds -- δp of n5 compounds -- Hydrogen-1, -2, and -3 -- Carbon-13 -- Oxygen-17 -- Fluorine-19 -- Studies of Equilibria, Hydrogen-Bonding, and Shift Reagents -- Variable-Temperature Studies: Inversion -- Restricted Rotation and Conformation -- Pseudorotation -- Spin-Spin Couplings -- J(PM) and J(PP) -- J(PF) -- J(PN) -- J(PC) -- 1J(PD) -- 2J(PCH) -- J(PCCnH) and J(POCnH) -- Relaxation, CIDNP, and N.Q.R. -- Relaxation -- CIDNP -- N.Q.R. -- 2 Electron Spin Resonance Spectroscopy -- 3 Vibrational and Rotational Spectroscopy -- Band Assignments and Absorptivity -- Bonding -- Stereochemistry -- Rotational Data -- 4 Electronic Spectroscopy -- Absorption Spectroscopy -- Photoelectron Spectroscopy -- Optical Rotation -- 5 Diffraction -- X-Ray Diffraction -- Electron Diffraction -- 6 Dipole Moments and Kerr Effects -- 7 Values of pKa and Thermochemical and Kinetic Studies -- 8 Chromatography and Surface Properties -- Gas-Liquid Chromatography -- Thin-Layer, Paper, and Gel Chromatographies -- High-Performance Liquid Chromatography -- Column Chromatography -- Surface Properties -- Author Index.
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  • 5
    Online Resource
    Online Resource
    La Vergne :Royal Society of Chemistry, The,
    Keywords: Organophosphorus compounds - Periodicals. ; Electronic books.
    Description / Table of Contents: A concise but comprehensive annual survey of a vast field of study enabling the reader to rapidly keep abreast of the latest developments in this specialist area.
    Type of Medium: Online Resource
    Pages: 1 online resource (290 pages)
    Edition: 1st ed.
    ISBN: 9781847554321
    Series Statement: Issn Series
    DDC: 547.07 21
    Language: English
    Note: Organophosphorus Chemistry -- Contents -- Chapter 1 Phosphines and Phosphonium Salts -- 1 Phosphines -- Preparation -- From Halogenophosphines and Organometallic Reagents -- From Metallated Phosphines -- By Addition of P-H to Unsaturated Compounds -- By Reduction -- Miscellaneous Methods -- Reactions -- Nucleophilic Attack at Carbon -- Nucleophilic Attack at Halogen -- Nucleophilic Attack at Other Atoms -- Miscellaneous -- 2 Phosphonium Salts -- Preparation -- Reactions -- Alkaline Hydrolysis -- Additions to Unsaturated Phosphonium Salts -- Miscellaneous -- 3 Phospholes and Phosphorins -- Chapter 2 Quinquecovalent Phosphorus Compounds -- 1 Introduction -- 2 Structure and Bonding -- 3 Hydroxyphosphoranes -- 4 PH-Phosphoranes -- 5 Acyclic Phosphoranes -- 6 Four-membered Phosphoranes -- 7 Five-membered Phosphoranes -- 8 Six-membered Phosphoranes -- 9 Six-co-ordinate Species -- Chapter 3 Halogenophosphines and Related Compounds -- 1 Introduction -- 2 Halogenophosphines -- Preparation -- Physical and Structural Properties -- Reactions with Alkenes or Alkynes -- Reactions with Amines and Derivatives -- Reactions with Carbonyl Compounds -- Reactions with Acetals and Alcohols -- Reactions with Phosphorus(III) Compounds -- Miscellaneous Reactions -- 3 Silylphosphines -- 4 Halogenophosphoranes -- Preparation -- Physical and Structural Aspects -- Reactions -- Reactions that are Relevant to Organic Synthesis -- Chapter 4 Phosphine Oxides and Related Compounds -- 1 Introduction -- 2 Preparation of Simple Oxides -- 3 Preparations and Reactions Related to Alkene Synthesis -- 4 Reactions and Properties involving the P=O Group -- 5 Reactions of the Side-chain -- 6 Chemistry of Cyclic Phosphine Oxides -- 7 Miscellaneous Structural and Physical Aspects -- Chapter 5 Tervalent Phosphorus Acids -- 1 Phosphorous Acid and its Derivatives -- Nucleophilic Reactions. , Attack on Saturated Carbon -- Attack on Unsaturated Carbon -- Attack on Nitrogen -- Attack on Oxygen -- Attack on Halogen -- Electrophilic Reactions -- Cyclic Esters of Phosphorous Acid -- Miscellaneous Reactions -- 2 Phosphonous and Phosphinous Acids and their Derivatives -- Chapter 6 Quinquevalent Phosphorus Acids -- 1 Synthetic Methods -- General -- Phosphoric Acid and its Derivatives -- Phosphonic and Phosphinic Acids and their Derivatives -- 2 Reactions -- General -- Phosphoric Acid and its Derivatives -- Phosphonic and Phosphinic Acids and their Derivatives -- Chapter 7 Phosphates and Phosphonates of Biochemical Interest -- 1 lntroduction -- 2 Coenzymes and Cofactors -- Nicotinamide Coenzymes -- Phosphoenolpyruvate -- Pyridoxal Phosphate -- Other Coenzymes -- 3 Sugar Derivatives -- 4 Phospholipids -- 5 Phosphonates -- 6 Enzymology -- Enzyme Mechanisms -- Phosphoproteins -- 7 Other Compounds of Biochemical Interest -- Chapter 8 Phosphoryl Transfer from Phosphomonoesters and Adenosine 5′-Triphosphate -- 1 Types of Phosphoryl Transfer -- 2 Phosphoryl Transfer from Aryl Dihydrogen Phosphates -- 3 Does PO3- Add to Non-enolized Ketones in Solution? -- 4 Mechanims of Non-enzymatic Phosphoryl Transfer from ATP -- 5 Enzymatic Hydrolysis of ATP : Actomyosin MgATPase in Muscle Contraction -- Chapter 9 Nucleotides and Nucleic Acids -- 1 Introduction -- 2 Mononucleotides -- Chemical Synthesis -- Cyclic Nucleotides -- Affinity Chromatography -- 3 Nucleoside Polyphosphates -- Chemical Synthesis -- Affinity Labelling -- 4 Oligo- and Poly-nucleotides -- Chemical Synthesis -- Enzymatic Synthesis -- Sequencing -- Other Studies -- 5 Analytical Techniques and Physical Methods -- Chapter 10 Ylides and Related Compounds -- 1 Methylenephosphoranes -- Preparation and Structure -- Reactions -- Aldehydes -- Ketones -- Miscellaneous -- 2 Reactions of Phosphonate Anions. , 3 Selected Applications in Synthesis -- Pheromones -- Prostaglandins -- Carbohydrates -- Carotenoids -- Non-benzenoid Aromatic Compounds -- Miscellaneous -- Chapter 11 Physical Methods -- 1 Nuclear Magnetic Resonance Spectroscopy -- Biological and Analytical Applications -- Chemical Shifts and Shielding Effects -- Phosphorus-31 -- δP of PII compounds -- δp of PIII and PIV compounds -- δp of PV and PVI compounds -- Carbon-13 -- Hydrogen-1 -- Equilibria, Shift Reagents, and Liquids Crystals -- Variable-temperature Studies -- Pseudorotation and Restricted Rotation -- Other Studies -- Configuration -- Spin-Spin Coupling -- JPP and JPM -- JPF and JPN -- JPC -- JPH -- JPCnH -- Relaxation and N.Q.R. Studies -- 2 Electron Spin Resonance Spectroscopy -- 3 Vibrational and Rotational Spectroscopy -- Band Assignments -- Stereochemistry -- Bonding -- Microwave Spectra -- 4 Electronic Spectroscopy -- Absorption -- Photoelectron -- 5 Diffraction -- X-Ray -- Electron and Neutron -- 6 Dipole Moments, Kerr Effect, and Polarography -- Dipole Moments and Kerr Effect -- Polarographic Studies -- 7 Mass Spectrometry -- 8 pKa, Thermochemical, and Kinetic Studies -- 9 Chromatography -- G.l.c. -- T.l.c. -- H.p.l.c. -- Column and Gel Chromatography -- Author Index.
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  • 6
    Online Resource
    Online Resource
    La Vergne :RSC,
    Keywords: Electronic books.
    Description / Table of Contents: A concise but comprehensive annual survey of a vast field of study enabling the reader to rapidly keep abreast of the latest developments in this specialist area.
    Type of Medium: Online Resource
    Pages: 1 online resource (290 pages)
    Edition: 1st ed.
    ISBN: 9781847554321
    Series Statement: ISSN Series
    Language: English
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  • 7
    Online Resource
    Online Resource
    La Vergne :RSC,
    Keywords: Electronic books.
    Description / Table of Contents: A concise but comprehensive annual survey of a vast field of study enabling the reader to rapidly keep abreast of the latest developments in this specialist area.
