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


Skip past contents informationTitle | 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.
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PICT0059
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PICT0060
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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.
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PICT0119
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PICT0120
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PICT0121



  


GRS-22  /   Rippled sand with sand waves and megaripples. Scattered sand dollars are present, shell debris is concentrated in bedform.
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PICT0115
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PICT0116
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PICT0117



  
GRS-24  /   Rippled clean well-sorted sand with traces of shell debris. Moon snail casings and sand dollars are present.
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PICT0064
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PICT0064
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PICT0065



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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.
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PICT0067
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PICT0068
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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.
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PICT0112
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PICT0113



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PICT0114



  
GRS-27  /   Rippled sand with sand waves and megaripples and scattered shell debris.
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PICT0070
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PICT0071
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PICT0072
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PICT0073



GRS-28   /   Rippled coarse sand with scattered and patchy shell debris. Loose drifting seaweed and a skate are present.
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PICT0146
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PICT0147
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PICT0148



  
GRS-31  /   Rippled sand with megaripples. Moon snail casings and loose organic debris and shell hash are concentrated in the ripple troughs.
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PICT0076
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PICT0077
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PICT0078



  


GRS-32   /   Boulders covered by dense mussel beds. Starfish and crabs are abundant; sharks and sponges are present.
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PICT0105
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PICT0106
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PICT0107
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PICT0108
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PICT0109



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PICT0110



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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.
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PICT0102
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PICT0103
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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.
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PICT0096
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PICT0097
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PICT0098
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PICT0099
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PICT0100
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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.
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PICT0079
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PICT0080
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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.
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PICT0091
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PICT0092
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PICT0093
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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.
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PICT0083
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PICT0084
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PICT0085
    
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PICT0086
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PICT0087



         
GRS-39  /   Rippled sand with mussel shells, attached seaweed, and some gravel.
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PICT0088
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PICT0089
Images of bottom photo.
PICT0090
  

Skip past contents informationTitle | Introduction | Setting | Methods | Overview | Discussion | Interpretation | Data Catalog | Acknowledgments | References | Figures | Bottom Photographs | Sediment Data | Contacts

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