Nitrogen Isotopes in Deep Time
Seiten
2021
Cambridge University Press (Verlag)
978-1-108-81070-8 (ISBN)
Cambridge University Press (Verlag)
978-1-108-81070-8 (ISBN)
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.
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.
1. Introduction – Nitrogen in life; 2. The δ15N proxy in a nutshell; 3. Methods and limitations; 4. Case studies; 5. Future perspectives.
| Erscheinungsdatum | 02.02.2021 |
|---|---|
| Reihe/Serie | Elements in Geochemical Tracers in Earth System Science |
| Zusatzinfo | Worked examples or Exercises |
| Verlagsort | Cambridge |
| Sprache | englisch |
| Maße | 230 x 150 mm |
| Gewicht | 590 g |
| Themenwelt | Naturwissenschaften ► Biologie ► Ökologie / Naturschutz |
| Naturwissenschaften ► Geowissenschaften ► Geologie | |
| Naturwissenschaften ► Geowissenschaften ► Hydrologie / Ozeanografie | |
| ISBN-10 | 1-108-81070-5 / 1108810705 |
| ISBN-13 | 978-1-108-81070-8 / 9781108810708 |
| Zustand | Neuware |
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