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Husson, Dorothée; Galbrun, Bruno; Gardin, Silvia; Thibault, Nicolas (2014): Susceptibility measurements at Gubbio sections [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.829778, Supplement to: Husson, D et al. (2014): Tempo and duration of short-term environmental perturbations across the Cretaceous-Paleogene boundary. Stratigraphy, 11(2), 159-171, https://inria.hal.science/ISTEP/hal-01092775v1

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Abstract:
The complex interplay between extraterrestrial events and earth-bound processes that triggered one of the greatest biological crises of the Phanerozoic requires a high resolution timescale. Detailed magnetic susceptibility measurements at the Contessa Highway and Bottaccione sections (Italy) span the Cretaceous-Paleogene boundary and reveal clear orbital signatures in the sedimentary record. Identification of precession and 405 kyr eccentricity cycles allows an estimate of 324+/-40 kyr for the duration of the Maastrichtian part of Chron C29r. We present in the same high resolution time frame sites in Spain and the North and South Atlantic and bio-horizons, biotic changes, stable isotopic excursions and the decrease in Osmium isotopes recorded in these sections. The onset of 187 Os/ 188 Os decrease coincides with the d13 C negative excursion K-PgE1, thus suggesting a first pulse in Deccan volcanism at 66.64 Ma. The K-PgE3 d13 C negative excursion is possibly the expression of a second pulse at 66.26 Ma. Late Maastrichtian d13 C negative excursions are of low intensity and span durations of one to two eccentricity cycles, whereas early Danian excursions are brief (about 30 kyr) and acute. In Biotic response to late Maastrichtian perturbations occurred with a delay of ca. 200 kyr after the beginning of K-PgE1 shortly before K-PgE3. The biotic perturbation could be thus either a delayed response to K-PgE1, or a direct response to K-PgE3, and possibly, a threshold response to the stepwise buildup of CO2 atmospheric injections. No delay is evident in response to early Danian hyperthermal events. These differences suggest that short-lived, volcanically-derived environmental perturbations were buffered within the stable late Maastrichtian oceanic realm whereas they were amplified by the more sensitive and highly disturbed early Danian oceanic ecosystem.
Coverage:
Latitude: 43.360000 * Longitude: 12.580000
Minimum DEPTH, sediment/rock: 365.25 m * Maximum DEPTH, sediment/rock: 379.00 m
Event(s):
Gubbio (GUB) * Latitude: 43.360000 * Longitude: 12.580000 * Location: Italy
Comment:
Magnetic susceptibility measured on samples from the Contessa (43° 22' 45'' N 13° 33' 42'' E) and Bottaccione (43° 21' 57'' N 12° 34' 57'' E) sections (Gubbio, Italy). The signal corresponds to the magnetochron C29r, extending on both sides of the K-Pg boundary. The Contessa section covers C29r Paleogene part, the Bottaccione section covers C29r Maastrichtian part.
Depth [m] means the stratigraphical position of the sample in the composite section (m).
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
DEPTH, sediment/rockDepth sedmGeocode
Susceptibility, specificchi10-9 m3/kgHusson, Dorothée
Size:
263 data points

Data

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


Depth sed [m]

