>

USGS Home
Contact USGS
Search USGS

Sea-Floor Character and Sedimentary Processes of Great Round Shoal Channel, Offshore Massachusetts

Title | Introduction | Setting | Methods | Overview | Discussion | Interpretation | Data Catalog | Acknowledgments | References | Figures | Bottom Photographs | Sediment Data | Contacts

Bottom Photographs

Stations 1-18

Station  /   Lithologic Description

GRS-1  /   Rippled medium sand with sand waves, shell debris and gravel in troughs, loose seaweed and small crabs.
PICT0011	PICT0012	PICT0013	PICT0014
GRS-2  /   Rippled medium sand with numerous yellow sponges, and attached seaweed, shell debris, and a skate.
PICT0015	PICT0016	PICT0017	PICT0018
GRS-4  /   Rippled sand with scattered boulders and gravel patches. Skate, seaweed, sponges and abundant shell debris are present.
PICT0019	PICT0020	PICT0021	PICT0022
GRS-5   /   Rippled sand and sand waves; seaweed and shell hash concentrated in the troughs and sand dollars concentrated on the ripple crests.
PICT0137	PICT0032	PICT0033
GRS-6  /   Rippled sand with seaweed, gravel patches, and abundant shell debris.
PICT0028	PICT0029	PICT0030
GRS-8   /   Rippled sand with seaweed, large gravel patches, and some shell debris.
PICT0032	PICT0033	PICT0034	PICT0035
GRS-9  /   Rippled sand with sand waves and patchy shell debris. Shell debris concentrated in wave troughs.
PICT0036	PICT0037	PICT0038
GRS-10   /  Coarse, well-sorted, rippled sand with small sand waves (megaripples) and shell debris concentrated in wave troughs.
PICT0040	PICT0041	PICT0042
GRS-11  /   Megaripples with sandy rippled crests and shell hash, seaweed, and sand dollars..
PICT0135	PICT0136	PICT0137	PICT0138
PICT0139	PICT0140	PICT0141	PICT0142
GRS-12   /   Rippled and smooth sand with abundant shell debris, attached seaweed, and pea gravel.
PICT0043	PICT0044	PICT0045	PICT0046
GRS-13   /   Coarse sand with small ripples. Scattered shell debris, loose seaweed and sand dollars are present.
PICT0047	PICT0048	PICT0049	PICT0050
GRS-14   /   Rippled sand and megaripples with broad flat areas. Shell debris and pea gravel are concentrated in the bedform troughs.
PICT0130	PICT0131	PICT0132
PICT0133	PICT0134
GRS-15   /   Current-rippled sand. Shell debris and barnacle-covered gravel are concentrated in bedform troughs; sand dollars and attached hydrozoans and seaweed are present.
PICT0052	PICT0053	PICT0054	PICT0055
GRS-16   /   Rippled sand with scattered sand dollars, shell debris, and loose seaweed. Moon snail casings are present.
PICT0125	PICT0126	PICT0127
PICT0128	PICT0129
GRS-17   /   Rippled coarse sand and megaripples. Loose seaweed, shell hash, and dense patches of sand dollars are present.
PICT0122	PICT0123	PICT0124
GRS-18  /   Current rippled, coarse, well-sorted sand with traces of pea gravel and shell debris.
PICT0056	PICT0057	PICT0058

Title | Introduction | Setting | Methods | Overview | Discussion | Interpretation | Data Catalog | Acknowledgments | References | Figures | Bottom Photographs | Sediment Data | Contacts