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Nitrogen Isotopes in Deep Time: Elements in Geochemical Tracers in Earth System Science

Autor Colin Mettam, Aubrey L. Zerkle
en Limba Engleză Paperback – 17 feb 2021
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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Specificații

ISBN-13: 9781108810708
ISBN-10: 1108810705
Pagini: 75
Dimensiuni: 230 x 150 x 3 mm
Greutate: 0.05 kg
Editura: Cambridge University Press
Colecția Cambridge University Press
Seria Elements in Geochemical Tracers in Earth System Science

Locul publicării:Cambridge, United Kingdom

Cuprins

1. Introduction – Nitrogen in life; 2. The δ15N proxy in a nutshell; 3. Methods and limitations; 4. Case studies; 5. Future perspectives.

Descriere

Nitrogen stable isotope geochemistry can be used to unravel the evolution of the global N cycle in deep time.