chi [10-9 m3/kg]
379.0010.5248
378.9513.8682
378.9017.9556
378.8516.3852
378.8020.5188
378.7517.7392
378.7017.4820
378.6519.3810
378.6018.5152
378.5520.8864
378.5018.8168
378.4513.4445
378.4016.8728
378.3518.0737
378.3020.3384
378.2512.9193
378.2011.9810
378.1515.0143
378.0519.8351
378.0014.9224
377.9520.2542
377.9017.2126
377.8514.4529
377.8014.2113
377.7516.8719
377.7013.6894
377.6514.8849
377.5516.5528
377.5020.7563
377.4524.1338
377.3555.6877
377.3027.2092
377.2540.0453
377.2020.9576
377.1513.6106
377.0518.5276
377.0015.1374
376.9525.0000
376.9018.8972
376.8521.1820
376.8016.3438
376.7523.8815
376.7017.3132
376.6513.4893
376.6016.2584
376.5511.5548
376.5017.2097
376.4519.5780
376.4021.0806
376.3517.8609
376.3024.8234
376.2524.2122
376.2015.3146
376.1513.0666
376.1022.6058
376.0516.3608
376.0011.6229
375.9515.9066
375.9017.9923
375.8518.6356
375.8016.1566
375.7511.1463
375.7010.0586
375.6512.1992
375.6013.2907
375.5512.8028
375.5011.5951
375.4516.2872
375.4013.2389
375.3517.1091
375.3019.1102
375.2521.7821
375.2017.6996
375.158.7333
375.1018.3245
375.0511.8405
374.959.2930
374.9013.6658
374.8511.8371
374.8012.1423
374.758.0168
374.699.1462
374.6514.2554
374.6020.7023
374.5516.8803
374.5015.0207
374.4512.3711
374.4012.2724
374.3514.1656
374.3015.3076
374.2511.4495
374.2014.2463
374.1513.8984
374.1011.7764
374.0513.5044
374.0013.2741
373.9515.3229
373.8515.6655
373.7535.4060
373.6522.4810
373.6028.3145
373.5520.2332
373.5016.5077
373.4532.5101
373.4047.9017
373.3544.8215
373.3019.5821
373.2546.1342
373.2024.1766
373.1514.1149
373.1043.3822
373.0519.7623
373.006.7985
372.9020.2660
372.859.9927
372.8011.9300
372.7518.0433
372.7014.7340
372.6529.9357
372.60210.2601
372.584.0925
372.551.5443
372.501.7241
372.452.6215
372.403.5837
372.353.9210
372.302.1195
372.253.3884
372.204.1375
372.159.0858
372.106.7352
372.059.2706
372.009.8311
371.987.8378
371.956.0120
371.905.9034
371.856.1956
371.806.3607
371.757.4359
371.708.1622
371.657.2017
371.605.8168
371.577.2143
371.507.4631
371.454.9667
371.405.1357
371.306.7787
371.257.5865
371.207.9405
371.156.4936
371.105.9237
371.056.7339
371.007.8845
370.956.0173
370.904.2789
370.856.1627
370.808.1718
370.754.9939
370.706.0281
370.656.8914
370.6010.1599
370.556.0218
370.504.3667
370.456.6328
370.354.1613
370.253.3562
370.212.8776
370.152.6166
370.053.2700
370.005.0738
369.954.3172
369.902.3696
369.882.0953
369.852.7416
369.803.1866
369.753.3710
369.704.1102
369.653.9086
369.604.3365
369.552.7035
369.505.4086
369.455.4141
369.402.7015
369.353.3157
369.302.1907
369.252.5078
369.203.1591
369.153.3779
369.102.5379
369.053.9046
369.003.4259
368.983.4838
368.903.1786
368.803.4859
368.752.7713
368.704.1398
368.656.1741
368.604.1534
368.555.5651
368.507.3496
368.456.4218
368.403.6755
368.354.4550
368.303.6840
368.253.3018
368.204.5015
368.156.8041
368.105.9881
368.054.7104
368.003.9188
367.955.1463
367.905.1043
367.855.9720
367.805.4243
367.754.8476
367.705.1592
367.656.6373
367.606.1178
367.555.1697
367.505.4421
367.459.1208
367.405.5683
367.354.9216
367.307.3910
367.257.9426
367.207.5924
367.152.4077
367.103.2118
367.054.1459
367.005.3358
366.954.3345
366.903.4100
366.853.3656
366.805.1825
366.755.4550
366.704.2215
366.653.3217
366.606.0180
366.558.4425
366.453.7578
366.404.2437
366.354.3636
366.303.0557
366.257.7679
366.206.4516
366.155.2094
366.106.8503
366.056.5186
366.006.4146
365.955.4518
365.905.8545
365.854.9827
365.804.8902
365.758.2285
365.704.8660
365.655.0892
365.605.5625
365.556.1919
365.456.1673
365.406.9869
365.354.7791
365.3010.0365
365.257.1531