Table Of Content

Preffeseurth http://www.elsevier.com/locate/precamres ELSEVIER VOLUMES 192-195 CONTENTS January 2012 (Abstracts/contents lists published in Am. Geol. Inst. Bitliogr.; Abstr. Bull. Signaletique; Chem. Abstr.; Curr. Contents; Phys Chem. Earth Sci., Geo Abstr.; Mineral Abstr.) Detrital zircon U-Pb dating, Hf isotopes and whole-rock geochemistry from the Songshan Group in the Dengfeng Complex: Constraints on the tectonic evolution of the Trans-North China Orogen C. Liu, G. Zhao, M. Sun, J. Zhang, C. Yin andY . He Paleoproterozoic eclogites of MORB-type chemistry and three Proterozoic orogenic cycles in the Ubendian Belt (Tanzania): Evidence from monazite and zircon geochronology, and geochemistry N. Boniface, V. Schenk and P. Appel Timing of accretion, intra-orogenic sedimentation and basin inversion in the Paleoproterozoic Svecofennian orogen: The Pyhantaka area, southern Finland M. Nironen and |. Manttari U-Pb zircon ages of orthogneisses and supracrustal rocks of the Cariris Velhos belt: Onset of Neoproterozoic rifting in the Borborema Province, NE Brazil 1.2 GuimaraesW,.R . Van Schmus, B.B. de Brito Neves, S.M. Bretas Bittar, A.F Silva Filho and R. Armstrong .... Isotopic evidence for a sizeable seawater sulfate reservoir at 2.1 Ga M. ReuschelV,.A . Melezhik, M.J. Whitehouse, A. Lepland, A.E. Fallick and H. Strauss Trace and rare earth elemental investigation of a Sturtian cap carbonate, Pocatello, |daho: Evidence for ocean redox conditions before and during carbonate deposition E.E. Meyer, A.N. Quicksall, J.D. Landis, PK. Link and B.C. Bostick Depositional age, provenance, and tectonic setting of the Neoproterozoic Sibao Group, southeastern Yangtze Block, South China W. Wang, M.-F Zhou, D.-P. Yan and J.-W. Li Integrated chemostratigraphy of the Doushantuo Formation at the northern Xiaofenghe section (Yangtze Gorges, South China) and its implication for Ediacaran stratigraphic correlation and ocean redox models S. Xiao, K.A. McFadden, S. Peek, A.J. Kaufman, C. Zhou, G. Jiang and J. Hu Using zircon U-Pb ages and trace element chemistry to constrain the timing of metamorphic events, pegmatite dike emplacement, and shearing in the southern Parry Sound domain, Grenville Province, Canada J.H. Marsh, C.C. Gerbi, N.G. Culshaw, S.E. Johnson, J.L. Wooden and C. Clark The provenance of Late Ediacaran and Early Ordovician siliciclastic rocks in the Southwest Central Iberian Zone: Constraints from detrital zircon data on northern Gondwana margin evolution during the late Neoproterozoic M.F. Pereira, U. Linnemann, M. Hofmann, M. Chichorro, A.R. Sola, J.M edina and J.B. Silva The Neoproterozoic subduction complex in southern India: SIMS zircon U-Pb ages and implications for Gondwana assembly M. Santosh, W.J. Xiao, T.T sunogaTe.R,.K . Chetty andT. Yellappa Geochronology of the North Caribou greenstone belt, Superior Province Canada: Implications for tectonic history and gold mineralization at the Musselwhite mine J. Biczok, P. Hollings, P. Klipfel, L. Heaman, R. Maas, M. Hamilton, S. Kamo and R. Friedman CAPTION FOR COVER PHOTOGRAPH 3,243 million-year-old spherules in the Fig Tree Group, Barberton Greenstone Belt, South Africa, formed as a result of large meteorite impacts on the early Earth. The 35-cm-thick spherule bed (S3) is composed of nearly pure spherules produced during the condensation of an impact-produced rock vapor cloud. The estimated diameter of the bolide was 20-50 km. The spherules, 0.5-1.5 mm in diameter in the photo, include silica-(clear), phyllosilicate- (gray), and rutile/anatase-rich (black) varieties; massive and layered types; and a few originally hollow spherules. This is one of four spherule layers in the Barderton Belt, ranging from 3,470-3,243 Ma, that represent the oldest known impact deposits and provide direct evidence for a significant flux of large impactors as late as 3.2 Ga. Photograph: D.R. Lowe IN MA SciVerse ScienceDirect Available online at www.sciencedirect.com