Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Geology Don't get GSW? Talk to your librarian.
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Geology; March 2001; v. 29; no. 3; p. 223-226; DOI: 10.1130/0091-7613(2001)029<0223:EFLJRO>2.0.CO;2
© 2001 Geological Society of America
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (48)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Padden, M.
Right arrow Articles by de Rafelis, M.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Evidence for Late Jurassic release of methane from gas hydrate

Maureen Padden1, Helmut Weissert1 and Marc de Rafelis2

1 Geological Institute, ETH-Zurich, 8092 Zurich, Switzerland
2 Laboratoire de Géologie des Bassins Sédimentaires, Université P. et M. Curie, 75252 Paris Cedex 05, France

Four Late Jurassic carbonate successions deposited in the Tethys-Atlantic Ocean record a negative carbon isotope excursion of at least 2{per thousand}. The excursion is present in both organic and carbonate carbon records and is comparable in magnitude and duration to isotopic changes during the late Paleocene thermal maximum. Our results indicate that during the Late Jurassic, long considered a warm greenhouse time, additional greenhouse gas was input to the atmosphere by a sudden release of methane from buried gas hydrate. A potential triggering mechanism may have been the opening of an oceanic gateway through the early Atlantic between the ancient Tethys and Pacific Oceans.

Key Words: Late Jurassic • gas hydrate • carbon cycle • paleoclimate




This article has been cited by other articles:


Home page
 Journal of the Geological SocietyHome page
H. Weissert, H. Weissert, and E. Erba
Volcanism, CO2 and palaeoclimate: a Late Jurassic-Early Cretaceous carbon and oxygen isotope record
Journal of the Geological Society, July 1, 2004; 161(4): 695 - 702.
[Abstract] [Full Text] [PDF]

Home page
 ajsHome page
G. Dromart, J.-P. Garcia, F. Gaumet, S. Picard, M. Rousseau, F. Atrops, C. Lecuyer, and S. M. F. Sheppard
Perturbation of the carbon cycle at the Middle/Late Jurassic transition: Geological and geochemical evidence
Am J Sci, October 1, 2003; 303(8): 667 - 707.
[Abstract] [Full Text] [PDF]

Home page
 Geological MagazineHome page
G. D. Price and G. D. PRICE
New constraints upon isotope variation during the early Cretaceous (Barremian-Cenomanian) from the Pacific Ocean
Geological Magazine, September 1, 2003; 140(5): 513 - 522.
[Abstract] [Full Text] [PDF]

Home page
 Journal of the Geological SocietyHome page
H. C. Jenkyns, H. C. Jenkyns, C. E. Jones, D. R. GrOcke, S. P. Hesselbo, and D. N. Parkinson
Chemostratigraphy of the Jurassic System: applications, limitations and implications for palaeoceanography
Journal of the Geological Society, July 1, 2002; 159(4): 351 - 378.
[Abstract] [Full Text] [PDF]

Home page
 ajsHome page
D. J. Beerling, M. R. Lomas, and D. R. Grocke
On the nature of methane gas-hydrate dissociation during the Toarcian and Aptian Oceanic anoxic events
Am J Sci, January 1, 2002; 302(1): 28 - 49.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2008 by Geological Society of America