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Silurian යනු වසර මිලියන 444-419 කට පෙර Paleozoic යුගයේ තුන්වන කාලය වේ.
| Silurian | |
|---|---|
 Plate tectonics of Earth during the early Silurian | |
| Chronology | |
| Etymology | |
| Name formality | Formal |
| Synonym(s) | Gotlandian |
| Usage information | |
| Celestial body | |
| Regional usage | Global () |
| Time scale(s) used | ICS Time Scale |
| Definition | |
| Chronological unit | |
| Stratigraphic unit | |
| First proposed by | , 1835 |
| Time span formality | Formal |
| Lower boundary definition | of the |
| Lower boundary GSSP | , , UK 55°26′24″N 3°16′12″W / 55.4400°N 3.2700°W |
| GSSP ratified | 1984 |
| Upper boundary definition | FAD of the Graptolite |
| Upper boundary GSSP | , 49°51′18″N 13°47′31″E / 49.8550°N 13.7920°E |
| GSSP ratified | 1972 |
| Atmospheric and climatic data | |
| Sea level above present day | Around 180m, with short-term negative excursions |
සටහන්
- Lucas, Sepncer (6 November 2018). "The GSSP Method of Chronostratigraphy: A Critical Review". Frontiers in Earth Science. 6: 191. :2018FrEaS...6..191L. doi:10.3389/feart.2018.00191.
- Holland, C. (June 1985). "Series and Stages of the Silurian System" (PDF). Episodes. 8 (2): 101–103. doi:10.18814/epiiugs/1985/v8i2/005. සම්ප්‍රවේශය 11 December 2020.
- Chlupáč, Ivo; Hladil, Jindrich (January 2000). "The global stratotype section and point of the Silurian-Devonian boundary". CFS Courier Forschungsinstitut Senckenberg. සම්ප්‍රවේශය 7 December 2020.
- Haq, B. U.; Schutter, SR (2008). "A Chronology of Paleozoic Sea-Level Changes". Science. 322 (5898): 64–68. :2008Sci...322...64H. doi:10.1126/science.1161648. PMID 18832639. 206514545.
භාහිර සබැඳි
- Silurian
- UCMP Berkeley: The Silurian
- Paleoportal: Silurian strata in U.S., state by state
- "International Commission on Stratigraphy (ICS)". Geologic Time Scale 2004. සම්ප්‍රවේශය September 19, 2005.
- Examples of Silurian Fossils
- GeoWhen Database for the Silurian
- Silurian (Chronostratography scale)
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Silurian යන වසර ම ල යන 444 419 කට ප ර Paleozoic ය ගය ත න වන ක ලය ව Silurian443 8 1 5 419 2 3 2 Ma PreYe Ye O S D C P T J K PgPlate tectonics of Earth during the early SilurianChronologyEtymologyName formalityFormalSynonym s GotlandianUsage informationCelestial bodyRegional usageGlobal Time scale s usedICS Time ScaleDefinitionChronological unitStratigraphic unitFirst proposed by 1835Time span formalityFormalLower boundary definitionof theLower boundary GSSP UK 55 26 24 N 3 16 12 W 55 4400 N 3 2700 W 55 4400 3 2700GSSP ratified1984Upper boundary definitionFAD of the GraptoliteUpper boundary GSSP 49 51 18 N 13 47 31 E 49 8550 N 13 7920 E 49 8550 13 7920GSSP ratified1972Atmospheric and climatic dataSea level above present dayAround 180m with short term negative excursionsසටහන Lucas Sepncer 6 November 2018 The GSSP Method of Chronostratigraphy A Critical Review Frontiers in Earth Science 6 191 2018FrEaS 6 191L doi 10 3389 feart 2018 00191 Holland C June 1985 Series and Stages of the Silurian System PDF Episodes 8 2 101 103 doi 10 18814 epiiugs 1985 v8i2 005 සම ප රව ශය 11 December 2020 Chlupac Ivo Hladil Jindrich January 2000 The global stratotype section and point of the Silurian Devonian boundary CFS Courier Forschungsinstitut Senckenberg සම ප රව ශය 7 December 2020 Haq B U Schutter SR 2008 A Chronology of Paleozoic Sea Level Changes Science 322 5898 64 68 2008Sci 322 64H doi 10 1126 science 1161648 PMID 18832639 206514545 භ හ ර සබ ඳ Wikisource has original works on the topic Paleozoic Silurian Silurian හ සබ ඳ ම ධ ය ව ක ම ධ ය ක මන ස හ ඇත Silurian UCMP Berkeley The Silurian Paleoportal Silurian strata in U S state by state International Commission on Stratigraphy ICS Geologic Time Scale 2004 සම ප රව ශය September 19 2005 Examples of Silurian Fossils GeoWhen Database for the Silurian Silurian Chronostratography scale