A new marine ecosystem model designed for the global domain is presented, and model output is compared with field data from nine different locations. Field data were collected as part of the international Joint Global Ocean Flux Study (JGOFS) program, and from historical time series stations. The field data include a wide variety of marine ecosystem types, including nitrogenand iron-limited sys...

Many aquatic ecosystems are sustained by detrital subsidies of leaf litter derived from exogenous sources. Although numerous studies have examined the effects of litter species richness and identity on decomposition processes, it remains unclear how these effects extend to associated invertebrate communities or how these effects vary spatially according to local environmental context. Using fie...

The enrichment and depletion of redox sensitive trace metals in marine sediments have been used extensively as paleoredox proxies. The trace metals in shale are comprised of both detrital (transported or particulate) and authigenic (precipitated, redox-driven) constituents, potentially complicating the use of this suite of proxies. Untangling the influence of these components is vital for the i...

The Cryogenian–Ediacaran strata in the Kuruktag block, northeastern Tarim Craton, are pivotal for deciphering breakup of Neoproterozoic Rodinia and related peripheral subduction processes. This study reveals previously unidentified Ediacaran western characterized by deltaic plain clastic rocks channel deposits. Zircon geochronological analyses basalts sandstones indicate a maximum depositional ...

Seven hundred and nineteen samples from throughout the Cainozoic section in CRP-3 were analysed by a Malvern Mastersizer laser particle analyser, in order to derive a stratigraphic distribution of grain-size parameters downhole. Entropy analysis of these data (using the method of Woolfe & Michibayashi, 1995) allowed recognition of four groups of samples, each group characterised by a distinctiv...

Porosity and permeability define the reservoir quality of a sandstone. are controlled by primary sedimentary characteristics subsequent diagenetic modification. Grain size, sorting, detrital mineralogy, matrix content defined at point deposition. Bioturbation, infiltration, continued alteration reactive minerals soft sediment deformation can occur soon after deposition and, together with charac...

Grain-coating chlorite preserves porosity and permeability through the inhibition of quartz cement whereas pore-filling blocks pore-throats diminishes reservoir quality. The aim this study is to determine origin principal mechanisms which govern distribution grain-coating in Jurassic deltaic sandstones (Tilje Formation, Smørbukk field, Mid Norwegian Shelf). focussed on very high-density samplin...