Middle Silurian

Middle Silurian

[′mid·əl si′lür·ē·ən]
(geology)
The geologic epoch between the Upper and Lower Silurian.
References in periodicals archive ?
Carbonate platform evolution and conodont stratigraphy during the middle Silurian Mulde Event, Gotland, Sweden.
Radiometric dating of a granodiorite at the Cuttaburra A prospect indicates that this mineralised system may be Middle Silurian in age and thus indicating that the host rocks are older than those hosting the Cobar-type deposits.
This contact is that between Middle Silurian carbonates (Peebles Dolomite, Tymochtee Formation, and Greenfield Dolomite and the fissile brown and black shales of the Upper Devonian Olentangy and Ohio Shales.
A stratigraphic and sedimentologic analysis of some Lower and Middle Silurian clastic rocks of the north-central Appalachians.
2000) have identified large peaks in the distribution of dolostones during the last 570 Ma, namely in the Early Ordovician Middle Silurian.
The maximum age is constrained by the occurrence of middle Silurian fauna; a minimum age limit is not tightly constrained.
The Middle Silurian is represented by the Burnt Bluff Group, which is composed of light gray, calcitic dolomite and limestone, and the Manistique Group, which consists of brown or gray, cherty dolomite that contains beds of lime mudstone.
Indiana"), has been drilled to a depth of approximately 4,840 meters, which is the lower portion of the Middle Silurian formation (Wenlock).
Figures 1a and 1b show examples of shatter cones in the Lower Silurian Brassfield Limestone and Middle Silurian Lilley Formation respectively.
Thomka & Brett (2014) argued that matrix-supported reefs are not observed at every major middle Silurian transgressive surface and inferred that additional control was necessary to explain time-specific reef facies appearing specifically during Silurian carbon isotope excursions.
This Middle Silurian age for the granitic intrusion found at the Cuttaburra A prospect rules out a Cobar-type model (which is younger - Early Devonian) for the gold mineralisation, if it is associated with the granite as it appears to be.

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