490 datasets found

Although land studies have identified major volcanic centers of historic eruptions within the Central Andes, the tephrachronologic record is disturbed by the high erosion rates...

Shipboard investigation of magnetostratigraphy and shore-based investigation of diatoms and calcareous nannofossils were used to identify datum events in sedimentary successions...

Organic matter deposited and buried under the seafloor is one of the major carbon sources for microbial life in the deep subsurface of the ocean. In this report, we present a...

High-resolution analyses of the oxygen isotope ratio (18O/16O) of dissolved sulfate in pore waters have been made to depths of >400 meters below seafloor (mbsf) at open-ocean...

This study addresses the problem of diagenetic fractionation of d15N in sedimentary organic matter by constructing isotopic mass balances for the sedimentary nitrogen and pore...

Early diagenetic dolomite beds were sampled during the Ocean Drilling Programme (ODP) Leg 201 at four reoccupied ODP Leg 112 sites on the Peru continental margin (Sites...

The first experimentally determined temperature dependent oxygen-18 fractionation factor between dolomite and water at low temperatures [Vasconcelos et al. 1995...

Sorption of volatile hydrocarbon gases (VHCs) to marine sediments is a recognized phenomenon that has been investigated in the context of petroleum exploration. However, little...

Marine sediments harbor an enormous quantity of microorganisms, including a multitude of novel species. The habitable zone of the marine sediment column begins at the...

Global shallow sediment diagenesis survey results based on all available IODP sediment core images.