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  • 1
    Description / Table of Contents: This volume focuses on Late Mesoproterozoic to early Cambrian events related to Gondwana assembly and break up. The nineteen papers provide a comprehensive review including advanced knowledge and new data from all critical areas of East Gondwana. The recent knowledge of the evolution of East Gondwana, which was regarded as an integral part of the Mesoproterozoic supercontinent Rodinia, is the major theme of the volume, which is reinforced by highlighting this radical and new understanding of the evolution of this region. This volume is of use as both a text and reference book for Earth Science postgraduates, and should appeal worldwide to professional geologists with an interest in Rodinia, Gondwana and that important transition from the Proterozoic to the Phanerozoic Earth.
    Pages: Online-Ressource (VII, 472 Seiten)
    ISBN: 1862391254
    Language: English
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  • 2
    Keywords: Manganerz ; Manganerzlagerstätte ; Mineralisation ; Geochemistry ; Geoquímica ; Manganese nodules ; Manganese ores ; Manganês ; Mineralogia
    Description / Table of Contents: Introduction --- Keith Nicholson, James R. Hein, Bernhard Bühn, and Somnath Dasgupta: Precambrian to modern manganese mineralization: Changes in ore type and depositional environment / Geological Society, London, Special Publications, 119:1-3, doi:10.1144/GSL.SP.1997.119.01.01 --- Review --- Supriya Roy: Genetic diversity of manganese deposition in the terrestrial geological record / Geological Society, London, Special Publications, 119:5-27, doi:10.1144/GSL.SP.1997.119.01.02 --- Precambrian Deposits --- G.P. Glasby: Fractionation of manganese from iron in Archaean and Proterozoic sedimentary ores / Geological Society, London, Special Publications, 119:29-42, doi:10.1144/GSL.SP.1997.119.01.03 --- Dmitri A. Kulik and Michael N. Korzhnev: Lithological and geochemical evidence of Fe and Mn pathways during deposition of Lower Proterozoic banded iron formation in the Krivoy Rog Basin (Ukraine) / Geological Society, London, Special Publications, 119:43-80, doi:10.1144/GSL.SP.1997.119.01.04 --- Bernhard Bühn and Ian G. Stanistreet: Insight into the enigma of Neoproterozoic manganese and iron formations from the perspective of supercontinental break-up and glaciation / Geological Society, London, Special Publications, 119:81-90, doi:10.1144/GSL.SP.1997.119.01.05 --- C. Manikyamba and S.M. Naqvi: Mineralogy and geochemistry of Archaean greenstone belt-hosted Mn formations and deposits of the Dharwar Craton: Redox potential of proto-oceans / Geological Society, London, Special Publications, 119:91-103, doi:10.1144/GSL.SP.1997.119.01.06 --- Joydip Mukhopadhyay, Asru K. Chaudhuri, and S. K. Chanda: Deep-water manganese deposits in the mid- to late Proterozoic Penganga Group of the Pranhita-Godavari Valley, South India / Geological Society, London, Special Publications, 119:105-115, doi:10.1144/GSL.SP.1997.119.01.07 --- Keith Nicholson, V. K. Nayak, and J. K. Nanda: Manganese ores of the Ghoriajhor-Monmunda area, Sundergarh District, Orissa, India: geochemical evidence for a mixed Mn source / Geological Society, London, Special Publications, 119:117-121, doi:10.1144/GSL.SP.1997.119.01.08 --- Cenozoic Deposits --- James R. Hein, Andrea Koschinsky, Peter Halbach, Frank T. Manheim, Michael Bau, Jung-Keuk Kang, and Naomi Lubick: Iron and manganese oxide mineralization in the Pacific / Geological Society, London, Special Publications, 119:123-138, doi:10.1144/GSL.SP.1997.119.01.09 --- D. S. Cronan: Some controls on the geochemical variability of manganese nodules with particular reference to the tropical South Pacific / Geological Society, London, Special Publications, 119:139-151, doi:10.1144/GSL.SP.1997.119.01.10 --- U. Von Stackelberg: Growth history of manganese nodules and crusts of the Peru Basin / Geological Society, London, Special