Citation:

odp.proc.sr.121.175.1991

Name: Chemistry of ODP Hole 121-752B samples (Table 2)
Published: 1991
License: https://creativecommons.org/licenses/by/3.0/

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Published: 1991 (exact date unknown) • DOI registered: 2011-05-17

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Abstract:

Fourteen samples spanning a 2.5 m interval that includes the Cretaceous-Tertiary (K/T) boundary from Hole 752B near the crest of Broken Ridge in the eastern Indian Ocean, were studied in order to search for anomalous enrichments of iridium (Ir) and shock-metamorphosed quartz grains. No allogenic quartz grains >10 µm were observed, hence the presence of quartz containing diagnostic evidence of shock-metamorphism could not be confirmed. Two Ir anomalies of 2.2±0.6 and 2.0±0.4 parts per billion (ppb) were measured in samples of dark green ash-bearing chalk at depths of 357.93 and 358.80 mbelow seafloor (mbsf), respectively, (Samples 121-752B-11R-3, 13-14 cm, and 121-752B-11R-3, 100-101 cm) using conventional Instrumental Neutron Activation Analysis (INAA). These samples containing anomalous enrichments of Ir were taken from approximately 82 cm above and 5 cm below the extinction level of Globotruncanids. Our results are consistent with those of Michel et al. (this volume), who observe elevated concentrations of Ir at these depths in addition to a larger Ir anomaly associated with the extinction level of Globotruncanids.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: -30.891000 * Longitude: 93.577500

Date/Time Start: 1988-05-18T09:00:00 * Date/Time End: 1988-05-22T12:30:00

Minimum DEPTH, sediment/rock: 357.06 m * Maximum DEPTH, sediment/rock: 359.43 m

Event(s):

121-752B * Latitude: -30.891000 * Longitude: 93.577500 * Date/Time Start: 1988-05-18T09:00:00 * Date/Time End: 1988-05-22T12:30:00 * Elevation: -1097.0 m * Penetration: 435.6 m * Recovery: 112.34 m * Location: South Indian Ridge, South Indian Ocean * Campaign: * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 17 cores; 158 m cored; 0 m drilled; 71.1 % recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Identification	ID		Schuraytz, B C
2	Sample code/label	Sample label		Schuraytz, B C	DSDP/ODP/IODP sample designation
3	DEPTH, sediment/rock	Depth sed	m			Geocode
4	Comment	Comment		Schuraytz, B C		color and comments
5	Sample mass	Samp m	g	Schuraytz, B C
6	Sodium oxide	Na2O	%	Schuraytz, B C
7	Sodium oxide, standard deviation	Na2O std dev	±	Schuraytz, B C
8	Potassium oxide	K2O	%	Schuraytz, B C
9	Potassium oxide, standard deviation	K2O std dev	±	Schuraytz, B C
10	Calcium oxide	CaO	%	Schuraytz, B C
