Limestone-marl alternations: A warm-water phenomenon?

Westphal H, Munnecke A (2003)

Publication Language: English

Publication Status: Published

Publication Type: Journal article, Original article

Publication year: 2003


Book Volume: 31

Pages Range: 263-266

Journal Issue: 3


DOI: 10.1130/0091-7613(2003)031<0263:LMAAWW>2.0.CO;2


Ancient limestone-marl alternations are concentrated in settings analogous to loci of aragonite accumulation in the modern world. They typically occur on shelves in the tropical-subtropical climate belt, are far more abundant on passive continental margins than on active ones, and are rare in upwelling zones. In recent studies, aragonite was proposed to play an important role in differential diagenesis typical of most limestone-marl alternations. The coincidence of depositional settings of ancient limestone-marl alternations and modern aragonite accumulation is a strong case for this hypothesis. If confirmed, it could provide a valuable tool for broad-scale paleoenvironmental interpretations. An additional, different type of limestone-marl alternations resulted from the Cretaceous explosion in productivity of calcitic plankton: these pelagic ones are fundamentally different in their style of diagenesis.

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Westphal, H., & Munnecke, A. (2003). Limestone-marl alternations: A warm-water phenomenon? Geology, 31(3), 263-266.<0263:LMAAWW>2.0.CO;2


Westphal, Hildegard, and Axel Munnecke. "Limestone-marl alternations: A warm-water phenomenon?" Geology 31.3 (2003): 263-266.

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