Citation:

356423a0

Name: Sedimentation rate and UK37 on Site 108-658
Published: 1992
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

High-resolution palaeoclimate records based on oxygen isotope data have provided important insights into climate variability and rates of natural climate change on about a thousand-year timescale. Little is known, however, about the variation of climate and of palaeoceanographic conditions throughout the Quaternary on timescales of less than 1,000 years (at frequencies far greater than those of the Milankovitch orbital cycles). Here we show that such high time resolution is possible from molecular stratigraphic studies based on 'biomarker' organic molecules (alkenones). We have sampled alkenone stratigraphic records at 70- to 200-yr intervals across glacial terminations I, II and IV in sediment cores from OOP site 658, off northwest Africa. Sea surface temperatures (SSTs) derived from the alkenone (Uk 37) index vary rapidly beyond the range of analytical noise by up to 2.5 °C in 300 yr, showing hitherto unknown cycles with about 600-yr periodicities. Some of the changes parallel similar events in the oxygen isotope stratigraphy. SST oscillations may be linked, in part, to abrupt breakdowns in Atlantic deep-water ventilation resulting from meltwater events of Quaternary glacial terminations.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: 20.749200 * Longitude: -18.580800

Date/Time Start: 1986-03-04T00:00:00 * Date/Time End: 1986-03-08T00:00:00

Minimum DEPTH, sediment/rock: 13.30 m * Maximum DEPTH, sediment/rock: 51.13 m

Event(s):

108-658 * Latitude: 20.749200 * Longitude: -18.580800 * Date/Time Start: 1986-03-04T00:00:00 * Date/Time End: 1986-03-08T00:00:00 * Elevation: -2274.0 m * Penetration: 537.1 m * Recovery: 541.5 m * Location: Canarias Sea * Campaign: * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 59 cores; 537.1 m cored; 0 m drilled; 100.8% recovery

Comment:

Depth is given as m.c.d. (meter composite depth).

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Comment
1	DEPTH, sediment/rock	Depth sed	m		Geocode
2	AGE	Age	ka BP		Geocode
3	Sedimentation rate	SR	cm/ka	Eglinton, Geoffrey
4	Alkenone, unsaturation index UK37	UK37		Eglinton, Geoffrey

License:

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

Size:

