Sedimentary rocks composed of alternating layers of magnetite,hematite,and chert are called
A)layered iron formations.
B)magnetic-silica formations.
C)silica-iron formations.
D)banded iron formations.

Question

Quizplus · Accepted Answer

Banded iron formations (BIFs) are sedimentary rocks consisting of alternating layers of iron-rich minerals (like magnetite and hematite) and silica-rich layers (like chert). These formations provide evidence of the Earth's early atmospheric conditions.

Sedimentary Rocks Composed of Alternating Layers of Magnetite,hematite,and Chert Are