Fluctuations in biosiliceous production and the generation of Early Cretaceous oceanic anoxic events in the Pacific Ocean (Shatsky Rise, Ocean Drilling Program Leg 198)
نویسندگان
چکیده
منابع مشابه
An immense shield volcano within the Shatsky Rise oceanic plateau, northwest Pacific Ocean
Most oceanic plateaux are massive basaltic volcanoes. However, the structure of these volcanoes, and how they erupt and evolve, is unclear, because they are remote and submerged beneath the oceans. Here we use multichannel seismic profiles and rock samples taken from Integrated Ocean Drilling Program core sites to analyse the structure of the Tamu Massif, the oldest and largest edifice of the S...
متن کاملThe seismic Moho structure of Shatsky Rise oceanic plateau, northwest Pacific Ocean
a Key Laboratory of Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, Guangdong 510301, China b Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX 77204, USA c Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA d Department of Oceanography, Texas A&M University, College Station, TX 77...
متن کاملOceanic oxygenation events in the anoxic Ediacaran ocean.
The ocean-atmosphere system is typically envisioned to have gone through a unidirectional oxygenation with significant oxygen increases in the earliest (ca. 635 Ma), middle (ca. 580 Ma), or late (ca. 560 Ma) Ediacaran Period. However, temporally discontinuous geochemical data and the patchy metazoan fossil record have been inadequate to chart the details of Ediacaran ocean oxygenation, raising ...
متن کاملOcean Drilling Program Leg 135 Preliminary Report
Leg 135 of the Ocean Drilling Program drilled and cored eight sites across the Lau Basin and adjacent Tonga Ridge to study the geological evolution of a backarc basin and adjacent oceanic arc and forearc. Six sites (Sites 834, 835, 836, 837, 838, and 839) were drilled within the Lau Basin, each within smaller and narrower (<10 km) north-south fault basins and collectively representing a broad e...
متن کاملIntroduction and Paleontology of the Middle Tethys Ocean rudists in the Lower Cretaceous in Central Iran
This research for introduce and paleontology of Early Cretaceous Rudist in the Middle Tethys Ocean, stratigraphic section of the kalleh pahnoo has been selected from the Shahkouh Formation in Central Iran (Khor and Biabank region). The studied section consists of 120 m thin layer to massive limestone. Studies on 106 specimens collected and prepared from this section have led to the identific...
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ژورنال
عنوان ژورنال: Paleoceanography
سال: 2004
ISSN: 0883-8305
DOI: 10.1029/2004pa001010