Along the Acasta River, this basement complex yields protolith ages up to ca. 4.03 Ga.

The northeastern basement complex contains rocks which date 2.44 billion years ago.

CHAPTER Geli Bauer sat within the dark bowels of the Trinity building, a basement complex lit only by the glow of computer monitors and surveillance screens.

Geli wrote it down, then pressed a button that sounded a tone in a room at the back of the basement complex.

PAN: on Arrakis, any low-lying region or depression created by the subsiding of the underlying basement complex.

Underneath the oil-bearing sedimentary formations, the basement granitic complex is of Jurassic age.

The metamorphic and igneous rocks of the "basement complex" were created 1.5 to 1.0 billion years ago in a tectonically active setting.

The younger sedimentary rocks that were deposited on top of this basement complex were formed in a setting of quiet marine and river waters.

The formation of basement complex along the boundaries of Zamboanga del Norte is influenced by the north-south trending fault.

The Fremen removed a rock plug that opened a passage down into the native basement complex of the desert.