Sentences with phrase «rich iron deposits»

Although no written records exist of the early history of the Phalaborwa district, archaeologists and geologists agree that it was once an area of intense volcanic activity; resulting in rich iron deposits.

The Soudan Mine opened in 1884 atop one of the richest iron deposits in the world — hard hematite, about 65 percent pure.

Not exact matches

Marbles in metamorphic aureoles and iron - rich skarns appear to be favored sites for gold mineralization in these deposits, perhaps due to the rheological character, permeability after fracturing, and chemical reactivity of those rocks to alteration by hydrothermal fluids.

This compared with the mining boom in which Australia and Brazil's rich iron ore deposits made them the only beneficiaries of China's rapid industrialization.

Banded iron is the iron - rich rock found in ore deposits worldwide, from the proposed iron mine in Northern Wisconsin to the enormous mines of Western Australia.

n isolated, iron - rich bay in the heart of East Africa is offering scientists a rare glimpse back into Earth's primitive marine environment, and supports theories that tiny microbes created some of the world's largest ore deposits billions of years ago.

They noted that in the wake of iron - rich debris deposited by the icebergs, blooms of phytoplankton emerged, sometimes up to 1000 kilometers from the iceberg itself.

Kopp et al. (2007) and Schumann et al. (2008) found that a clay layer deposited during the PETM in the Salisbury Embayment (which stretches from New Jersey to Virginia) recorded the unusually rich growth of magnetotactic bacteria and of other unique and presumptively eukaryotic iron biomineralizing organisms.

The region was inhabited by Carthaginians and Romans drawn by rich iron and lead deposits.

They noted that in the wake of iron - rich debris deposited by the icebergs, blooms of phytoplankton emerged, sometimes up to 1000 kilometers from the iceberg itself.