This conversation with Hilary Corlett is about understanding dolomite diagenesis by analyzing elements and isotopes in age equivalent calcite and dolomite filled burrows. It is based on Hilary Corlett and Brian Jones's  technical article titled “Petrographic and Geochemical Contrasts Between Calcite and Dolomite Filled Burrows in the Middle Devonian Lonely Bay Formation, Northwest Territories, Canada: Implications for Dolomite Formation in Paleozoic Burrows”.  

What is the importance of bioturbation in dolomitization?  What geochemical differences are seen between calcite fills and dolomite fills?  What does a diagenetic halo look like?  Which borrow fill is more proximal?  Which burrow type represents anoxic deposition?   

May this exchange serve to expand your geological knowledge on the go.

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Citation: Hilary J. Corlett, Brian Jones; Petrographic and Geochemical Contrasts Between Calcite- and Dolomite-Filled Burrows In the Middle Devonian Lonely Bay Formation, Northwest Territories, Canada: Implications for Dolomite Formation In Paleozoic Burrows. Journal of Sedimentary Research ; 82 (9): 648–663.