The Oxidation-Reduction Potential in Geology [Paperback]

Within very recent time, when investigating the allowing one to explain possible transformations according to variations in different characteristics physicochemical conditions under which sedimen? tary rocks formed, geologists were satisfied with of the environment. logical premises prompted by sound judgment. The present book is written within the indicat? ed framework. I am pleased that this book, in which Recognizing the great role of this factor in develop? ment of the science, it is still necessary to keep in the graphical method is used and popularized, has mind that sound judgment based on impressions and been translated into English. subjective experience of the observer does not al? In giving a physicochemical evaluation of ways bring us to an understanding of objective existing methods for determining the oxidation? reduction conditions under which sedimentary rocks reality. Probably greater success in explaining the form, I have tried to present the material in such a way that the warning against too formal an applica? physicochemical features of the environment in which sediments accumulate may be achieved by tion of thermodynamics is obvious.1 The Principal Methods of Determining Oxidation  Reduction Conditions.- The Fe../Fe& Ratio and Eh.- The Forms of Sulfur as Indicators of Oxidation  Reduction Conditions.- The Relationship of Organic Matter in Sediments and the Oxidation  Reduction Potential.- Iron-Mineral Indicators of Oxidation  Reduction Conditions.- Garrels Thermodynamic Diagrams.- Other Methods of Determining Oxidation-Reduction Conditions.- 2 Thermodynamic Principles for Investigating the Conditions of Mineral Formation.- The Solubility of Compounds and the Maximum Work of a Reaction.- The Concept of the Oxidation-Reduction Potential.- Analysis of Some Errors.- 3 Stability Diagrams of Iron Minerals.- Stability Boundary of the Natural Environment.- 4 Conditions for Formation of Iron Minerals during Sedimentation and Diagenesis.- Change oflC×