Negative carbon isotope excursions: an interpretive framework

An Interpretive Framework for Application Performance Prediction

Software development in parallel/distributed environment is a non-trivial task and depends greatly on the availability of appropriate support in terms of development tools and environments. Perforamnce pre-diction/evaluation tools form a critical part of any software development environment as they enable the developer to visualize the eeects of various design choices on the performance of the ...

An Interpretive Framework for Application Performance PredictionTechnical

PAUL F. HOFFMAN SERIES A Temperature-Dependent Positive Feedback on the Magnitude of Carbon Isotope Excursions

The decrease in the average magnitude of carbon isotope excursions in marine carbonates over Phanerozoic time is a longstanding unresolved problem. In addition, carbon isotope excursions commonly co-occur with oxygen isotope excursions of the same sign, implying the existence of a longstanding link between organic carbon burial fluxes and temperature. It was proposed that this connection was pr...

Reconciliation of marine and terrestrial carbon isotope excursions based on changing atmospheric CO₂ levels.

Negative carbon isotope excursions measured in marine and terrestrial substrates indicate large-scale changes in the global carbon cycle, yet terrestrial substrates characteristically record a larger-amplitude carbon isotope excursion than marine substrates for a single event. Here we reconcile this difference by accounting for the fundamental increase in carbon isotope fractionation by land pl...

Evidence for recurrent Early Triassic massive volcanism from quantitative interpretation of carbon isotope fluctuations

Carbon cycle disturbance associated with mass extinction at the end of the Permian Period continued through the Early Triassic, an interval of approximately 5 million years. Coincidence of carbon cycle stabilization with accelerated Middle Triassic biotic recovery suggests a link between carbon cycling and biodiversity, but the cause of Early Triassic carbon isotope excursions remains poorly un...