Search Results - "Bickle, Mike J."

An activity model for phase equilibria in the H2O–CO2–NaCl system by Dubacq, Benoît, Bickle, Mike J., Evans, Katy A.

“…We present a semi-empirical thermodynamic model with uncertainties that encompasses the full range of compositions in H2O–CO2–NaCl mixtures in the range of…”
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The short term climatic sensitivity of carbonate and silicate weathering fluxes: Insight from seasonal variations in river chemistry by Tipper, Edward T., Bickle, Mike J., Galy, Albert, West, A. Joshua, Pomiès, Catherine, Chapman, Hazel J.

“…Large seasonal variations in the dissolved load of the headwater tributaries of the Marsyandi river (Nepal Himalaya) for major cations and 87Sr/ 86Sr ratios…”
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Geological carbon storage by Bickle, Mike J

“…Storage of the carbon dioxide that is produced by burning fossil fuels is one way to avoid the damaging consequences of climate change. A range of observations…”
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Noble gas and carbon isotopic evidence for CO2-driven silicate dissolution in a recent natural CO2 field by Dubacq, Benoît, Bickle, Mike J., Wigley, Max, Kampman, Niko, Ballentine, Chris J., Sherwood Lollar, Barbara

“…Secure storage of anthropogenic carbon dioxide (CO2) in geological reservoirs requires predicting gas–water–rock interactions over millennial timescales. Noble…”
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The reactive transport of Li as a monitor of weathering processes in kinetically limited weathering regimes by Bohlin, Madeleine S., Bickle, Mike J.

“…•Li and Li-isotopic ratios in river water may be described by two dimensionless numbers.•Multiple hydrological, climatic and tectonic parameters make up the…”
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High‐precision determination of lithium and magnesium isotopes utilising single column separation and multi‐collector inductively coupled plasma mass spectrometry by Bohlin, Madeleine S., Misra, Sambuddha, Lloyd, Nicholas, Elderfield, Henry, Bickle, Mike J.

“…Rationale Li and Mg isotopes are increasingly used as a combined tool within the geosciences. However, established methods require separate sample purification…”
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Global silicate weathering flux overestimated because of sediment–water cation exchange by Tipper, Edward T., Stevenson, Emily I., Alcock, Victoria, Knight, Alasdair C. G., Baronas, J. Jotautas, Hilton, Robert G., Bickle, Mike J., Larkin, Christina S., Feng, Linshu, Relph, Katy E., Hughes, Genevieve

“…Rivers carry the dissolved and solid products of silicate mineral weathering, a process that removes CO₂ from the atmosphere and provides a key negative…”
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Triple oxygen isotope insight into terrestrial pyrite oxidation by Hemingway, Jordon D., Olson, Haley, Turchyn, Alexandra V., Tipper, Edward T., Bickle, Mike J., Johnston, David T.

“…The mass-independent minor oxygen isotope compositions (Δ′17O) of atmospheric O₂ and CO₂ are primarily regulated by their relative partial pressures, pO₂/pCO₂…”
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Calcium and magnesium isotope systematics in rivers draining the Himalaya-Tibetan-Plateau region: Lithological or fractionation control? by Tipper, Edward T., Galy, Albert, Bickle, Mike J.

“…In rivers draining the Himalaya-Tibetan-Plateau region, the 26Mg/ 24Mg ratio has a range of 2‰ and the 44Ca/ 42Ca ratio has a range of 0.6‰. The average δ 26…”
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Pulses of carbon dioxide emissions from intracrustal faults following climatic warming by Kampman, Niko, Burnside, Neil M., Shipton, Zoe K., Chapman, Hazel J., Nicholl, Joe A., Ellam, Rob M., Bickle, Mike J.

“…Carbon capture and geological storage represents a potential means of managing atmospheric carbon dioxide levels. Understanding the role of faults, as either…”
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Himalayan metamorphic CO2 fluxes: Quantitative constraints from hydrothermal springs by Becker, John A., Bickle, Mike J., Galy, Albert, Holland, Tim J.B.

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The signature of devolatisation: Extraneous 40Ar systematics in high-pressure metamorphic rocks by Smye, Andrew J., Warren, Clare J., Bickle, Mike J.

“…The validity of using the 40Ar/39Ar system for thermochronology relies on the assumption that the source mineral is surrounded by a grain boundary reservoir…”
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Relative contributions of silicate and carbonate rocks to riverine Sr fluxes in the headwaters of the Ganges by Bickle, Mike J., Chapman, Hazel J., Bunbury, Judith, Harris, Nigel B.W., Fairchild, Ian J., Ahmad, Talat, Pomiès, Catherine

“…Exhumation of the Himalayan-Tibetan orogen is implicated in the marked rise in seawater 87Sr/ 86Sr ratios since 40 Ma. However both silicate and carbonate…”
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Fluxes of Sr into the headwaters of the Ganges by Bickle, Mike J, Bunbury, Judith, Chapman, Hazel J, Harris, Nigel B.W, Fairchild, Ian J, Ahmad, Talat

“…Himalayan weathering is recognized as an important agent in modifying sea water chemistry, but there are significant uncertainties in our understanding of…”
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Secrets of the sea floor by Bickle, Mike J, Pälike, Heiko, Teagle, Damon A. H

“…Ocean drilling is the most successful long-standing international collaboration in the geosciences. The invaluable archive of samples and data that has been…”
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Early to mid-Pleistocene ostracod δ18O and δ13C in the central Tibetan Plateau: Implication for Indian monsoon change by Jin, Zhangdong, Bickle, Mike J., Chapman, Hazel J., Yu, Jimin, Wang, Sumin, Chen, Shiyue

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Petrogenesis and tectonic setting of bimodal volcanism in the Sakoli Mobile Belt, Central Indian shield by Ahmad, Talat, Longjam, Kabita C., Fouzdar, Baishali, Bickle, Mike J., Chapman, Hazel J.

“…The Sakoli Mobile Belt comprises bimodal volcanic rocks that include metabasalt, rhyolite, tuffs, and epiclastic rocks with metapelites, quartzite, arkose,…”
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Partitioning riverine sulfate sources using oxygen and sulfur isotopes: Implications for carbon budgets of large rivers by Relph, Katy E., Stevenson, Emily I., Turchyn, Alexandra V., Antler, Gilad, Bickle, Mike J., Baronas, J. Jotautas, Darby, Stephen E., Parsons, Daniel R., Tipper, Edward T.

“…•Oxygen isotopes in river water sulfate enable partitioning of sulfate source.•Isotope data demonstrates 56% of sulfate in the Mekong River is derived from…”
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Sr-isotopic ratios trace mixing and dispersion in CO2 push-pull injection experiments at the CO2CRC Otway Research Facility, Australia by Bickle, Mike J., Stevenson, Emily I., Haese, Ralf R.

“…Analysis of 87Sr/86Sr ratios and modelling of formation water, injection water and produced water compositions from the CO2CRC Otway Research Facility in…”
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High-temperature kinetic isotope fractionation of calcium in epidosites from modern and ancient seafloor hydrothermal systems by Brown, Shaun T., Turchyn, Alexandra V., Bickle, Mike J., Davis, Amy C., Alt, Jeffrey C., Bédard, Jean H., Skulski, Thomas, DePaolo, Donald J.

“…•Epidosites from ophiolites have lower δ44Ca than hydrothermal fluids.•The fractionation of −0.2 to −0.5 is most likely a kinetic isotope effect.•Epidote can…”
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