Lambertville, Hunterdon Co., New Jersey, USA
|Latitude & Longitude (WGS84):||40° 21' 57'' North , 74° 56' 36'' West|
|Latitude & Longitude (decimal):||40.3658332824707, -74.9433364868164|
Ref.: NJ State Geol. Annual Rpt. (1893):433.
Mineral ListMineral list contains entries from the region specified including sub-localities
|Jurassic145 - 201.3 Ma||Jurassic plutonic: mafic rocks|
Plutonic: mafic rocks
|Early Jurassic - Late Triassic174.1 - 237 Ma||Passaic Formation gray bed|
Passaic Formation gray bed - Upper Triassic gray lake deposits (Trpg) consist of gray to black silty mudstone, gray and greenish- to purplish-gray argillaceous siltstone, black shale, and medium- to dark-gray, argillaceous, fine-grained sandstone and are abundant in the lower half of the Passaic Formation. Gray lakebeds occur in groups of two to five cycles although they also occur as single cycles in some parts of the formation. Several lakebed sequences consisting of one or two thick groups of drab-colored beds as much as 30 m (98 ft) thick or more can be traced over tens of kilometers. Many gray-bed sequences are locally correlated within fault blocks; some can be correlated across major faults or intrusive rock units. Thickness of the (entire Passaic) formation between Sourland Mountain and Sand Brook syncline is about 3,500 m (11,483 ft).
Part of the Brunswick Group. This unit's description is combined with JTRp (Passaic Formation) on the printed map. However, it is mapped seperately, so the description has been separated into two records. Also, this unit is called the 'gray bed' because that is what is used in the digital map.
|Triassic201.3 - 252.17 Ma||Triassic mixed volcanic, volcaniclastic and sedimentary rocks|
Mixed volcanic, volcaniclastic and sedimentary rocks
This designation includes Precambrian iron-formation-bearing sedimentary and volcanic sequences, as well as mixed sedimentary and volcanic or volcaniclastic sequences.
References for regional geology:
Data provided by Macrostrat.org
Garrity, C.P., and Soller, D.R.,. Database of the Geologic Map of North America: adapted from the map by J.C. Reed, Jr. and others (2005). U.S. Geological Survey Data Series 424 .
USGS compilers. State geologic map data. State Maps.
Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d.
12 valid minerals.