1148 data points

Data

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

1 Depth sed [m]	2 Age [ka BP]	3 SR [cm/ka]	4 UK37
13.30	102.150	19	0.692
13.38	102.560	19	0.693
13.41	102.720	19	0.692
13.46	102.970	19	0.685
13.48	103.080	19	0.735
13.50	103.180	19	0.705
13.52	103.280	19	0.708
13.54	103.390	19	0.719
13.56	103.490	19	0.704
13.58	103.590	19	0.763
13.60	103.700	19	0.709
13.62	103.800	19	0.786
13.64	103.940	15	0.720
13.66	104.070	15	0.711
13.68	104.210	15	0.711
13.70	104.340	15	0.711
13.72	104.480	15	0.726
13.74	104.620	15	0.692
13.76	104.750	15	0.723
13.78	104.890	15	0.744
13.80	105.020	15	0.718
13.82	105.160	15	0.744
13.84	105.300	15	0.723
13.86	105.430	15	0.719
13.88	105.570	15	0.727
13.90	105.700	15	0.704
13.92	105.840	15	0.743
13.94	105.970	15	0.701
13.96	106.110	15	0.745
13.98	106.250	15	0.691
14.00	106.380	15	0.746
14.02	106.520	15	0.666
14.04	106.650	15	0.744
14.06	106.790	15	0.717
14.08	106.930	15	0.722
14.10	107.060	15	0.720
14.12	107.200	15	0.717
14.14	107.330	15	0.753
14.16	107.470	15	0.711
14.18	107.610	15	0.757
14.20	107.740	15	0.671
14.22	107.880	15	0.793
14.24	108.010	15	0.675
14.26	108.150	15	0.742
14.28	108.290	15	0.651
14.30	108.420	15	0.668
14.31	108.490	15	0.692
14.32	108.560	15	0.675
14.34	108.690	15	0.672
14.36	108.830	15	0.671
14.38	108.970	15	0.749
14.40	109.100	15	0.704
14.42	109.240	15	0.764
14.44	109.370	15	0.684
14.46	109.510	15	0.691
14.48	109.650	15	0.731
14.50	109.780	15	0.719
14.52	109.920	15	0.766
14.54	110.050	15	0.698
14.56	110.190	15	0.705
14.58	110.320	15	0.686
14.60	110.460	15	0.807
14.62	110.600	15	0.719
14.64	110.730	15	0.713
14.66	110.870	15	0.714
14.68	111.000	15	0.733
14.70	111.140	15	0.722
14.72	111.280	15	0.759
14.74	111.410	15	0.759
14.76	111.550	15	0.727
14.78	111.680	15	0.786
14.82	111.960	15	0.775
14.84	112.090	15	0.726
14.86	112.230	15	0.726
14.88	112.360	15	0.725
14.89	112.430	15	0.681
14.90	112.500	15	0.646
14.91	112.570	15	0.664
14.92	112.640	15	0.711
14.94	112.770	15	0.714
14.96	112.910	15	0.725
14.98	113.040	15	0.709
15.00	113.180	15	0.697
15.02	113.320	15	0.716
15.04	113.450	15	0.735
15.06	113.590	15	0.749
15.08	113.720	15	0.713
15.10	113.860	15	0.722
15.12	114.000	15	0.712
15.14	114.130	15	0.714
15.16	114.270	15	0.734
15.18	114.400	15	0.746
15.21	114.610	15	0.726
15.22	114.680	15	0.696
15.24	114.810	15	0.722
15.26	114.950	15	0.690
15.28	115.080	15	0.774
15.30	115.220	15	0.675
15.33	115.420	15	0.761
15.34	115.490	15	0.677
15.36	115.630	15	0.731
15.38	115.760	15	0.743
15.40	115.900	15	0.692
15.42	116.040	15	0.708
15.44	116.170	15	0.698
15.46	116.310	15	0.718
15.48	116.440	15	0.733
15.49	116.510	15	0.715
15.50	116.580	15	0.730
15.51	116.650	15	0.757
15.52	116.720	15	0.756
15.54	116.850	15	0.739
15.56	116.990	15	0.726
15.58	117.120	15	0.736
15.60	117.260	15	0.726
15.62	117.400	15	0.736
15.64	117.530	15	0.731
15.66	117.670	15	0.746
15.68	117.800	15	0.736
15.70	117.940	15	0.735
15.72	118.080	15	0.754
15.74	118.210	15	0.742
15.76	118.350	15	0.733
15.78	118.480	15	0.737
15.80	118.620	15	0.755
15.82	118.760	15	0.793
15.84	118.890	15	0.763
15.86	119.030	15	0.766
15.88	119.160	15	0.763
15.90	119.300	15	0.753
15.92	119.440	15	0.770
15.94	119.570	15	0.763
15.96	119.710	15	0.810
15.98	119.840	15	0.776
16.00	119.980	15	0.769
16.02	120.120	15	0.780
16.04	120.250	15	0.783
16.06	120.390	15	0.822
16.08	120.520	15	0.848
