Barium Isotopes
Barium Isotopes

Author: Tristan J. Horner

Publisher: Cambridge University Press

Published: 2021-04-30

Total Pages: 75

ISBN-13: 9781108791113

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In the modern marine environment, barium isotope (δ138Ba) variations are primarily driven by barite cycling-barite incorporates 'light' Ba isotopes from solution, rendering the residual Ba reservoir enriched in 'heavy' Ba isotopes by a complementary amount. Since the processes of barite precipitation and dissolution are vertically segregated and spatially heterogeneous, barite cycling drives systematic variations in the barium isotope composition of seawater and sediments. This Element examines these variations; evaluates their global, regional, local, and geological controls; and, explores how δ138Ba can be exploited to constrain the origin of enigmatic sedimentary sulfates and to study marine biogeochemistry over Earth's history.

Non-Traditional Stable Isotopes
Non-Traditional Stable Isotopes

Author: Fang-Zhen Teng

Publisher: Walter de Gruyter GmbH & Co KG

Published: 2017-03-06

Total Pages: 902

ISBN-13: 3110545632

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The development of multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) makes it possible to precisely measure non-traditional stable isotopes. This volume reviews the current status of non-traditional isotope geochemistry from analytical, theoretical, and experimental approaches to analysis of natural samples. In particular, important applications to cosmochemistry, high-temperature geochemistry, low-temperature geochemistry, and geobiology are discussed. This volume provides the most comprehensive review on non-traditional isotope geochemistry for students and researchers who are interested in both the theory and applications of non-traditional stable isotope geochemistry.

Barium
Barium

Author: Simone Buisset Schwind

Publisher:

Published: 1952

Total Pages: 456

ISBN-13:

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Pelagic Barite
Pelagic Barite

Author: Weiqi Yao

Publisher: Cambridge University Press

Published: 2021-01-28

Total Pages: 46

ISBN-13: 1108847552

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Reconstruction of ocean paleoproductivity and paleochemistry is paramount to understanding global biogeochemical cycles such as the carbon, oxygen and sulfur cycles and the responses of these cycles to changes in climate and tectonics. Paleo-reconstruction involves the application of various tracers that record seawater compositions, which in turn may be used to infer oceanic processes. Several important tracers are incorporated into pelagic barite, an authigenic mineral that forms in the water column. Here we summarize the utility of pelagic barite for the reconstruction of export production and as a recorder of seawater S, O, Sr, Ca and Ba.

Nature's Building Blocks
Nature's Building Blocks

Author: John Emsley

Publisher: Oxford University Press, USA

Published: 2003

Total Pages: 556

ISBN-13: 9780198503408

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A readable, informative, fascinating entry on each one of the 100-odd chemical elements, arranged alphabetically from actinium to zirconium. Each entry comprises an explanation of where the element's name comes from, followed by Body element (the role it plays in living things), Element ofhistory (how and when it was discovered), Economic element (what it is used for), Environmental element (where it occurs, how much), Chemical element (facts, figures and narrative), and Element of surprise (an amazing, little-known fact about it). A wonderful 'dipping into' source for the familyreference shelf and for students.