Publications, 119:153-176, doi:10.1144/GSL.SP.1997.119.01.11 --- Akira Usui and Masao Someya: Distribution and composition of marine hydrogenetic and hydrothermal manganese deposits in the northwest Pacific / Geological Society, London, Special Publications, 119:177-198, doi:10.1144/GSL.SP.1997.119.01.12 --- B. Nagender Nath, W. L. Plüger, and I. Roelandts: Geochemical constraints on the hydrothermal origin of ferromanganese encrustations from the Rodriguez Triple Junction, Indian Ocean / Geological Society, London, Special Publications, 119:199-211, doi:10.1144/GSL.SP.1997.119.01.13 --- G. P. Glasby, E. M. Emelyanov, V. A. Zhamoida, G. N. Baturin, T. Leipe, R. Bahlo, and P. Bonacker: Environments of formation of ferromanganese concretions in the Baltic Sea: a critical review / Geological Society, London, Special Publications, 119:213-237, doi:10.1144/GSL.SP.1997.119.01.14 --- J. Rey, L. Somoza, J. Martínez-Frías, R. Benito, and S. Martín-Alfageme: Deception Island (Antarctica): a new target for exploration of Fe-Mn mineralization? / Geological Society, London, Special Publications, 119:239-251, doi:10.1144/GSL.SP.1997.119.01.15 --- A. Crespo and R. Lunar: Terrestrial hot-spring Co-rich Mn mineralization in the Pliocene-Quaternary Calatrava Region (central Spain) / Geological Society, London, Special Publications, 119:253-264, doi:10.1144/GSL.SP.1997.119.01.16 --- K. M. Michailidis, K. Nicholson, M. K. Nimfopoulos, and R. A. D. Pattrick: An EPMA and SEM study of the Mn-oxide mineralization of Kato Nevrokopi, Macedonia, northern Greece: Controls on formation of the Mn4+ oxides / Geological Society, London, Special Publications, 119:265-280, doi:10.1144/GSL.SP.1997.119.01.17 --- Hiroyuki Miura and Yu Hariya: Recent manganese oxide deposits in Hokkaido, Japan / Geological Society, London, Special Publications, 119:281-299, doi:10.1144/GSL.SP.1997.119.01.18 --- Geochemistry and Mineralogy --- Lev M. Gramm-Osipov: Formation of solid phases of manganese in oxygenated aquatic environments / Geological Society, London, Special Publications, 119:301-308, doi:10.1144/GSL.SP.1997.119.01.19 --- Keith Nicholson and Mark Eley: Geochemistry of manganese oxides: metal adsorption in freshwater and marine environments / Geological Society, London, Special Publications, 119:309-326, doi:10.1144/GSL.SP.1997.119.01.20 --- Somnath Dasgupta: P-T-X relationships during metamorphism of manganese-rich sediments: Current status and future studies / Geological Society, London, Special Publications, 119:327-337, doi:10.1144/GSL.SP.1997.119.01.21 --- M. K. Nimfopoulos, K. M. Michailidis, and G. Christofides: Zincian rancieite from the Kato Nevrokopi manganese deposits, Macedonia, northern Greece / Geological Society, London, Special Publications, 119:339-347, doi:10.1144/GSL.SP.1997.119.01.22 --- S. D. Gamblin and D. S. Urch: The determination of the valency of manganese in mineralogical and environmental samples by X-ray emission spectroscopy / Geological Society, London, Special Publications, 119:349-356, doi:10.1144/GSL.SP.1997.119.01.23
    Pages: Online-Ressource (VI, 370 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 1897799748
    Language: English
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  • 3
    Keywords: Antarctica ; India ; supercontinent
    Description / Table of Contents: An introduction to the crustal evolution of India and Antarctica: the supercontinent connection / N. C. Pant and S. Dasgupta / Geological Society, London, Special Publications, 457, 1-6, 22 August 2017, https://doi.org/10.1144/SP457.14 --- Antarctica --- Refined geological history of the polyphase plutonometamorphic complex in the Thala Hills area (Enderby Land, East Antarctica) from zircon SHRIMP dating and implications for Neoproterozoic amalgamation of Gondwanaland / Evgeniy Mikhalsky, Dmitry Krylov, Nickolay Rodionov, Sergey Presnyakov, Sergey Skublov and Oleg Myasnikov / Geological Society, London, Special Publications, 