Shannon A. Mahan Emma T. Krolczyk Megan Gillen 20260205 CSV Denver, CO U.S. Geological Survey https://doi.org/10.5066/P1S5DPZU https://www.sciencebase.gov/catalog/item/6940774ed4be025097bc8cab These Holocene aged samples are from three sediment cores obtained near the Provincetown Hook spit in Cape Cod, Massachusetts. The goal of the geochronology work is to determine when shoreface sediments, which represent the oceanward extent of the spit, were present at the surface for the Provincetown Hook. Results from this work support efforts to publish more recent sedimentological and geochronological data from outer Cape Cod. There were five cores that were sampled for optically stimulated luminescence (OSL; PH04-D08, PH06-D05, PH06-D09, PH08-D04, and PH10-D05). The initial sampling was done at Woods Hole Oceanographic Institute (WHOI) in order to optimize core access and storage. A total of 16 samples from these five cores (PH04 n=3 samples, PH06 n=5 samples, PH08 n= 4 samples, and PH10 n=4 samples) was brought for further refinement to the USGS Luminescence Geochronology Lab in Denver, CO. The goal of the geochronology work was to provide OSL ages that will assist work to understand geomorphic change of the Provincetown Hook. Results from this work support efforts to publish more recent sedimentological and geochronological data from outer Cape Cod. The ages will be used to calibrate an age-depth model to correlate sediment characteristics at depth in the collected grain size cores to geologic time and infer the timing of the shoreface depositional environment in our sediment cores by matching ages with coarser-grained facies. 2023 ground condition Complete None planned -70.226500 -70.114500 42.062090 42.060990 ISO 19115 Topic Category oceans USGS Thesaurus luminescence dating optically-stimulated luminescence age estimation methods geochronology radiation dosimetry USGS Metadata Identifier USGS:6940774ed4be025097bc8cab USGS Thesuarus Cape Cod, Massachusetts Provincetown Hook Provincetown Harbor Cape Cod Bay Provincetown, MA None. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Shannon A Mahan U.S. Geological Survey, ROCKY MOUNTAIN REGION Research Geologist mailing address

Mail Stop 963, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-7928 303-236-5556 smahan@usgs.gov MIT-WHOI Joint Program, NSF-EAR, AGeS No formal attribute accuracy tests were conducted. Map elements and topography were checked if needed. Again, no formal logical accuracy tested were conducted. Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. 0.1000 0.1000 All samples were prepared for dating using standard procedures of Mahan et al. (2015) and Nelson et al. (2015) at the USGS luminescence lab in Denver, Colorado. Subsamples for equivalent dose (DE) measurements (i.e. natural luminescence accumulations) were obtained from the center of the core tubes. The end portion of the sample tubes (∼3-4 cm) were used for moisture and elemental concentrations. These sub samples were dried in an oven at 30o C, homogenized, packaged, and analyzed at the USGS Gamma Spectrometry facility to determine radioisotope concentrations for the dose rate. The middle part of the tube sample was sieved to 90-250 microns, leached in 10% HCl for 24 hours, and then in 30% H2O2 for 24 hours. The 90-250 micron quartz and feldspar fractions were separated from magnetic and heavy minerals using a Franz magnetic separator and heavy liquids (lithium sodium polytungstate or LST; density=2.58 gcm-3 for feldspar). Feldspar grains were lightly etched in 10% HF for 5 minutes, rinsed, dried and then measured for luminescence. A single grain thick layer of refined feldspar grains (~50-150 grains) was dispersed onto steel discs pre-prepared with a 1 mm “mask” of silica spray. About 15-40 aliquots were measured to ensure reliable statistical trends (Rodnight, 2008). The dose rate was obtained through elemental data analyses. The concentrations of K, U, and Th were determined using gamma spectrometry following the procedures described in Snyder and Duval (2003). The gamma-ray spectrometer provides the isotopic discrimination of gamma rays; correspondingly, beta and alpha dose rates may be estimated. In the laboratory, the bulk samples were counted in a low-resolution gamma spectrometer fitted with a germanium detector. Measured elemental concentrations, associated dose rates, and cosmic ray contributions are presented in Table 3. Cosmic-ray dose rate data was estimated for each sample as a function of depth, elevation above sea level, and geomagnetic latitude and added to the total dose rate (Prescott and Hutton, 1994). 