lava sheet

The formation of the maria lava sheets is consistent with melting by tidal forces.

The dark areas were just lava sheets."

You saw how those lava sheets were pouring up out of the rifts in those last images?"

A strong anomaly near Broadclyst is probably caused by the northern edge of a concealed southward-dipping lava sheet.

Each scarp is a few tens of metres high and could be the solidified flow front of a lava sheet.

Mare Ingenii is incompletely and thinly covered over much of its expanse with mare lava sheets.

As the lava sheets had cooled they had stiffened in their descent, leaving low curved bulges to ascend or bypass.

Now they slowed, angling across to achieve the phenomenal, sixty-meridian-wide lava sheet, the residue of the vent's colossal effusions.

In north-western Wyoming, there are extensive lava sheets, uplifted and dissected, and crowned with a few dissected volcanoes.

Subsequent erosion, glaciation, and uplift exposed the weather resistant edge of the traprock lava sheets, creating the cliffline of the Metacomet Ridge as it is today.

Thus the uplifted, dislocated and dissected lava sheets of Yellowstone National Park in the Rocky Mountains on the east (at the headwaters of the Snake River) are associated with the older lavas of the Columbian plains.

Subsequent erosion wore away the weaker sedimentary layers a faster rate than the lava layers, leaving the abruptly tilted edges of the lava sheets exposed, creating the distinct linear ridge and dramatic cliff faces visible today along the Metacomet Ridge.

The Snake River has cut a deeper canyon farther southeast where the plains are higher and has disclosed the many lava sheets which build up the plains, occasionally revealing a buried mountain in which the superposed river has cut an even narrower canyon.