11	Calcium oxide, standard deviation	CaO std dev	±	Schuraytz, B C
12	Iron oxide, FeO	FeO	%	Schuraytz, B C
13	Iron oxide, FeO, standard deviation	FeO std dev	±	Schuraytz, B C
14	Scandium	Sc	mg/kg	Schuraytz, B C
15	Scandium, standard deviation	Sc std dev	±	Schuraytz, B C
16	Chromium	Cr	mg/kg	Schuraytz, B C
17	Chromium, standard deviation	Cr std dev	±	Schuraytz, B C
18	Cobalt	Co	mg/kg	Schuraytz, B C
19	Cobalt, standard deviation	Co std dev	±	Schuraytz, B C
20	Nickel	Ni	mg/kg	Schuraytz, B C
21	Nickel, standard deviation	Ni std dev	±	Schuraytz, B C
22	Rubidium	Rb	mg/kg	Schuraytz, B C
23	Rubidium, standard deviation	Rb std dev	±	Schuraytz, B C
24	Caesium	Cs	mg/kg	Schuraytz, B C
25	Caesium, standard deviation	Cs std dev	±	Schuraytz, B C
26	Strontium	Sr	mg/kg	Schuraytz, B C
27	Strontium, standard deviation	Sr std dev	±	Schuraytz, B C
28	Barium	Ba	mg/kg	Schuraytz, B C
29	Barium, standard deviation	Ba std dev	±	Schuraytz, B C
30	Lanthanum	La	mg/kg	Schuraytz, B C
31	Lanthanum, standard deviation	La std dev	±	Schuraytz, B C
32	Cerium	Ce	mg/kg	Schuraytz, B C
33	Cerium, standard deviation	Ce std dev	±	Schuraytz, B C
34	Neodymium	Nd	mg/kg	Schuraytz, B C
35	Neodymium, standard deviation	Nd std dev	±	Schuraytz, B C
36	Samarium	Sm	mg/kg	Schuraytz, B C
37	Samarium, standard deviation	Sm std dev	±	Schuraytz, B C
38	Europium	Eu	mg/kg	Schuraytz, B C
39	Europium, standard deviation	Eu std dev	±	Schuraytz, B C
40	Terbium	Tb	mg/kg	Schuraytz, B C
41	Terbium, standard deviation	Tb std dev	±	Schuraytz, B C
42	Ytterbium	Yb	mg/kg	Schuraytz, B C
43	Ytterbium, standard deviation	Yb std dev	±	Schuraytz, B C
44	Lutetium	Lu	mg/kg	Schuraytz, B C
45	Lutetium, standard deviation	Lu std dev	±	Schuraytz, B C
46	Zirconium	Zr	mg/kg	Schuraytz, B C
47	Zirconium, standard deviation	Zr std dev	±	Schuraytz, B C
48	Hafnium	Hf	mg/kg	Schuraytz, B C
49	Hafnium, standard deviation	Hf std dev	±	Schuraytz, B C
50	Tantalum	Ta	mg/kg	Schuraytz, B C
51	Tantalum, standard deviation	Ta std dev	±	Schuraytz, B C
52	Uranium	U	mg/kg	Schuraytz, B C
53	Uranium, standard deviation	U std dev	±	Schuraytz, B C
54	Thorium	Th	mg/kg	Schuraytz, B C
55	Thorium, standard deviation	Th std dev	±	Schuraytz, B C
56	Arsenic	As	mg/kg	Schuraytz, B C
57	Arsenic, standard deviation	As std dev	±	Schuraytz, B C
58	Selenium	Se	mg/kg	Schuraytz, B C
59	Selenium, standard deviation	Se std dev	±	Schuraytz, B C
60	Antimony	Sb	mg/kg	Schuraytz, B C
61	Antimony, standard deviation	Sb std dev	±	Schuraytz, B C
62	Iridium	Ir	ng/kg	Schuraytz, B C
63	Iridium, standard deviation	Ir std dev	±	Schuraytz, B C
64	Gold	Au	ng/kg	Schuraytz, B C
65	Gold, standard deviation	Au std dev	±	Schuraytz, B C