16.10	120.660	15	0.812
16.12	120.800	15	0.830
16.14	120.930	15	0.764
16.16	121.070	15	0.815
16.18	121.200	15	0.814
16.20	121.340	15	0.826
16.22	121.480	15	0.812
16.24	121.610	15	0.807
16.26	121.750	15	0.822
16.28	121.880	15	0.834
16.30	122.020	15	0.830
16.32	122.170	13	0.821
16.34	122.330	13	0.819
16.36	122.480	13	0.819
16.38	122.640	13	0.831
16.40	122.790	13	0.796
16.42	122.950	13	0.823
16.44	123.100	13	0.835
16.46	123.260	13	0.836
16.48	123.410	13	0.839
16.50	123.570	13	0.830
16.52	123.720	13	0.815
16.56	124.030	13	0.847
16.58	124.190	13	0.801
16.60	124.340	13	0.858
16.62	124.500	13	0.855
16.64	124.650	13	0.867
16.66	124.810	13	0.823
16.68	124.960	13	0.859
16.70	125.120	13	0.822
16.72	125.270	13	0.823
16.74	125.430	13	0.822
16.76	125.580	13	0.807
16.78	125.740	13	0.844
16.80	125.890	13	0.819
16.82	126.050	13	0.802
16.84	126.200	13	0.808
16.86	126.360	13	0.809
16.88	126.510	13	0.814
16.90	126.670	13	0.797
16.92	126.820	13	0.803
16.94	126.980	13	0.783
16.96	127.130	13	0.802
16.98	127.290	13	0.788
17.00	127.440	13	0.761
17.01	127.520	13	0.723
17.02	127.600	13	0.748
17.04	127.750	13	0.745
17.06	127.910	13	0.769
17.08	128.060	13	0.759
17.09	128.140	13	0.764
17.10	128.220	13	0.749
17.12	128.370	13	0.756
17.13	128.450	13	0.700
17.15	128.600	13	0.706
17.16	128.680	13	0.759
17.18	128.830	13	0.768
17.19	128.910	13	0.711
17.20	128.990	13	0.732
17.22	129.140	13	0.727
17.24	129.300	13	0.722
17.26	129.450	13	0.771
17.28	129.610	13	0.806
17.30	129.760	13	0.773
17.32	129.920	13	0.769
17.34	130.070	13	0.751
17.36	130.230	13	0.745
17.38	130.380	13	0.752
17.40	130.540	13	0.701
17.42	130.690	13	0.712
17.44	130.850	13	0.711
17.46	131.000	13	0.709
17.48	131.160	13	0.727
17.50	131.310	13	0.707
17.52	131.470	13	0.708
17.54	131.620	13	0.728
17.56	131.780	13	0.732
17.58	131.930	13	0.750
17.60	132.090	13	0.803
17.62	132.240	13	0.756
17.64	132.400	13	0.743
17.66	132.550	13	0.760
17.68	132.710	13	0.787
17.70	132.860	13	0.812
17.72	133.020	13	0.767
17.74	133.170	13	0.745
17.76	133.330	13	0.795
17.78	133.480	13	0.754
17.80	133.640	13	0.752
17.81	133.710	13	0.739
17.82	133.790	13	0.736
17.84	133.950	13	0.733
17.86	134.100	13	0.717
17.88	134.260	13	0.739
17.89	134.330	13	0.728
17.91	134.490	13	0.724
17.93	134.640	13	0.736
17.95	134.800	13	0.751
17.97	134.950	13	0.765
17.99	135.110	13	0.738
18.01	135.260	13	0.752
18.03	135.430	11	0.738
18.05	135.600	11	0.744
18.07	135.780	11	0.725
18.09	135.960	11	0.721
18.11	136.130	11	0.743
18.13	136.310	11	0.729
18.15	136.480	11	0.731
18.17	136.660	11	0.732
18.19	136.840	11	0.731
18.21	137.010	11	0.691
18.25	137.370	11	0.699
18.27	137.540	11	0.740
18.29	137.720	11	0.742
18.31	137.890	11	0.737
18.33	138.070	11	0.723
18.35	138.250	11	0.672
18.37	138.420	11	0.725
18.39	138.600	11	0.725
18.43	138.950	11	0.717
18.45	139.130	11	0.700
18.47	139.300	11	0.711
18.49	139.480	11	0.717
18.52	139.740	11	0.722
18.54	139.920	11	0.738
18.58	140.270	11	0.709
18.60	140.450	11	0.691
18.62	140.620	11	0.700
18.64	140.800	11	0.705
18.66	140.980	11	0.724
18.70	141.330	11	0.691
18.72	141.500	11	0.691
18.74	141.680	11	0.691
18.76	141.860	11	0.696
18.78	142.030	11	0.694
18.82	142.380	11	0.701
18.84	142.560	11	0.666
18.86	142.740	11	0.661
18.88	142.910	11	0.675
18.90	143.090	11	0.668
18.92	143.260	11	0.689
18.94	143.440	11	0.687
18.96	143.620	11	0.688
18.98	143.790	11	0.664
19.01	144.060	11	0.668
