Latitudinal variations in plankton δ13C: implications for CO2 and productivity in past oceans

GH Rau, T Takahashi, DJD Marais - Nature, 1989 - nature.com
THE stable-carbon isotopic composition of marine organic material has varied significantly
over geological time, and reflects significant excursions in the isotopic fractionation …

C-isotope stratigraphy, a monitor of paleoenvironmental change: a case study from the Early Cretaceous

H Weissert - Surveys in Geophysics, 1989 - Springer
Today's disturbance of the global carbon cycle induced by anthropogenic processes has
raised new interest in the history of the global carbon cycle and its relationship to climate …

An isotopic study of biogeochemical relationships between carbonates and organic carbon in the Greenhorn Formation

JM Hayes, BN Popp, R Takigiku… - … et Cosmochimica Acta, 1989 - Elsevier
Carbon-isotopic compositions of total carbonate, inoceramid carbonate, micritic carbonate,
secondary cements, total organic carbon, and geoporphyrins have been measured in 76 …

A paleoceanographic model for the early evolutionary history of planktonic foraminifera

RM Leckie - Palaeogeography, Palaeoclimatology, Palaeoecology, 1989 - Elsevier
The first major radiations of planktonic foraminifera occurred during the mid-Cretaceous.
However, this period of great diversification was interrupted by two intervals of pronounced …

Changes in paleoenvironments in the Atlantic Ocean during Cretaceous times: results from black shales studies

R Stein, J Rullkötter, DH Welte - Geologische Rundschau, 1989 - Springer
Large parts of the Cretaceous Atlantic Ocean are characterized by the wide-spread
deposition of organic-carbon-rich sediments (» black shales «), with a maximum occurrence …

Sources and deposition of organic matter in Cretaceous passive margin deep-sea sediments: a synthesis of organic geochemical studies from Deep Sea Drilling …

PA Meyers - Marine and Petroleum Geology, 1989 - Elsevier
The results of organic geochemical studies of rock samples from Cretaceous strata at Site
603 on the outer Hatteras Rise are reviewed and integrated with their lithostratigraphic …

Paleoclimate perspectives on a greenhouse warming

TJ Crowley - Climate and Geo-Sciences: A Challenge for Science …, 1989 - Springer
Results from paleoclimatology are used as a frame-of-reference for interpreting possible
consequences of a future greenhouse wanning. The warming will probably represent a first …

[HTML][HTML] Contrôles de la sédimentation marneuse en milieu pélagique semi-anoxique. Exemples dans le Mésozoïque du Sud-Est de la France et de l'Atlantique

NP Tribovillard - Travaux et Documents des Laboratoires de Géologie …, 1989 - persee.fr
The Callovian-Oxfordian Terres Noires Formation and the Aptian-Albian Marnes Bleues
Formation (Dauphinois Basin, SE France) are made of dark marls, displaying a colour …

[引用][C] Productivity of the Ocean: Present and Past eds. WH Berger, VS Smetacek and G. Wefer, pp. 355–375 John Wiley & Sons Limited S. Bernhard, Dahlem …

HR Thierstein - Productivity of the Ocean: Present and Past, 1989 - Wiley