OCEAN DRILLING PROGRAM July 1990 DATA FILE DOCUMENTATION * REVISED EDITION SEDIMENT CHEMICAL ANALYSIS CARBON/CARBONATE I. INTRODUCTION The Carbon/Carbonate data file contains data generated in the chemistry laboratory onboard the JOIDES Resolution. The data file includes the weight percentages of inorganic carbon, organic carbon, total carbon, calcium carbonate, nitrogen, and sulfur. Although other carbonates may be present, all acid-soluble carbon is calculated as calcium carbonate. The instruments used and the Legs on which they were used are listed below followed by a brief description. For more information about the instruments and methods refer to the references listed in Section III. This version of the Carbon/Carbondate data file description contains the new field positions since the blanks between the Total_Carbon_Percent, Organic_Carbon_Percent, Nitrogen_Percent, and Sulfur_Percent fields were deleted by NGDC. This dfd also contains the information on the extended field descriptions added to the end of the data file. Instrument Legs Carbonate Bomb 101-105 Perkin Elmer CHN Elemental Analyzer 101-111 Coulometrics 5020 TC Apparatus 112-124 Coulometrics 5030 Carbonate Carbon 103-129 Apparatus Carlo Erba CNS Elemental Analyzer 1106 124E-129 Carbonate Bomb: The calcium carbonate content of a sample is determined by measuring the increase in gas pressure caused by acidifying a dried sediment sample in a closed vessel. The percent carbonate is then read from a pressure-concentration curve constructed from standard runs. (Section VI describes the pressure- concentration data available). Perkin Elmer CHN Elemental Analyzer: The model 240C Elemental Analyzer is used to determine the total carbon of a sample. Samples are combusted at 1000 degrees C in an oxygen atmosphere. The concentrations of the combustion products are then determined against known standards. Coulometrics 5020 TC Apparatus: The TC Apparatus combusts a sample at 1000 degrees C, converting the mineral and organic carbon to CO2. Results for the percent total carbon content are given. Coulometrics 5030 Carbonate Carbon Apparatus: The Carbonate Carbon Apparatus determines the amount of carbon in a sample from the acid digestion of carbonate. Results are given in micrograms of carbon, percent calcium carbonate or percent inorganic carbon. Carlo Erba CNS Elemental Analyzer 1106: The CNS Elemental Analyzer is used to determine the total carbon, nitrogen, and sulfur of a sample. Samples are combusted and the resulting gases chromatographically separated and detected by a thermal conductivity detector. If you have problems or questions concerning these data, please contact: Data Librarian, Data Base Group Ocean Drilling Program Texas A&M University Research Park 1000 Discovery Drive College Station, Texas 77845-9547 U.S.A. (979) 845-8495, 845-2673 Email: database@odpemail.tamu.edu Fax Number: 979-845-4857 II. LEGS IN THE DATA FILE The data file contains data from Legs 101 to 129. No Carbon/Carbonate data were collected on Legs 102, 106, 109, or 118. III. BIBLIOGRAPHY Emeis, K., and Kvenvolden, K.A., 1986. "Shipboard Organic Geochemistry on JOIDES Resolution", Ocean Drilling Program Technical Note No. 7, 130 p. Kvenvolden, K.A., and McDonald, T.J., 1986. "Organic Geochemistry on the JOIDES Resolution--An Assay", Ocean Drilling Program Technical Note No. 6, 147 p. Shipboard Scientific Party, 1987. Explanatory Notes. in Kastens, K.A., Mascle, J., Auroux, C., et al., Proc. ODP, Init. Repts. (Pt. A), 107, 65-88. IV. DATA ITEM FORMATS CARBON CARBONATE ITEMS FORMAT ========================== =========== SAMPLE_CODE Text 4 LEG Integer 3 SUBLEG Text 1 SITE Integer 4 HOLE Text 1 CORE Integer 3 CORETYPE Text 1 SECTION Text 2 TOP_INTERVAL Integer 3 BOTTOM_INTERVAL Integer 3 INORGANIC_CARBON_PERCENT Decimal F6.2 CACO3_PERCENT Decimal F5.1 TOTAL_CARBON_PERCENT Decimal F6.2 * ORGANIC_CARBON_PERCENT Decimal F6.2 * NITROGEN_PERCENT