හේඩියානු

*Hadean*
Hadean
~4600 – 4000 Ma ෆැ. ප්‍රොටෙරො. ආකියානු හේඩි.
	Artist's impression of a Hadean landscape.
Chronology
−4500 — – — – −4000 — – — – −3500 — – — – −3000 — – — – −2500 — – — – −2000 — – — – −1500 — – — – −1000 — – — – −500 — – — – 0 —	P ; r ; e ; c ; a ; m ; b ; r ; i ; a ; n Hadean A ; r ; c ; h ; e ; a ; n P ; r ; o ; t ; e ; r ; o ; z ; o ; i ; c P ; h ; a ; n. Eo Paleo Meso Neo Paleo Meso Neo Paleozoic Mesozoic Cenozoic
	Scale: millions of years
Proposed subdivisions	See text;
Etymology
Synonym(s)	Priscoan Period; Harland et al., 1989;
Usage information
Celestial body	Earth
Regional usage	Global (ICS)
Definition
Chronological unit	Eon
Stratigraphic unit	Eonothem
First proposed by	Preston Cloud, 1972
Time span formality	Informal
Lower boundary definition	Formation of the Earth
Lower boundary GSSP	N/A
GSSP ratified	N/A
Upper boundary definition	Defined Chronometrically
Upper boundary GSSP	N/A
GSSP ratified	N/A

හේඩියානු යුගය (ඉංග්‍රීසි: Hadean) යනු වසර බිලියන 4.6 කට පමණ පෙර පෘථිවිය සෑදීමෙන් ආරම්භ වූ භූ විද්‍යාත්මක කාලයේ පළමු යුගය වේ.

භාහිර සබැඳි

v t e හේඩියානු යුගය
Cryptic Basin Groups Nectarian Lower Imbrian
The Hadean does not have any subdivisions recognized by the International Commission on Stratigraphy. These subdivisions represent one proposal that is loosely based on the lunar geologic timescale.