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Mar 9, 2020 · The Sinagua was a pre-Columbian civilisation from AD 500 to 1425 that lived primarily in what is now Arizona, USA. - HeritageDaily - Archaeology News
This category has the following 10 subcategories, out of 10 total. 1425 by country (3 C, 1 P)
- Columbia River Gorge Landslides
- A Submerged Forest
- Observations on The Way Back
- Bonneville Landslide
- Radiocarbon Dating
- Native American Oral History
Some of the captains’ observations through the Columbia River Gorgecorrectly ascertained the causes or sources of several key catastrophic events, not from the distant geologic past, but recent enough to be recalled in Native American oral histories. Across the river from the “4 Cascades,” Clark noted evidence of a landslide off the southern slopes...
On 30 October 1805, Clark documented the presence of a submerged forest, which along with the burning bluffs of northeastern Nebraska, the “Burnt Hills” of North Dakota, and White Cliffs of the Missouri in central Montana, remain one of the expedition’s most famous geological observations.Discussions of these noteworthy geological observations can ...
On the return journey, Lewis concisely summarized the relationship that he and Clark had deduced of the damming of the river at the Cascades (what Lewis referred as the “rapids”) and the distribution of “doated” (i.e., decayed) trees in the Columbia River Gorge: These key geologic observations were of sufficient interest for Nicholas Biddleand Will...
Through their observations, Lewis and Clark correctly identified what is now technically referred to as the Bonneville rock slide-debris avalanche, a cataclysmic landslide off the slopes of Table Mountain north of the Columbia River (the north or “Stard.” side). As clarified in the Nicholas Biddle notes, Clark’s geography as recorded in his 1 Novem...
At a time where radiocarbon datingThe principle of radiocarbon dating, which utilizes the remains of organic material (e.g., wood), is predicated on the systematic and predictable decay of the unstable carbon-14 isotope (14C) that … Continue reading was emerging as one of the most valuable tools in archaeological and geological research, Lawrence’s...
All of the evidence gathered by Lewis and Clark, and the subsequent geologic and dendrochronologic research by scientists studying the Bonneville landslide, provides persuasive credibility to early documentation of a Native American oral history that spoke of a natural dam blocking the river. The earliest reliable account of that history was record...
Category:1425 - Simple English Wikipedia, the free encyclopedia. Topics specifically related to the year AD 1425. 1420. 1421. 1422. 1423. 1424. 1425. 1426. 1427. 1428. 1429. 1430. 1370s. 1380s. 1390s. 1400s. 1410s. 1420s. 1430s. 1440s. 1450s. 1460s. 1470s. Subcategories. This category has only the following subcategory. B. 1425 births (3 P)
Other events of 1425 History of France • Timeline • Years: Events from the year 1425 in France. Incumbents. Monarch – Charles VII; Deaths. 17 ...
1427 ( MCDXXVII ) was a common year starting on Wednesday of the Julian calendar, the 1427th year of the Common Era (CE) and Anno Domini (AD) designations, the 427th year of the 2nd millennium, the 27th year of the 15th century, and the 8th year of the 1420s decade.
