Climatic forcing of carbon-oxygen isotopic covariance in temperate-region marl lakes

• Published in: Geology (Boulder) Vol. 23; no. 11; p. 1031
• Main Authors: Drummond, C N, Patterson, W P, Walker, J C
• Format: Journal Article
• Language: English
• Published: United States 01.11.1995
• Subjects: Carbon - analysis; Carbon Isotopes; Carbonates - analysis; Climate; Fresh Water - analysis; Fresh Water - chemistry; Geologic Sediments - analysis; Geologic Sediments - chemistry; Michigan; Oxygen - analysis; Oxygen Isotopes; Paleontology; Rain; Seasons; Michigan; NASA Discipline Number 52-30; NASA Discipline Exobiology; NASA Program Exobiology; Non-NASA Center

Carbon and oxygen stable isotopic compositions of lacustrine carbonate from a southeastern Michigan marl lake display linear covariance over a range of 4.0% Peedee belemnite (PDB) in oxygen and 3.9% (PDB) in carbon. Mechanisms of delta 13 C-delta 18 O coupling conventionally attributed to lake closu...