U.S. Geological Survey 2014 1.0 Open-File Report 2014-1227 Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program https://doi.org/10.3133/ofr20141227 https://pubs.usgs.gov/of/2014/1227/ofr2014-1227-data_catalog.html https://pubs.usgs.gov/of/2014/1227/data/7-Grain-SizeData/2008PR_grainsize.zip Shannon K. Hoy Jason D. Chaytor Uri S. ten Brink 2014 1.0 Open-File Report 2014-1227 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ofr20141227 In 2008, as a collaborative effort between Woods Hole Oceanographic Institution and the U.S. Geological Survey, 20 giant gravity cores were collected from areas surrounding Puerto Rico and the U.S. Virgin Islands. The regions sampled have had many large earthquake and landslide events, some of which are believed to have triggered tsunamis. The objective of this coring cruise, carried out aboard the National Oceanic and Atmospheric Administration research vessel Seward Johnson, was to determine the age of several substantial slope failures and seismite layers near Puerto Rico in an effort to map their temporal distribution. Data gathered from the cores collected in 2008 and 11 archive cores from the Lamont-Doherty Earth Observatory are included in this report. These data include lithologic logs, core summary sheets, x-ray fluorescence, wet-bulk density, magnetic susceptibility, grain-size analyses, radiographs, and radiocarbon age dates. To provide grain-size data for 16 cores collected during the USGS Field Activity 2008-008. The grain-size data are given in both XLS and CSV format. For more information on the USGS cruise, please see https://cmgds.marine.usgs.gov/fan_info.php?fan=2008-008-FA 20080318 20080324 ground condition; cores collected in 2008 Complete None planned -67.0795 -64.82283 19.17558 17.55293 USGS Metadata Identifier USGS:ded23753-0e05-4a2d-898b-e3bfdf70bf86 None U.S. Geological Survey USGS Woods Hole Coastal and Marine Science Center WHSC Coastal and Marine Geology Program CMGP cores gravity cores Cruise ID SJHN08008 WHSC field activity 2008-008-FA R/V Seward Johnson XLS spreadsheet CSV file grain-size ISO 19115 Topic Category oceans geoscientificInformation USGS Thesaurus drilling and coring grain-size analysis None Puerto Rico U.S. Virgin Islands Atlantic Caribbean Caribbean Sea Puerto Rico Trench Mona Passage Arecibo Amphitheater Loiza Amphitheater Whiting Basin Virgin Island Basin Anegada Passage None. The Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset. Jason D. Chaytor U.S. Geological Survey Research Geologist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 (508) 548-8700 x2351 (508) 457-2310 jchaytor@usgs.gov Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.4095 L.J. Poppe S.J. Williams V.F. Paskevich 2005 1.0 Open-File Report 2005-1001 Reston, VA U.S. Geological Survey https://pubs.usgs.gov/of/2005/1001/ Attributes were double checked that they related the correct interval data to name. Information unavailable from original metadata. These data represent all the cores that had grain size analyses performed. In total 198 grain-size analyses were performed on 16 cores. Some cores did not have intervals that warranted grain-size analysis. Analyses are available for cores 5, 7, 8, 9, 13, 17, 18, 20, 21, 22, 23, 24, 28, 31, 33, and 38. U.S. Geological Survey 2014 1.0 Open-File Report 2014-1227 Woods Hole Coastal and Marine Science Center, Woods Hole, MA U.S. Geological Survey, Coastal and Marine Geology Program https://pubs.usgs.gov/of/2014/1227/ physical samples 20080317 20080324 ground condition of core collection GGC The gravity cores collected during U.S. Geological Survey field activity 2008-008-FA. The Woods Hole Oceanographic Giant Gravity Corer (GGC) was used to collect the 20 cores in 2008. The gravity corer is a large diameter (10 centimeter) sampler that collects cores up to 6.5 meters in length. During field activity 2008-008-FA the corer was not rigged with liner longer than approximately 3 meters. Although cores were attempted at 40 core sites, core was recovered at only 20 sites. Seven additional sites yielded only samples (bagged) from the core catcher or cutting head. Of the 20 successful cores, three also have cutter/catcher bag samples. Each core was cut into sections on the ship after collection. The cores were then split into halves back onshore. This process