alluvium
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Deposits of alluvium and volcanic ash have made desirable soil that is among the top 2% in the world.
From Seattle Times ● Jun. 16, 2023
Paved surfaces end miles from the rock outcrop, so we drive on overgrown rutted two-tracks that cross the loose sandy dune fields that show up on our geologic maps as “QAL”—Quaternary alluvium.
From Scientific American ● Dec. 15, 2020
Thus, a landscape architect I know savors the very smell of the dirt embedded in his botany texts; it is the alluvium of his life’s work.
From Slate ● Feb. 4, 2020
The island’s geology — a heart of granite in the west, compacted alluvium in the east — is such that most of it could be hollowed out.
From New York Times ● Apr. 20, 2017
The western side, which is of very recent formation, consists of a flat shore plain of coralline alluvium, mixed with decayed vegetable matter and loam brought down from the hill.
From In the Andamans and Nicobars The Narrative of a Cruise in the Schooner "Terrapin" by Kloss, C. Boden
But it is not often that borings come to be made in river alluvia.
From The Geological Story of the Isle of Wight by Hughes, J. Cecil
S., good sections of these old brecciated alluvia occur.
From Early Days in North Queensland by Palmer, Edward
They are probably contemporary with the older alluvia.
From The Project Gutenberg Encyclopedia Volume 1 of 28 by Project Gutenberg
Hence it was long and erroneously determined that bare rocks in the neighbourhood of shallow alluvia characterise rich placers, and that the wealthiest mining-regions are poor and stunted in vegetation.
From To The Gold Coast for Gold, Vol. II A Personal Narrative by Burton, Richard Francis, Sir
Near Orange, for instance, her favourite spots are the alluvia of the Aygues, with their carpets of smooth pebbles no longer visited by the waters.
From The Mason-Bees by Teixeira de Mattos, Alexander
There are great tracts of alluviums lying along the banks of the Derwent, the Ouse, and the Trent, and the Romney Marsh of Kent along the banks of the Thames.
From The New Gresham Encyclopedia. Vol. 1 Part 1 A to Amide by Various
The whole of them were at first confounded with the superficial alluviums of Europe; and it was long before their real extent and thickness, and the various ages to which they belong, were fully recognised.
From The Student's Elements of Geology by Lyell, Charles, Sir
Herculaneum was situated several miles nearer to the volcano, and has, therefore, been always more exposed to be covered, not only by showers of ashes, but by alluviums and streams of lava.
From Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology by Lyell, Charles, Sir
He pointed out with great clearness the resemblance of the tufaceous matter in the vaults and cellars at Herculaneum and Pompeii to aqueous alluviums, and its distinctness from ejections which had fallen through the air.
From Principles of Geology or, The Modern Changes of the Earth and its Inhabitants Considered as Illustrative of Geology by Lyell, Charles, Sir
Besides, the last operations of water have a tendency to disturb and confound together all pre-existing alluviums.
From The Student's Elements of Geology by Lyell, Charles, Sir
