This paper uses CIDOC CRM and CRM-based models (CRMarchaeo, CRMsci) to represent archaeological excavation activities and the observations of archaeologists during their work in the excavation field. These observations are usually recorded in documents such as context sheets. As an application of our approach (case study), we used the records of the recent archaeological excavations in Fuwairit in Qatar, part of the Origins of Doha and Qatar Project. We explore issues related to the application of classes and properties as they appear in the latest versions of the aforementioned models, i.e. CIDOC CRM, CRMarchaeo, and CRMsci. The proposed data model could be used as the basis to create an automated system for archaeological documentation and archeological data integration.