Citation:

PANGAEA.918260

Name: Latest Pleistocene-Holocene n-alkane data from an alpine lake, Laguna de Río Seco, in southern Spain
Published: 2020-06-03
License: https://creativecommons.org/licenses/by/4.0/
Keywords: n-alkanes; southern Iberian Peninsula; Western Mediterranean

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Abstract:

This dataset contains the n-alkane data from a sedimentary record of an alpine lake (Laguna de Río Seco -LdRS-) located at 3020 masl in Sierra Nevada (southern Spain). This dataset includes the concentrations of the n-alkanes ranging from the C19 to the C35 chain lengths and the hydrogen isotopic composition of the C23, C25, C27, C29, C31, and C33 ones. Different indices have also been calculated to summarise 1) the n-alkane chain lengths: the average chain length (ACL), the carbon preference index (CPI), and the portion aquatic index (Paq), and 2) the hydrogen isotopic composition of the terrestrial n-alkanes (δDwax=δDC29 + δDC31), aquatic n-alkanes (δDaq= δDC23 + δDC25), and their difference ΔDwax-aq(δDwax-δDaq).

The n-alkanes were analysed using a GC-FID (Shimadzu 2010) and a GC-MS (Shimadzu QP2010-Plus Mass Spectrometer interfaced with a Shimadzu 2010 GC).

Hydrogen isotopic composition of sedimentary n-alkanes was measured with GC-IRMS using a GC-thermal conversion-IRMS system consisting of a HP 6890 GC connected to a Finnigan MAT delta Plus XL mass spectrometer.

Keyword(s):

n-alkanes; southern Iberian Peninsula; Western Mediterranean

Coverage:

Latitude: 37.053100 * Longitude: -3.346700

Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 1.475 m

Event(s):

Laguna_de_Rio_Seco * Latitude: 37.053100 * Longitude: -3.346700 * Elevation: 3020.0 m * Location: Sierra Nevada, Spain * Method/Device: Sediment sample (SES)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Laboratory code/label	Lab label		García-Alix, Antonio
2	DEPTH, sediment/rock	Depth sed	m	García-Alix, Antonio		Geocode – sampling depth
3	Depth, corrected	Depth corr	m	García-Alix, Antonio		real depth
4	AGE	Age	ka BP	García-Alix, Antonio		Geocode
5	n-Alkane C19, per unit sediment mass	C19/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
6	n-Alkane C20, per unit sediment mass	C20/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
7	n-Alkane C21, per unit sediment mass	C21/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
8	n-Alkane C22, per unit sediment mass	C22/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
9	n-Alkane C23, per unit sediment mass	C23/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
10	n-Alkane C24, per unit sediment mass	C24/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
11	n-Alkane C25, per unit sediment mass	C25/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
12	n-Alkane C26, per unit sediment mass	C26/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
13	n-Alkane C27, per unit sediment mass	C27/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
14	n-Alkane C28, per unit sediment mass	C28/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
15	n-Alkane C29, per unit sediment mass	C29/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
16	n-Alkane C30, per unit sediment mass	C30/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
17	n-Alkane C31, per unit sediment mass	C31/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
18	n-Alkane C32, per unit sediment mass	C32/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
19	n-Alkane C33, per unit sediment mass	C33/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
20	n-Alkane C34, per unit sediment mass	C34/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
21	n-Alkane C35, per unit sediment mass	C35/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
22	n-Alkane, total per unit sediment mass	n-Alkane tot/sed	µg/g	García-Alix, Antonio	Gas chromatography - Flame Ionization Detection (GC-FID) and Gas chromatography - Mass spectrometry (GC-MS)
23	Carbon Preference Index, n-Alkanes (C25-C33)	CPI 25-33		García-Alix, Antonio	Calculated
24	Average chain length, n-Alkanes, C25-C33	ACL 25-33		García-Alix, Antonio	Calculated
25	Aquatic portion	Paq		García-Alix, Antonio	Calculated
26	n-Alkane C23, δD	C23 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW
27	n-Alkane C23, δD, standard deviation	C23 δD std dev	±	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
28	n-Alkane C25, δD	C25 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW
29	n-Alkane C25, δD, standard deviation	C25 δD std dev	±	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
30	n-Alkane C27, δD	C27 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW
31	n-Alkane C27, δD, standard deviation	C27 δD std dev	±	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
32	n-Alkane C29, δD	C29 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW
33	n-Alkane C29, δD, standard deviation	C29 δD std dev	±	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
34	n-Alkane C31, δD	C31 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW
35	n-Alkane C31, δD, standard deviation	C31 δD std dev	±	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
36	n-Alkane C33, δD	C33 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW
37	n-Alkane C33, δD, standard deviation	C33 δD std dev	±	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)
38	n-Alkane C23,C25, δD	C23,C25 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW, δDaq=δDC23+δDC25
39	n-Alkane C29,C31, δD	C29,C31 δD	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW, δDwax=δDC29+δDC31
40	n-Alkane, ΔδD ((C29,C31 δD)-(C23,C25 δD))	n-Alkane ΔδD ((C29,C31 δD)-(C23,C25 δD))	‰ SMOW	García-Alix, Antonio	Gas chromatography - Isotope ratio mass spectrometer (GC-IRMS)	‰VSMOW, ΔδD=δDwax-δDaq

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Size:

2618 data points

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