Tree Rings (Other Keyword)

DOCUMENT Citation Only Irina Panyushkina. Steven Leavitt. John Zawiskie.

The last deglaciation was characterized by numerous abrupt climate shifts including the extended Bølling and Allerød warm periods and the Preboreal, Younger Dryas, Older Dryas and Intra-Allerød cold periods, which caused loss of stability across the periglacial landscapes of the Great Lakes region. To date, assessing the possible impact of abrupt late glacial environmental change in this area has been limited by paucity of high-resolution environmental proxies that can be compared to the...

DOCUMENT Citation Only Galen McCloskey.

The historic homestead of Triangle HC has served multiple purposes throughout the years. These purposes have been apparent in a series of new constructions and also reflect the historic uses of the building. Located on private land within the Prescott National Forest, this building is now being utilized as archaeological field school headquarters to understand more of the prehistory of the area. This prehistoric archaeological research has also created an opportunity to conduct historic research...

DOCUMENT Full-Text Kenneth L. Peterson.

Pollen records from two locations in the spruce (Picea engelmannii) forest of the La Plata Mountains, southwestern Colorado, provide paleoclimatic information for the headwater region of the Dolores River. Because of the difference in spruce growth response to climatic variation at its upper and lower elevational limits, the pollen records from Twin Lakes and Beef Pasture yield paleoclimatic information unobtainable from either record alone. Radiocarbon dates, tree-ring indices, and historic...

DOCUMENT Citation Only Harold C. Fritts.

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