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Official US State Symbols
Beans, Berry, Beverage, Bird, Building & Monument Stone, Cat, Ceremonial March, Children's Author and Illustrator, Children's Book, Citizenry, Cookie, Dessert, Dog, Donut, Explorer Rock, Fish, Flag, Flower or Floral Emblem, Folk Dance, Folk Hero, Folk Song, Fossil, Fruit, Game Bird, Gem, Glee Club Song, Heroine, Historical Rock, Horse, Insect, Marine Mammal, Mineral, Motto, Muffin, Nicknames, Ode of the Commonwealth, Patriotic Song, Poem, Polka, Rock, Seal, Shell, Soil, Song, Tree, Veterans of Southwest, Asia War Monument, Vietnam War Memorial
Massachusetts State Rock
Adopted in 1983.
The Roxbury Puddingstone, sometimes called Roxbury Conglomerate, became the state rock in 1983.
Roxbury Puddingstone, which is found only in the Boston Basin. The
Roxbury Conglomerate (or "puddingstone" as it is often called, due to its
resemblance to an old fashioned fruit-filled pudding), is an ancient river
gravel which has been cemented into a hard rock by natural mineralization.
The gravel was laid down in the beds of rivers hundreds of years ago. The
individual round pebbles, which can still be seen, represent the various
types of rock that existed in the area at that time. These include volcanic
rocks, granite and quartzite. Over time the accumulation of younger deposits
on top of the gravel eventually bonded the gravel together in the same
manner as cement hardens to form concrete.
State symbols represent things that are special to a particular state.
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