Asphalt Volcanism and Chemosynthetic Life in the Campeche Knolls, Gulf of Mexico

Science

Volumn 304, Issue 5673, 2004, Pages 999-1002

  MacDonald, I R ^a   Bohrmann, G ^b   Escobar, E ^c   Abegg, F ^b   Blanchon, P ^c   Blinova, V ^b   Bruckmann W ^d   Drews, M ^d   Eisenhauer, A ^d   Han, X ^e   Heeschen, K ^b   Meler, F ^b   Mortera, C ^c   Naehr, T ^a   Orcutt, B ^f   Bernard, B ^g   Brooks, J ^g   De Farago M ^h  

^a TEXAS A AND M UNIVERSITY CORPUS CHRISTI   (United States)

^b UNIVERSITY OF BREMEN   (Germany)

^c UNIVERSIDAD NACIONAL AUTÓNOMA DE MÉXICO   (Mexico)

^d GEOMAR HELMHOLTZ CENTRE FOR OCEAN RESEARCH KIEL   (Germany)

^e Chongqing Institute of Geology and Mineral Resources   (China)

^f UNIVERSITY OF GEORGIA   (United States)

^g TDI Brooks International   (United States)

^h Aurensis   (Spain)

Author keywords

[No Author keywords available]

Indexed keywords

ASPHALT; CARBONATES; GAS HYDRATES; SEA LEVEL; SEDIMENTS; SOLIDIFICATION;

CHEMOSYNTHETIC LIFE; LAVA-LIKE FLOWS; OIL SEEPS; SEA FLOORS;

VOLCANOES;

ASPHALT; CARBONIC ACID; OIL; HYDROCARBON; PETROLEUM; SEA WATER;

ASPHALT; LAVA FLOW; MOLLUSC; SALT DOME; TUBE DWELLER; VOLCANISM;

AQUATIC FAUNA; ARTICLE; BIVALVE; FREEZING; GAS; HABITAT STRUCTURE; MEXICO; NONHUMAN; OCEAN ENVIRONMENT; PRIORITY JOURNAL; SEDIMENT; SOLID STATE; VOLCANO; WATER TEMPERATURE; ANIMAL; ANNELID WORM; ANTHOZOA; BACTERIAL PHENOMENA AND FUNCTIONS; BIODIVERSITY; CRUSTACEA; ECOSYSTEM; ENVIRONMENT; FISH; INVERTEBRATE; MOLLUSC; PHYSIOLOGY;

ATLANTIC OCEAN; CAMPECHE BANK; GULF OF MEXICO;

BIVALVIA; MOLLUSCA;

ANIMALS; ANNELIDA; ANTHOZOA; BACTERIAL PHYSIOLOGY; BIODIVERSITY; BIVALVIA; CRUSTACEA; ECOSYSTEM; ENVIRONMENT; FISHES; GASES; GEOLOGIC SEDIMENTS; HYDROCARBONS; INVERTEBRATES; MOLLUSCA; PETROLEUM; SEAWATER; VOLCANIC ERUPTION;

EID: 2342563848     PISSN: 00368075     EISSN: None     Source Type: Journal    
DOI: 10.1126/science.1097154     Document Type: Article

References (20)

1. D. Macgregor, Mar. Petrol. Geol. 10, 606 (1993).
2. A. H. Bouma, R. Rezak, L. M. Jeffrey, Trans. Gulf Coast Assoc. Geol. Soc. 19, 115 (1969).
3. W. E. Pequegnat, L. M. Jeffrey, Contrib. Mar. Sci. 22, 63 (1978).
4. W. R. Bryant, J. Lugo, C. Cordova, A. Salvador, in The Gulf of Mexico Basin, A. Salvador, Ed. (Geological Society of America, Boulder, CO, 1991), vol. J., pp. 13-30.
5. T. E. Ewing, in The Gulf of Mexico Basin, A. Salvador, Ed. (Geological Society of America, Boulder, CO, 1991), vol. J., pp. 13-52.
6. J. M. Grajales-Nishimura et al., Geology 28, 307 (2000).
7. I. R. MacDonald et al., J. Geophys. Res. 98 C9, 16351 (1993).
8. Synthetic aperture radar images collected by RADAR-SAT and analyzed by NPA Group showed regular patterns of reduced backscatter produced by the dampening of capillary wavelets in elongate patches of floating oil. Repeated occurrences of these targets in the same locality are taken as robust evidence for oil discharge from the corresponding sea bed
9. Mapping was performed with a Simad EM 120 swath-mapping echosounder.
10. "Chapopote," derived from the Aztec language Nahuati, means "tar" in Mexican Spanish.
11. Samples of sediment (∼75 cc), including oil or asphalt components, were placed with 200 ml of clean seawater into 500-ml containers that were promptly sealed and stored frozen. Small pieces (∞5 cc) of gas hydrate received similar treatment, except that the headspace of the containers was purged with nitrogen before they were seated. Carbon content was determined by gas chromatography of headspace gases and solvent extracts of oil and asphalt.
12. G. A. Cole et al., World Oil (October), p. 69 (2001).
13. TDI-Brooks International, "2000 Central Gulf of Mexico Surface Geochemical Exploration," Tech. Report No. 01-698 (TDI-Brooks, College Station, TX 2001).
14. J. S. Hornaflus, D. Quigley, B. P. Luyendyk, J. Geophys. Res. 104 C9, 20 (1999).
15. I. R. MacDonald, W. W. Sager, M. B. Peccini, Mar. Geol. 198, 133 (2003).
16. P. Aharon, B. S. Fu, Geochim. Cosmochim. Acta 64, 233 (2000).
17. S. B. Joye et al., Chem. Geol., In press; published online 12 March 2004.
18. D. C. Bergquist et al., Mar. Ecol. Pubbl. Stn, Zool. Napoli I 24, 31 (2003).
19. E. D. Sloan Jr., Clathrate hydrates of Natural Gases (Marcel Dekker, New York, ed. 2, 1998). pp. 705.
20. This is publication GEOTECH-62 of the program GEOTECHNOLOGIEN and publication no. 130 of the Deutsche Forschungsgemeinschaft-Research Center "Ocean Margins" of the University of Bremen. RV Sonne cruise SO174 was supported by the German Federal Ministry of Education and Research (Bundesministerium für Bildung und Forschung; grant nos. 03G0174A and 03G0566A). Support for the Joint U.S. Mexican-German participation was provided by the NOAA Office of Ocean Exploration, NSF grant no. OCE-0085548, Universidad Nacional Autonoma de Mexico, and the Harte Research Institute. Also supported by the U.S. Department of Energy, National Energy Technology Laboratory (I.R.M.).