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Geochemistry and mineralization of proterozoic volcanic suites (1987)

Pharaoh, T. C.

Oxford [u.a.] : Blackwell

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Call number: 9/M 92.1245 ; M 93.0059/33

In: Geological Society special publication

Type of Medium: Monograph available for loan

Pages: X, 575 S. , Ill., zahlr. graph. Darst., Kt.

ISBN: 0632018062

Series Statement: Geological Society special publication 33

URL: http://sp.lyellcollection.org/content/33/1

Classification:

Petrology, Petrography

Language: English

Note: General Topics and Reviews --- S. R. Taylor: Geochemical and Petrological Significance of the Archaean-Proterozoic Boundary / Geological Society, London, Special Publications, 33:3-8, doi:10.1144/GSL.SP.1987.033.01.01 --- R. P. Hall, D. J. Hughes, C. R. L. Friend, and G. L. Snyder: Proterozoic Mantle Heterogeneity: Geochemical Evidence from Contrasting Basic Dykes / Geological Society, London, Special Publications, 33:9-21, doi:10.1144/GSL.SP.1987.033.01.02 --- D. Rickard: Proterozoic Volcanogenic Mineralization Styles / Geological Society, London, Special Publications, 33:23-35, doi:10.1144/GSL.SP.1987.033.01.03 --- Early Proterozoic Volcanic Suites of the Baltic Shield --- T. C. Pharaoh, A. Warren, and N. J. Walsh: Early Proterozoic Metavolcanic Suites of the Northernmost Part of the Baltic Shield / Geological Society, London, Special Publications, 33:41-58, doi:10.1144/GSL.SP.1987.033.01.04 --- M. Honkamo: Geochemistry and Tectonic Setting of Early Proterozoic Volcanic Rocks in Northern Ostrobothnia, Finland / Geological Society, London, Special Publications, 33:59-68, doi:10.1144/GSL.SP.1987.033.01.05 --- Waldo Vivallo and Lars-Åke Claesson: Intra-Arc Rifting and Massive Sulphide Mineralization in an Early Proterozoic Volcanic Arc, Skellefte District, Northern Sweden / Geological Society, London, Special Publications, 33:69-79, doi:10.1144/GSL.SP.1987.033.01.06 --- Joanna Parr and David Rickard: Early Proterozoic Subaerial Volcanism and Its Relationship to Broken Hill-type Mineralization in Central Sweden / Geological Society, London, Special Publications, 33:81-93, doi:10.1144/GSL.SP.1987.033.01.07 --- H. Colley and L. Westra: The Volcano-Tectonic Setting and Mineralization of the Early Proterozoic Kemiö-Orijärvi-Lohja Belt, SW Finland / Geological Society, London, Special Publications, 33:95-107, doi:10.1144/GSL.SP.1987.033.01.08 --- Early and Middle Proterozoic Volcanic Suites of the Laurentian and North Atlantic Shields --- W. R. A. Baragar and R. F. J. Scoates: Volcanic Geochemistry of the Northern Segments of the Circum-Superior Belt of the Canadian Shield / Geological Society, London, Special Publications, 33:113-131, doi:10.1144/GSL.SP.1987.033.01.09 --- N. T. Arndt, G. E. Brügmann, K. Lehnert, C. Chauvel, and B. W. Chappell: Geochemistry, Petrogenesis and Tectonic Environment of Circum-Superior Belt Basalts, Canada / Geological Society, London, Special Publications, 33:133-145, doi:10.1144/GSL.SP.1987.033.01.10 --- J. F. Lewry, R. MacDonald, C. Livesey, M. Meyer, R. Van Schmus, and M. E. Bickford: U-Pb Geochronology of Accreted Terranes in the Trans-Hudson Orogen, Northern Saskatchewan, Canada / Geological Society, London, Special Publications, 33:147-166, doi:10.1144/GSL.SP.1987.033.01.11 --- B. R. Watters and J. A. Pearce: Metavolcanic Rocks of the La Ronge Domain in the Churchill Province, Saskatchewan: Geochemical Evidence for a Volcanic Arc Origin / Geological Society, London, Special Publications, 33:167-182, doi:10.1144/GSL.SP.1987.033.01.12 --- J. W. Gaskarth and G. R. Parslow: Proterozoic Volcanism in the Flin Flon Greenstone Belt, East-Central Saskatchewan, Canada / Geological Society, London, Special Publications, 33:183-200, doi:10.1144/GSL.SP.1987.033.01.13 --- Charles F. Gower and Bruce Ryan: Two Stage Felsic Volcanism in the Lower Proterozoic Upper Aillik Group, Labrador, Canada: Its Relationship to Syn- and Post-Kinematic Plutonism / Geological Society, London, Special Publications, 33:201-210, doi:10.1144/GSL.SP.1987.033.01.14 --- K. C. Condie: Early Proterozoic Volcanic Regimes in Southwestern North America / Geological Society, London, Special Publications, 33:211-218, doi:10.1144/GSL.SP.1987.033.01.15 --- A. N. LeCheminant, A. R. Miller, and G. M. LeCheminant: Early Proterozoic Alkaline Igneous Rocks, District of Keewatin, Canada: Petrogenesis and Mineralization / Geological Society, London, Special Publications, 33:219-240, doi:10.1144/GSL.SP.1987.033.01.16 --- A. B. Ryan, W. R. A. Baragar, and D. J. Kontak: Geochemistry, Tectonic Setting, and Mineralization of High-Potassium Middle Proterozoic Rocks in Central Labrador, Canada / Geological Society, London, Special Publications, 33:241-254, doi:10.1144/GSL.SP.1987.033.01.17 --- Y. A. Johnson, R. G. Park, and J. A. Winchester: Geochemistry, Petrogenesis and Tectonic Significance of the Early Proterozoic Loch Maree Group Amphibolites of the Lewisian Complex, NW Scotland / Geological Society, London, Special Publications, 33:255-269, doi:10.1144/GSL.SP.1987.033.01.18 --- Proterozoic Volcanic Suites of the Guiana Shield --- A. K. Gibbs: Proterozoic Volcanic Rocks of the Northern Guiana Shield, South America / Geological Society, London, Special Publications, 33:275-288, doi:10.1144/GSL.SP.1987.033.01.19 --- R. Renner and A. K. Gibbs: Geochemistry and Petrology of Metavolcanic Rocks of the Early Proterozoic Mazaruni Greenstone Belt, Northern Guyana / Geological Society, London, Special Publications, 33:289-309, doi:10.1144/GSL.SP.1987.033.01.20 --- Proterozoic Volcanic Suites of Africa --- R. E. Myers, R. G. Cawthorn, T. S. McCarthy, and C. R. Anhaeusser: Fundamental Uniformity in the Trace Element Patterns of the Volcanics of the Kaapvaal Craton from 3000 to 2100 Ma: Evidence for the Lithospheric Origin of These Continental Tholeiites / Geological Society, London, Special Publications, 33:315-325, doi:10.1144/GSL.SP.1987.033.01.21 --- D. L. Reid, A. J. Erlank, H. J. Welke, and A. Moyes: The Orange River Group: a Major Proterozoic Calcalkaline Volcanic Belt in the Western Namaqua Province, Southern Africa / Geological Society, London, Special Publications, 33:327-346, doi:10.1144/GSL.SP.1987.033.01.22 --- G. Borg and K. J. Maiden: Alteration of Late Middle Proterozoic Volcanics and its Relation to Stratabound Copper-Silver-Gold Mineralization Along the Margin of the Kalahari Craton in Swa/Namibia and Botswana / Geological Society, London, Special Publications, 33:347-354, doi:10.1144/GSL.SP.1987.033.01.23 --- J. H. Breitkopf and K. J. Maiden: Geochemical Patterns of Metabasites in the Southern Part of the Damara Orogen, SWA/Namibia: Applicability to the Recognition of Tectonic Environment / Geological Society, London, Special Publications, 33:355-361, doi:10.1144/GSL.SP.1987.033.01.24 --- P. M. Klemenic: The Geochemistry of Upper Proterozoic Lavas From the Red Sea Hills, NE Sudan / Geological Society, London, Special Publications, 33:363-372, doi:10.1144/GSL.SP.1987.033.01.25 --- Proterozoic Volcanic Suites of Australia --- L. A. I. Wyborn, R. W. Page, and A. J. Parker: Geochemical and Geochronological Signatures in Australian Proterozoic Igneous Rocks / Geological Society, London, Special Publications, 33:377-394, doi:10.1144/GSL.SP.1987.033.01.26 --- S. D. James, J. A. Pearce, and R. A. Oliver: The Geochemistry of the Lower Proterozoic Willyama Complex Volcanics, Broken Hill Block, New South Wales / Geological Society, London, Special Publications, 33:395-408, doi:10.1144/GSL.SP.1987.033.01.27 --- I. H. Wilson: Geochemistry of Proterozoic Volcanics, Mount Isa Inlier, Australia / Geological Society, London, Special Publications, 33:409-423, doi:10.1144/GSL.SP.1987.033.01.28 --- L. A. I. Wyborn: The Petrology and Geochemistry of Alteration Assemblages in the Eastern Creek Volcanics, as a Guide to Copper and Uranium Mobility Associated with Regional Metamorphism and Deformation, Mount Isa, Queensland / Geological Society, London, Special Publications, 33:425-434, doi:10.1144/GSL.SP.1987.033.01.29 --- Proterozoic Volcanic Suites of Asia --- Jia Chengzao: Geochemistry and Tectonics of the Xionger Group in the Eastern Qinling Mountains of China—a mid Proterozoic Volcanic arc Related to Plate Subduction / Geological Society, London, Special Publications, 33:436-448, doi:10.1144/GSL.SP.1987.033.01.30 --- Middle to Late Proterozoic Volcanic Suites of the North Atlantic Borderlands --- T. E. Smith and P. E. Holm: The Trace Element Geochemist

