Shuttle Meadow Formation (CTJsm;0)

Shuttle Meadow Formation

Maroon to dark-gray, silty shale, siltstone, and fine-grained silty sandstone, generally well and thinly laminated. In the southern part of the State includes a layer, up to 5 m thick, of blue, commonly sandy, fine-grained limestone or dolomitic limestone, grading laterally into calcareous siltstone. Coarser and more arkosic to east and south, grading into conglomerate near the eastern border fault.

State	Connecticut
Name	Shuttle Meadow Formation
Geologic age	Lower Jurassic
Lithologic constituents	Major Sedimentary > Clastic > Mudstone > Shalesilty shale Minor Sedimentary > Clastic > Sandstone (Arkosic)fine-grained silty sandstone, coarser and more arkosic to east and south Sedimentary > Clastic > Siltstone (Calcareous)siltstone, calcareous siltstone Incidental Sedimentary > Clastic > Conglomerate (Arkosic)Coarser and more arkosic to east and south, grading into conglomerate near the eastern border fault. Sedimentary > Carbonate > LimestoneIn the southern part of the State includes a layer, up to 5 m thick, of blue, commonly sandy, fine-grained limestone or dolomitic limestone.
Comments	Part of Central Lowlands; Newark Terrane - Hartford and Pomperaug Mesozoic Basins. Part of Newark Supergroup (Upper Triassic and Lower Jurassic). Part of ""Meriden Formation"" of Krynine (1950) (Lower Jurassic); CT005.
References	Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000. Krynine, P.D., 1950, Petrology, stratigraphy, and origin of the Triassic sedimentary rocks of Connecticut: Conn. Geol. Nat. History Survey Bull. 73, 239 p.
NGMDB product	NGMDB product page for 54245
Counties	Hartford - Litchfield - Middlesex - New Haven

Shuttle Meadow Formation

Rodgers, John, compiler, 1985, Bedrock Geological Map of Connecticut: Connecticut Geological and Natural History Survey, Hartford, Connecticut, 2 sheets, scale 1:125,000.

Krynine, P.D., 1950, Petrology, stratigraphy, and origin of the Triassic sedimentary rocks of Connecticut: Conn. Geol. Nat. History Survey Bull. 73, 239 p.