Branford, New Haven Co., Connecticut, USA
|Latitude & Longitude (WGS84):||41° 16' 46'' North , 72° 48' 54'' West|
|Latitude & Longitude (decimal):||41.27944,-72.81500|
|Köppen climate type:||Cfa : Humid subtropical climate|
A populated place (town).
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded from this region.
Mineral ListMineral list contains entries from the region specified including sub-localities
17 valid minerals.
Rock Types Recorded
Rock list contains entries from the region specified including sub-localities
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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
541 - 1000 Ma
|Waterford Group and Branford Gneiss|
Age: Neoproterozoic (541 - 1000 Ma)
Description: Waterford Group (may be equivalent in part to Monson Gneiss) - Interlayered part (but layers locally distinct) of Waterford Group, light to dark, generally medium grained gneiss, composed of plagioclase, quartz, and biotite, with hornblende in some layers and microcline in others. Some layers of amphibolite. Branford Gneiss - Gray to white but rarely pink., medium-grained, well-foliated granitic gneiss, composed of oligoclase, K-feldspar, quartz, biotite, garnet, magnetite, and muscovite.
Comments: Part of Eastern Uplands; Avalonian (Continental) Terrane; Avalonian Anticlinorium; Branford Gneiss only = East Haven granitic body (may be equivalent to Sterling Plutonic-Group) (includes Light House Gneiss, Branford Gneiss, and Stony Creek Granite Gneiss) (Proterozoic Z?). Printed map has unit Zb by itself, digital map combines Zb with Zw.
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.