How to specify default Logback configuration for any spring profile that is not already present in the config

Here is my simplified logback-spring.xml configuration:

<configuration>

    <!-- appender config -->

    <springProfile name=dev>
        <!-- dev specific config here -->
    </springProfile>

    <springProfile name=prod>
        <!-- prod specific config here -->
    </springProfile>

    <!-- other profiles -->

</configuration>

I would like to get some default logback configuration when I am running my app with some different profile. I couldn't find information about having some default configuration in logback-spring.xml.

Please, note that there are more than 2 profiles defined and I don't know the names of other temp profiles.

Thanks, Pavlo

Actually, found out that defining configuration outside of the profile tag does the job:

<configuration>

    <!-- appenders and profiles -->

    <root level="level here">
        <appender-ref ref="name here"/>
    </root>

    <logger name="name here" level="level here"/>
    <!-- other loggers -->

</configuration>

In this case it will be taken as a base configuration. You can override appender-ref and loggers in profile specific block.