Volcanic fields can be active.Logical formLearned from2 sentences. A volcanic plug may be formed.Logical formLearned from2 sentences. A volcanic rock can be ubiquitous.Logical formLearned from2 sentences. An (eruption prediction) can be volcanic.Logical formLearned from2 sentences. (Glass beads) can be volcanic.Logical formLearned from2 sentences. A porosity may pertain-to a volcanic rock.Logical formLearned from2 sentences. A volcanic soil can be ideal.Logical formLearned from2 sentences. A (greenstone belt) may be characterised by volcanic rocks.Logical formLearned from2 sentences. A seismicity may lead to volcanic eruptions.Logical formLearned from2 sentences. Origins can be volcanic.Logical formLearned from2 sentences. Elements can be volcanic.Logical formLearned from2 sentences. Planets can be volcanic.Logical formLearned from2 sentences. Cones may reflect some episodes of volcanic activity.Logical formLearned from2 sentences. Volcanic activity can be frequent.Logical formLearned from2 sentences. A volcanic activity may produce (lava flows).Logical formLearned from2 sentences.