Decimal F6.2 * SULFUR_PERCENT Decimal F6.2 * CACO3_METHOD Text 1 BOMB_PRESSURE Decimal F4.1 BOMB_STANDARD_LINK Integer 2 COMMENTS Text 55 NGDC note: * actual format F7.2 V. EXPLANATION OF THE CARBON/CARBONATE DATA ITEMS SAMPLE_CODE - An alpha code identifying the investigator or test for which the sample was taken. LEG - Number identifying the cruise. The Ocean Drilling Program started numbering the cruises of the JOIDES Resolution at Leg 101. SUBLEG - Letter identifying a subleg or transit. A subleg is the continuation of a Leg after a port call; it often involves a crew change. SITE - Number identifying the site. A site is the position of a beacon around which holes are drilled. HOLE - Letter identifying the hole. CORE - Number identifying the core. Cores are numbered serially from the top of the hole downward. CORETYPE - A letter code identifying the drill bit/coring method used to retrieve the core. The coretype codes are: B - Drill Bit C - Center Bit D - Positive Displacement H - Hydraulic (Advanced) Piston Core M - Miscellaneous N - Downhole Mud Motor (Navidrill) P - Pressure Core Barrel R - Rotary S - Side Wall Core W - Wash Core X - Extended Core Barrel SECTION - A core is cut into 1.5-meter-long sections that are numbered serially from the top of the core. A core with full recovery will have 7 sections and a core catcher and be approximately 9.8 meters long. TOP_INTERVAL - The location of the top of a sample within a section in centimeters. BOTTOM_INTERVAL - The location of the bottom of a sample within a section in centimeters. INORGANIC_CARBON_PERCENT - The weight percent of inorganic carbon in a sample measured directly or calculated as follows: Inorganic_Carbon_Percent x 8.33 = CaCO3_Percent. CACO3_PERCENT - The weight percent of calcium carbonate in a sample. It may be measured directly by the Carbonate Bomb or indirectly from the Coulometrics 5030 Carbonate Carbon Apparatus using the following calculation: Inorganic_Carbon_Percent x 8.33 = CaCO3_Percent. TOTAL_CARBON_PERCENT - The weight percent of total carbon measured by the Perkin Elmer CHN Elemental Analyzer, the Coulometrics 5020 TC apparatus, or the Carlo Erba CNS Elemental Analyzer 1106. ORGANIC_CARBON_PERCENT - The weight percent of organic carbon in a sample. This value is obtained by subtracting the Inorganic_Carbon_Percent from the Total_Carbon_Percent. NITROGEN_PERCENT - The weight percent of nitrogen in a sample. It may be measured directly from the Carlo Erba CNS Elemental Analyzer 1106. SULFUR_PERCENT - The weight percent of sulfur in a sample. This value is directly measured from the Carlo Erba CNS Elemental Analyzer 1106. CACO3_METHOD - Indicates the method used to obtain percent calcium carbonate ("C" for Coulometrics, "B" for Carbonate Bomb). BOMB_PRESSURE - Pressure value in psi obtained from a Carbonate Bomb analysis. BOMB_STANDARD_LINK - An internal number that links records in the Carbon/Carbonate data file and the Bomb Standards data file (see section VI). COMMENTS - Contains any comments or remarks about the sample. VI. BOMB STANDARDS DATA FILE (see end of this document for file) The Bomb Standards data file contains data generated from Carbonate Bomb standard runs. Each record in the data file includes a set of weight and pressure values used to construct a pressure-concentration curve. From a given curve, several percent carbonate values were determined and stored in the Carbon/Carbonate data file. Thus, each record in the Bomb Standards data file has several corresponding records in the Carbon/Carbonate data file. Records in the Carbon/Carbonate data file with CaCO3_Method equal to "B" can be tied to a record in the Bomb Standards data file by matching the values for Leg, Subleg, Site, Hole, and Bomb_Standard_Link. Data are available in the Bomb Standards data file only for samples in the Carbon/Carbonate data file with CaCO3_method equal to "B". Below is a list of the data items in