1. Mohamad Amin Ahlun Nazar
2. Bagus Priyanto
3. Muhammad Rizky Harun
The short course of sedimentology and statigraphy by Mohamad Amin Ahlun Nazar , Bagus Priyanto from Statoil, and Rizky Harun from Pertamina EP held on 31st October 2015 had been succeeded. The first speaker, Mohamad Amin Ahlun Nazar from Pertamina EP, and second speaker, Bagus Priyanto from Statoil, explained about sedimentology. He also told us about FOSI or can be called Indonesian Sedimentologists Forum. FOSI was built in 1995. It also has a sedimentology journal site in http://www.iagi.or.id/Fosi/ .
Mr Amin explained that sedimentology was a natural process in this world and the connection between sedimentology and statigraphy were that sedimentology was the object to stratigraphy itself. Stratigraphy was used to make a chronology from sedimentology. There were six distinct steps of sedimentology, which were weathering, erosion, transport, deposition, diagenesis, and lithification. Sedimentology has a lot of functions but the clearest function from sedimentology was to determine the condition and how one package of sediment relates to other. To determine the condition of sediment, sedimentology has three models, there were rock record, modern record, and big picture.
The general principal of sedimentology was uniformitarianism. Uniformitarianism could be used to describe the past by using the present. To use uniformitarianism, we need to have interpretations which include three steps, Development, Exploration, and Track of System.
The third speaker was mainly talking about how physics used to determine the model of geological structure. The physics principal which used in geological structure was the principal of wave, seismic inverse. The seismic inverse was used to make a model below the crust of earth with seismic data as the input and the well’s data as control. Beside seismic inverse, elastic property also used in determine the geological model. Elastic property includes incompressibility and rigidity.