Database of granites in the Mongol-Okhotsk zone, Mongolia-Siberia, and itsuse in mineral exploration

The Mongol-Okhotsk zone (MOZ) forms an arcuate belt up to 1000 km wide stre tching over 3000 km eastwards from Central Mongolia to the Sea of Okhotsk. The extensive suite of granitoids and related mineralization were formed du ring the Mesozoic. The results of analysis of geochemical data from the MOZ , which are currently managed at the Institute of Geochemistry in Irkutsk ( IGC), are presented in the form of a geochemical data model. The available data were obtained during the past 30 years and include coverage of more th an 900 granite massifs, and data are still being accumulated. The relationa l database is a model providing access to multiple data files via common fi elds using the PARADOX 5.0 database management systems. An entity relations hip diagram technology was used for constructing the database model. The da tabase makes it possible to provide a generalization and analysis of geoche mical data related to metallogeny on new informational levels based on the concept of the ore-bearing potential of granitoid types and the ore product ivity of intrusions. A general hierarchical metallogenic scheme has been de veloped. (C) 1999 Elsevier Science B.V. All rights reserved.