Citation:

j.quascirev.2006.03.014

Name: Age determination of ODP Site 165-1002
Published: 2006
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

An expanded Cariaco Basin 14C chronology is tied to 230Th-dated Hulu Cave speleothem records in order to provide detailed marine-based 14C calibration for the past 50,000 years. The revised, high-resolution Cariaco 14C calibration record agrees well with data from 230Th-dated fossil corals back to 33 ka, with continued agreement despite increased scatter back to 50 ka, suggesting that the record provides accurate calibration back to the limits of radiocarbon dating. The calibration data document highly elevated Delta14C during the Glacial period. Carbon cycle box model simulations show that the majority of observed Delta14C change can be explained by increased 14C production. However, from 45 to 15 ka, Delta14C remains anomalously high, indicating that the distribution of radiocarbon between surface and deep ocean reservoirs was different than it is today. Additional observations of the magnitude, spatial extent and timing of deep ocean Delta14C shifts are critical for a complete understanding of observed Glacial Delta14C variability.

Project(s):

Ocean Drilling Program (ODP)

Coverage:

Latitude: 10.706100 * Longitude: -65.169617

Date/Time Start: 1996-02-18T00:00:00 * Date/Time End: 1996-02-20T00:00:00

Minimum DEPTH, sediment/rock: 0.063 m * Maximum DEPTH, sediment/rock: 27.923 m

Event(s):

165-1002 * Latitude: 10.706100 * Longitude: -65.169617 * Date/Time Start: 1996-02-18T00:00:00 * Date/Time End: 1996-02-20T00:00:00 * Elevation: -892.9 m * Penetration: 516.6 m * Recovery: 529.3 m * Location: Cayman Rise, Caribbean Sea * Campaign: * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 57 cores; 516.6 m cored; 0 m drilled; 102.5% recovery

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Hughen, Konrad A	DSDP/ODP/IODP sample designation
2	DEPTH, sediment/rock	Depth sed	m			Geocode
3	Sample code/label 2	Sample label 2		Hughen, Konrad A		AMS Lab ID#
4	Age, dated material	Dated material		Hughen, Konrad A
5	Calendar age	Cal age	ka BP	Hughen, Konrad A		CB-Hulu Calendar Age
6	Calendar age, standard deviation	Cal age std dev	±	Hughen, Konrad A		Hulu 230Th Cal Age
7	Calendar age, standard deviation	Cal age std dev	±	Hughen, Konrad A		CB_Hulu Resolution Cal Age, Calendar ages to 11000 are approx
8	Calendar age, standard deviation	Cal age std dev	±	Hughen, Konrad A		CB_Hulu Correlation Cal Age
9	Calendar age, standard deviation	Cal age std dev	±	Hughen, Konrad A		CB_ Hulu Cal Age Total
10	Age, dated	Age dated	ka	Hughen, Konrad A	Age, 14C AMS	Cariaco 14C age
11	Age, dated	Age dated	ka	Hughen, Konrad A	Age, 14C milieu/reservoir corrected	Cariaco 14C age (reserv. correct.)
12	Age, dated standard deviation	Age dated std dev	±	Hughen, Konrad A		Cariaco 14C
13	Δ14C	Δ14C	‰	Hughen, Konrad A		Cariaco 14C
14	Δ14C, standard deviation	Δ14C std dev	±	Hughen, Konrad A		Cariaco 14C
15	Comment	Comment		Hughen, Konrad A
16	Comment 2 (continued)	Comm 2		Hughen, Konrad A		deleted
17	Age, dated	Age dated	ka	Hughen, Konrad A		Cariaco average 14C age (reserv. correct.)
18	Age, dated standard deviation	Age dated std dev	±	Hughen, Konrad A		Cariaco average 14C age (reserv. correct.)
19	Δ14C	Δ14C	‰	Hughen, Konrad A		Cariaco average
20	Δ14C, standard deviation	Δ14C std dev	±	Hughen, Konrad A		Cariaco average

License:

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

Size:

7383 data points

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