DSDP Leg

DSDP Leg 76) Samples [Pg.545]

DSDP Leg 84) [Pg.548]

Table 7.8 suggests that hydrates are commonly found in the oceans, yet care must be exercised, because BSRs are not reliable as sole indicators of hydrates. For example, Finley and Krason (1986a) indicate Sites 490, 498, 565, and 570 on DSDP Leg 84 in the MAT where hydrates were recovered without BSRs present. Conversely, BSRs existed beneath Sites 496 and 569, yet no hydrates were... 

Barret T. J. and Friedrichsen H. (1982) Strontium and oxygen isotopic composition of some basalts from Hole 504B, Costa Rica Rift, DSDP Legs 69 and 70. Earth Planet Sci. Lett. 60, 27-38. 

Barrett T. J., Taylor P. N., and Lugowski J. (1987) MetaUiferous sediments from DSDP leg 92, the East Pacific rise transect. Geochim. Cosmochim. Acta 51, 2241-2253. 

Walvis Ridge. DSDP Leg 40, Initial Reports. DSDP Legs 38, 39, 40, and 41, SuppL, pp. 627-637. 

Brumsack H.-J. (1986) The inorganic geochemistry of Cretaceous black shales (DSDP Leg 41) in comparison to modern upwelling sediments from the Gulf of California. In North Atlantic Palaeoceanography, Geological Society Special Publication. No. 21, (eds. C. P. Summerhayes and N. J. Shackleton), pp. 447-462. 

Pisciotto, K.A. Mahoney, J. J. (1981) Isotopic survey of diagenetic carbonates. DSDP Leg 63. In Initial Reports of tlK Deep Sea Drilling Project (Eds Yeats, R. et al), 63, 595-609. US Government Printing Office, Washington, DC. 

Cornford, C., Rullkotter, J. and Welte, D., 1979. Organic geochemistry of DSDP Leg 47a, Site 397, eastern North Atlantic Organic petrography and extractable... 

Lalou, C., Brichet, E., Jehanno, C. and Perez-Leclaire, H., 1983. Hydrothermal manganese oxide deposits from Galapagos mounds, DSDP Leg 70, hole 509B and Alvin dives 729 and 721. Earth and Planetary Science Letters, 63 63-75. 

Hesse, R., Lebel, J., and Gieskes, J.M., 1985. Intersitial water chemistry of gas-hydrate bearing sections on the Middle America trench slope, DSDP Leg 84, in von Huene, R., and Aubouin, J., eds., Inital Reports of DSDP, Volume 84 Washington, U.S. Governmental Printing Office, p. 727-737. 

Duncan R. A. and Jackson E. D. (1977) Geochronology of basaltic rocks recovered by DSDP Leg 41, Eastern Atlantic Ocean. In Initial Reports of the Deep Sea Drilling Project (eds. Y. Lancelot, E. Seibold, W. E. Dean, L. F. Jansa,... 

Kidd R. B., CIta M. B. and Ryan W. B. F. (1978) Stratigraphy of eastern Mediterranean sapropel sequences recovered during DSDP Leg 42A and their paleoenvironmental significance. Initial Rep. DSDP 42A, 421 -443. 

Ice-free oceans are involved. Not much information is available from deep-sea cores at more than a 100 sites from DSDP Legs 1-75 penetrating the Cretaceous and yielding foraminifera. A temperature maximum based on <5 0 values from belemnites at paleolatitudes considered to... 

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