Japanese to English Science Geology Volcanoes

I'm doing a translation of a travel website about Lake Toya in Hokkaido, and there's a section on Showashinzan, which is a mountain that was created by volcanic activity. The paragraph in which the term appears is below.

昭和１８年、青い麦畑から地震と爆発音とともにふくれ上がった昭和新山。４ヶ月の爆発、その間刻々と隆起する大地、地球のエネルギーは地底で固まった粘性の強いデイサイト溶岩を押し上げ、４０２ｍのベロニーテ型火山を出現させたのです。昭和新山の誕生を見守り続けたのが郵便局長の三松正夫さんでした。地震発生から噴火、そしてその活動が止まるまでを独学の観測方法でつぶさに観察、詳細な記録を残した後にミマツダイヤグラムと命名、称賛されました。昭和新山山麓には三松正夫記念館があり、昭和新山の生い立ちを克明に観察・記録したミマツダイヤグラムをはじめ、資料、観測機器、写真などが展示されています。

I have searched Wikipedia, Google and other resources and haven't found a good translation. Google Translate gave me "beronite" but the phrase "beronite volcano" doesn't show any results in a Google search, so I don't think that term exists. As of now I'm just leaving out ベロニーテ型 and have inserted a comment for the agency saying that I couldn't find the term, but if anyone can help by Wednesday the 18th, it would be greatly appreciated.

Thanks,

Alex