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Hello, G310Brian, and welcome to Wikipedia! Thank you for your contributions. I hope you like the place and decide to stay. Here are a few links to pages you might find helpful:

Please remember to sign your messages on talk pages by typing four tildes (~~~~); this will automatically insert your username and the date. If you need help, check out Wikipedia:Questions, ask me on my talk page, or ask your question on this page and then place {{help me}} before the question. Again, welcome! Vsmith (talk) 02:01, 10 October 2013 (UTC)Reply

In your recent edit to diatreme you added content and references. However, you need to support your content additions with specific references via ref tags or Harvard style reference notes: see WP:Citing sources. Without specific references the new content can be tagged as needing a citation and/or removed. And I am aware the article previously also needed specific ref tags; it was created back in 2005 when current referencing wasn't available - and no one had bothered to update. Vsmith (talk) 02:01, 10 October 2013 (UTC)Reply