Isotope Geochemistry
Hydrogen isotope geochemistry of the mantle: constraints from back arc basin basalts and mantle xenoliths
... H isotope geochemistry differs in one important respect from its O isotope geochemistry: metamorphic, melting, and metasomatic processes—generally considered unimportant for most recognized ...
150
Source of Mineralization Material of Xiaochigou Gold Deposit in Western Henan: Sulfur and Lead Isotope Geochemistry
... makes isotope studies impossible to trace the source of ore-forming materials and fluids in orogenic gold deposits, especially to distinguish metamorphic and magmatic fluids; Chen Yanjing and other scholars [9, ...
6
Sulfur isotope geochemistry and mineralogy of Balcilar vein type barite-sulphide mineralization, Biga peninsula, NW Turkey
... identified the alteration zones using Landsat TM images. Despite previous studies of the Balcılar mineralization [4],[5], [9], the origin of the oxidised and reduced sulfur in barite and galena is still unknown. This ...
6
Environmental and Sea-Level Reconstruction in Temperate, Subtropical, and Tropical Coastal Wetlands Using Bulk Stable Carbon Isotope Geochemistry and Microfossils
... The modern distribution of bulk stable carbon isotope geochemistry was described from vegetation and surface sediment samples collected from four coastal wetlands of the Thames Estuary a[r] ...
355
Terrestrial Paleoclimate and Geology during Unusual Climate States – Utilizing Isotope Geochemistry across Ellesmere and Axel Heiberg Islands, Arctic Canada.
... oxygen isotope values obtained in this study are consistent with regional environmental water δ 18 O estimates, and carbon isotope values for micritic samples are significantly ...
103
Excursions to C4 vegetation recorded in the Upper Pleistocene loess of Surduk (Northern Serbia): an organic isotope geochemistry study
... Another example related to the Last Glacial Maximum (LGM) can be found based on Alpine evidence and SST reconstructions. Several studies (Florineth and Schl¨uchter, 2000; K¨uhlemann et al., 2008, 2009) show that the LGM ...
14
The isotope geochemistry of Ni
... nuclides, including 48 Ca, 60 Fe, 62 Ni and 64 Ni. Due to the size of the progenitor (<1.39 M ) the stars are old, ~1 Ga, as they have burned their fuel slowly. This means they out-live the stellar nurseries ...
34
A brief warming event in the late Albian: evidence from calcareous nannofossils, macrofossils, and isotope geochemistry of the Gault Clay Formation, Folkestone, southeastern England
... aimed for additional resolution around the middle–upper Al- bian boundary (Beds VII–VIII) and to have the best possi- ble correspondence with the isotope samples (44 samples), which were collected during a ...
17
Stable isotope geochemistry of a late Quaternary coral reef sequence, New Guinea : application of high resolution data to palaeoclimatology
... 4 .1 3.5 72 The isotopic chemistry of the water and carbon cycle on the Huon coast, New Guinea 75 Diurnal variations in the 1 Bo/ 16o and l3c/ 12 c ratios of sea water in Sialum lagoon 7[r] ...
306
Variation in brachiopod microstructure and isotope geochemistry under low pH–ocean acidification conditions
... Stable isotope variation under low-pH conditions Brachiopod shells are commonly used as archives for deep- time paleoenvironmental reconstructions as they potentially record the original geochemical composition of ...
26
The isotope geochemistry of zinc and copper
... Geochim Cosmochim Acta 67:143-151 Luck JM, Othman DB, Albarède F 2005 Zn and Cu isotopic variations in chondrites and iron meteorites: Early solar nebula reservoirs and parent-body proce[r] ...
120
Boron isotope geochemistry in the sedimentary environment
... Although the bulk of the oilfield brines from Heletz have a marine signature (Na/Cl ratios and S ^ B values), small but significant additional variations can be identified: low-salinity (TDS) brines are associated with ...
184
Strontium isotope geochemistry of alluvial groundwater: a tracer for groundwater resources characterisation
... This study focused on strontium isotope data and major ions from shallow groundwater and river water in the alluvial valley of the Loire and Allier rivers, France. This work is part of the increasing use of ...
14
Carbonate Clumped Isotope Thermometry: Applications to Carbonaceous Chondrites and Effects of Kinetic Isotope Fractionation
... I would like to express my gratitude to all those who made it possible for me to complete this thesis. First of all, I am deeply indebted to my thesis advisor, John M. Eiler, whose encouragement, patience and stimulating ...
261
Barite Celestine Geochemistry and Environments of Formation
... Barite precipitated with seawater sulfate as the principal source of sulfur has several distinct modes of formation in modern marine environments, including: (1) biologically- mediated [r] ...
83
Recent Contributions in the Field of Sediment Geochemistry
... Sediments hold important clues on the past geology and climate of depositional basins. It is a challenge to explore for the past climatic signatures in sediment archives to understand the future climate changes. Sediment ...
11
Isotope : Informing Science Outreach and Public Engagement Final report of the NESTA funded Isotope project
... It follows that we started the project with a set of assumptions and ideas that informed the initial phases of action research. However, we did not know what was required of the site until we had engaged with the ...
61
Evaluation method for waterflooded zone with geochemistry
... technology.Reservoir geochemistry in the late 1980s began to rise, as a branch discipline of geochemistry, in oil and gas accumulation research and exploration stage of reservoir evaluation plays an ...
6
Geochemistry of continental subduction zone fluids
... Great advances have been made in the past two decades on the geochemistry of continental subduction-zone fluids. This is primarily achieved by natural observations of exhumed UHP eclogite-facies metamorphic rocks ...
16
Mixtures of multiplicative cascade models in geochemistry
... In applications concerned with turbulence, the original bi- nomial model of de Wijs is known as the p-model (Schertzer et al., 1997). Several advanced cascade models in meteorol- ogy (Veneziano and Langousis, 2005) ...
9