Nitrogen Isotopes in Deep Time
Book Details
Format
Paperback / Softback
ISBN-10
1108810705
ISBN-13
9781108810708
Publisher
Cambridge University Press
Imprint
Cambridge University Press
Country of Manufacture
GB
Country of Publication
GB
Publication Date
Feb 18th, 2021
Print length
28 Pages
Weight
60 grams
Dimensions
15.20 x 22.80 x 0.80 cms
Product Classification:
Earth sciencesHydrology & the hydrosphereOceanography (seas)The environment
Ksh 3,250.00
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Stable isotope ratios of nitrogen compounds are preserved in the sedimentary record and track these changes over Earth's history, providing important insights into associated biogeochemical feedbacks. Here we review the use of nitrogen stable isotope geochemistry in unravelling the evolution of the global N cycle in deep time.
Nitrogen is an essential nutrient for life, and its sources and cycling have varied over earth history. Stable isotope ratios of nitrogen compounds (expressed as δ15N, in ‰) are preserved in the sedimentary record and track these changes, providing important insights into associated biogeochemical feedbacks. Here we review the use of nitrogen stable isotope geochemistry in unravelling the evolution of the global N cycle in deep time. We highlight difficulties with preservation, unambiguous interpretations, and local versus global effects. We end with several case studies illustrating how depositional and stratigraphic context is crucial in reliably interpreting δ15N records in ancient marine sediments, both in ancient anoxic (Archean) and more recent well oxygenated (Phanerozoic) environments.
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