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Palaeozoic amalgamation of Central Europe (2002)

Winchester, J. A. [Hrsg.] ; Pharaoh, T. C. [Hrsg.] ; Verniers, J. [Hrsg.]

London : The Geological Society

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Call number: 9/M 03.0216

In: Geological Society special publication

Type of Medium: Monograph available for loan

Pages: 353 S.

ISBN: 1862391181

Series Statement: Geological Society special publication 201

Classification:

Stratigraphy

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Palaeozoic Amalgamation of Central Europe (2002)

Geological Society (London, U.K.) ; Winchester, J. A. ; Pharaoh, T. C. ; [et al.]

London : The Geological Society

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Description / Table of Contents: Palaeozoic Amalgamation of Central Europe summarizes recent research designed to clarify the timing, geometry and processes by which discrete terranes of Central Europe became amalgamated during the Palaeozoic Era. The area studied extends from the southern North Sea to Central Poland along the Trans-European Suture Zone, covering much of Germany, Denmark, Belgium, the Czech Republic and Poland. The 16 papers within the volume are divided into five sections: biostratigraphic/provenance evidence; isotopic constraints; petrological and geochemical evidence; structural evolution; seismic traverses and deep crustal structure. The first section contains papers summarizing continent-specific micropalaeontological and sediment provenance information backing current debates about microcontinent derivation and timing of their accretions to the proto-European continent, Baltica. The section on isotopic constraints discusses the use of isotopic dating to constrain the timing of accretions of rock units exposed in the northern Bohemian Massif, while the following section has more detailed studies of metamorphosed ophiolitic complexes adjoining palaeosutures in the same area. The two papers on the structural evolution of the area contrast a detailed review of the structural evolution of the Sudetes, with a broader, more regionally based hypothesis for the structural evolution of all Central Europe. The final section discusses models based on extensive seismic traverses in contrasting parts of the area - Belgium, the southern North Sea and Poland. This wide-ranging study thus encapsulates the most up-to-date ideas on the Palaeozoic amalgamation of Central Europe from the leading international researchers in the field. The volume will be of interest to those earth scientists in industry and academia with a broad-based interest in the construction of the European continent, primarily biostratigraphers, geophysicists, structural geologists and geochemists.

Pages: Online-Ressource (353 Seiten)

ISBN: 1862391181

URL: http://sp.lyellcollection.org/content/201/1.toc

Language: English

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Palaeozoic amalgamation of Central Europe: an introduction and synthesis of new results from recent geological and geophysical investigations (2002)

Winchester, J. A. ; Pharaoh, T. C. ; Verniers, J.

In: Geological Society Special Publication 201: 1-18.

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Publication Date: 2002-01-01

Description: Multidisciplinary studies undertaken within the EU-funded PACE Network have permitted a new 3-D reassessment of the relationships between the principal crustal blocks abutting Baltica along the Trans-European Suture Zone (TESZ). The simplest model indicates that accretion was in three stages: end-Cambrian accretion of the Bruno-Silesian, [L]ysogory and Ma[l]opolska terranes; late Ordovician accretion of Avalonia, and early Carboniferous accretion of the Armorican Terrane Assemblage (ATA), which had coalesced during Late Devonian -- Early Carboniferous time. All these accreted blocks contain similar Neoproterozoic basement indicating a peri-Gondwanan origin: Palaeozoic plume-influenced metabasite geochemistry in the Bohemian Massif in turn may explain their progressive separation from Gondwana before their accretion to Baltica, although separation of the Bruno-Silesian and related blocks from Baltica during the Cambrian is contentious. Inherited ages from both the Bruno-Silesian crustal block and Avalonia contain a 1.5 Ga Rondonian' component arguing for proximity to the Amazonian craton at the end of the Neoproterozoic: such a component is absent from Armorican terranes, which suggests that they have closer affinities with the West African craton. Models showing the former locations of these terranes and the larger continents from which they rifted, or to which they became attached, must conform to the above constraints, as well as those provided by palaeomagnetic data. Hence, at the end of the Proterozoic and in the early Palaeozoic, these smaller terranes, some of which contain Neoproterozoic ophiolitic marginal basin and magmatic arc remnants, probably occurred within the end-Proterozoic supercontinent as part of a Pacific-type' margin, which became dismembered and relocated as the supercontinent fragmented.

