| |
700-850 A.D. |
|
Ancestral Puebloans migrated into the Piedra River area. |
| |
850-950 |
|
A fourth of the population moved upslope to live on High Mesa. |
| |
950-975 |
|
Ridge House construction Phase I |
| |
July 1054 |
|
The supernova, which produced the Crab Nebula, was visible in the daytime sky for three weeks and in the nighttime sky for about two years. |
| |
December 1057 |
|
At the winter solstice, the full moon rose between the chimneys and
archaeoastronomists speculate that this was discovered by the residents of Chimney Rock. |
| |
1064 |
|
Sunset Crater eruption. The crater is north northwest of Flagstaff, AZ. |
| |
1066 |
|
Hailey's Comet appeared on the eve of the Battle of Hastings. The comet covered one-fourth of the nighttime sky. |
| |
1073-1077 |
|
Period of a Major Lunar Standstill. It is estimated that the moon appeared between the chimneys on more than forty occasions.
|
| |
1076 |
|
Great House construction Phase I during Major Lunar Standstill |
| |
1077 |
|
Pithouse construction began. |
| |
1077 |
|
Sunspots large enough to be seen with the naked eye were reported in China beginning two hundred years of unusual sunspot activity. |
| |
1078 |
|
Ridge House construction Phase II |
| |
1084 |
|
Great Kiva construction began not much later than 1084. |
| |
1093 |
|
Great House construction Phase II |
| |
1094 |
|
Major Lunar Standstill |
| |
July 11, 1097 |
|
Total solar eclipse passed directly over Chimney Rock |
| |
1111 |
|
Major Lunar Standstill |
| |
1125 |
|
People left Chimney Rock |
| |
1150 |
|
Chaco decline begins |
| |
1100-1200 |
|
Drought and cooler temperatures |
| |
1280 |
|
People left Mesa Verde |
| |
1300 |
|
Four Corners area empty of Ancestral Puebloans |
