T03 Theme 3: Carbonate sedimentology
T03-SS01 – Geochemistry of modern and Recent carbonates
Conveners: Pederson C. (Ruhr-University, Germany), Sánchez-Román M. (Vrije Universiteit, the Netherlands), Swart P. (Rosenstiel School of Marine and Atmospheric Sciences, USA), Della Porta G. (University of Milan, Italy)
In this session, we invite contributions related to the deposition and early diagenesis of modern and Recent carbonates. Depositional systems ranging from continental to deep marine are welcome, but with a focus on the shallow marine system. Research topics include the geochemical characterization of carbonates in modern systems to better understand the range and meaning of depositional signals, new geochemical proxies, and mechanisms of carbonate precipitation. Furthermore, proxy preservation during formation and the earliest stages of diagenesis is of interest. This session provides an opportunity to present studies within a diverse context of methodologies and approaches, all guided toward a better understanding of the formation and early alteration of carbonate deposits. Geomicrobiological approaches developing calibration of specific and/or new geochemical proxies, such as stable isotopic fractionation and element partitioning for carbonates are very much encouraged. We hope to gather a range of multidisciplinary contributions linking fieldwork, laboratory experimentation with the application of cutting-edge analytical and spectroscopic techniques.
T03-SS02 – Resedimented carbonates – generation, transportation, deposition
Conveners: Slootman A. (King Fahd University of Petroleum and Minerals, Saudi Arabia), Schnyder J. (ExxonMobil, USA), Playton T. (Chevron Global Frontier Exploration & Appraisal, Kurdistan Region of Iraq), Lokier S. (Bangor University, UK)
Carbonate environments yield a diverse range of depositional products. Biogenically-produced and -induced carbonate build-ups have received most of the attention, while resedimented carbonates have been the ‘ugly duckling’ of carbonate sedimentology. Carbonate sediments in marine, lacustrine and terrestrial systems are subject to a multitude of transport and depositional processes. Resedimented carbonates also contribute to large hydrocarbon reservoirs. Carbonate particles comprise a wide range of sizes and shapes governed less by sediment maturity and more by the skeletal nature of the carbonate-producing organisms. The divergence of shape and density between carbonate and siliciclastic particles lead to marked differences in hydraulic behaviour. However, there are many examples of resedimented carbonate and siliciclastic grains occurring together. This session aims to explore depositional models for pure and mixed resedimented carbonates, from modern to ancient and from the scale of single grains to shelf-to-basin profiles, and welcomes researchers from all disciplines, in particular early career scientists.
T03-SS03 (new for 2021) – Carbonate Sequence Stratigraphy: Review and Update
Conveners: Reijmer J. (King Fahd University of Petroleum and Minerals, Saudi Arabia), Hollis C. (The University of Manchester, UK), Betzler C. (Universität Hamburg, Germany), Borgomano J. (Aix-Marseille Université, France), Burgess P. (University of Liverpool, UK), Eberli G. (University of Miami, USA), Foubert A. (Université de Fribourg, France), Kerans C. (The University of Texas at Austin, USA), Mutti M. (Universität Potsdam,Germany), Immenhauser A. (Ruhr-Universität Bochum, Germany), Puga-Bernabéu Á. (University of Granada, Spain), van Buchem F. (Halliburton Landmark, UK)
In this session we seek contributions that consider the application of sequence stratigraphy in carbonate-dominated sedimentary systems which enclose shallow to deep-water depositional systems of tropical, cool-water and microbial carbonate factories through time. In particular, we aim to challenge the notion that sequence stratigraphic concepts are always a valid mechanism for predicting facies distribution in time and space.
We aim for contributions discussing (i) the advances in carbonate sequence stratigraphic models and the issues those models have not fully addressed, (ii) evaluation of the differences between full siliciclastic and full carbonate-dominated sedimentary systems, but (iii) also studies assessing mixed systems, and (iv) forward modelling initiatives. Hence, we aim to re-evaluate all processes involved directing the evolution of carbonate systems in general. How different are they when compared to siliciclastics and why?