Metamorphosed banded iron formation from southern Wyoming showing deformation and folding. The rock is approximately 2.7 billion years old. (Image by Linda Welzenbach-Fries/Rice University).

Technical Terms Banded Iron Formation (BIF): Sedimentary rocks composed of alternating layers of iron-rich and silica-rich minerals, providing records of early ocean chemistry and redox processes.

In his effort to trace the journey of banded iron formations, Keller crossed disciplinary boundaries and ran into unexpected insights. "If what's happening in the early oceans, after ...

Two RC holes, drilled about 1300 feet apart, were successful in intersecting the targeted Banded Iron Formation ("BIF"). One hole (BIF12-003) intersected 90 feet of iron-formation at 740 feet but ...

These formations, which they have been studying for seven years in Brazil, are extremely resistant rocks formed from iron deposits in ancient oceans. Their surfaces can be more than a billion ...

A Banded Iron-Formation (BIF) with bands of iron-oxide (black) and quartz (white) that were deposited at the seafloor some 2700 million years ago.

Visually striking layers of burnt orange, yellow, silver, brown and blue-tinged black are characteristic of banded iron formations, sedimentary rocks that may have prompted some of the largest ...

Metamorphosed banded iron formation from southern Wyoming showing deformation and folding. The rock is approximately 2.7 billion years old.

HOUSTON – (May 25, 2023) – Visually striking layers of burnt orange, yellow, silver, brown and blue-tinged black are characteristic of banded iron formations, sedimentary rocks that may have ...