A shelf can be volcanic.Logical formLearned from3 sentences. Volcanic activity can be in a belt.Logical formLearned from3 sentences. Volcanic rocks can be related.Logical formLearned from3 sentences. A (gas release) can be volcanic.Logical formLearned from3 sentences. Volcanic eruptions can be widespread.Logical formLearned from3 sentences. An outcrop can be constituted-of-or-filled-with volcanic rock.Logical formLearned from3 sentences. A volcanic rock can be glassy.Logical formLearned from3 sentences. An (island fortress) can be volcanic.Logical formLearned from3 sentences. A plain can be constituted-of-or-filled-with volcanic rock.Logical formLearned from3 sentences. A feldspar can be volcanic.Logical formLearned from3 sentences. A remnant may pertain-to a volcanic activity.Logical formLearned from3 sentences. A state can be volcanic.Logical formLearned from3 sentences. A volcanic eruption may be recorded.Logical formLearned from3 sentences. Volcanic gases can be dissolved.Logical formLearned from3 sentences. A portion may pertain-to a volcanic field.Logical formLearned from3 sentences.