Abstract:

It is necessary to clarify the data types of strata information system and their features based on the concept of the geological entity. The data of strata information system are summed to 4 categories, namely the attribute data, geometric data, relation data, metadata. Geological entities are divided to basic geological entities and geological entity elements; and the latter are further divided to connection elements and non-connection elements. The geometric properties of ore bodies, weathering interfaces, faults, folds, unconformity planes and sliding bodies are analyzed. With the difference between locations of the observer, data gathering and data corresponding to considered, the concepts of surface survey, driving-in survey, stratum perspective survey and stratum non-perspective survey are proposed as a classification of geological investigation methods; and the corresponding relationships between raw data and geological entities are analyzed.

Key words: strata information system, basic geological entity, geological entity element, spatial property, stratum perspective survey, stratum non-perspective survey