Lower Silurian

Lower Silurian

[′lō·ər sə′lu̇r·ē·ən]
(geology)
The earliest epoch of the Silurian period of geologic time, beginning about 420,000,000 years ago.
References in periodicals archive ?
It has been established that the Lower Silurian platform strata of Poland and Lithuania comprise the Llandovery and Wenlock (Verniers et al.
Lower Silurian shales, widely believed to have sourced the huge gas reserves of the Late Permian Khuff in the Persian Gulf, have been examined in Syria.
All of these factors have had an influence on exploiting the Lower Silurian Longmaxi gas shale in the Sichuan Basin.
They cover the lower Silurian of western Ohio; Bourbon and springs in the Inner Bluegrass region of Kentucky; temporal and spatial scales of stream study in west-central Ohio; the golden Ordovician, Silurian seas, and Pleistocene ice; downtown and the Great Dayton Flood of 1913; and fossil collecting from the Middle Devonian silica formation in Paulding County.
The well is operated by Talisman Energy Poland and is designed to test the deep, unconventional gas potential of the Lower Silurian, Ordovician and Upper Cambrian.
The company said Szymkowo-1 Well is designed to test the deep unconventional gas potential of the Lower Silurian, Ordovician and Upper Cambrian and will be the southernmost and deepest penetration of the Paleozoic section in the Baltic Basin.
Figures 1a and 1b show examples of shatter cones in the Lower Silurian Brassfield Limestone and Middle Silurian Lilley Formation respectively.
Containing descriptions of the organic remains of the Lower Division of the New York System (equivalent in part to the Lower Silurian rocks of Europe).
The six-page reference list cites virtually everything written on Early Silurian trilobites going back to the early 1800s, and everything about Anticosti Island geology since the 1700s (except, curiously, the excellent sedimentological study on the Lower Silurian by T.
Both subzones are dominantly composed of the Late Cambrian to Lower Silurian Notre Dame Arc (Whalen et al.
The Lower Silurian includes the Manitoulin Formation, which consists of fossiliferous dolomite and limestone, and the Cabot Head Shale, which is a shale with thin interbeds of limestone containing the evaporites anhydrite and gypsum.