Medallion trees in Sandia Mountains New Mexico, USA

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In summary, medallions have been attached to trees to count growth rings without harming the tree. The core removed from the tree is used to determine the germination date, as seen with the "Canterbury Tales Tree GD 1387" which germinated the year Chaucer began writing his Tales. However, these trees can die, be cut down, or blown down, resulting in MIA medallion trees. Dendrochronology, the study of tree rings, has been used since the late 1960s, with Carl Fritz being one of the first to date logs from ancient hogans on the Navajo Reservation. Hogan is a Navajo word for a circular stone house, which have been dated to the
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jim mcnamara
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https://www.abqjournal.com/1218873/on-the-trail-of-the-medallion-trees.html

Medallions have been attached to trees that have had a core removed. The cores are used to count growth rings, the diameter of the core is a few millimeters and does not hurt the tree. The core can be long, like more than one meter in exceptionally old trees.

The medallion got screwed into the hole after the ring count and the germination date of the tree is determined in the lab. For example the "Canterbury Tales Tree GD 1387" germinated the year Chaucer began writing the Tales. You can google for lists but they often have MIA medallion trees listed. Trees die, get cut down, or blown down.

Ring counting for students: https://serc.carleton.edu/trex/students/labs/lab2_2.html
 
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Carl Fritz then at Northern Arizona Univ, late 1960's - was one of the first to date logs from ancient hogans on the Navajo Reservation. IIRC, the researchers created a 'calendar' of tree rings from a large sample of trees and some logs in the local area on the Defiance Plateau, then compared the data from the stone hogans.

I do not know who did this kind of research first.
 
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Sorry, jim mcnamara, when you write stone hogans, are you talking about Stone Hogan Park, in Fulton County, Georgia?
 
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Hogan is a Navajo word for a kind of circular house with one door facing East. These have stone walls, not wooden, which was unusual - also probably why they lasted longer. They dated to the late 1100's early 1200's.

My bad.
 
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1. What are medallion trees in Sandia Mountains?

Medallion trees, also known as aspen trees, are a type of deciduous tree that grows in the Sandia Mountains of New Mexico. They are characterized by their smooth white bark, heart-shaped leaves, and vibrant yellow fall foliage.

2. How do medallion trees grow in the Sandia Mountains?

Medallion trees grow in the Sandia Mountains due to the unique climate and soil conditions found in this region. They thrive in areas with high elevation, cool temperatures, and abundant rainfall.

3. Are medallion trees endangered in the Sandia Mountains?

No, medallion trees are not considered endangered in the Sandia Mountains. However, they are at risk due to factors such as climate change and human development, which can impact their habitat and ability to reproduce.

4. What is the significance of medallion trees in the Sandia Mountains?

Medallion trees play an important role in the ecosystem of the Sandia Mountains. They provide food and shelter for various wildlife, help prevent erosion, and contribute to the overall biodiversity of the area.

5. Can medallion trees be found in other parts of the world?

Yes, medallion trees can be found in other parts of the world, including other mountainous regions in North America and Europe. They are also commonly found in temperate regions of Asia and are grown as ornamental trees in many parts of the world.

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