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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. Throughout the Proterozoic and Paleozoic , Virginia experienced igneous intrusions, carbonate and sandstone deposition, and a series of other mountain-building ...
The oldest reliably dated rock art in the Americas is known as the "Horny Little Man." It is petroglyph depicting a stick figure with an oversized phallus and carved in Lapa do Santo , a cave in central-eastern Brazil and dates from 12,000 to 9,000 years ago.
Big and Little Petroglyph Canyons; Black Mountain Rock Art District; Chalfant Petroglyph Site; Chumash Indian Museum; Coso Rock Art District; Hemet Maze Stone; Meadow Lake Petroglyphs; Painted Rock (San Luis Obispo County, California) Petroglyph Point Archeological Site; Ring Mountain (California) Yellow Jacket Petroglyphs
Previously, the oldest carvings in North America were thought to be those estimated to be 7,300 years old found at Long Lake, in Oregon. [18] The rocks include both simple petroglyphs such as straight lines and swirls and more complex petroglyphs that resemble trees, flowers, or the veins of a leaf.
The geologic column in Virginia begins at the Cambrian and spans to the Quaternary. [2] Although present, the state's Cambrian rocks preserve very few fossils and no documented individual deposit has proven a fertile collecting ground. [3] The state was covered by a warm shallow sea at the time. [1]
The Lagomarsino Petroglyph Site is a 65-acre (26 ha) archeological site of petroglyphs, located in Storey County, Nevada near Virginia City. It was listed for its potential to yield information in the future and includes one contributing site with approximately 2000 items. [1] Lagomarsino Petroglyph Site, showing a few petroglyphs up close.
[8]:79,80 Both schools of petroglyphs are thought to date to the late Bronze Age. [7] [8]:19. Sketch of a detail of an engraved rock panel showing a semi-human figure holding a rattle. The depiction of these rattles in the Malmontagne petroglyphs provides one basis, among several, for their dating to the late Bronze Age.
In 1687, Martin Lister published a drawing of C. jeffersonius, making it the first North American fossil to be illustrated in scientific literature. [2]In 1824, geologist John Finch gathered a large collection of mollusk fossils, including Chesapecten jeffersonius, from the vicinity of Yorktown, Virginia, and gave them to scientists at the Academy of Natural Sciences of Philadelphia (ANSP).