|Latitude & Longitude (WGS84):||42° 20' 45'' North , 71° 33' 10'' West|
|Latitude & Longitude (decimal):||42.34583,-71.55278|
|Köppen climate type:||Dfb : Warm-summer humid continental climate|
Marlborough is a town, incorporated in 1660.
Mineral ListMineral list contains entries from the region specified including sub-localities
43 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Devonian - Silurian|
358.9 - 443.8 Ma
|Paleozoic sedimentary and volcanic rocks|
Age: Paleozoic (358.9 - 443.8 Ma)
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. 
|Ordovician - Neoproterozoic|
443.8 - 1000 Ma
Stratigraphic Name: Marlboro Formation
Comments: Part of Nashoba Zone (Silurian and Older Rocks). Fish Brook Gneiss of the Nashoba terrane has been dated by G.R. Dunning at 520+14-11 Ma. This not only establishes a Cambrian age for this unit, but constrains the age of the overlying Marlboro and Nashoba Formations to the interval between 520 Ma and 430 Ma, the age of the cross-cutting Sharpners Pond Diorite. No Precambrian rocks, therefore, are known from the Nashoba terrane (Hepburn, and others, 1993) per MA018.
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. 
Localities in this RegionShow map
- Middlesex Co.