Citation:

S0146-6380(86)80027-4

Name: Alkenon concentrations of Creatcesous sediments of DSDP Hole 76-534A (Table 1)
Published: 1985
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

We here report the discovery of unusual distributions of long-chain alkenones (C37-C42) in two Cretaceous black shales from the Blake-Bahama Basin, western North Atlantic. These sediments are Cenomanian (c. 95 Ma) and mid-Albian (c. 105 Ma) in age, thus significantly extending the geological range of these compounds. The precise source of these lipids is, as yet, unknown, although they may derive from an ancient ancestor of Emiliania huxleyi.

Project(s):

Deep Sea Drilling Project (DSDP)

Coverage:

Latitude: 28.343300 * Longitude: -75.381700

Date/Time Start: 1980-10-21T00:00:00 * Date/Time End: 1980-10-21T00:00:00

Minimum DEPTH, sediment/rock: 766 m * Maximum DEPTH, sediment/rock: 832 m

Event(s):

76-534A * Latitude: 28.343300 * Longitude: -75.381700 * Date/Time: 1980-10-21T00:00:00 * Elevation: -4971.0 m * Penetration: 1666.5 m * Recovery: 612.4 m * Location: North Atlantic/BASIN * Campaign: * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 127 cores; 1113.1 m cored; 31.5 m drilled; 55 % recovery

Comment:

# = concentration estimated by mas fragmentography due to co-evolution. <1 = trace amount detected.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Farrimond, Paul	DSDP/ODP/IODP sample designation
2	Lithology/composition/facies	Lithology		Farrimond, Paul
3	DEPTH, sediment/rock	Depth sed	m			Geocode
4	Stage	Stage		Farrimond, Paul
5	Carbon, organic, total	TOC	%	Farrimond, Paul
6	Extract	Extract	µg/g	Farrimond, Paul		sediment
7	Alkenone, C37:2	C37:2	ng/g	Farrimond, Paul		sediment
8	Alkenone, C38:2	C38:2	ng/g	Farrimond, Paul		sediment
9	Alkenone, C39:2	K39:2	ng/g	Farrimond, Paul		sediment
10	Alkenone, C40:2	K40:2	ng/g	Farrimond, Paul		sediment
11	Alkenone, C41:2	K41:2	ng/g	Farrimond, Paul		sediment
12	Alkenone, C42:2	K42:2	ng/g	Farrimond, Paul		sediment
13	Alkenone per unit sediment mass	Alkenone/sed	µg/g	Farrimond, Paul		total, sediment
14	Extract	Extract	µg/g	Farrimond, Paul		extract
15	Alkenone, C37:2	C37:2	ng/g	Farrimond, Paul		extract
16	Alkenone, C38:2	C38:2	ng/g	Farrimond, Paul		extract
17	Alkenone, C39:2	K39:2	ng/g	Farrimond, Paul		extract
18	Alkenone, C40:2	K40:2	ng/g	Farrimond, Paul		extract
19	Alkenone, C41:2	K41:2	ng/g	Farrimond, Paul		extract
20	Alkenone, C42:2	K42:2	ng/g	Farrimond, Paul		extract
21	Alkenone per unit sediment mass	Alkenone/sed	µg/g	Farrimond, Paul		total, extract
22	Alkenones	Alk	%	Farrimond, Paul		total, extract
23	Average chain length	ACL		Farrimond, Paul
24	-	-		Farrimond, Paul		% ET =(Alkem-3-ones/(alken-3-ones + alken-2-ones))

License:

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

Size:

41 data points

Data

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

1 Sample label	2 Lithology	3 Depth sed [m]	4 Stage	5 TOC [%]	6 Extract [µg/g] (sediment)	7 C37:2 [ng/g] (sediment)	8 C38:2 [ng/g] (sediment)	9 K39:2 [ng/g] (sediment)	10 K40:2 [ng/g] (sediment)	11 K41:2 [ng/g] (sediment)	12 K42:2 [ng/g] (sediment)	13 Alkenone/sed [µg/g] (total, sediment)	14 Extract [µg/g] (extract)	15 C37:2 [ng/g] (extract)	16 C38:2 [ng/g] (extract)	17 K39:2 [ng/g] (extract)	18 K40:2 [ng/g] (extract)	19 K41:2 [ng/g] (extract)	20 K42:2 [ng/g] (extract)	21 Alkenone/sed [µg/g] (total, extract)	22 Alk [%] (total, extract)	23 ACL	24 - (% ET =(Alkem-3-ones/(alken-3-...)
76-534A-28-1	Black shale	766	Cenomanian	0.7	170	60	261.2	11.2	107.2	14.2	<1	0.4538	352.9	1536.0	66	630.5	83.3	<1	2669	0.27	0.27	38.54	83.9
76-534A-34-1	Black shale	832	mid-Albian	0.7	90	#5	22.8	28.6	18.0			#0.0750	259.1	325.3	205				#840	0.08	0.08	38.87	55.9