19.02	144.150	11	0.687
19.04	144.320	11	0.684
19.06	144.500	11	0.637
19.08	144.670	11	0.683
19.10	144.850	11	0.656
19.12	145.030	11	0.635
19.14	145.200	11	0.654
19.16	145.380	11	0.726
19.18	145.550	11	0.668
19.20	145.730	11	0.666
19.22	145.910	11	0.678
19.24	146.080	11	0.685
19.26	146.260	11	0.681
19.30	146.610	11	0.631
19.32	146.790	11	0.667
19.34	146.960	11	0.641
19.36	147.140	11	0.638
19.38	147.310	11	0.708
19.40	147.490	11	0.677
19.40	147.490	11	0.701
19.42	147.670	11	0.663
19.44	147.840	11	0.696
19.46	148.020	11	0.635
19.48	148.200	11	0.718
19.50	148.370	11	0.650
19.52	148.550	11	0.770
19.54	148.720	11	0.680
19.56	148.900	11	0.753
19.60	149.250	11	0.743
19.62	149.440	10	0.761
19.64	149.630	10	0.749
19.66	149.820	10	0.701
19.68	150.010	10	0.730
19.72	150.390	10	0.743
19.74	150.590	10	0.724
19.76	150.780	10	0.719
19.80	151.160	10	0.750
19.82	151.350	10	0.702
19.84	151.550	10	0.716
19.86	151.740	10	0.683
19.88	151.930	10	0.713
19.90	152.120	10	0.686
19.92	152.310	10	0.760
19.94	152.500	10	0.685
19.96	152.700	10	0.706
19.98	152.890	10	0.669
20.00	153.080	10	0.674
20.02	153.270	10	0.675
20.04	153.460	10	0.734
20.08	153.850	10	0.717
20.10	154.040	10	0.746
20.12	154.230	10	0.708
20.14	154.420	10	0.713
20.18	154.810	10	0.682
20.20	155.000	10	0.763
20.22	155.190	10	0.671
20.55	157.270	16	0.699
20.80	158.850	16	0.704
20.90	159.480	16	0.721
21.09	160.680	16	0.704
21.56	163.640	16	0.716
22.09	166.980	16	0.684
46.03	317.980	16	0.762
46.19	318.990	16	0.795
46.20	319.050	16	0.722
46.22	319.180	16	0.754
46.24	319.310	16	0.720
46.26	319.430	16	0.770
46.28	319.560	16	0.719
46.30	319.680	16	0.745
46.32	319.810	16	0.733
46.34	319.940	16	0.722
46.36	320.050	21	0.736
46.42	320.340	21	0.776
46.44	320.430	21	0.662
46.46	320.530	21	0.799
46.48	320.630	21	0.795
46.50	320.720	21	0.796
46.52	320.820	21	0.807
46.54	320.920	21	0.812
46.56	321.010	21	0.827
46.58	321.110	21	0.776
46.62	321.300	21	0.819
46.64	321.400	21	0.824
46.68	321.590	21	0.771
46.70	321.690	21	0.791
46.72	321.790	21	0.774
46.74	321.880	21	0.836
46.76	321.980	21	0.801
46.78	322.080	21	0.788
46.80	322.170	21	0.762
46.83	322.320	21	0.819
46.87	322.510	21	0.909
46.89	322.610	21	0.821
46.91	322.710	21	0.767
46.93	322.800	21	0.853
46.94	322.850	21	0.832
46.95	322.900	21	0.836
46.97	323.000	21	0.825
46.99	323.090	21	0.842
47.01	323.190	21	0.852
47.03	323.290	21	0.778
47.05	323.380	21	0.780
47.07	323.480	21	0.781
47.09	323.580	21	0.800
47.10	323.650	21	0.789
47.14	323.820	21	0.779
47.15	323.870	21	0.815
47.17	323.960	21	0.821
47.19	324.060	21	0.805
47.21	324.160	21	0.801
47.23	324.250	21	0.808
47.25	324.350	21	0.818
47.27	324.450	21	0.776
47.29	324.540	21	0.856
47.29	324.570	21	0.853
47.30	324.590	21	0.834
47.32	324.690	21	0.845
47.34	324.780	21	0.856
47.36	324.880	21	0.878
47.38	324.980	21	0.885
47.40	325.070	21	0.878
47.42	325.170	21	0.869
47.44	325.270	21	0.896
47.46	325.360	21	0.867
47.48	325.460	21	0.855
47.52	325.650	21	0.863
47.54	325.750	21	0.846
47.56	325.850	21	0.857
47.58	325.940	21	0.852
47.60	326.040	21	0.848
47.61	326.090	21	0.832
47.63	326.190	21	0.840
47.65	326.280	21	0.838
47.68	326.430	21	0.847
47.72	326.620	21	0.838
47.74	326.720	21	0.831
47.76	326.810	21	0.837
47.80	327.010	21	0.850
47.84	327.200	21	0.841
47.85	327.250	21	0.835
47.87	327.350	21	0.847
47.88	327.390	21	0.813
47.89	327.440	21	0.776
47.91	327.540	21	0.803