the Bomb Standards data file, followed by a brief description of each data item. BOMB STANDARDS ITEMS FORMAT ======================= ========= LEG Integer 3 SUBLEG Text 1 SITE Integer 4 HOLE Text 1 BOMB_STANDARD_LINK Integer 2 STANDARDS A_GRAMS Decimal F4.1 A_LBS_PRESSURE Decimal F4.1 . . . F_GRAMS Decimal F4.1 F_LBS_PRESSURE Decimal F4.1 REMARKS Text 50 LEG - Number identifying the cruise. The Ocean Drilling Program started numbering the cruises of the JOIDES Resolution at Leg 101. SUBLEG - Letter identifying a subleg or transit. A subleg is the continuation of a Leg after a port call; it often involves a crew change. SITE - Number identifying the site. A site is the position of a beacon around which holes are drilled. HOLE - Letter identifying the hole. BOMB_STANDARD_LINK - An internal number that links records in the Carbon/Carbonate data file and the Bomb Standards data file. STANDARD A_GRAMS - Weight of sample in grams for run A. A_LBS_PRESSURE - Pressure value in pounds for run A. . . . F_GRAMS - Weight of sample in grams for run F. F_LBS_PRESSURE - Pressure value in pounds for run F. REMARKS - Contains any comments or remarks about the sample. RECORD FORMAT ON TAPE FOR THE CARBON CARBONATE DATA FILE COLUMN DATA ITEMS ON TAPE ====================== ======== SAMPLE_CODE 2-5 LEG 6-8 SUBLEG 9-9 SITE 10-13 HOLE 14-14 CORE 15-17 CORETYPE 18-18 SECTION 19-20 TOP_INTERVAL 21-23 BOTTOM_INTERVAL 24-26 INORGANIC_CARBON_PERCENT 27-32 CACO3_PERCENT 33-37 TOTAL_CARBON_PERCENT 38-43 (38-44) ORGANIC_CARBON_PERCENT 44-49 (45-51) NITROGEN_PERCENT 50-55 (52-58) SULFUR_PERCENT 56-61 (59-65) CACO3_METHOD 62-62 (66) BOMB_PRESSURE 63-66 (67-70) BOMB_STANDARD_LINK 67-68 (71-72) COMMENTS 69-123 (73-127) NGDC note: Bomb Standards data file: actual column positions are given in parentheses. G101 0626A0100.20001.800.40006.000.60009.900.80013.101.00017.4 G101 0626B0200.20001.800.40006.000.60009.900.80013.101.00017.4 G101 0626C0300.20001.800.40006.000.60009.900.80013.101.00017.4 G101 0626C0400.20002.900.40006.700.60010.900.80014.601.00018.6 G101 0626D0500.20000.0 no lbs. press. recorded G101 0627A0600.20002.900.40006.700.60010.900.80014.601.00018.6 rough seas-difficult to accurately weigh G101 0627B0700.20002.900.40006.700.60010.900.80014.601.00018.6 G101 0628A0800.20002.900.40006.700.60010.900.80014.601.00018.6 G101 0629A0900.20002.900.40006.700.60010.900.80014.601.00018.6 G101 0630A1000.40008.500.60012.500.80017.401.00022.1 very rough-difficult to weigh G101 0630A1100.20002.000.40006.100.60009.600.80014.301.00017.8 G101 0631A1200.20002.900.40006.600.60010.500.80014.501.00018.8 frothy on acidification-hard to tell reaction end G101 0631A1300.20002.300.40005.200.60008.800.80013.401.00017.0 G101 0632A1400.20002.300.40005.200.60008.800.80013.401.00017.0 G101 0632B1500.20003.000.40006.100.60011.500.80015.001.00019.0 G101 0633A1600.20004.000.40008.200.60012.400.80015.801.00019.8 G101 0634A1700.20001.800.40006.000.60009.800.80012.801.00017.0 G101 0635B1800.20000.000.40005.200.60009.600.80014.001.00017.3 G101 0635B1900.20004.200.40008.000.60012.300.80014.601.00018.8 G103 0637A0101.00018.700.80015.400.60011.000.40007.500.20002.8 G103 0638B0201.00018.200.80016.000.60010.900.40007.200.20003.1 G103 0638B0301.00019.200.80015.400.60011.000.40007.600.20003.2 G103 0638B0401.00018.400.80014.400.60010.200.40006.300.20002.5 G103 0638B0500.20004.700.40009.200.60012.100.80016.401.00018.9 G103 0638B0601.00019.800.80016.200.60013.000.40008.000.20004.4 G103 0638B0701.00018.700.80014.600.60011.200.40007.100.20003.0 G103 0638C0800.20002.000.40006.400.60011.000.80015.001.00019.0 G103 0638C1001.00018.800.80015.400.60011.000.40007.400.20004.0 G103 0638C1701.00019.700.80015.600.60011.000.40007.100.20002.0 G103 0639A0901.00018.800.80015.400.60011.000.40007.400.20004.0 G103 0639B1101.00018.800.80015.400.60011.000.40007.400.20004.0 G103 0639B1200.20005.400.40009.800.60012.600.80017.001.00020.0 G103 