viscous lava in a sentence

Examples

1. Some ridges, however, may represent flow fronts, but their estimated heights of several hundred meters would require formation by extraordinarily viscous lavas.
2. The third phase ended temporarily with viscous lava obstructing the vents, but continued soon with explosive activity restricted to the Gris and El Azufral craters.
3. The viscous lava gains a solid crust on contact with the water, and this crust cracks and oozes additional large blobs or " pillows " as more lava emerges from the advancing flow.
4. Unlike a lava dome, a resurgent dome is not formed by the extrusion of highly viscous lava onto the surface, but rather by the uplift and deformation of the surface itself by magma movement underground.
5. Eruptive activity at Bagana is frequent and is characterized by non-explosive effusion of viscous lava that maintains a small lava dome in the summit crater, although explosive activity occasionally producing pyroclastic flows also occurs.
6. Cerro Quemado is the largest ( about 2 km 3 ) and youngest lava dome complex formed by eight vents with viscous lava flows and plugs during four distinct volcanic phases-the first two involving effusion of lava and formation of new domes.