Annual report . O THE GEOLOGY OF THE SYRACUSE QUADRANGLE 45 supply of water as the strata differ in porosity, but none of thestrata in the area are exceptionally good aquifers so that the supplyof water from many of the wells is limited, yet for the most partsufficient for household and farm purposes. Deep wells in the middle portions of Onondaga valley will getsalt water similar to that in the wells at the east end of Onondagalake. THE PERIDOTITE DIKES OF SYRACUSE AND VICINITY * There are several localities in central New York in which dikesof basic rock cut through the Paleozoic sedimentarie


Annual report . O THE GEOLOGY OF THE SYRACUSE QUADRANGLE 45 supply of water as the strata differ in porosity, but none of thestrata in the area are exceptionally good aquifers so that the supplyof water from many of the wells is limited, yet for the most partsufficient for household and farm purposes. Deep wells in the middle portions of Onondaga valley will getsalt water similar to that in the wells at the east end of Onondagalake. THE PERIDOTITE DIKES OF SYRACUSE AND VICINITY * There are several localities in central New York in which dikesof basic rock cut through the Paleozoic sedimentaries. There issuch a dike in the city of Syracuse, one at the Dewitt reservoir, 3miles east of the city, another near Otisco lake, some 15 miles south-west of the city. Other dikes somewhat similar to these are knownto occur near Itahaca farther to the southwest and at Manheimfarther to the east. The occurrence of these dikes in the midst of the great area ofPaleozoic sediments far removed from any volcanic or bath


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Keywords: ., bookcentury1900, bookdecade1900, booksubjectscience, bookyear1902