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

938 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 ID	2 Sample label	3 Depth sed [m]	4 Comment	5 Samp m [g]	6 Na2O [%]	7 Na2O std dev [±]	8 K2O [%]	9 K2O std dev [±]	10 CaO [%]	11 CaO std dev [±]	12 FeO [%]	13 FeO std dev [±]	14 Sc [mg/kg]	15 Sc std dev [±]	16 Cr [mg/kg]	17 Cr std dev [±]	18 Co [mg/kg]	19 Co std dev [±]	20 Ni [mg/kg]	21 Ni std dev [±]	22 Rb [mg/kg]	23 Rb std dev [±]	24 Cs [mg/kg]	25 Cs std dev [±]	26 Sr [mg/kg]	27 Sr std dev [±]	28 Ba [mg/kg]	29 Ba std dev [±]	30 La [mg/kg]	31 La std dev [±]	32 Ce [mg/kg]	33 Ce std dev [±]	34 Nd [mg/kg]	35 Nd std dev [±]	36 Sm [mg/kg]	37 Sm std dev [±]	38 Eu [mg/kg]	39 Eu std dev [±]	40 Tb [mg/kg]	41 Tb std dev [±]	42 Yb [mg/kg]	43 Yb std dev [±]	44 Lu [mg/kg]	45 Lu std dev [±]	46 Zr [mg/kg]	47 Zr std dev [±]	48 Hf [mg/kg]	49 Hf std dev [±]	50 Ta [mg/kg]	51 Ta std dev [±]	52 U [mg/kg]	53 U std dev [±]	54 Th [mg/kg]	55 Th std dev [±]	56 As [mg/kg]	57 As std dev [±]	58 Se [mg/kg]	59 Se std dev [±]	60 Sb [mg/kg]	61 Sb std dev [±]	62 Ir [ng/kg]	63 Ir std dev [±]	64 Au [ng/kg]	65 Au std dev [±]
TT28	121-752B-11R-2,76-77	357.06	dark green	0.11880	2.720	0.040	1.450	0.250	5.8	0.90	10.190	0.110	25.360	0.280	32.90	0.60	31.000	0.400	43	13.00	21.2	1.7	0.310	0.030	1040	40.000	1454	28	9.29	0.12	18.30	0.28	10.3	2.00	3.320	0.050	1.016	0.018	0.663	0.022	2.390	0.040	0.362	0.008	133	22.000	2.770	0.060	0.432	0.016	0.310	0.060	1.050	0.030	<1.00		0.50	0.21	0.376	0.020	<1000		1700	800
T19-1	121-752B-11R-3,13-14	357.93	dark green (two splits analyzed)	0.05870	1.807	0.021	2.410	0.250	16.6	0.40	7.650	0.080	22.570	0.250	63.50	0.90	26.000	0.300	76	14.00	39.2	1.9	0.770	0.040	820	30.000	443	13	25.68	0.29	40.80	0.60	22.3	2.40	5.380	0.070	1.288	0.023	1.032	0.028	3.430	0.050	0.494	0.011	103	22.000	2.680	0.070	0.554	0.020	0.380	0.050	1.370	0.040	1.45	0.180	<0.60		0.748	0.022	2700	1000	3300	1200
T19-2	121-752B-11R-3,13-14	357.93	dark green (two splits analyzed)	0.13160	1.910	0.026	2.410	0.240	16.5	0.90	7.620	0.080	22.800	0.250	63.90	0.90	27.500	0.300	67	11.00	38.7	1.7	0.750	0.030	830	30.000	478	12	26.08	0.29	40.40	0.50	25.7	2.10	5.490	0.070	1.350	0.220	1.058	0.025	3.450	0.050	0.502	0.009	121	20.000	2.660	0.050	0.577	0.017	0.320	0.050	1.418	0.029	1.70	0.250	<0.40		0.762	0.020	1900	800	3700	1400
TT29	121-752B-11R-3,24-25	358.04	fine layering	0.10900	1.761	0.023	1.600	0.150	19.3	0.60	4.720	0.050	15.860	0.170	53.80	0.80	13.220	0.160	40	9.00	20.8	1.2	0.363	0.028	1250	40.000	4410	80	15.78	0.18	27.40	0.40	14.1	1.50	3.570	0.050	0.779	0.015	0.614	0.019	1.870	0.030	0.281	0.006	87	16.000	2.190	0.050	0.507	0.015	0.640	0.050	1.610	0.030	0.29	0.120	0.70		0.236	0.013	800	0	3400	1000
TT27	121-752B-11R-3,27-28	358.07	green	0.10030	1.498	0.020	1.520	0.240	22.4	0.50	3.800	0.040	14.820	0.160	33.40	0.50	10.370	0.120	27	8.00	23.4	1.2	0.404	0.027	1220	40.000	4440	80	21.46	0.24	35.40	0.50	19.8	1.80	4.690	0.070	0.993	0.016	0.777	0.019	2.610	0.040	0.384	0.008	115	17.000	2.950	0.060	0.740	0.018	0.520	0.070	2.610	0.040	<0.60		0.34	0.17	0.555	0.018	<800		3700	1400
TT32	121-752B-11R-3,34-35	358.14	layered green	0.11030	1.845	0.024	1.750	0.180	19.0	0.60	5.260	0.060	16.580	0.180	31.40	0.50	12.170	0.150	48	13.00	27.2	1.4	0.400	0.030	1140	40.000	3840	70	22.26	0.25	41.60	0.60	25.1	2.10	5.860	0.080	1.133	0.020	1.048	0.025	3.470	0.050	0.510	0.009	203	27.000	4.820	0.090	1.330	0.030	1.600	0.070	4.470	0.070	0.54	0.180	<0.80		0.769	0.020	<900		3500	1200
