History of Westchester county : New York, including Morrisania, Kings Bridge, and West Farms, which have been annexed to New York City / . neoiislythrough the whole length of the eastern border of thetownship. The prevailing rocks are an imperfect granite, anda gneiss varying much in stratification and boulders are everywhere to be found, some ofwhich are of great size. Most of them are fragmentsof our own rock-beds, while many are of foreign ma- terial, having found their way here during the drift Iperiod, of which they are not the only remainingevidence. The surface of most of
History of Westchester county : New York, including Morrisania, Kings Bridge, and West Farms, which have been annexed to New York City / . neoiislythrough the whole length of the eastern border of thetownship. The prevailing rocks are an imperfect granite, anda gneiss varying much in stratification and boulders are everywhere to be found, some ofwhich are of great size. Most of them are fragmentsof our own rock-beds, while many are of foreign ma- terial, having found their way here during the drift Iperiod, of which they are not the only remainingevidence. The surface of most of our rocks are wellpolished and furrowed by the same agency. There are several places in the town where thedolomitic limestone, which exists in several localities jlin Westchester County, crops out; but it is only ,quarried to any considerable extent on the New York . jState Prison grounds. It is a species of marble, andhears the name of the locality from w hich it is taken, ||as the Sing Sing, or Pleasantville, or Kastehester JI marble. It differs from common marble in being a , ,I bibasic mineral. Ordinary marble is a simple car- j.
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Keywords: ., bookcentury1800, bookdecade1880, bookidhistoryofwestche00scha0
