Molybdenum as a paleoredox proxy : past, present, and future / Stephan R. Hlohowskyj, Anthony Chappaz, Alexander J. Dickson.

Format:

Book

Author/Creator:

Hlohowskyj, Stephan R., author.

Chappaz, Anthony, author.

Dickson, Alexander J., author.

Series:

Cambridge elements. Elements in geochemical tracers in Earth system science, 2515-7027.

Cambridge elements. Elements in geochemical tracers in Earth system science, 2515-7027

Language:

English

Subjects (All):

Molybdenum--Isotopes.

Molybdenum.

Oxidation-reduction reaction.

Geochemical cycles.

Physical Description:

1 online resource (26 pages) : digital, PDF file(s).

Edition:

1st ed.

Place of Publication:

Cambridge : Cambridge University Press, 2021.

Summary:

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.

Contents:

Cover

Title page

Copyright page

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

Contents

1 Introduction

2 Refining Redox Conditions

3 Molybdenum Speciation

3.1 The Oxic Redox Zone

3.2 The Nitrogenous, Manganous, and Ferruginous Redox Zone(s)

3.3 The Sulfidic Zone(s)

4 Molybdenum Isotopes

5 Research Gaps

5.1 Limitations of Current Approaches

5.2 Molecular Geochemistry

6 Future Research Directions

Recommended Reading

References.

Notes:

Title from publisher's bibliographic system (viewed on 23 Aug 2021).

ISBN:

1-009-00245-7

1-009-00226-0

1-108-99377-X

OCLC:

1276858460