Which type of basaltic lava flow has a fairly smooth,unfragmented,ropy surface?
A)aa
B)pegmatitic
C)pahoehoe
D)scoria

Question

Quizplus · Accepted Answer

Pahoehoe lava flows have a fairly smooth, unfragmented, ropy surface due to their low viscosity and ability to form continuous, undulating, sheet-like surfaces. Aa flows have a rough, blocky surface due to their higher viscosity and tendency to break apart into angular fragments. Pegmatitic lava is not a type of basaltic lava flow, and scoria is a type of volcanic rock formed from ejecta that can contain gas bubbles, but it is not itself a lava flow.

Which Type of Basaltic Lava Flow Has a Fairly Smooth,unfragmented,ropy