Molybdenum as a Paleoredox Proxy: Past, Present, and Future

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Stephan R. Hlohowskyj (Central Michigan University) Anthony Chappaz (Central Michigan University)

Molybdenum as a Paleoredox Proxy

Past, Present, and Future

Stephan R. Hlohowskyj (Central Michigan University), Anthony Chappaz (Central Michigan University), Alexander J. Dickson (Royal Holloway, University of London)

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English

Cambridge University Press
09 September 2021

Geochemistry; Oceanography (seas); Palaeontology

Series: Elements in Geochemical Tracers in Earth System Science

Molybdenum (Mo) is a widely used trace metal for investigating redox conditions. However, unanswered questions remain that concentration and bulk isotopic analysis cannot specially answer. Improvements can be made by combining new geochemical techniques to traditional methods of Mo analysis. In this Element, we propose a refinement of Mo geochemistry within aquatic systems, ancient rocks, and modern sediments through molecular geochemistry (systematically combining concentration, isotope ratio, elemental mapping, and speciation analyses). Specifically, to intermediate sulfide concentrations governing Mo behavior below the 'switch-point' and dominant sequestration pathways in low oxygen conditions. The aim of this work is to 1) aid and improve the breadth of Mo paleoproxy interpretations by considering Mo speciation and 2) address outstanding research gaps concerning Mo systematics (cycling, partitioning, sequestration, etc.). The Mo paleoproxy has potential to solve ever complex research questions. By using molecular geochemical recommendations, improved Mo paleoproxy interpretations and reconstruction can be achieved.

By: Stephan R. Hlohowskyj (Central Michigan University), Anthony Chappaz (Central Michigan University), Alexander J. Dickson (Royal Holloway, University of London)
Imprint: Cambridge University Press
Country of Publication: United Kingdom
Dimensions: Height: 229mm, Width: 150mm, Spine: 3mm
Weight: 69g
ISBN: 9781108995283
ISBN 10: 1108995284
Series: Elements in Geochemical Tracers in Earth System Science
Pages: 75
Publication Date: 09 September 2021
Audience: Professional and scholarly , Undergraduate
Format: Paperback
Publisher's Status: Active

1. Introduction; 2. Refining redox conditions; 3. Molybdenum speciation; 4. Molybdenum isotopes; 5. Research gaps; 6. Future research directions; 7. Recommended reading.