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U-Pb geochronology and global context of the Charnian Supergroup, UK: Constraints on the age of key Ediacaran fossil assemblages (2014)

Noble, S. R., Condon, D. J., Carney, J. N., Wilby, P. R., Pharaoh, T. C., Ford, T. D.

Geological Society of America (GSA)

In: GSA Bulletin

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Publication Date: 2014-12-31

Description: U-Pb (zircon) ages for key stratigraphic volcanic horizons within the ~3200-m-thick Ediacaran-age Charnian Supergroup provide an improved age model for the included Avalonian assemblage macrofossils and, hence, temporal constraints essential for intercomparisons of the Charnian fossils with other Ediacaran fossil assemblages globally. The Ives Head Formation (Blackbrook Group), the oldest exposed part of the volcaniclastic Charnian Supergroup of the late Neoproterozoic Avalonian volcanic arc system of southern Britain, contains a bedding plane with an impoverished assemblage of ivesheadiomorphs that is constrained to between ca. 611 Ma and 569.1 ± 0.9 Ma (total uncertainty). Higher-diversity biotas, including the holotypes of Charnia , Charniodiscus , and Bradgatia , occupy the upper part of the volcaniclastic succession (Maplewell Group) and are dated at 561.9 ± 0.9 Ma (total uncertainty) and younger by zircons interpreted as coeval with eruption and deposition of the Park Breccia, Bradgate Formation. An ashy volcanic-pebble conglomerate in the Hanging Rocks Formation at the very top of the supergroup yielded two U-Pb zircon populations: an older detrital one at ca. 604 Ma, and a younger population at ca. 557 Ma, which is interpreted as the approximate depositional age. The temporal association of the fossiliferous Charnian Supergroup with comparable fossiliferous deep-water successions in Newfoundland, and the probable temporal overlap of the youngest Charnwood macrofossils with those from different paleoenvironmental settings, such as the Ediacaran White Sea macrofossils, indicate a primary role for ecological sensitivity in determining the composition of these late Neoproterozoic communities.

Print ISSN: 0016-7606

Electronic ISSN: 1943-2674

Topics: Geosciences

Published by Geological Society of America (GSA)

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An overlooked play? Structure, stratigraphy and hydrocarbon prospectivity of the Carboniferous in the East Irish Sea-North Channel basin complex (2018)

Pharaoh, T. C., Gent, C. M. A., Hannis, S. D., Kirk, K. L., Monaghan, A. A., Quinn, M. F., Smith, N. J. P., Vane, C. H., Wakefield, O., Waters, C. N.

Geological Society (of London)

In: Special Publications / Geological Society London

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Publication Date: 2018-03-24

Description: Seismic mapping of key Paleozoic surfaces in the East Irish Sea–North Channel region has been incorporated into a review of hydrocarbon prospectivity. The major Carboniferous basinal and inversion elements are identified, allowing an assessment of the principal kitchens for hydrocarbon generation and possible migration paths. A Carboniferous tilt-block is identified beneath the central part of the (Permian–Mesozoic) East Irish Sea Basin (EISB), bounded by carbonate platforms to the south and north. The importance of the Bowland Shale Formation as the key source rock is reaffirmed, the Pennine Coal Measures having been extensively excised following Variscan inversion and pre-Permian erosion. Peak generation from the Bowland source coincided with maximum burial of the system in late Jurassic–early Cretaceous time. Multiphase Variscan inversion generated numerous structural traps whose potential remains underexplored. Leakage of hydrocarbons from these into the overlying Triassic Ormskirk Sandstone reservoirs is likely to have occurred on a number of occasions, but currently unknown is how much resource remains in place below the Base Permian Unconformity. Poor permeability in the Pennsylvanian strata beneath the Triassic fields is a significant risk; the same may not be true in the less deeply buried marginal areas of the EISB, where additional potential plays are present in Mississippian carbonate platforms and latest Pennsylvanian clastic sedimentary rocks. Outside the EISB, the North Channel, Solway and Peel basins also contain Devonian and/or Carboniferous rocks. There have, however, been no discoveries, largely a consequence of the absence of a high-quality source rock and a regional seal comparable to the Mercia Mudstone Group and Permian evaporites of the Cumbrian Coast Group in the EISB.

Print ISSN: 0305-8719

Electronic ISSN: 2041-4927

Topics: Geosciences