Open-File Report 2002-002

Characteristics of sand and gravel deposits

Designation	Core No.	Water Depths (m)	Thickness (m)	Mean grain size (mm)	Est. Volume (Million m3)	REMARKS
A	31	11 to 14	2.7	0.25 to 0.27	1	Deposit consists of two irregular ridges off Matinicock Point
B	36	8 to 18	4.3	0.60 to 0.90	6	Shoal about 6.4 km S. of Stamford is glacial till on a bedrock high
C	7A	7 to 18	3.1	0.50 to 0.90	4	Cable and Anchor Reef S. of Norwalk Islands is glaciofluvial sediment on a bedrock high
D	26, 26B, 38	6 to 18	2.7	0.50 to 1.20	7	Shoal off Eatons Neck is composed of Pleistocene sands
E	9	12 to 20	3.9	0.34 to 1.10	4	Shoal about 5km SE. of Norwalk Islands consists of steeply dipping forset strata
F	12 to 15, 49, 53A, 54	6 to 12	3.9	0.28 to 0.62	37	Shoal off Bridgeport is a glaciofluvial delta with steeply dipping forset strata
G	21	6 to 15	3.3	0.25 to 1.00	5	Shoal off Crane Neck is composed of Pleistocene sands
H	78	6 to 15	2.7	0.61 to 0.89	5	Deposit consists of glaciofluvial sands
I	57	8 to 9	3.7	0.31 to 1.10	10	Shoal S. of Milford overlies the buried ancestral Quinnipiac River channel
J	76	6 to 17	3.5	0.47 to 0.99	7	Shoal is well stratified with forset strata
K	58A	6 to 9	2.1	0.43 to 0.48	3	Townshend Ledge is composed of glaciofluvial sediment on a bedrock high
L	75	6 to 18	3.8	-----------1	40	Shoal has forset strata prograding west
M	72, 74	6 to 17	2.7	0.34 to 0.79	54	Shoal consists of Pleistocene glaciofluvial sands; sand waves with 5-m relief are present
N	64 to 67A	2 to 6	2.7	0.43 to 0.84	6	Long Sand Shoal is composed of stratified glaciofluvial and estuarine sands overlying bedrock

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