2023 0.00001 0.00001 Decimal degrees North American Datum of 1983 (NAD 83) Geodetic Reference System 1980 6378137.000000 298.257222 Table Name,Field Name,Description,Units,Valid Values or Range CapeCod_Data,Sample_ID,Collector's sample name,n/a,n/a CapeCod_Data,Unique_ID,Unique identifier for IWP database.,n/a,n/a CapeCod_Data,Data_Source_ID,Unique identifier of citation where data are published.,n/a,n/a CapeCod_Data,Parent_ID,Unique identifier of parent - 'sample_id',n/a,n/a CapeCod_Data,Parent_Rel,"Relationship to parent, e.g., sample X from parent_id soil profile",n/a,n/a CapeCod_Data,Lum_ID,Unique identifier for analysis from analyzing laboratory,n/a,n/a CapeCod_Data,Laboratory,Name of Laboratory producing the age,n/a,n/a CapeCod_Data,Quad,Quadrangle that the sample was collected from,n/a,n/a CapeCod_Data,Latitude,Latitude of sample,Degrees,42.06099 to 42.06209 CapeCod_Data,Longitude,Longitude of sample ,Degrees,-70.2265 to -70.1145 CapeCod_Data,Elevation(m),Elevation of sample in meters above sea level,Meters,2 to 7 CapeCod_Data,Depth(cm),Depth of sample below modern surface in cm,Centimeters,3 to 28 CapeCod_Data,Field_Moisture(Percent),The water content in weight percent of the sample as initially extracted from the sample container,Percentage,5 CapeCod_Data,Saturation_Moisture(Percent),The water content in weight percent of the sample after the sample has been saturated with water,Percentage,25 CapeCod_Data,K_Percent,The weight percent of potassium as measured by ICP-MS or Gamma spectrometry,Percentage,0.22 to 0.8 CapeCod_Data,K_Percent_Error,The uncertainty (in weight percent) of the potassium weight percent,Percentage,0.004 to 0.016 CapeCod_Data,U_ppm,The concentration of uranium in parts per million (ppm) as measured by ICP-MS or Gamma spectrometry,Parts per million,0.3 to 3.85 CapeCod_Data,U_ppm_Error,The uncertainty (in ppm) of the uranium concentration,Parts per million,0.015 to 0.19 CapeCod_Data,Th_ppm,The concentration of thorium in parts per million (ppm) as measured by ICP-MS or Gamma spectrometry,Parts per million,1 to 9.5 CapeCod_Data,Th_ppm_Error,The uncertainty (in ppm) of the thorium concentration,Parts per million,0.03 to 0.28 CapeCod_Data,Rb_ppm,Rubidium concentration in sample in parts per million,Parts per million,n/a CapeCod_Data,Rb_ppm_Error,Rubidium concentration uncertainty in parts per million,Parts per million,n/a CapeCod_Data,Cosmic_Dose_Rate(Gy/ka),The contribution of cosmic radiation to the background ionizing dose rate calculated by DRAC (in Gray/ka),Gray/ka,n/a CapeCod_Data,Cosmic_Dose_rate_Error,The uncertainty in the cosmic dose rate (in Gray/ka),Gray/ka,n/a CapeCod_Data,Total_Dose_Rate_Quartz,Luminescence dose rate in Grays per thousand years (quartz),Gray/ka,0.21 to 1.58 CapeCod_Data,Total_Dose_Rate_Quartz_Error,1 sigma uncertainty in equivalent dose for in Grays (quartz),Gray,0.01 to 0.05 CapeCod_Data,Total_Dose_Rate_Feldspar,Luminescence dose rate for in Grays per thousand years (feldspar),Gray/ka,1.14 to 2.04 CapeCod_Data,Total_Dose_Rate_Feldspar_Error,1 sigma uncertainty in dose for feldspar in Grays (feldspar),Gray,0.29 to 0.32 CapeCod_Data,Dose_Rate_Ref,Literature reference and/or link to original data source,n/a,n/a CapeCod_Data,Grain_Size_Min(µm),Maximum grain size of the treated sample in microns,microns,90 CapeCod_Data,Grain_Size_Max(µm),Minimum grain size of the treated sample in microns,microns,250 CapeCod_Data,Age_Model_Used,Age model used to provide preferred age,n/a,n/a CapeCod_Data,Analysis_Type_Qtz,"Type of luminescence analysis for quartz (OSL, IRSL, TL, etc.)",n/a,n/a CapeCod_Data,Instrumental_Method_Qtz,Method of luminescence analysis (quartz),n/a,n/a CapeCod_Data,Aliquots_Passed_Qtz,Number of aliquots measured that passed acceptance criteria (quartz),n/a,10 to 29 CapeCod_Data,Alliquots_Total_Qtz,Number of aliquots measured for sample (quartz),n/a,10 to 30 