Which statement concerning sedimentary rocks is NOT true?

Parallel, straight, linear imperfections visible on the cleavage surfaces of plagioclase feldspar are called ________.

Basaltic lavas are generally hotter and more viscous than andesite lavas.

Peat is thought to be the original material from which coals are formed.

Which of the following shoreline features forms only in tectonically active areas?

Which was the most powerful, explosive volcanic eruption of historic time?

Aa flows are generally thinner and have smoother surfaces than pahoehoe flows.

The crust, mantle, and outer core are solid.

What percent of Earth’s land surface is currently covered by glaciers?

Vents that emit only heated, volcanic gases and water are called fumaroles.