The integration among DW, OLAP and GIS has been given considerable attention in recent years by many researchers and industrial corporations. This may be a result of: 1) DW/OLAP can improve GIS spatial queries whereas, 2) a GIS can provide better support to deal with the DW/OLAP geographic data. Some research about this integration has already been done. However, these approaches do not deal with open and extensible solutions. In order to address this problem, we use the GOLAPA architecture, which follows Java, XML and Web Service technologies. Based on this architecture, this paper proposes GML for Analysis (GMLA), which provides a XML format to integrate and interchange geographical multidimensional data. GMLA is based on OLAP and GIS XML standards, namely XML for Analysis (XMLA) and Geography Markup Language (GML), respectively.