Early Triassic oceanic red beds coupled with deep sea oxidation in South Tethys

Turonian Oceanic Red Beds in the Eastern Alps: Concepts for palaeoceanographic changes in the Mediterranean Tethys

Several transitions of Lower to Middle Turonian pelagic marl–limestone-cycles into Oceanic Red Beds were studied at high resolution to gain a better understanding of the Tethyan marine system before and during red bed initiation and development. Samples were analysed for mineralogy, geochemistry, and stable isotope composition. In particular, carbonate geochemistry of diagenetically largely una...

Geochemistry of Cretaceous Oceanic Red Beds — A synthesis

Cretaceous oceanic red beds as possible consequence of oceanic anoxic events

a State Key Laboratory of Geological Processes and Mineral Resources, China University of Geosciences, Beijing 100083, China b Department of Earth Sciences, Nanjing University, Nanjing 210093, China c Department of Geodynamics and Sedimentology, University of Vienna, A-1090 Vienna, Austria d University of Tulsa, 149 West Ridge Road, Cleveland, OK 74020, USA e Department of Geological Sciences, ...

Cosmic Spherules from Triassic Deep-sea Sediments in Japan

Introduction: Cosmic spherules are subspherical to spherical particles of <1 mm diameter which are produced by melting of interplanetary dust and large objects during atmospheric entry. Although cosmic spherules are known principally from the ice sheets of polar regions and Cenozoic deep-sea sediments [1-3], a few spherules older than Mesozoic were recovered from the sedimentary rocks of pelagi...

Community structure of mussel beds at deep-sea hydrothermal vents

Definition of biogeographic provinces, patterns of species distributions on local and regional scales, species richness, and relative abundances are all basic ecological measures, yet they are largely unknown for deep-sea hydrothermal vent ecosystems. Without an appreciation of biogeographic and biodiversity patterns, it is difficult to understand the evolutionary and ecological processes that ...