457, 7-36, 13 April 2017, https://doi.org/10.1144/SP457.2 --- Geological studies in the Baalsrudfjellet nunatak between the Schirmacher Oasis and the Wohlthat Mountains to establish the continuation of the East African Orogen (EAO) in central Dronning Maud Land, East Antarctica / S. K. Roy, N. C. Pant, A. Kundu, A. Dharwadkar, P. K. Kumar, Sonalika Joshi, Raghuram, Mohd. Sadiq and Mayuri Pandey / Geological Society, London, Special Publications, 457, 37-59, 13 April 2017, https://doi.org/10.1144/SP457.3 --- The geology and geochemistry of the Straumsnutane Formation, Straumsnutane, western Dronning Maud Land, Antarctica and its tectonic setting on the western margin of the Kalahari Craton: additional evidence linking it to the Umkondo Large Igneous Province / Neo G. Moabi, Geoffrey H. Grantham, James Roberts and Petrus Le Roux / Geological Society, London, Special Publications, 457, 61-85, 13 April 2017, https://doi.org/10.1144/SP457.4 --- India --- Eastern Ghats Mobile Belt --- The Eastern Ghats Belt, India, in the context of supercontinent assembly / Somnath Dasgupta, Sankar Bose, Santanu Kumar Bhowmik and Pulak Sengupta / Geological Society, London, Special Publications, 457, 87-104, 13 April 2017, https://doi.org/10.1144/SP457.5 --- Zircon U–Pb SHRIMP and monazite EPMA U–Th–total Pb geochronology of granulites of the western boundary, Eastern Ghats Belt, India: a new possibility for Neoproterozoic exhumation history / A. Chatterjee, K. Das, S. Bose, P. Ganguly and H. Hidaka / Geological Society, London, Special Publications, 457, 105-140, 13 April 2017, https://doi.org/10.1144/SP457.1 --- Reaction textures, pressure–temperature paths and chemical dates of monazite from a new suite of sapphirine–spinel granulites from parts of the Eastern Ghats Province, India: insights into the final amalgamation of India and East Antarctica during the formation of Rodinia / Enakshi Das, Subrata Karmakar, Anindita Dey, Shreya Karmakar and Pulak Sengupta / Geological Society, London, Special Publications, 457, 141-170, 8 May 2017, https://doi.org/10.1144/SP457.12 --- The Rauer–Rengali connection in the Indo-Antarctica amalgam: evidence from structure, metamorphism and geochronology / Amol Dayanand Sawant, Saibal Gupta, Chris Clark and Surajit Misra / Geological Society, London, Special Publications, 457, 171-196, 8 May 2017, https://doi.org/10.1144/SP457.9 --- Chotanagpur Granite Gneiss Craton --- Petrology and U–Pb geochronology of zircon in a suite of charnockitic gneisses from parts of the Chotanagpur Granite Gneiss Complex (CGGC): evidence for the reworking of a Mesoproterozoic basement during the formation of the Rodinia supercontinent / Subham Mukherjee, Anindita Dey, Sanjoy Sanyal, Mauricio Ibanez-Mejia, Upama Dutta and Pulak Sengupta / Geological Society, London, Special Publications, 457, 197-231, 13 April 2017, https://doi.org/10.1144/SP457.6 --- Geochemical and U–Pb zircon age characterization of granites of the Bathani Volcano Sedimentary sequence, Chotanagpur Granite Gneiss Complex, eastern India: vestiges of the Nuna supercontinent in the Central Indian Tectonic Zone / Ashima Saikia, Bibhuti Gogoi, Tatiana Kaulina, Liudmila Lialina, Tamara Bayanova and Mansoor Ahmad / Geological Society, London, Special Publications, 457, 233-252, 8 May 2017, https://doi.org/10.1144/SP457.11 --- Geochemistry and U–Pb SHRIMP zircon geochronology of microgranular enclaves and host granitoids from the South Khasi Hills of the Meghalaya Plateau, NE India: evidence of synchronous mafic–felsic magma mixing–fractionation and diffusion in a post-collision tectonic environment during the Pan-African orogenic cycle / Santosh Kumar, Thepfuvilie Pieru, Vikoleno Rino and Yasutaka Hayasaka / Geological Society, London, Special Publications, 457, 253-289, 8 May 2017, https://doi.org/10.1144/SP457.10 --- Western Indian Craton --- Meso-Neoproterozoic mid-crustal metamorphic record from the Ajmer–Shrinagar section, Rajasthan, India and its