step, and subsequent process steps were performed by the same person until otherwise noted. GGC 2008 Split_cores Jason D. Chaytor U.S. Geological Survey Research Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 (508) 548-8700 x2351 (508) 457-2310 jchaytor@usgs.gov Subsamples (1- cm thick) of 16 cores from the SJ8 cruise were taken at approximately 20-cm intervals for grain-size analysis. In sandy sediment, subsamples were taken more frequently. Additional subsamples (each 1.5 to 2 cm thick) were taken above or below turbidite and other event intervals for grain-size analysis and foraminifera assemblage and dating. Split_cores 2010 In total, 198 grain-size analyses were performed using the procedures outlined in Poppe and others (2005). The analyses were performed at the U.S. Geological Survey Woods Hole Coastal and Marine Science Center Sediment Laboratory. The data were given in XLS format. 2010 Data Kate McMullen U.S. Geological Survey Field and Laboratory Technician mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 (508) 548-8700 x2277 (508) 457-2310 kmcmullen@usgs.gov Grain-size data were compiled into one spreadsheet using Microsoft Excel 2010. Some fields were deleted that weren't pertinent to these samples. The spreadsheet was exported as a CSV and XLS table. Data 2013 Shannon K. Hoy U.S. Geological Survey Research Associate mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 (508) 548-8700 x2297 (508) 457-2310 shoy@usgs.gov Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Added additional online links in the Identification section. The source information was incomplete and had to be modified to meet the standard. Fixed a link to data in the entity and attribute overview section. Minor fixes to the attribute format for some attributes were needed. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. 20171003 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov USGS Thesaurus keywords added to the keyword section. 20180720 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200908 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Information unavailable from original metadata Information unavailable from original metadata Information unavailable from original metadata FIELD_NO Sample ID. Naming convention: SSS-CCCC-II (SSS= SHIP ID) (CCCC=Core ID, GGC stands for giant gravity corer) and (II=interval id) USGS character string PROJECT Project group ID- Caribbean Hazards USGS CARIBBEAN HAZARDS Id for USGS project USGS CRUISE_ID ID for the 2008 Seward Johnson Cruise (SJHN08008) USGS SJHN08008 Cruise ID for 2008 Seward Johnson Cruise USGS CONTACT Contact for samples = Jason D. Chaytor USGS JCHAYTOR Contact Jason D. Chaytor USGS AREA General area where samples were taken USGS CARIBBEAN offshore Puerto Rico and the U.S. Virgin Islands USGS LATITUDE Latitude of core that grain-size data came from USGS 17.552933 19.175583 Decimal Degrees LONGITUDE Longitude of core that grain-size analysis came from USGS -67.0795 -64.822833 Decimal Degrees DEPTH_M Water depth at location where core was collected USGS 1830 6945 Meters below sea level T_DEPTH Top of interval that was sampled for grain-size analysis USGS 0 225 centimeters B_DEPTH Bottom of interval being sampled for grain-size analysis USGS 1.5 226 centimeters DEVICE Device used to collect core USGS WHOI GIANT GRAVITY CORER type of corer used = WHOI giant gravity corer USGS MONTH_COLL Month that core was collected USGS 3 March USGS YEAR_COLL Year core was collected USGS 2008 2008 USGS MONTH_ANAL Month the sample was analyzed USGS 7 July USGS 9 September USGS 4 April USGS DAY_ANAL Day sample was analyzed USGS 28 28th of the month USGS 13 13th of the month USGS YEAR_ANAL Year sample was analyzed USGS 2010 2010 USGS WEIGHT Weight of dry sample in grams. USGS East Coast Sediment Texture Database data dictionary 12.6838 54.799 grams .0001 GRAVEL_PCT Gravel content in percent dry weight of the sample (particles with nominal diameters greater than 2 mm; -1 Phi and larger). USGS East Coast Sediment Texture Database data dictionary 0 4.72 percent .01 SAND_PCT Sand content in percent dry weight of the sample (particles with nominal diameters less than 2 mm, but greater than or equal to 0.0625 mm; 0 Phi through 4 Phi). USGS East Coast Sediment Texture Database data dictionary 0.02 97.86 percent .01 SILT_PCT Silt content in percent dry weight of the sample (particles with nominal diameters less than 0.0625 mm, but greater than or equal to 0.004 mm; 5 Phi through 8 Phi, inclusive). USGS East Coast Sediment Texture Database data dictionary 1.43 58.47 percent .01 CLAY_PCT Clay content in percent dry weight of the sample (particles with nominal diameters less than 0.004 mm; 9 Phi and smaller). USGS East Coast Sediment Texture Database data dictionary 0.7 80.72 percent .01 CLASSIFICATION Sediment description based on a rigorous definition, usually Shepard (1954) as modified by Schlee (1973) and Poppe and others ( 2005). USGS East Coast Sediment Texture Database data dictionary CLAY Sediment whose main phase is less than 0.004 mm. USGS East Coast Sediment Texture Database data dictionary CLAYEY SAND Sediment whose main phase is sand, but with significant clay. USGS East Coast Sediment Texture Database data dictionary CLAYEY SILT Sediment whose main phase is silt, but with significant clay. USGS East Coast Sediment Texture Database data dictionary SAND Sediment whose main phase is less than 2 mm, but greater than or equal to 0.062 mm. USGS East Coast Sediment Texture Database data dictionary SAND SILT CLAY Sediment with significant (over 20 percent) sand, silt, and clay USGS East Coast Sediment Texture Database data dictionary SANDY CLAY Sediment whose main phase is clay, but with significant sand. USGS East Coast Sediment Texture Database data dictionary SANDY SILT Sediment whose main phase is silt, but with significant sand. USGS East Coast Sediment Texture Database data dictionary SILTY CLAY Sediment whose main phase is clay, but with significant silt. USGS East Coast Sediment Texture Database data dictionary SILTY SAND Sediment whose main phase in sand, but with significant silt. USGS East Coast Sediment Texture Database data dictionary Median Middle point in the grain size distribution in phi units. USGS East Coast Sediment Texture Database data dictionary 1.72 9.22 phi .01 MEAN Average value in the grain size distribution in phi units. USGS East Coast Sediment Texture Database data dictionary 1.81 9 phi .01 STDEV Standard deviation (root mean square of the deviations) of the grain size distribution in phi units (sorting). USGS East Coast Sediment Texture Database data dictionary 1.08 3.56 phi .01 SKEWNESS Skewness (deviation from symmetrical form) of the grain size distribution in phi units. USGS East Coast Sediment Texture Database data dictionary -1.07 1.57 phi .01 KURTOSIS Kurtosis (degree of curvature near the mode) of the grain size distribution in phi units. USGS East Coast Sediment Texture Database data dictionary -1.69 18.82 phi .01 PHIm5 -5 Phi - Weight percent of the sample in the -5 Phi fraction and larger (nominal diameter of particles greater than or equal to 32 mm); very coarse pebbles, cobbles, and boulders. USGS East Coast Sediment Texture Database data dictionary 0 0 percent .01 PHIm4 -4 Phi - Weight percent of the sample in the -4 Phi fraction (nominal diameter of particles greater than or equal to 16 mm, but less than 32 mm); coarse pebbles. USGS East Coast Sediment Texture Database data dictionary 0 0 percent .01 PHIm3 -3 Phi - Weight percent of the sample in the -3 Phi fraction (nominal diameter of particles greater than or equal to 8 mm, but less than 16 mm); medium pebbles. USGS East Coast Sediment Texture Database data dictionary 0 0 percent .01 PHIm2 -2 Phi - Weight percent of the sample in the -2 Phi fraction (nominal diameter of particles greater than or equal to 4 mm, but less than 8 mm); fine pebbles. USGS East Coast Sediment Texture Database data dictionary 0 1.6 percent .01 PHIm1 -1 Phi - Weight percent of the sample in the -1 Phi fraction (nominal diameter of particles greater than or equal to 2 mm, but less than 4 mm); very fine pebbles (granules). USGS East Coast Sediment Texture Database data dictionary 0 3.29 percent .01 PHI_0 0 Phi - Weight percent of the sample in the 0 Phi fraction (nominal diameters of particles greater than or equal to 1 mm, but less than 2 mm); very coarse sand. USGS East Coast Sediment Texture Database data dictionary 0 4.69 percent .01 PHI_1 1 Phi - Weight percent of the sample in the 1 Phi fraction (nominal diameter of particles greater than or equal to 0.5 mm, but less than 1 mm); coarse