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Full-Text Articles in Physical Sciences and Mathematics
Wood Occurring In The Ginkgo And Associated Petrified Forest (No. 1-The Gingko), George F. Beck
Wood Occurring In The Ginkgo And Associated Petrified Forest (No. 1-The Gingko), George F. Beck
All Faculty Scholarship for the College of the Sciences
The most interesting single fossil tree, but at the same time the most difficult to determine in the Ginkgo Petrified Forest (Washington), is the tree after which this unusual petrified forest takes its name. The ginkgo is not only the world's oldest and most remarkable living tree, but it has long been regarded as holding the most striking fossil record of any living thing, plant or animal.
Grinding Thin Sections For Determining Petrified Woods, George F. Beck
Grinding Thin Sections For Determining Petrified Woods, George F. Beck
All Faculty Scholarship for the College of the Sciences
The collector and student of petrified woods cannot long be satisfied to merely place these colorful and interesting specimens in the cabinet with the mere label, "petrified wood." Frequently determining the types of wood which once thrived in a given area is of importance to give a clue to climatic conditions of past geological ages. The collector should at least be qualified to recognize the more common woods and distinguish one family of trees from another.
Spruce In The Western Miocene, George F. Beck
Spruce In The Western Miocene, George F. Beck
All Faculty Scholarship for the College of the Sciences
One of the real surprises in store for us as we began to section specimens of petrified wood from the Vantage and certain other horizons in Central Washington, was the prevalence of a spruce type hardly hinted at in the leaf lists as published for the various sediments of Yakima time (upper miocene?).