Petrography is a powerful tool to investigate rocks samples and loose preparates. By means of a microscope we characterize the morphology, texture and mineralogy of the components as well as to describe post-depositional features (diagenesis). This enables us to perform environmental, biostratigraphic and stable isotope analyses, as well as pore-system evolution studies. Additionally we use Digital Image Analysis to quantify sedimentary fabrics and pore space structures.