| Shale adjacent to ironstone is ferruginized, strongly foliated and complexly folded where it contains chert layers. |
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| A thin marine clay ironstone with a patchy distribution overlies the flint. |
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| The ironstone is locally represented by hematite matrix-supported vein quartz breccia. |
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| Lee is off and racing up through the deep dish and over the bulge and heading up the ironstone jugs to the belay. |
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| The origin of ironstone can be thought of as a layer-by-layer replacement process of primarily stratified rocks that were subjected to shearing. |
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| Brecciated ironstone is derived from the disruption of banded ironstone with which it is intercalated. |
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| We crossed a salt chain of ponds in a bed of sandstone and ironstone, and nine miles beyond this we came to another. |
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| It has a maximum thickness of 250 m and is absent at several localities except for a continuous ironstone horizon. |
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| It is a shale-hosted flint, passing northward into marine shale and southward into marine clay ironstone. |
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| A syngenetic origin of sulphides was suggested by early workers, mainly based on the stratiform and stratabound occurrence of the sulphides in ironstone. |
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| There is a small ironstone statue on a brick plinth by the gate. |
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| 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. |
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| Where limestone occurs adjacent to ironstone, it shows various stages of replacement by chert and hematitic material parallel to bedding and along fractures. |
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| Sandwell's main industrial growth, based on local coal and ironstone reserves, followed the coming of the canals in the 18th century. |
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| The washing of almost all this placer ore also yields a heavy schorl or wolfram and in some cases grains of tin and ironstone. |
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| Ashton subsequently reported drilling in the Caribou mountains, but encountered an ironstone unit rather than kimberlite. |
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| The ironstone is very dark, which makes the fire stand out and gives a close resemblance to black opal. |
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| This and the local ironstone were promptly exploited by Stephenson, who set up a company in Clay Cross to trade in the minerals. |
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| The two formations show similar types of ooidal ironstone as well as other quite different lithologies. |
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| In January 1877, a great storm swept huge ironstone slabs from the sea bed onto Happisburgh beach. |
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| It also enabled the exploitation of black band ironstone, the use of which had previously proved unprofitable. |
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| Her favorite finds are Limoges china, white ironstone china, blue-and-white Transferware and Lustreware in primitive pink designs. |
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| There were already iron bloomeries and forges on Pensnett Chase by the end of the Tudor period, exploiting the rich seams of ironstone below. |
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| The eastern tradition of smelting used furnaces as well as bellows to create the necessary draft with which to turn charcoal and ironstone into wrought iron and molten waste. |
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| Boulder opal, a thin seam of precious opal on ironstone matrix. |
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| Due to the thin nature of the opal veins which form in the ironstone boulders, it is often impossible to cut domed cabochons in most boulder opal stones. |
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| The sequences consist of a range of rock types including vast outcrops of dolomite, quartzite, conglomerate, ironstone and shale that form a veneer over the granitoidgreenstone basement. |
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| The matrix is usually dark ironstone, but occasionally a light sand stone. |
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| The exhibit also features stromatolite rocks, formed by blue-green algae, and a banded ironstone formation. |
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| The lithologies exposed in the mine workings comprise slaty phyllites, arkoses, greywackes and jaspilite ironstone bands. |
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| While I listen I sniff in the cordite fumes. Ironstone chipped against ironstone invokes a spark and a wisp of the same heady smoke. |
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| The trees like this barren ironstone formation. It's well they do, for nothing else does. |
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| Initial observations suggest that the enriched iron horizons were derived from schistose banded ironstone, with schistocity now seen as specular hematite. |
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| I left the Studio with some nice stuff, pictured here. 2 hanks of the lovely Rio de la Plata, 2 hanks of Ironstone mohair, and 1 hank of Ironstone cotton tape. |
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| Arnold's Ironstone cotton mill, later made Kentucky Blue Jeans, and Seth Read's gristmill, later housed Bay State Arms. |
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| The Carron Company established its ironworks at Falkirk in 1759, initially using imported ore but later using locally sourced Ironstone. |
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| Excluded from nationalisation were industrial lines like the Oxfordshire Ironstone Railway. |
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| The South Uxbridge schoolhouse today houses the south Uxbridge community association at the historic site of Ironstone, Massachusetts. |
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