sand. USGS East Coast Sediment Texture Database data dictionary 0 17.19 percent .01 PHI_2 2 Phi - Weight percent of the sample in the 2 Phi fraction (nominal diameter of particles greater than or equal to 0.25 mm, but less than 0.5 mm); medium sand. USGS East Coast Sediment Texture Database data dictionary 0 44.71 percent .01 PHI_3 3 Phi - Weight percent of the sample in the 3 Phi fraction (nominal diameter of particles greater than or equal to 0.125 mm, but less than 0.25 mm); fine sand. USGS East Coast Sediment Texture Database data dictionary 0 47.57 percent .01 PHI_4 4 Phi - Weight percent of the sample in the 4 Phi fraction (nominal diameters of particles greater than or equal to .0625 mm, but less than 0.125 mm); very fine sand. USGS East Coast Sediment Texture Database data dictionary 0.01 49.17 percent .01 PHI_5 5 Phi - Weight percent of the sample in the 5 Phi fraction (nominal diameter of particles greater than or equal to 0.031 mm, but less than 0.0625 mm); coarse silt. USGS East Coast Sediment Texture Database data dictionary 0.09 34.57 percent .01 PHI_6 6 Phi - Weight percent of the sample in the 6 Phi fraction (nominal diameter of particles greater than or equal to 0.016 mm, but less than 0.031 mm); medium silt. USGS East Coast Sediment Texture Database data dictionary 0.43 22.55 percent .01 PHI_7 7 Phi - Weight percent of the sample in the 7 Phi fraction (nominal diameter of particles greater than or equal to 0.008 mm, but less than 0.016 mm); fine silt. USGS East Coast Sediment Texture Database data dictionary 0.34 16.7 percent .01 PHI_8 8 Phi - Weight percent of the sample in the 8 Phi fraction (nominal diameter of particles greater than or equal to 0.004 mm, but less than 0.008 mm); very fine silt. USGS East Coast Sediment Texture Database data dictionary 0.24 18.09 percent .01 PHI_9 9 Phi - Weight percent of the sample in the 9 Phi fraction (nominal diameter of particles greater than or equal to 0.002 mm, but less than 0.004 mm); coarse clay. USGS East Coast Sediment Texture Database data dictionary 0.28 26.59 percent .01 PHI_10 10 Phi - Weight percent of the sample in the 10 Phi fraction (nominal diameter of particles greater than or equal to 0.001 mm, but less than 0.002 mm); medium clay. USGS East Coast Sediment Texture Database data dictionary 0.26 38.13 percent .01 PHI_11 11 Phi - Weight percent of the sample in the 11 Phi fraction and smaller (nominal diameter of particles less than 0.001 mm); fine clay. USGS East Coast Sediment Texture Database data dictionary 0.16 23.71 percent .01 ANALYST Name (usually first initial and last name) of person who performed the grain size or physical properties analysis USGS East Coast Sediment Texture Database data dictionary KMCMULLEN Kate McMullen U.S. Geological Survey These individual do have geospatial locations and are related to the core location available in the PRcore_locations shapefile available from https://pubs.usgs.gov/of/2014/1227/data/1-CoreLocations/PRcore_locations.zip U.S. Geological Survey Jason D. Chaytor U.S. Geological Survey Research Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 (508) 548-8700 x2351 (508) 457-2310 jchaytor@usgs.gov Downloadable Data Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. CSV Excel 2010 comma separated values The zip file (WinZip version18) contains a CSV file containing the same information as the Excel spreadsheet with the grain-size information, along with FGDC metadata. WinZip 0.058 https://pubs.usgs.gov/of/2014/1227/data/7-Grain-SizeData/2008PR_grainsize.zip XLS Excel 2010 MS Excel Format The zip file (WinZip version18) contains the individual radiograph TIFF images of intervals from each core x-rayed, an Excel 2010 spreadsheet containing the order and information for the images, and a CSV file containing the same information as the Excel spreadsheet, along with FGDC metadata. WinZip 0.058 https://pubs.usgs.gov/of/2014/1227/data/7-Grain-SizeData/2008PR_grainsize.zip None. The end user must be capable of uncompressing a zip file and read a XLS or CSV table. 20211116 U.S. Geological Survey Shannon Hoy mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 (508) 548-8700 x2297 (508) 457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS or the email is otherwise invalid. FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time