In semiarid and subhumid areas with acidic soils a rock-like layer called ironstone can form (Box 9.4). From Wordnik.com. [5. How plants live and grow] Reference
The term "ironstone" was first registered by Charles James Mason in July 1813. From Wordnik.com. [columbiatribune.com stories] Reference
The species grows well on arid ironstone plateaus. From Wordnik.com. [Chapter 7] Reference
On the crest, the rock consisted of clay ironstone. From Wordnik.com. [Journal of an Expedition into the Interior of Tropical Australia] Reference
In spots the path led over ironstone that resembled slag. From Wordnik.com. [First footsteps in East Africa] Reference
On an ironstone rock-face on the Shoalhaven River are many 'hands.'. From Wordnik.com. [Adventures in Southern Seas A Tale of the Sixteenth Century] Reference
The magnetic ironstone (22a) was examined and found to contain of —. From Wordnik.com. [The Land of Midian] Reference
The micaceous ironstone (22b) was examined and found to contain of –. From Wordnik.com. [The Land of Midian] Reference
Lump of red ironstone associated with sand and earthy substances, containing. From Wordnik.com. [The Land of Midian] Reference
It is also found on sandy plains and on highly ferrugineous banded ironstone. From Wordnik.com. [7. Other Promising Species] Reference
We passed over some ironstone ridges, and rocky hills, covered with CALLITRIS. From Wordnik.com. [Narrative of an expedition undertaken for the exploration of the country lying between Rockingham Bay and Cape York] Reference
The clays are mottled green and bluish, with bands of ironstone, and concretions of lime. From Wordnik.com. [Records of Woodhall Spa and Neighbourhood Historical, Anecdotal, Physiographical, and Archaeological, with Other Matter] Reference
Channel, an almost exhaustless supply of coal and ironstone, which are yet nearly unwrought. From Wordnik.com. [The Mirror of Literature, Amusement, and Instruction Volume 12, No. 321, July 5, 1828] Reference
The town-walls are built of flint and concrete bonded with ironstone, and are backed with earth. From Wordnik.com. [Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"] Reference
W., arriving soon at a steep low ridge of clay ironstone, which was covered thick with brigalow. From Wordnik.com. [Journal of an Expedition into the Interior of Tropical Australia] Reference
A lump of soft, ochrey red-brown ironstone, coated with a thin layer of greyish white substance. From Wordnik.com. [The Land of Midian] Reference
Weathering of joints in the limestone and bands of ironstone produce pinnacles and pagoda-like forms. From Wordnik.com. [Greater Blue Mountains Area, Australia] Reference
Other soil types include gravels on ironstone ridges and light-red loams associated with granitic outcrops. From Wordnik.com. [7. Other Promising Species] Reference
Like caliche, ironstone gravel or solid layers limit root growth and cause waterlogging by slowing drainage. From Wordnik.com. [5. How plants live and grow] Reference
In some areas the plateau is crowned by a hard layer of laterite, ironstone shield or impervious conglomerates. From Wordnik.com. [Cliffs of Bandiagara (Land of the Dogons), Mali] Reference
The general formation is granitic, overlaid by sandstone, laterite or clay ironstone, and to the north by limestone. From Wordnik.com. [The Golden Chersonese and the way thither] Reference
From 9 a.m. the ground was a good deal strewed over with small ironstone pebbles, not bronzed as they usually are, till. From Wordnik.com. [McKinlay's Journal of Exploration in the Interior of Australia] Reference
It is an ironstone tablet, once doubtless inlaid with brass, as the channellings for the metal are yet clearly defined. From Wordnik.com. [Virginia: the Old Dominion] Reference
He was struck by the fact that the bog lies directly on the limestone, as coal, ironstone, and limestone lie in parts of. From Wordnik.com. [Disturbed Ireland Being the Letters Written During the Winter of 1880-81.] Reference
Many of the ranges in our route consisted of masses of ironstone, apparently containing a very large proportion of metal. From Wordnik.com. [Journals of expeditions of discovery into Central Australia, and overland from Adelaide to King George's Sound, in the years 1840-1] Reference
A dense layer of caliche, ironstone, or rock will practically stop water flow, causing the soil above it to become saturated. From Wordnik.com. [5. How plants live and grow] Reference
The rocks at Wolgan Gap are a coarse sandstone stained almost black by an iron oxide derived from included bands of ironstone. From Wordnik.com. [Popular Science Monthly Oct, Nov, Dec, 1915 — Volume 86] Reference
It is very high, and is composed principally of igneous rock, with a little ironstone, much the same as the ranges down the country. From Wordnik.com. [The Journals of John McDouall Stuart] Reference
All day we went among little pointed hills, some, indeed many, marked with most curious veins of ironstone, sometimes in cross-bars. From Wordnik.com. [Southern Arabia] Reference
The bed, in most places, consisted of rock, the same ferruginous conglomerate, or clay ironstone, seen in the same river lower down. From Wordnik.com. [Journal of an Expedition into the Interior of Tropical Australia] Reference
Horizons with ironstone gravel have very low water-holding capacity (section 10.3.1) as do sandy, gravelly, or rocky soils in general. From Wordnik.com. [5. How plants live and grow] Reference
Fonio is usually grown on poor, sandy, or ironstone soils that are considered too infertile for pearl millet, sorghum, or other cereals. From Wordnik.com. [3. Fonio (Acha)] Reference
At ten miles and a half reached a stony rise, and changed my course to 76 degrees, for five miles, to a black hill composed of ironstone. From Wordnik.com. [The Journals of John McDouall Stuart] Reference
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