Microspar development during early marine burial diagenesis: A comparison of Pliocene carbonates from the Bahamas with Silurian limestones from Gotland (Sweden)
Munnecke A, Westphal H, Reijmer JJG, Samtleben C (1997)
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 1997
Journal
Publisher: Wiley-Blackwell
Book Volume: 44
Pages Range: 977-990
Journal Issue: 6
DOI: 10.1111/j.1365-3091.1997.tb02173.x
Abstract
Comparison of ultrastructures in Pliocene periplatform carbonates from the Bahamas with Silurian limestones from Gotland (Sweden) reveals that despite the differences in primary sediment composition and age, they reflect a similar mechanism of lithification. In both sequences calcite microspar was formed as a primary cement at an early stage of marine burial diagenesis. Neither significant compression nor meteoric influence are necessary for the formation of calcite microspar. A model is proposed for the process of microsparitic cementation of fine-grained aragonite needle muds comprising four stages: (1) unconsolidated, aragonite-dominated carbonate mud; (2) precipitation of microspar that engulfs aragonite needles; (3) dissolution of aragonite, resulting in pitted surfaces of the microspar crystals; and (4) slight recrystallization. Our results contradict the widespread opinion that microspar necessarily is a product of secondary recrystallization of a previously lithified micrite.
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APA:
Munnecke, A., Westphal, H., Reijmer, J.J.G., & Samtleben, C. (1997). Microspar development during early marine burial diagenesis: A comparison of Pliocene carbonates from the Bahamas with Silurian limestones from Gotland (Sweden). Sedimentology, 44(6), 977-990. https://dx.doi.org/10.1111/j.1365-3091.1997.tb02173.x
MLA:
Munnecke, Axel, et al. "Microspar development during early marine burial diagenesis: A comparison of Pliocene carbonates from the Bahamas with Silurian limestones from Gotland (Sweden)." Sedimentology 44.6 (1997): 977-990.
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