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  2. Aquia Creek sandstone - Wikipedia

    en.wikipedia.org/wiki/Aquia_Creek_sandstone

    Quarried at Aquia Creek in Stafford County, Virginia, the stone was valuable for its ease of shaping and the quarry's proximity to the tidewater portion of the Potomac River, 45 miles (72 km) south of Washington. The sandstone was the principal material used in such significant buildings as the White House and the early stages of the U.S ...

  3. Public Quarry at Government Island - Wikipedia

    en.wikipedia.org/wiki/Public_Quarry_at...

    The property was acquired by Stafford County as a county park and opened to the public on November 6, 2010 with trails and markers highlighting the historical significance of the island. The park has 1.5 miles of trails including an elevated wooden boardwalk through marsh and wetlands, part of the park is handicap accessible.

  4. Trap rock - Wikipedia

    en.wikipedia.org/wiki/Trap_rock

    The East Rock trap rock ridge overlooking New Haven, Connecticut, U.S. Trap rock forming a characteristic pavement, Giant's Causeway, Northern Ireland Trap rock cliff overlooking the Hudson River from an overlook on the Hudson Palisades in Bergen County, New Jersey, U.S. Trap rock forming a characteristic stockade wall, Giant's Causeway, Northern Ireland

  5. Fairfax Stone Historical Monument State Park - Wikipedia

    en.wikipedia.org/wiki/Fairfax_Stone_Historical...

    The stone was still intact in 1859 when one Lieutenant Melcher found it again and reran the "Fairfax Line" on behalf of the two states. The Stone was gone by 1909, however, having been carried away by vandals. [10] There have been six Fairfax Stones, each one replacing the last owing to weathering or vandalism.

  6. Sunnyside (Tarrytown, New York) - Wikipedia

    en.wikipedia.org/wiki/Sunnyside_(Tarrytown,_New...

    Sunnyside (1835) is a historic house on 10 acres (4 ha) along the Hudson River, in Tarrytown, New York.It was the home of the American author Washington Irving, best known for his short stories, such as "Rip Van Winkle" (1819) and "The Legend of Sleepy Hollow" (1820).

  7. Geology of Virginia - Wikipedia

    en.wikipedia.org/wiki/Geology_of_Virginia

    Top of Stonyman Summit, Shenandoah National Park The geology of Virginia began to form at least 1.8 billion years ago. The oldest rocks in the state were metamorphosed during the Grenville orogeny, a mountain-building event beginning 1.2 billion years ago in the Proterozoic, which obscured older rocks.

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Seneca Quarry - Wikipedia

    en.wikipedia.org/wiki/Seneca_Quarry

    The quarry was the source of stone for two Potomac River canals: the Patowmack Canal (opened in 1802, and officially known as the Great Falls Skirting Canal) on the Virginia side of Great Falls; and the C&O Canal, having supplied red sandstone for the latter for locks 9, 11, 15 - 27, and 30, the accompanying lock houses, and Aqueduct No. 1 ...