Citation:

98PA00671

Name: (Table 1) Age determination of sediment core BC5, Golf of Lion
Published: 1998
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

Hitherto unknown abundance peaks of left coiling (l.c.) Neogloboquadrina pachyderma from a Gulf of Lions piston core indicate that abrupt cold spells associated with Atlantic Heinrich events affected the Mediterranean. N. pachyderma (l.c.) is typical of (sub) polar waters in the open ocean. The southern edge of its glacial North Atlantic bioprovince reached south Portugal. Only trace abundances of N. pachyderma (l.c.) are known from Quaternary Mediterranean sediments, suggesting that no significant "invasions" occured via the Strait of Gibraltar. The Gulf of Lions abundance peaks therefore seem to reflect area-specific thriving of a normally rare but indigenous taxon in the western Mediterranean through local favorable habitat development. The general planktonic foraminiferal record suggests that the basic hydrographic regime in the Gulf of Lions, with wintertime deep convective overturn, was relatively stable over the past 60 kyr. Under these conditions, high abundances of N. pachyderma (l.c.) would essentially imply temperature reductions of the order of 5°-8° relative to the present.

Related to:

Duplessy, Jean-Claude; Arnold, Maurice; Maurice, Pierre; Bard, Edouard; Duprat, Josette M; Moyes, Jean (1986): Direct dating of the oxygen-isotope record of the last deglaciation by 14C accelerator mass spectrometry. Nature, 320, 350-352, https://doi.org/10.1038/320350a0

Fairbanks, Richard G (1989): A 17,000-year glacio-eustatic sea level record: influence of glacial melting rates on the Younger Dryas event and deep-ocean circulation. Nature, 342(6250), 637-642, https://doi.org/10.1038/342637a0

Jorissen, Frans J; Asioli, Alessandra; Borsetti, Anna Maria; Capotondi, Lucilla; de Visser, J P; Hilgen, Frederik J; Rohling, Eelco J; van de Borg, K; Vergnaud-Grazzini, Colette; Zachariasse, Willem-Jan (1993): Late Quaternary central Mediterranean biochronology. Marine Micropaleontology, 21(1-3), 169-189, https://doi.org/10.1016/0377-8398(93)90014-O

Martinson, Douglas G; Pisias, Nicklas G; Hays, James D; Imbrie, John D; Moore, Theodore C; Shackleton, Nicholas J (1987): Age Dating and the orbital theory of the ice ages: development of a high-resolution 0 to 300,000-year chronostratigraphy. Quaternary Research, 27, 1-29, https://doi.org/10.1016/0033-5894(87)90046-9

Muerdter, David R; Kennett, James P (1984): Late Quaternary planktonic foraminiferal biostratrigraphy, Strait of Sicily, Mediterranean Sea. Marine Micropaleontology, 8(5), 339-359, https://doi.org/10.1016/0377-8398(84)90001-X

Pujol, Claude; Vergnaud-Grazzini, Colette (1989): Paleoceanography of the last deglaciation in the Alboran Sea. Marine Micropaleontology, 15(1-2), 153-179, https://doi.org/10.1016/0377-8398(89)90009-1

Rohling, Eelco J; Jorissen, Frans J; Vergnaud-Grazzini, Colette; Zachariasse, Willem-Jan (1993): Northern Levatine and Adriatic planktonic foraminifera: reconstruction of paleoenvironmental gradients. Marine Micropaleontology, 21(1-3), 191-218, https://doi.org/10.1016/0377-8398(93)90015-P

Coverage:

Latitude: 41.950000 * Longitude: 5.933330

Minimum DEPTH, sediment/rock: 0.0425 m * Maximum DEPTH, sediment/rock: 4.7575 m

Event(s):

BC5 * Latitude: 41.950000 * Longitude: 5.933330 * Elevation: -2500.0 m * Location: Golf of Lion * Method/Device: Box corer (BC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Laboratory code/label	Lab label		Rohling, Eelco J
2	Ageprofile Datum Description	Ageprof dat des		Rohling, Eelco J
3	DEPTH, sediment/rock	Depth sed	m	Rohling, Eelco J		Geocode
4	Age, dated	Age dated	ka	Rohling, Eelco J	Age, 14C AMS
5	Age, dated standard deviation	Age dated std dev	±	Rohling, Eelco J	Age, 14C AMS
6	Age, dated	Age dated	ka	Rohling, Eelco J	Age, 14C milieu/reservoir corrected (-400 yr)
7	Calendar age	Cal age	ka BP	Rohling, Eelco J
8	Reference/source	Reference		Rohling, Eelco J
9	Age, comment	Comm		Rohling, Eelco J

License:

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

Size:

83 data points

Data

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

1 Lab label	2 Ageprof dat des	3 Depth sed [m]	4 Age dated [ka] (Age, 14C AMS)	5 Age dated std dev [±] (Age, 14C AMS)	6 Age dated [ka] (Age, 14C milieu/reservoir cor...)	7 Cal age [ka BP]	8 Reference	9 Comm
UTC4468		0.0425	14.15	0.08	9.75	10.99		converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
UTC4469		0.6475	14.67	0.09	14.27	17.11		converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
UTC4470		1.7525	27.38	0.24	26.98	31.20		a lack of calibration allows only a minimum conversion using a constant offset of ~+3.2 kyrs, i.e., the difference between 14C, and calendar years at 22 ka BP (Manighetti et al., 1995);
UTC4470		2.5625	31.60	0.40	31.20	34.40		a lack of calibration allows only a minimum conversion using a constant offset of ~+3.2 kyrs, i.e., the difference between 14C, and calendar years at 22 ka BP (Manighetti et al., 1995);
	EndT1b	0.0425			9.20	10.30	Fairbanks (1998)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	EndT1b	0.0425			9.40	10.50	Jorissen et al. (1993)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	EndT1b	0.0425			9.50	10.80	Duplessy et al. (1986)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	Onset deglaciation	0.6475			14.50	17.40	Pujol and Vergnaud-Grazzini (1989)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	Onset deglaciation	0.6475			14.60	17.50	Jorissen et al. (1993)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	Stage 2/3 boundary (3.0)	1.1725				24.00	Martinson et al. (1987)	no conversion needed as date was obtained in calendar years through orbital tuning (Martinson et al., 1987).
	Event 3.1	1.2725				25.40	Martinson et al. (1987)	no conversion needed as date was obtained in calendar years through orbital tuning (Martinson et al., 1987).
	Stage 3/4 boundary (4.0)	4.7575				59.00	Martinson et al. (1987)	no conversion needed as date was obtained in calendar years through orbital tuning (Martinson et al., 1987).
	Exit Globorotalia scitula and peal G. truncatulinoides	0.3225	#13.00		#12.60	#14.80	Jorissen et al. (1993)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	Entry Globorotalia inflata	0.3775	#14.00		#13.60	#16.30	Jorissen et al. (1993)	converted into calendar years (Cal) with program Calib3.03 (Stuiver and Reimer, 1993) using calibration data set 3 and with Deltar = 0 since we infer a reservoir age of 400 years
	Exit G. inflata	2.2975			#30.00	#33.00	Rohling et al. (1983)	a lack of calibration allows only a minimum conversion using a constant offset of ~+3.2 kyrs, i.e., the difference between 14C, and calendar years at 22 ka BP (Manighetti et al., 1995);
	Exit G. inflata	2.2975			#36.00	#39.00	Muerdter and Kennett (1983)	a lack of calibration allows only a minimum conversion using a constant offset of ~+3.2 kyrs, i.e., the difference between 14C, and calendar years at 22 ka BP (Manighetti et al., 1995);