Sedimentology and geochemistry of modern temperate bryozoan carbonates around Tasmania, Australia

TL;DRAbstract

This thesis describes various aspects of the modern temperate, shallow (<200m) shelf sediments around Tasmania (latitudes -38°-44° S, longitudes -144°- 149° E), Australia, and is structured into three different sections: eastern and western Tasmania, and Bass Strait. These are ideal open shelf environments for carbonate sedimentation due to availability of nutrients, presence of different water masses, limited terrigenous input and low variation in seawater temperature and salinity. These conditions maintain sufficient saturation of CaCO3 and thus preserve extensive temperate carbonates around Tasmania. In this study, sedimentological and geochemical properties are combined with present oceanographic features to obtain a better understanding of the origin, variation and distribution of sediments off Tasmania. In addition to bulk sediments, specimens of different bryozoan morphotypes have been selected to evaluate their reliability in recording ambient environmental c

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