47.93	327.630	21	0.860
47.95	327.730	21	0.833
47.97	327.830	21	0.833
47.99	327.920	21	0.805
48.01	328.020	21	0.792
48.03	328.120	21	0.817
48.05	328.210	21	0.811
48.07	328.310	21	0.793
48.09	328.410	21	0.845
48.11	328.500	21	0.808
48.13	328.600	21	0.840
48.15	328.700	21	0.789
48.17	328.790	21	0.785
48.19	328.890	21	0.762
48.21	328.990	21	0.782
48.23	329.080	21	0.825
48.25	329.180	21	0.777
48.27	329.280	21	0.778
48.29	329.370	21	0.792
48.31	329.470	21	0.792
48.33	329.570	21	0.788
48.35	329.660	21	0.745
48.37	329.760	21	0.764
48.39	329.860	21	0.768
48.41	329.950	21	0.774
48.43	330.050	21	0.778
48.47	330.240	21	0.790
48.49	330.340	21	0.775
48.51	330.430	21	0.787
48.53	330.530	21	0.767
48.55	330.630	21	0.801
48.57	330.720	21	0.813
48.61	330.920	21	0.749
48.63	331.010	21	0.745
48.65	331.110	21	0.793
48.67	331.210	21	0.775
48.69	331.300	21	0.758
48.71	331.400	21	0.749
48.73	331.500	21	0.783
48.75	331.590	21	0.759
48.77	331.690	21	0.754
48.79	331.790	21	0.778
48.81	331.880	21	0.808
48.83	331.980	21	0.763
48.85	332.080	21	0.741
48.87	332.170	21	0.746
48.89	332.270	21	0.755
48.91	332.370	21	0.728
48.93	332.460	21	0.727
48.95	332.560	21	0.739
48.97	332.660	21	0.706
48.99	332.750	21	0.717
49.01	332.850	21	0.710
49.02	332.900	21	0.797
49.03	332.950	21	0.791
49.05	333.040	21	0.720
49.07	333.140	21	0.721
49.09	333.240	21	0.715
49.11	333.330	21	0.716
49.13	333.430	21	0.739
49.15	333.520	21	0.730
49.17	333.620	21	0.718
49.19	333.720	21	0.714
49.21	333.810	21	0.716
49.22	333.860	21	0.717
49.23	333.910	21	0.724
49.25	334.010	21	0.723
49.27	334.100	21	0.737
49.29	334.200	21	0.751
49.31	334.300	21	0.747
49.32	334.350	21	0.723
49.33	334.390	21	0.728
49.35	334.490	21	0.704
49.37	334.590	21	0.719
49.41	334.780	21	0.708
49.42	334.830	21	0.702
49.43	334.880	21	0.717
49.44	334.920	21	0.747
49.45	334.970	21	0.749
49.46	335.020	21	0.702
49.47	335.070	21	0.720
49.49	335.170	21	0.724
49.51	335.260	21	0.730
49.53	335.360	21	0.736
49.55	335.460	21	0.705
49.57	335.550	21	0.741
49.59	335.650	21	0.694
49.62	335.790	21	0.687
49.63	335.840	21	0.673
49.65	335.940	21	0.675
49.67	336.040	21	0.700
49.71	336.230	21	0.683
49.73	336.330	21	0.680
49.77	336.520	21	0.689
49.79	336.620	21	0.683
49.81	336.720	21	0.690
49.83	336.810	21	0.695
49.85	336.910	21	0.687
49.87	337.010	21	0.706
49.89	337.110	21	0.698
49.91	337.200	21	0.708
49.93	337.300	21	0.699
49.95	337.400	21	0.711
49.97	337.500	21	0.688
49.99	337.590	21	0.717
50.01	337.690	21	0.690
50.03	337.790	21	0.691
50.05	337.880	21	0.696
50.07	337.980	21	0.690
50.09	338.080	21	0.657
50.11	338.180	21	0.692
50.13	338.270	21	0.692
50.15	338.370	21	0.691
50.17	338.470	21	0.695
50.19	338.570	21	0.705
50.21	338.660	21	0.667
50.23	338.760	21	0.683
50.25	338.860	21	0.678
50.27	338.960	21	0.702
50.29	339.050	21	0.685
50.31	339.150	21	0.707
50.33	339.250	21	0.677
50.35	339.350	21	0.675
50.37	339.440	21	0.688
50.39	339.540	21	0.733
50.41	339.640	21	0.706
50.43	339.740	21	0.664
50.45	339.830	21	0.715
50.47	339.930	21	0.718
50.49	340.030	21	0.707
50.51	340.130	21	0.674
50.53	340.220	21	0.711
50.55	340.320	21	0.676
50.57	340.420	21	0.666
50.59	340.510	21	0.692
50.61	340.610	21	0.718
50.63	340.710	21	0.714
50.65	340.810	21	0.753
50.67	340.900	21	0.733
50.69	341.000	21	0.724
50.71	341.100	21	0.723
50.73	341.200	21	0.738
50.75	341.290	21	0.737
51.05	342.760	21	0.692
51.13	343.140	21	0.696