PREFACE 



This report describes results of the Inner Continental Shelf Sediment and 

 Structure (ICONS) study of Long Island. The primary objectives of the study 

 were to locate and delineate offshore sand and gravel deposits suitable for 

 beach nourishment and to provide information on the geologic character of Long 

 Island Sound. The work was carried out under the coastal processes program of 

 the U.S. Army Coastal Engineering Research Center (CERC). 



The report was prepared by S. Jeffress Williams, a CERC research geolo- 

 gist, under the general supervision of Dr. C.H. Everts, Chief, Engineering 

 Geology Branch. As part of the research program of the Engineering Develop- 

 ment Division, the ICONS study is under the general supervision of N. Parker, 

 Chief of the Division. The fieldwork (involving coring and continuous seismic 

 profiling) was accomplished under contract with Alpine Geophysical Associates, 

 Inc. 



Discussions with E.P. Meisburger (CERC) were helpful in preparation of the 

 study; final manuscript reviews by E.P. Meisburger and Dr. C.H. Everts were 

 appreciated. 



Microfilm copy of all seismic data is stored at the National Solar and 

 Terrestrial Geophysical Data Center (NSTGDC), Rockville, Maryland 20852. 

 Cores collected during the field survey program are in custody of the Univer- 

 sity of Texas, Arlington, Texas 76010, under agreement with CERC. Requests 

 for information relative to these items should be directed to NSTGDC or the 

 University of Texas. 



Comments on this publication are invited. 



Approved for publication in accordance with Public Law 166, 79th Congress, 

 approved 31 July 1945, as supplemented by Public Law 172, 88th Congress, 

 approved 7 November 1963. 



TED E. BISHOP 



Colonel, Corps o'f Engineers 



Commander and Director 