implication to the assembly of the Greater Indian Landmass during the Grenvillian-age orogenesis / Sankar Bose, Pritha Seth and Nilanjan Dasgupta / Geological Society, London, Special Publications, 457, 291-318, 13 April 2017, https://doi.org/10.1144/SP457.7 --- Inferring a Neoproterozoic orogeny preceding the Rodinia break-up in the Sirohi Group, NW India / Devsamridhi Arora, Naresh C. Pant, Fareeduddin, Surbhi Sharma, Raghuram and Mohd. Sadiq / Geological Society, London, Special Publications, 457, 319-338, 8 May 2017, https://doi.org/10.1144/SP457.8 --- India and Antarctica --- India and Antarctica in the Precambrian: a brief analysis / Joseph G. Meert, Manoj K. Pandit, Anthony Pivarunas, Karastin Katusin and Anup K. Sinha / Geological Society, London, Special Publications, 457, 339-351, 19 June 2017, https://doi.org/10.1144/SP457.13
    Pages: Online-Ressource (VI, 359 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9781786203199
    Language: English
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  • 4
    Call number: 9/M 07.0421(457)
    In: Geological Society Special Publication
    Type of Medium: Monograph available for loan
    Pages: 359 Seiten , Illustrationen
    ISBN: 978-1-78620-319-9
    Series Statement: Geological Society Special Publication 457
    Location: Reading room
    Branch Library: GFZ Library
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  • 5
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Pelitic rocks were thermally metamorphosed at the contact of the Chimakurthy mafic-ultramafic igneous complex, Eastern Ghats Belt, India. The rocks show progressive change in mineralogy from biotite-sillimanite-quartz-garnet-K-feldspar (association I, 150 m from the intrusive contact) to garnet-spinel-cordierite-K-feldspar-sillimanite (association II, 20–30 m from the intrusive contact) to cordierite-K-feldspar-(cordierite-orthopyroxene-K-feldspar symplectite after osumilite)-spinel-FeTiAl oxides with/without garnet (associations III and IV, 5 m from the intrusive contact), and finally to spinel-orthopyroxene-cordierite-K-feldspar (association V, xenoliths). Oxide mineral clots in associations III and IV resemble emery-type rocks. Initial mineral reactions involved biotite-dehydration melting with partial segregation of the melt. Down-temperature mineral reactions were largely diffusion controlled and preservation of symplectitic and coronitic textures in microdomains is common. Interpretation of reaction textures in relevant petrogenetic grids for the sytems KFMASH and FMAS and combined with geothermobarometry suggest that the pelitic rocks were thermally metamorphosed at c. 6 kbar pressure along a heating-cooling trajectory within the temperature interval between c. 750 °C and c. 1000 °C.
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  • 6
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract In the metamorphosed manganese oxide ores of India, braunite is ubiquitous in all assemblages from chlorite to sillimanite grades. Chemical analyses of braunite from different prograde assemblages confirm the presence of a fixed R2+ (=Mn2++Mg+Ca) SiO3 molecule in the mineral. Element partitioning between coexisting braunite and bixbyite indicates a near-ideal mixing of Fe+3/ -Mn+3 in the phases. This also indicates that braunite became relatively ferrian while equilibrating with associated phases such as bixbyite, hollandite and jacobsite during prograde reactions. Petrogenetic studies show that as a general trend, prograde lower oxide phases appeared by deoxidation of higher oxide phases. But braunite, a more reduced phase than bixbyite, appeared early from deoxidation of pyrolusite in presence of quartz. Bixbyite could appear later from the reacting pyrolusite-braunite-quartz assemblage. Inferred mineral reaction paths and the general trend of pro-grade deoxidation reactions suggest that the composition of ambient fluid phase was internally buffered during metamorphism.
