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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 19-39

Station Lithologic Description

GRS-19   /   Current rippled coarse well-sorted sand with scattered shell debris concentrated in ripple troughs.
PICT0059	PICT0060	PICT0061
GRS-21   /   Current rippled medium to coarse moderately well-sorted sand with megaripples and abundant sand dollars; shark and traces of loose seaweed are present.
PICT0119	PICT0120	PICT0121
GRS-22  /   Rippled sand with sand waves and megaripples. Scattered sand dollars are present, shell debris is concentrated in bedform.
PICT0115	PICT0116	PICT0117
GRS-24  /   Rippled clean well-sorted sand with traces of shell debris. Moon snail casings and sand dollars are present.
PICT0064	PICT0064	PICT0065	PICT0066
GRS-25   /   Rippled clean medium-coarse sand and sand waves with abundant sand dollars. A few skate, hermit crabs, and barnacle-covered pieces of gravel are present.
PICT0067	PICT0068	PICT0069
GRS-26   /   Rippled clean medium-coarse sand with sand waves. Sand dollars are concentrated on bedform crests; shell debris is concentrated in the troughs.
PICT0112	PICT0113	PICT0114
GRS-27  /   Rippled sand with sand waves and megaripples and scattered shell debris.
PICT0070	PICT0071	PICT0072	PICT0073
GRS-28   /   Rippled coarse sand with scattered and patchy shell debris. Loose drifting seaweed and a skate are present.
PICT0146	PICT0147	PICT0148
GRS-31  /   Rippled sand with megaripples. Moon snail casings and loose organic debris and shell hash are concentrated in the ripple troughs.
PICT0076	PICT0077	PICT0078
GRS-32   /   Boulders covered by dense mussel beds. Starfish and crabs are abundant; sharks and sponges are present.
PICT0105	PICT0106	PICT0107	PICT0108
PICT0109	PICT0110	PICT0111
GRS-34   /   Dense patches of mussels. Faintly rippled patches of sand are present between the patches of mussels; uneven sea floor may be sand waves. Sponges, skate, and abundant shell debris are present.
PICT0102	PICT0103	PICT0104
GRS-35  /   Rippled and megarippled gravelly sand. Gravel is often covered by barnacles and seaweed; dogfish, skate, sand dollars, mussel shells, snail, and pink coralline algae are present.
PICT0096	PICT0097	PICT0098	PICT0099
PICT0100	PICT0101
GRS-36   /   Rippled and megarippled coarse sand and fine gravel with scattered sand dollars. Shell debris (quohog shells) is scattered and patchy, but mostly concentrated in the troughs of bedforms.
PICT0079	PICT0080	PICT0081
GRS-37  /   Coarse sand with some gravel and shell debris. Scattered cobbles are covered with barnacles and seaweed. Sand dollars and sea robin are present.
PICT0091	PICT0092	PICT0093	PICT0094
GRS-38   /   Coarse sand with abundant sand dollars and some gravel and shell debris. Scattered pieces of gravel are covered with barnacles and seaweed.
PICT0083	PICT0084	PICT0085
PICT0086	PICT0087
GRS-39  /   Rippled sand with mussel shells, attached seaweed, and some gravel.
PICT0088	PICT0089	PICT0090

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