U/Th dating of cold-seep carbonates: An initial comparison

Dong Feng; Harry H. Roberts; Hai Cheng; Jörn Peckmann; Gerhard Bohrmann; R. Lawrence Edwards; Duofu Chen

doi:10.1016/j.dsr2.2010.09.004

U/Th dating of cold-seep carbonates: An initial comparison

Dong Feng
, Harry H. Roberts
, Hai Cheng
, Jörn Peckmann
, Gerhard Bohrmann
, R. Lawrence Edwards
, Duofu Chen

School of Human Settlements and Civil Engineering

Research output: Contribution to journal › Article › peer-review

61 Scopus citations

Abstract

Authigenic carbonates from hydrocarbon seeps are unique archives of past seepage and associated environmental parameters. In order to constrain the ages of a set of seep carbonates and the time involved in carbonate formation, we applied Uranium/Thorium (U/Th) dating to samples from the Gulf of Mexico, the Congo Fan, and the Black Sea. The resulting U/Th ages indicate that environmental conditions must have been favorable for enhanced methane-rich fluid seepage during the time intervals of 53.4 to 1.7 ka. BP for the Gulf of Mexico and 45.5 to 3.0. ka. BP for the Congo Fan. The seep carbonates from the Black Sea formed at 1.6 to 1.1. ka BP. Our results suggest that enhanced fluid flow during these time intervals was closely related to 1) sea-level variations associated with glacial/interglacial cycles and 2) environmental alterations in the course of Late Quaternary climate change, including variations in bottom-water temperatures that affected the stability of gas hydrate reservoirs.

Original language	English
Pages (from-to)	2055-2060
Number of pages	6
Journal	Deep-Sea Research Part II: Topical Studies in Oceanography
Volume	57
Issue number	21-23
DOIs	https://doi.org/10.1016/j.dsr2.2010.09.004
State	Published - Nov 2010

Keywords

Authigenic carbonate
Black Sea
Cold seeps
Congo Fan
Gulf of Mexico
U/Th dating

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.dsr2.2010.09.004

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title = "U/Th dating of cold-seep carbonates: An initial comparison",

abstract = "Authigenic carbonates from hydrocarbon seeps are unique archives of past seepage and associated environmental parameters. In order to constrain the ages of a set of seep carbonates and the time involved in carbonate formation, we applied Uranium/Thorium (U/Th) dating to samples from the Gulf of Mexico, the Congo Fan, and the Black Sea. The resulting U/Th ages indicate that environmental conditions must have been favorable for enhanced methane-rich fluid seepage during the time intervals of 53.4 to 1.7 ka. BP for the Gulf of Mexico and 45.5 to 3.0. ka. BP for the Congo Fan. The seep carbonates from the Black Sea formed at 1.6 to 1.1. ka BP. Our results suggest that enhanced fluid flow during these time intervals was closely related to 1) sea-level variations associated with glacial/interglacial cycles and 2) environmental alterations in the course of Late Quaternary climate change, including variations in bottom-water temperatures that affected the stability of gas hydrate reservoirs.",

keywords = "Authigenic carbonate, Black Sea, Cold seeps, Congo Fan, Gulf of Mexico, U/Th dating",

author = "Dong Feng and Roberts, \{Harry H.\} and Hai Cheng and J{\"o}rn Peckmann and Gerhard Bohrmann and \{Lawrence Edwards\}, R. and Duofu Chen",

year = "2010",

month = nov,

doi = "10.1016/j.dsr2.2010.09.004",

language = "英语",

volume = "57",

pages = "2055--2060",

journal = "Deep-Sea Research Part II: Topical Studies in Oceanography",

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TY - JOUR

T1 - U/Th dating of cold-seep carbonates

T2 - An initial comparison

AU - Feng, Dong

AU - Roberts, Harry H.

AU - Cheng, Hai

AU - Peckmann, Jörn

AU - Bohrmann, Gerhard

AU - Lawrence Edwards, R.

AU - Chen, Duofu

PY - 2010/11

Y1 - 2010/11

N2 - Authigenic carbonates from hydrocarbon seeps are unique archives of past seepage and associated environmental parameters. In order to constrain the ages of a set of seep carbonates and the time involved in carbonate formation, we applied Uranium/Thorium (U/Th) dating to samples from the Gulf of Mexico, the Congo Fan, and the Black Sea. The resulting U/Th ages indicate that environmental conditions must have been favorable for enhanced methane-rich fluid seepage during the time intervals of 53.4 to 1.7 ka. BP for the Gulf of Mexico and 45.5 to 3.0. ka. BP for the Congo Fan. The seep carbonates from the Black Sea formed at 1.6 to 1.1. ka BP. Our results suggest that enhanced fluid flow during these time intervals was closely related to 1) sea-level variations associated with glacial/interglacial cycles and 2) environmental alterations in the course of Late Quaternary climate change, including variations in bottom-water temperatures that affected the stability of gas hydrate reservoirs.

AB - Authigenic carbonates from hydrocarbon seeps are unique archives of past seepage and associated environmental parameters. In order to constrain the ages of a set of seep carbonates and the time involved in carbonate formation, we applied Uranium/Thorium (U/Th) dating to samples from the Gulf of Mexico, the Congo Fan, and the Black Sea. The resulting U/Th ages indicate that environmental conditions must have been favorable for enhanced methane-rich fluid seepage during the time intervals of 53.4 to 1.7 ka. BP for the Gulf of Mexico and 45.5 to 3.0. ka. BP for the Congo Fan. The seep carbonates from the Black Sea formed at 1.6 to 1.1. ka BP. Our results suggest that enhanced fluid flow during these time intervals was closely related to 1) sea-level variations associated with glacial/interglacial cycles and 2) environmental alterations in the course of Late Quaternary climate change, including variations in bottom-water temperatures that affected the stability of gas hydrate reservoirs.

KW - Authigenic carbonate

KW - Black Sea

KW - Cold seeps

KW - Congo Fan

KW - Gulf of Mexico

KW - U/Th dating

UR - https://www.scopus.com/pages/publications/78349241372

U2 - 10.1016/j.dsr2.2010.09.004

DO - 10.1016/j.dsr2.2010.09.004

M3 - 文章

AN - SCOPUS:78349241372

SN - 0967-0645

VL - 57

SP - 2055

EP - 2060

JO - Deep-Sea Research Part II: Topical Studies in Oceanography

JF - Deep-Sea Research Part II: Topical Studies in Oceanography

IS - 21-23

ER -

U/Th dating of cold-seep carbonates: An initial comparison

Abstract

Keywords

UN SDGs

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