    Type of Medium: Online Resource
    Pages: 1 online resource (311 pages)
    Edition: 1st ed.
    ISBN: 9781847554338
    Series Statement: ISSN Series
    Language: English
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 1949-1954 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial Ge films have been deposited on Si and Ge substrates at 300 °C using electron-cyclotron-resonance plasma-assisted chemical vapor deposition. Helium was fed into the resonance chamber, and a mixture of helium and germane were fed downstream at a location above the substrate. Surface roughness increased with energetic ion bombardment as quantified by the number of ions striking the surface per Ge atom deposited. Surface roughness also increased with increasing substrate temperature. Films with very rough surface morphology were found to be polycrystalline. The large hydrogen content of the films, particularly those deposited on Si, appeared to prevent the reduction of the epitaxial temperature below 300 °C. In the temperature range between 300 and 325 °C, hydrogen bubbles formed at the Ge/Si interface and caused the films to pucker from the surface. Increasing the substrate temperature above 325 °C eliminated this problem by decreasing the surface coverage of hydrogen during deposition.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1525-1314
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: Granulite facies rocks from the northernmost Harts Range Complex (Arunta Inlier, central Australia) have previously been interpreted as recording a single clockwise cycle of presumed Palaeoproterozoic metamorphism (800–875 °C and 〉9–10 kbar) and subsequent decompression in a kilometre-scale, E-W striking zone of noncoaxial, high-grade (c. 700–735 °C and 5.8–6.4 kbar) deformation. However, new SHRIMP U-Pb age determinations of zircon, monazite and titanite from partially melted metabasites and metapelites indicate that granulite facies metamorphism occurred not in the Proterozoic, but in the Ordovician (c. 470 Ma).The youngest metamorphic zircon overgrowths from two metabasites (probably meta-volcaniclastics) yield 206Pb/238U ages of 478±4 Ma and 471±7 Ma, whereas those from two metapelites yield ages of 463±5 Ma and 461±4 Ma. Monazite from the two metapelites gave ages equal within error to those from metamorphic zircon rims in the same rock (457±5 Ma and 462±5 Ma, respectively). Zircon, and possibly monazite ages are interpreted as dating precipitation of these minerals from crystallizing melt within leucosomes. In contrast, titanite from the two metabasites yield 206Pb/238U ages that are much younger (411±5 Ma & 417±7 Ma, respectively) than those of coexisting zircon, which might indicate that the terrane cooled slowly following final melt crystallization. One metabasite has a second titanite population with an age of 384±7 Ma, which reflects titanite growth and/or recrystallization during the 400–300 Ma Alice Springs Orogeny. The c. 380 Ma titanite age is indistinguishable from the age of magmatic zircon from a small, late and weakly deformed plug of biotite granite that intruded the granulites at 387±4 Ma. These data suggest that the northern Harts Range has been subject to at least two periods of reworking (475–460 Ma & 400–300 Ma) during the Palaeozoic.Detrital zircon from the metapelites and metabasites, and inherited zircon from the granite, yield similar ranges of Proterozoic ages, with distinct age clusters at c. 1300–1000 and c. 650 Ma. These data imply that the deposition ages of the protoliths to the Harts Range Complex are late Neoproterozoic or early Palaeozoic, not Palaeoproterozoic as previously assumed.
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  • 10
    ISSN: 1525-1314
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The Mallee Bore area in the northern Harts Range of central Australia underwent high-temperature, medium-to high-pressure granulite facies metamorphism. Individual geothermometers and geobarometers and average P-T calculations using the program Thermocalc suggest that peak metamorphic conditions were 705–810C and 8–12 kbar. Partial melting of both metasedimentary and meta-igneous rocks, forming garnet-bearing restites, occurred under peak metamorphic conditions. Comparison with partial melting experiments suggests that vapour-absent melting in metabasic and metapelitic rocks with compositions close to those of rocks in the Mallee Bore area occurs at 800–875C and 〉9–10 kbar. The lower temperatures obtained from geothermometry imply that mineral compositions were reset during cooling. Following the metamorphic peak, the rocks underwent local mylonitization at 680–730C and 5.8–7.7 kbar. After mylonitization ceased, garnet retrogressed locally to biotite, which was probably caused by fluids exsolving from crystallizing melts. These three events are interpreted as different stages of a single, continuous, clockwise P-T path. The metamorphism at Mallee Bore probably occurred during the 1745–1730 Ma Late Strangways Orogeny, and the area escaped significant crustal reworking during the Anmatjira and Alice Springs events that locally reached amphibolite facies conditions elsewhere in the Harts Ranges.
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