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  • 7
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract This paper aims to ascertain the degree of equilibrium attained with respect to oxygen during metamorphism of non-carbonatic manganiferous sediments and the nature of mobility of oxygen in rocks of adjacent beds by measuring the composition of coexisting phases. Through algebraic analysis of the relevant phase equilibria, a difference of ≃17 kcal in $$u_{{\text{O}}_{\text{2}} } $$ in rocks of adjacent beds is obtained. This confirms the immobile nature of oxygen during metamorphism of manganiferous sediments.
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  • 8
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Applications of the different formulations of garnet-clinopyroxene geothermometers to crustal granulites and particularly to metamorphosed manganese formations show a wide scatter of estimates. This is primarily related to the uncertainty associated with the formulation of the activity-composition relationship in garnet solid solution besides that in the clinopyroxene solid solution. The largest uncertainty appears to have resulted from the adopted Mg-Mn interaction parameter in garnet which is yet to be experimentally determined. A fresh statistical regression of eleven pairs of garnet and clinopyroxene equilibrated at identical P-T conditions from a manganese formation in India yields W Mg-Mn Gt (=WMn-Mg) value of 1600±500 cal/mols. An extension of the Ellis and Green (1979) geothermometer, known to work well in normal granulites, incorporating terms associated with the activity coefficients of the exchangeable cations, now yields consistent temperature estimation from normal granulites as well as from metamorphosed manganese formations. The geothermometer, however, will not work well for garnet having XFe≥0.65 and clinopyroxenes containing appreciable Na, Al and/or Fe3+.
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  • 9
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract A new formulation of garnet-biotite Fe−Mg exchange thermometer has been developed through statistical regression of the reversed experimental data of Ferry and Spear. Input parameters include available thermo-chemical data for quaternary Fe−Mg−Ca−Mn garnet solid solution and for excess free energy terms, associated with mixing of Al and Ti, in octahedral sites, in biotite solid solution. The regression indicates that Fe−Mg mixing in biotite approximates a symmetrical regular solution model showing positive deviation from ideality withW FeMg bi =1073±490 cal/mol. ΔH r and ΔS r for the garnet-biotite exchange equilibrium were derived to be 4301 cal and 1.85 cal respectively. The resultant thermometer gives consistent results for rocks with a much wider compositional range than can be accommodated by earlier formulations.
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  • 10
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Mn silicate-carbonate rocks at Parseoni occur as conformable lenses within metapelites and calc-silicate rocks of the Precambrian Sausar Group, India. The host rocks are estimated to have been metamorphosed at uppermost P-T conditions of 500–550°C and 3–4 kbar. The Mn-rich rocks contain appreciable Fe, reflected in the occurrence of magnetite(1) (MnO 1%), magnetite(2) (MnO 15%) and magnetite(3) (MnO 10%). Two contrasting associations of pyroxmangite, with and without tephroite, developed in the Mn silicate-carbonate rocks under isothermal-isobaric conditions. The former assemblage formed in relatively Fe-rich bulk compositions and equilibrated with a metamorphic fluid having a low X CO 2 (〈0.2), and the latter equilibrated with a CO2-rich fluid. Rhodochrosite+magnetite(1)+quartz protoliths produced the observed mineral assemblages on metamorphism. Partitioning of major elements between coexisting phases is somewhat variable. Fe shows preference for tephroite over pyroxmangite at the ambient physical conditions of metamorphism. Oxygen fugacity during metamorphism was monitored at or near the QFM buffer in tephroite bearing domains, and the fluid composition was buffered by mineral reactions in respective domains. As compared to other metamorphosed Mn deposits of the Sausar Group, the Mn silicate-carbonate rocks at Parseoni were, therefore, metamorphosed at much lower f O 2 through complex mineral-fluid interactions.
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