0639C1300.20005.400.40009.800.60012.600.80017.001.00020.0 G103 0639D1400.20005.400.40009.800.60012.600.80017.001.00020.0 G103 0639D1500.20003.100.40007.100.60010.700.80016.201.00018.8 G103 0639D1601.00019.700.80015.600.60011.000.40007.100.20002.0 G103 0639E1800.20004.200.40008.000.60012.400.80016.801.00020.4 G103 0640A1900.20002.800.40007.700.60011.200.80015.201.00019.0 G103 0640A2000.15002.900.45007.800.63010.800.88015.8 G103 0641A2100.53010.500.94017.600.39006.800.10001.200.68012.6 G103 0641A2301.00018.200.76013.500.54009.300.41007.200.27004.7 G103 0641C2200.53010.500.94017.600.39006.800.10001.200.68012.6 G103 0641C2400.53010.500.94017.600.39006.800.10001.200.68012.6 G103 0641C2501.13021.800.81015.000.68013.000.34005.700.19003.5 G104 0642A0100.22003.800.34004.900.63010.800.84014.900.98017.5 G104 0642B0200.22003.800.34004.900.63010.800.84014.900.98017.5 G104 0642B0300.26003.800.34005.400.59010.200.84014.900.96016.7 G104 0642C0400.00000.0 G104 0642C0500.22003.800.34004.900.63010.800.84014.900.98017.5 G104 0642C0600.00000.0 G104 0642C0900.26003.800.34005.400.59010.200.84014.900.96016.7 G104 0642D0700.26003.800.34005.400.59010.200.84014.900.96016.7 G104 0642D0800.00000.0 G104 0642D1000.26003.800.34005.400.59010.200.84014.900.96016.7 G104 0643A1100.10000.400.20003.600.40005.800.60009.400.80013.401.00017.7 G104 0643A1200.10000.400.20003.600.60009.400.80013.401.00017.7 G104 0643A1300.10000.700.20002.600.40006.100.60010.000.80012.701.00017.4 G104 0643A1400.20002.7 G104 0643A1500.00000.0 G104 0644A1600.10000.800.18002.200.49008.100.73012.401.06019.6 G105 0645B2600.20003.500.40006.600.60010.400.80014.001.00017.8 G105 0645B2700.20003.600.40008.100.60011.600.80016.501.00018.6 G105 0645B2800.20004.000.40007.800.60011.500.80013.201.00018.0 G105 0645C2900.20003.200.40006.400.60010.200.80014.201.00017.8 G105 0645D3000.20003.200.40006.400.60010.300.80014.201.00017.8 G105 0645D3100.20003.200.40006.400.60010.200.80014.201.00017.8 G105 0645E3200.21004.000.42007.900.59010.400.85015.001.00017.8 G105 0645E3300.20002.900.41006.000.63010.500.81014.501.02019.0 G105 0645E3400.20003.600.40006.400.61010.500.80014.100.99017.4 G105 0645E3500.20003.500.40006.800.60010.500.80014.401.00017.8 G105 0645E3600.20004.000.40007.200.60010.600.80014.501.00018.6 G105 0645F3700.20004.000.40007.200.60010.600.80014.501.00018.6 G105 0645G3800.20004.000.40007.200.60010.600.80014.501.00018.6 G105 0646A0700.22005.000.41007.400.60011.000.78013.801.01019.0 Underway with heavy seas during weighing. G105 0646A0800.20003.600.41007.400.60011.000.78013.801.01019.0 G105 0646A0900.20003.900.40007.400.61011.400.82015.101.03019.2 G105 0646A1000.15002.000.25002.900.44007.600.59011.000.77013.901.02018.4 G105 0646A1100.20002.700.41007.600.60011.000.82015.001.03018.6 G105 0646A1200.21003.000.40006.100.61010.200.81014.201.00018.8 G105 0646A1300.21003.200.40006.500.60010.000.81013.801.00018.4 G105 0646A1400.21003.400.41006.800.60010.200.80014.401.00018.2 G105 0646A1500.20002.600.41006.800.60009.700.80013.801.00017.4 G105 0646B1600.20004.300.30005.200.40007.900.50009.000.60011.400.70013.0 G105 0646B1700.20000.000.30005.800.40007.100.50009.500.60010.900.70014.2 G105 0646B1800.20003.200.40006.400.60010.200.80014.401.00018.0 G105 0646B1900.20002.600.41006.800.60009.700.80013.801.00017.4 G105 0646B2000.15002.000.25002.900.44007.600.59011.000.77013.901.02018.4 G105 0646B2100.15002.000.25003.900.44007.600.59011.000.77013.901.02018.4 G105 0646B2200.00000.0 G105 0646B2300.21003.400.41006.800.60010.200.80014.401.00018.2 G105 0646B2400.20002.700.41007.600.60011.000.82015.001.03018.6 G105 0646B2500.22003.600.41007.400.60011.000.78013.801.01019.0 G105 0647A0100.22003.400.41007.500.60011.000.84015.600.99019.1 G105 0647A0200.00000.0 G105 0647A0300.21003.500.42007.400.60010.100.83015.800.99018.2 G105 0647A0400.18003.400.41007.500.62011.600.80014.901.01018.8 G105 0647A0500.23003.500.41007.000.60010.800.83015.901.01018.6 G105 0647A0601.00018.700.80014.900.60011.600.40008.000.20003.8