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Snake Meadow Hill, Westford, Middlesex Co., Massachusetts, USAi
Regional Level Types
Snake Meadow HillHill
Westford- not defined -
Middlesex Co.County
MassachusettsState
USACountry

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Latitude & Longitude (WGS84):
42° 36' 6'' North , 71° 28' 35'' West
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Westford21,587 (2017)4.0km
Littleton Common2,789 (2017)6.2km
Groton1,124 (2017)8.1km
Dunstable2,878 (2017)8.2km
Chelmsford33,925 (2017)8.9km


The first quarrying on Snake-Meadow Hill was done by Benjamin Palmer. He began by working the hill's massive granite boulders, then the stone hill itself.

Samuel Fletcher began quarrying the area in 1848. In 1853 William Reed began quarrying on the crest of the hill.

Graniteville Materials, founded in June 2010, currently operates on the south-eastern side of Snake Meadow Hill, supplying crushed aggregate products and recycled concrete throughout Massachusetts and southern New Hampshire.

Regions containing this locality

North America PlateTectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

5 valid minerals.

Detailed Mineral List:

'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).
'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
'Garnet Group'
Formula: X3Z2(SiO4)3
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).
'K Feldspar'
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).
Quartz
Formula: SiO2
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).
Rutile
Formula: TiO2
Reference: Dale, T. N. (1910). Supplementary Notes on the Commercial Granites of New England (in Contributions to Economic Geology, USGS Bulletin 470).

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Quartz4.DA.05SiO2
Rutile4.DB.05TiO2
Group 9 - Silicates
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Garnet Group'-X3Z2(SiO4)3
'K Feldspar'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Muscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Apatite'-Ca5(PO4)3(Cl/F/OH)
'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
'Garnet Group'-X3Z2(SiO4)3
'K Feldspar'-

List of minerals for each chemical element

HHydrogen
H MuscoviteKAl2(AlSi3O10)(OH)2
H BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H ApatiteCa5(PO4)3(Cl/F/OH)
OOxygen
O Garnet GroupX3Z2(SiO4)3
O RutileTiO2
O MuscoviteKAl2(AlSi3O10)(OH)2
O BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O MagnetiteFe2+Fe23+O4
O ApatiteCa5(PO4)3(Cl/F/OH)
O QuartzSiO2
FFluorine
F BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
F ApatiteCa5(PO4)3(Cl/F/OH)
MgMagnesium
Mg BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
AlAluminium
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Garnet GroupX3Z2(SiO4)3
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si QuartzSiO2
PPhosphorus
P ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Cl ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
CaCalcium
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Ti RutileTiO2
FeIron
Fe BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg)([Si/Al]Si2O10)(OH/F)2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe MagnetiteFe2+Fe23+O4

Regional Geology

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

Frasnian - Eifelian
372.2 - 393.3 Ma



ID: 2994409
Chelmsford Granite

Age: Devonian (372.2 - 393.3 Ma)

Stratigraphic Name: Chelmsford Granite

Description: Light-gray, even and medium-grained, muscovite-bearing granite; locally foliated; intrudes Sb.

Comments: Part of Merrimack Belt (Silurian, Devonian and Pennsylvanian Rocks). Secondary unit description per MA007 as reported in USGS Geologic Names lexicon (ref. MA024): Chelmsford Granite intrudes Berwick Formation, Ayer Granite, and Dracut Diorite northwest of Clinton-Newbury fault. Occurs as two elongate, northeast-striking bodies occupying an area of 60 sq km. Described as light colored and gneissic. Zartman and Naylor (1984) could not obtain a definitive age but believed Chelmsford was in same age range as Ayer because the age of the Chelmsford lay within margin of error for their age determinations. Devonian age shown on MA State geologic map is based on their Pb-Pb age of 389 +/-5 Ma (Wones and Goldsmith, 1991). Original map source: Unpublished Digital Geologic Map of Massachusetts received from Rudi Hon of Boston College in 1998; based on the 1983 USGS paper version (MA002).

Lithology: Major:{granite}

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. [133]

Neoproterozoic
541 - 1000 Ma



ID: 3187301
Neoproterozoic crystalline metamorphic rocks

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Amphibolite grade orthogneiss/paragneiss/metavolcanic gneiss

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. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hodgman, Rev. E.R. (1883) History of the Town of Westford, in the County of Middlesex, Massachusetts, 1659-1883.

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