National Geologic Map Database
General Information
- Title: Radiometric age (Late Ordovician) of the Quincy, Cape Ann and Peabody granites from eastern Massachusetts
- Author(s): Zartman, R.E., and Marvin, R.F.
- Publishing Organization: Geological Society of America
- Series and Number: Bulletin v.82, n.4 [p. 937]
- Publication Date: 1971
- Map Scale: 1:685,000
- Cross Section: None
- North Latitude: 42° 45' 0" N (42.7500)
- South Latitude: 42° 10' 0" N (42.1667)
- East Longitude: 70° 35' 0" W (-70.5833)
- West Longitude: 71° 15' 0" W (-71.2500)
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