Premium
The genesis of nodular limestones in the Ordovician and Silurian of the Oslo Region (Norway)
Author(s) -
MÖLLER NICOLA KERSTIN,
KVINGAN KNUT
Publication year - 1988
Publication title -
sedimentology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.494
H-Index - 108
eISSN - 1365-3091
pISSN - 0037-0746
DOI - 10.1111/j.1365-3091.1988.tb00994.x
Subject(s) - ordovician , geology , calcite , bioturbation , carbonate , dissolution , carbonate rock , paleontology , geochemistry , sedimentary rock , mineralogy , chemistry , materials science , sediment , metallurgy
Nodular limestones have been studied from the Lower Chasmops Shale (Middle Ordovician) and the Rytteráker Formation (Lower Silurian). Observations on nodule‐host‐rock relations and variations of ferroan/non‐ferroan calcite cements help explain the role of precipitation, dissolution and redistribution of carbonate. Distribution and frequency of nodules depends on environmental parameters such as carbonate/clay ratio, grain size distribution and bioturbation, though final shapes are the result of pressure‐dissolution and cleavage.