T24	121-752B-11R-3,42-43	358.22	very hard sediment	0.11930	0.410	0.005	0.218	0.017	39.0	0.70	0.488	0.006	1.644	0.018	2.76	0.13	3.440	0.040	<12		3.1	0.3	0.057	0.010	411	24.000	885	17	13.67	0.15	20.70	0.30	11.5	1.00	1.914	0.024	0.275	0.006	0.288	0.008	1.148	0.020	0.160	0.003	67	8.000	1.820	0.040	0.666	0.017	0.086	0.017	2.280	0.030	0.19	0.030	<0.31		0.164	0.005	<800		1000	400
TT31	121-752B-11R-3,67-68	358.47	dark and light sediment, mostly light sampled	0.08325	2.061	0.026	0.850	0.080	19.5	0.70	7.370	0.080	19.950	0.220	65.00	0.90	24.060	0.280	46	12.00	11.8	1.4	0.190	0.030	730	30.000	1960	40	12.25	0.14	16.24	0.26	9.2	1.70	2.750	0.040	0.778	0.016	0.580	0.021	1.980	0.030	0.302	0.006	68	19.000	1.880	0.050	0.332	0.016	0.870	0.050	0.900	0.029	1.58	0.120	1.41	0.24	0.427	0.017	<1100		2700	1000
T26A	121-752B-11R-3,73-74	358.53	dark green	0.10510	1.319	0.017	0.850	0.150	28.3	0.60	3.010	0.030	16.080	0.180	56.80	0.80	32.800	0.400	43	10.00	11.7	1.0	0.260	0.029	920	30.000	3450	60	19.23	0.22	20.80	0.30	16.1	1.90	3.620	0.050	0.936	0.016	0.620	0.021	2.360	0.040	0.353	0.008	71	15.000	1.980	0.050	0.416	0.014	1.490	0.090	1.300	0.030	5.70	0.300	2.11	0.21	1.123	0.025	<800		6700	1400
T26B	121-752B-11R-3,73-74	358.53	light green	0.12500	1.178	0.015	0.800	0.070	32.0	0.90	2.960	0.030	15.220	0.170	53.90	0.70	20.850	0.250	26	7.00	12.7	0.9	0.249	0.026	746	28.000	2420	40	17.99	0.20	18.90	0.27	12.8	1.20	3.250	0.040	0.835	0.015	0.614	0.016	2.150	0.030	0.324	0.005	68	15.000	1.820	0.050	0.378	0.013	1.580	0.040	0.861	0.020	2.23	0.090	1.24	0.18	0.624	0.013	700		6200	700
T21A	121-752B-11R-3,100-101	358.80	light green	0.14550	0.550	0.006	0.680	0.070	43.2	0.80	1.092	0.012	4.290	0.050	9.30	0.23	6.710	0.080	23	4.00	10.4	0.6	0.306	0.014	1060	40.000	1173	22	14.29	0.16	10.68	0.16	11.7	1.00	2.380	0.030	0.572	0.010	0.394	0.010	1.380	0.021	0.207	0.004	27	6.000	0.734	0.022	0.135	0.006	0.270	0.018	0.557	0.015	0.56	0.060	0.89	0.11	0.286	0.008	<400		800	300
T21B	121-752B-11R-3,100-101	358.80	dark green	0.10560	0.789	0.011	0.520	0.110	39.2	0.70	1.430	0.016	6.270	0.070	38.00	0.60	22.420	0.260	64	6.00	9.7	0.7	0.349	0.020	990	40.000	743	15	13.81	0.16	12.30	0.19	12.7	1.30	2.780	0.040	0.643	0.011	0.499	0.013	2.030	0.030	0.274	0.005	50	11.000	1.600	0.030	0.540	0.015	2.560	0.080	1.950	0.030	11.00	0.300	1.36	0.19	0.700	0.015	2000	400	2800	700
T23	121-752B-11R-3,120-121	359.00	very hard sediment	0.12640	0.451	0.006	0.310	0.040	42.5	0.70	0.542	0.006	2.840	0.030	5.96	0.17	2.960	0.040	10	3.00	6.0	0.4	0.243	0.012	960	50.000	1066	21	11.69	0.13	7.86	0.13	11.1	1.00	1.958	0.025	0.451	0.008	0.346	0.010	1.345	0.023	0.190	0.004	<18		0.489	0.015	0.106	0.005	0.810	0.030	0.489	0.012	1.02	0.080	0.39	0.09	0.208	0.007	<400		1230	180
T22	121-752B-11R-3,140-141	359.20	abundant dark speckles	0.14990	0.425	0.005	0.280	0.030	41.7	0.70	0.438	0.005	2.276	0.025	5.15	0.13	2.247	0.028	<12		5.4	0.4	0.212	0.010	940	50.000	1128	22	11.10	0.12	7.12	0.12	10.1	0.90	1.807	0.023	0.408	0.007	0.320	0.009	1.150	0.019	0.162	0.003	15	5.000	0.444	0.014	0.083	0.004	0.499	0.029	0.419	0.010	0.54	0.060	0.13	0.07	0.201	0.006	<300		800	300
T20	121-752B-11R-4,13-14	359.43	light green	0.12120	0.458		0.410	0.006	43.3	0.04	0.689	0.800	3.030	0.008	7.25	0.03	5.280	0.200	10	0.06	7.2	4.0	0.257	0.400	980	0.013	1398	60	11.54	27.00	8.29	0.13	11.5	0.14	1.938	1.000	0.445	0.025	0.328	0.008	1.161	0.009	0.165	0.020	19	0.003	0.436	5.000	0.088	0.015	0.431	0.005	0.473	0.021	0.88	0.013	0.68	0.06	0.201	0.120	<400		11300	600