Improving the routine analysis of siderite for δ¹³ C and δ¹⁸ O in environmental change research.

ABSTRACT:

Rationale

The carbon (δ¹³ C) and oxygen (δ¹⁸ O) isotope composition of siderite (FeCO₃ ) is used widely to understand and quantify geochemical processes to reconstruct past climate and environmental change. However, few laboratories follow precisely the same protocol for the preparation and analysis of siderite-bearing materials, which combined with the absence of international reference materials and mineral-specific acid fractionation factors, leads potentially to significant differences in isotope data generated by individual laboratories. Here we examine procedures for the isotope analysis of siderite and discuss factors potentially contributing to inconsistencies in sample measurement data.

Methods

Isotope analysis of siderite is first a

SUBMITTER: Lacey JH 

PROVIDER: S-EPMC10078271 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature