brownstone


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brownstone,

red to brown variety of sandstonesandstone,
sedimentary rock formed by the cementing together of grains of sand. The usual cementing material in sandstone is calcium carbonate, iron oxides, or silica, and the hardness of sandstone varies according to the character of the cementing material; quartz sandstones
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. Its unusual color is caused in some instances by the presence of red iron oxide which acts as a cement, binding the sand grains together. Vast thicknesses (up to 20,000 ft/6,096 m) of brownstone were deposited in the present-day Connecticut River Valley of Massachusetts and Connecticut and in central New Jersey during the latter part of the Triassic periodTriassic period
, first period of the Mesozoic era of geologic time (see Geologic Timescale, table) from 205 to 250 million years ago.

Throughout the Triassic, E North America, as a result of the mountain-building episode that formed the Appalachians in the late Paleozoic
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. Quarries in these regions were the source for much of the building stone used in the late 19th and early 20th cent. in the construction of the many brownstone houses found from Baltimore to Boston; the stone, however, is not very durable, especially if poorly laid or maintained. Similar, but more brightly colored, sandstones also were deposited in the Rocky Mt. region during the Triassic period and Jurassic periodJurassic period
[from the Jura Mts.], second period of the Mesozoic era of geologic time, lasting from 213 to 144 million years ago. At the start of the Jurassic most of the continents were joined together until the Atlantic began to form and the Americas split off from Africa.
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. These deposits are called "redbeds" and make up the colorful landscapes of the Painted Desert of Arizona.

brownstone

A dark brown or reddish-brown sandstone, used extensively for building in the United States during the middle and late 19th century. See also: Stone

brownstone

[′brau̇n‚stōn]
(petrology)
Ferruginous sandstone with its grains coated with iron oxide.

brownstone

1. A dark brown or reddish brown arkosic sandstone, quarried and used extensively for building in the eastern US during the middle and late nineteenth cent.
2. A dwelling faced with brownstone, often a row house.
References in periodicals archive ?
Spanish Harlem, located on Manhattan's Upper East Side, is known for its turn-of-last-century brownstones. Many are undergoing renovation, and Mensch Mill and Lumber is the community's source for building materials and hardware.
Brownstone Investment is a fixed income investment firm.
Each partner walked away from the event with professional photos, a video, dozens of new customers, combined ticket and merchandise sales in excess of $25,000, and enough positive buzz in and around the community to continue driving customers to The Brownstone through the harrowing months to come.
"The Brownstone product has been modelled to encourage buyers and tenants to stay.
The deal effectively ends Brownstone's long tenure as a newsletter publisher.
The cafe occupies a side of the courtyard, and a new restaurant and museum store are comfortably accommodated on the ground floor of the brownstone.
All five of the boroughs comprising "The Big Apple" are represented both in terms of their downtown and uptown landmarks, as well as the brownstone neighborhoods.
MODERN INCARNATIONS OF the Northeastern brownstone are popping up in unlikely markets faster than mushrooms after a downpour.
(Marblehead, MA), a provider of information, education, training and consulting products and services for the healthcare regulation and compliance markets, has acquired 15 healthcare publications from Brownstone Publishers, Inc.
sold 150 acres of what had been part of the Brownstone Development to Glass Investments LLC for $5.7 million in September.
Funny thing about the Brownstone Cafe at 510 Central Ave.
The roomy Brownstone Town Homes feature two bedrooms, plus a convertible room for office, library or media uses.