Upper Silurian

Upper Silurian

[′əp·ər sə′lu̇r·ē·ən]
(geology)
The latest epoch of the Silurian period of geologic time.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Pridoli carbon isotope trend and upper Silurian to lowermost Devonian chemostratigraphy based on sections in Podolia (Ukraine) and the East Baltic area.
Other records from Pennsylvania were published by DeWindt (1974), who described purported acanthodian scales (actually thelodont scales) from upper Silurian beds of the Bloomsburg Formation, central Pennsylvania, and Giffin (1979), who published a full description of the thelodont scales from the same beds; her material is currently being re-assessed.
The thickness of the Upper Silurian succession reaches 720 m in west Lithuania.
During drilling, the company found various gas shows in the middle and upper Silurian shale.
provide a detailed study of enigmatic fossils in Upper Silurian sequences of Bolivia and conclude that they indicate high productivity at high paleolatitudes in Late Silurian epicontinental seas.
Although much like the anomalous breccia, the Upper Silurian Greenfield Dolomite and Tymochtee Formation are noticeably devoid of macrofossils (Swinford 1985); bedding is well developed in the Greenfield and Tymochtee, but not the breccia.
Ancestral horseshoe crab (suborder Synziphosurina) from the Bloomsburg Red Beds (Upper Silurian) of northwestern New Jersey.
Some of the Upper Silurian and all of the Devonian are missing in Syria.
Upper Silurian and Lower Devonian stratigraphy of the central Illinois Basin.
The Upper Silurian includes the Engadine Group, consisting of a massive, hard, bluish-white dolomite, and the Point aux Chenes Shale, consisting of green and red shales, along with thin beds of dolomite and thin beds and small irregular masses of gypsum.
1), in ascending order: (1) Fusselman Formation, (2) Wristen Formation--the "upper Silurian shale" of older works, and (3) Thirtyone Formation--the "Devonian cherty limestone" of older works.

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