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At the 2009 Tucson gem and mineral show the Collector's Edge Minerals will be debuting a new find of petrified wood from China. It is from the Junggar Basin in Xinjiang, northwest China.

The petrified trees were preserved in the lower part of the Upper Jurassic Shishugou Group of the fluvial deposit containing abundant silicified tree stumps and logs, showing variations in log size and thickness of the well preserved growth rings.

The taphonomy of the deposition of these logs and stumps, and the ecology of the ancient forests in which they grew, are being investigated using multiple approaches, such as sedimentology, field mapping of the stumps and logs, wood growth in relationship to habit analysis and the identification of the wood types in relation to their positions within the sediments. In addition, the relationship between logs and rotting fungi as well as possible animal interactions are being considered in this investigation. The annual growth ring analysis of the various woods indicates that climatic variations (mega-monsoonal climate) existed during the early Late Jurassic of the Junggar Basin.

The Collector's Edge will have specimens from large display slices and cross sections to a conference table size specimen!!!

Contact Graham Sutton @ 303-915-4645 for details