Permian

විකිපීඩියා වෙතින්
Permian
298.9 ± 0.15 – 251.902 ± 0.024 Ma
Chronology
Etymology
Name formalityFormal
Usage information
Regional usageGlobal (ICS)
Time scale(s) usedICS Time Scale
Definition
Chronological unitPeriod
Stratigraphic unitSystem
Time span formalityFormal
Lower boundary definitionFAD of the Conodont Streptognathodus isolatus within the morphotype Streptognathodus wabaunsensis chronocline.
Lower boundary GSSPAidaralash, Ural Mountains, Kazakhstan
50°14′45″N 57°53′29″E / 50.2458°N 57.8914°E / 50.2458; 57.8914
GSSP ratified1996[2]
Upper boundary definitionFAD of the Conodont Hindeodus parvus.
Upper boundary GSSPMeishan, Zhejiang, China
31°04′47″N 119°42′21″E / 31.0798°N 119.7058°E / 31.0798; 119.7058
GSSP ratified2001[3]

Permian යනු වසර මිලියන 299-252 කට පෙර, එනම් Paleozoic යුගයේ හයවන සහ අවසාන කාලපරිච්ඡේදය වේ.

ආශ්‍රිත[සංස්කරණය]

මූලාශ්‍ර[සංස්කරණය]

  1. "Chart/Time Scale". www.stratigraphy.org. International Commission on Stratigraphy.
  2. Davydov, Vladimir; Glenister, Brian; Spinosa, Claude; Ritter, Scott; Chernykh, V.; Wardlaw, B.; Snyder, W. (March 1998). "Proposal of Aidaralash as Global Stratotype Section and Point (GSSP) for base of the Permian System" (PDF). Episodes. 21: 11–18. doi:10.18814/epiiugs/1998/v21i1/003. සම්ප්‍රවේශය 7 December 2020.
  3. Hongfu, Yin; Kexin, Zhang; Jinnan, Tong; Zunyi, Yang; Shunbao, Wu (June 2001). "The Global Stratotype Section and Point (GSSP) of the Permian-Triassic Boundary" (PDF). Episodes. 24 (2): 102–114. doi:10.18814/epiiugs/2001/v24i2/004. සම්ප්‍රවේශය 8 December 2020.

භාහිර සබැඳි[සංස්කරණය]

"https://si.wikipedia.org/w/index.php?title=Permian&oldid=511578" වෙතින් සම්ප්‍රවේශනය කෙරිණි