Microspar development during early marine burial diagenesis: A comparison of Pliocene carbonates from the Bahamas with Silurian limestones from Gotland (Sweden)

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Munnecke A, Westphal H, Reijmer JJG, Samtleben C
Zeitschrift: Sedimentology
Verlag: Wiley-Blackwell
Jahr der Veröffentlichung: 1997
Band: 44
Heftnummer: 6
Seitenbereich: 977-990
ISSN: 0037-0746


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.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Munnecke, Axel Prof. Dr.
Naturwissenschaftliche Fakultät


Einrichtungen weiterer Autorinnen und Autoren

Vrije Universiteit Amsterdam (VU) / University Amsterdam


Zitierweisen

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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