Twenty thousand pounds in investment money had produced twelve tons of sugar; the soils were mainly ironstone and gravel entirely unsuitable for the growth of cane or anything else.
Keith tells Richard how the limestone of Wenlock Edge was a key factor in the Industrial Revolution because it was used to extract iron from the ironstone .
For those who would visualize Adobe Walls as a hardscrabble place, it should be noted that the restaurant run by Mrs. Olds served its food on imported white English ironstone dishes.
A syngenetic origin of sulphides was suggested by early workers, mainly based on the stratiform and stratabound occurrence of the sulphides in ironstone .
It is a shale-hosted flint, passing northward into marine shale and southward into marine clay ironstone .
Many tectonic ironstones are rather massive, cherty rocks, suggesting that early structural fabrics were annihilated by late-stage chert replacement.
Rocks adjacent to ironstones are strongly sheared, with the intensity of foliation and lineation decreasing away from ironstone horizon, signifying a pronounced strain gradient.
Oolitic ironstones only form at low sedimentation rates, where accommodation greatly exceeds supply.
Chemical precipitation produces other deposits, such as evaporites, ironstones , and phosphates; and the accumulation of organic matter results in the formation of coal, oil shales, and hydrocarbons.
Brecciated and sheared ironstones were exploited for gold at several localities in the Mafic Formation.