Ordovician යනු වසර මිලියන 485-444 කට පෙර Paleozoic යුගයේ දෙවන කාල පරිච්ඡේදය වේ,
Ordovician | |
---|---|
Chronology | |
Etymology | |
Name formality | Formal |
Name ratified | 1960 |
Usage information | |
Celestial body | |
Regional usage | Global () |
Time scale(s) used | ICS Time Scale |
Definition | |
Chronological unit | |
Stratigraphic unit | |
First proposed by | , 1879 |
Time span formality | Formal |
Lower boundary definition | of the |
Lower boundary GSSP | Greenpoint section, , , Canada 49°40′58″N 57°57′55″W / 49.6829°N 57.9653°W |
GSSP ratified | 2000 |
Upper boundary definition | FAD of the |
Upper boundary GSSP | , , U.K. 55°26′24″N 3°16′12″W / 55.4400°N 3.2700°W |
GSSP ratified | 1984 |
Atmospheric and climatic data | |
Sea level above present day | 180 m; rising to 220 m in Caradoc and falling sharply to 140 m in end-Ordovician glaciations |
මූලාශ්ර
- Cooper, Roger; Nowlan, Godfrey; Williams, S. H. (March 2001). "Global Stratotype Section and Point for base of the Ordovician System" (PDF). Episodes. 24 (1): 19–28. doi:10.18814/epiiugs/2001/v24i1/005. සම්ප්රවේශය 6 December 2020.
- 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.
- 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
- Ogg, Jim (June 2004). . 2006-04-23 දින මුල් පිටපත වෙතින් සංරක්ෂණය කරන ලදී. සම්ප්රවේශය 2006-04-30.
- Mehrtens, Charlotte. "Chazy Reef at Isle La Motte". An Ordovician reef in Vermont.
- Ordovician fossils of the famous Cincinnatian Group
- Ordovician (chronostratigraphy scale)
විකිපීඩියාව, විකි, සිංහල, පොත, පොත්, පුස්තකාලය, ලිපිය, කියවන්න, බාගන්න, නොමිලේ, නොමිලේ බාගන්න, mp3, වීඩියෝ, mp4, 3gp, jpg, jpeg, gif, png, පින්තූරය, සංගීතය, ගීතය, චිත්රපටය, පොත, ක්රීඩාව, ක්රීඩා., ජංගම දුරකථන, android, ios, apple, ජංගම දුරකථන, samsung, iphone, xiomi, xiaomi, redmi, honor, oppo, nokia, sonya, mi, පීසී, වෙබ්, පරිගණකය
Ordovician යන වසර ම ල යන 485 444 කට ප ර Paleozoic ය ගය ද වන ක ල පර ච ඡ දය ව Ordovician485 4 1 9 443 8 1 5 Ma PreYe Ye O S D C P T J K PgChronologyEtymologyName formalityFormalName ratified1960Usage informationCelestial bodyRegional usageGlobal Time scale s usedICS Time ScaleDefinitionChronological unitStratigraphic unitFirst proposed by 1879Time span formalityFormalLower boundary definitionof theLower boundary GSSPGreenpoint section Canada 49 40 58 N 57 57 55 W 49 6829 N 57 9653 W 49 6829 57 9653GSSP ratified2000Upper boundary definitionFAD of theUpper boundary GSSP U K 55 26 24 N 3 16 12 W 55 4400 N 3 2700 W 55 4400 3 2700GSSP ratified1984Atmospheric and climatic dataSea level above present day180 m rising to 220 m in Caradoc and falling sharply to 140 m in end Ordovician glaciationsම ල ශ රCooper Roger Nowlan Godfrey Williams S H March 2001 Global Stratotype Section and Point for base of the Ordovician System PDF Episodes 24 1 19 28 doi 10 18814 epiiugs 2001 v24i1 005 සම ප රව ශය 6 December 2020 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 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 Ordovician Ordovician හ සබ ඳ ම ධ ය ව ක ම ධ ය ක මන ස හ ඇත Ogg Jim June 2004 2006 04 23 ද න ම ල ප ටපත ව ත න ස රක ෂණය කරන ලද සම ප රව ශය 2006 04 30 Mehrtens Charlotte Chazy Reef at Isle La Motte An Ordovician reef in Vermont Ordovician fossils of the famous Cincinnatian Group Ordovician chronostratigraphy scale