CapeCod_Data,Equiv_Dose_Quartz,Equivalent dose of luminescence in Grays (quartz),Gray,0.38 to 3.25 CapeCod_Data,Equiv_Dose_Quartz_Error,1 sigma uncertainty in equivalent dose in Grays (quartz),Gray,0.05 to 1.45 CapeCod_Data,Equiv_Dose_Quartz_Scatter,Scatter of equivalent dose of luminescence in percentage (quartz),Percentage,0 to 15 CapeCod_Data,MAM_Age_Quartz(yrs),Luminescence age provided by the minimum age model (quartz),Years,920 to 44930 CapeCod_Data,MAM_Age_Quartz_Error(yrs),Luminescence age uncertainty provided by the minimum age model (quartz),Years,70 to 2050 CapeCod_Data,CAM_Age_Quartz(yrs),Luminescence age provided by the central age model (quartz),Years,1520 to 35600 CapeCod_Data,CAM_Age_Quartz_Error(yrs),Luminescence age uncertainty provided by the central age model (quartz),Years,280 to 11200 CapeCod_Data,Mean_Age_Quartz(yrs),Luminescence age provided by the weighted mean (quartz),Years,n/a CapeCod_Data,Mean_Age_Quartz_Error(yrs),Luminescence age uncertainty provided by the weighted mean (quartz),Years,n/a CapeCod_Data,Preferred_Age_Qtz(yrs),Preferred luminescence age of sample in thousands of years (quartz),Thousands of years,920 to 44930 CapeCod_Data,Preferred_Age_Quartz_Error(yrs),Preferred luminescence age error in thousands of years (quartz),Thousands of years,70 to 2050 CapeCod_Data,Analysis_Type_Fld,"Type of luminescence analysis for feldspar (OSL, IRSL, TL, etc.)",n/a,n/a CapeCod_Data,Instrumental_Method_Fld,Method of luminescence analysis (feldspar),n/a,n/a CapeCod_Data,Aliquots_Passed_Fld,Number of aliquots measured that passed acceptance criteria (feldspar),n/a,2 to 28 CapeCod_Data,Alliquots_Total_Fld,Number of aliquots measured for sample (feldspar),n/a,2 to 30 CapeCod_Data,Equiv_Dose_Feldspar,Equivalent dose of luminescence in Grays (feldspar),Gray,0.91 to 33.4 CapeCod_Data,Equiv_Dose_Feldspar_Error,1 sigma uncertainty in equivalent dose in Grays (feldspar),Gray,0.16 to 4.1 CapeCod_Data,Equiv_Dose_Feldspar_Scatter,Scatter of equivalent dose of luminescence in percentage (feldspar),Percentage,0 to 35 CapeCod_Data,MAM_Age_Feldspar(yrs),Luminescence age provided by the minimum age model (feldspar),Years,490 to 23600 CapeCod_Data,MAM_Age_Feldspar_Error(yrs),Luminescence age uncertainty provided by the minimum age model (feldspar),Years,210 to 6200 CapeCod_Data,CAM_Age_Feldspar(yrs),Luminescence age provided by the central age model (feldspar),Years,3020 to 34300 CapeCod_Data,CAM_Age_Feldspar_Error(yrs),Luminescence age uncertainty provided by the central age model (feldspar),Years,750 to 15100 CapeCod_Data,Mean_Age_Feldspar(yrs),Luminescence age provided by the weighted mean (feldspar),Years,n/a CapeCod_Data,Mean_Age_Feldspar_Error(yrs),Luminescence age uncertainty provided by the weighted mean (feldspar),Years,n/a CapeCod_Data,Uncorrected_Preferred_Age_Fld,Preferred luminescence age of sample before fading adjustment in thousands of years (feldspar),Thousands of years,490 to 23600 CapeCod_Data,Uncorrected_Preferred_Age_Fld_Error(yrs),Preferred luminescence age before fading adjustment uncertainty in thousands of years (feldspar),Thousands of years,210 to 6200 CapeCod_Data,Fading_Rate(G/decade),Fading rate of feldspar sample (in G/decade),G/decade,n/a CapeCod_Data,Fading_Rate_Error(G/decade),Fading rate of feldspar sample uncertainty (in G/decade),G/decade,n/a CapeCod_Data,Modeled_Age_Fld,Modeled luminescence age of sample after fading adjustment (feldspar),Years,n/a CapeCod_Data,Modeled_Age_Fld_Error(yrs),Uncertainty of modeled luminescence age of sample after fading adjustment (feldspar),Years,n/a CapeCod_Data,Sample_Comments,"Free text to describe features of a sample such as its components, texture, color, shape, etc.",n/a,n/a CapeCod_Data_Dictionary.csv GS ScienceBase U.S. Geological Survey mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. This database has been approved for release and publication by the Director of the USGS. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Digital Data https://doi.org/10.5066/P1S5DPZU None 20260205 Shannon A Mahan U.S. Geological Survey, ROCKY MOUNTAIN REGION Research Geologist mailing address

Mail Stop 963, W 6th Ave Kipling St

Lakewood CO 80225 US 303-236-7928 303-236-5556 smahan@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998