Item Number
1040
Type
image
Description
White Oak
Size
7x5
Age
Miocene
SciId
Fagaceae
Status
Out of Inventory
Original Site
Oregon
Date Acquired
1986
Source
Burnett
Notes
Notes from Scott Singleton, 2005 - White Oak. Oregon-Stinking Water Basin, Harney Co., east-cent Family: Fagaceae Stinking Water Basin, Harney Co., east-central Oregon Formation: Age: middle Miocene, ~14 million years Distinguishing Characteristics: Oak is one of the easiest woods to identify because of its thick rays, large vessels at the growth ring boundary, and streaming smaller vessels in the late wood. The large rays are conspicuous to the eye and are separated by a large number of very thin rays (known as uniseriate rays). The large vessels at the growth ring boundary are either empty, as in the red oak group, or filled with tyloses, or thin membranes that seal the vessel, as in the white oak group. (Tyloses protect older, dead wood from infestation by bacteria and fungus). The smaller vessels in the latewood are surrounded by a whitish cell, called parenchyma cells, which give it a streaming appearance. Environment of Deposition: The composition of the Stinking Water Basin flora indicates that it was a lowland temperate forest. Original deposition was either as rafted material in rivers or waterlogged material in lakes. These environments were repeatedly covered by basalt flows or ash falls from Cascade volcanoes. When entombed by molten basalt, these trees burned unless they were covered by water in a stream, lake, or swamp. Ash falls offered an opportunity for these forests to be preserved in their upright, in-situ positions by large quantities of relatively cool ash.
Preview
Description
Notes from Scott Singleton, 2005 - White Oak. Oregon-Stinking Water Basin, Harney Co., east-cent Family: Fagaceae Stinking Water Basin, Harney Co., east-central Oregon Formation: Age: middle Miocene, ~14 million years Distinguishing Characteristics: Oak is one of the easiest woods to identify because of its thick rays, large vessels at the growth ring boundary, and streaming smaller vessels in the late wood. The large rays are conspicuous to the eye and are separated by a large number of very thin rays (known as uniseriate rays). The large vessels at the growth ring boundary are either empty, as in the red oak group, or filled with tyloses, or thin membranes that seal the vessel, as in the white oak group. (Tyloses protect older, dead wood from infestation by bacteria and fungus). The smaller vessels in the latewood are surrounded by a whitish cell, called parenchyma cells, which give it a streaming appearance. Environment of Deposition: The composition of the Stinking Water Basin flora indicates that it was a lowland temperate forest. Original deposition was either as rafted material in rivers or waterlogged material in lakes. These environments were repeatedly covered by basalt flows or ash falls from Cascade volcanoes. When entombed by molten basalt, these trees burned unless they were covered by water in a stream, lake, or swamp. Ash falls offered an opportunity for these forests to be preserved in their upright, in-situ positions by large quantities of relatively cool ash. 10x8
Keywords
White Oak Notes from Scott Singleton, 2005 - White Oak. Oregon-Stinking Water Basin, Harney Co., east-cent Family: Fagaceae Stinking Water Basin, Harney Co., east-central Oregon Formation: Age: middle Miocene, ~14 million years Distinguishing Characteristics: Oak is one of the easiest woods to identify because of its thick rays, large vessels at the growth ring boundary, and streaming smaller vessels in the late wood. The large rays are conspicuous to the eye and are separated by a large number of very thin rays (known as uniseriate rays). The large vessels at the growth ring boundary are either empty, as in the red oak group, or filled with tyloses, or thin membranes that seal the vessel, as in the white oak group. (Tyloses protect older, dead wood from infestation by bacteria and fungus). The smaller vessels in the latewood are surrounded by a whitish cell, called parenchyma cells, which give it a streaming appearance. Environment of Deposition: The composition of the Stinking Water Basin flora indicates that it was a lowland temperate forest. Original deposition was either as rafted material in rivers or waterlogged material in lakes. These environments were repeatedly covered by basalt flows or ash falls from Cascade volcanoes. When entombed by molten basalt, these trees burned unless they were covered by water in a stream, lake, or swamp. Ash falls offered an opportunity for these forests to be preserved in their upright, in-situ positions by large quantities of relatively cool ash. 1986 Miocene Small Slab
Keywords
White Oak Notes from Scott Singleton, 2005 - White Oak. Oregon-Stinking Water Basin, Harney Co., east-cent Family: Fagaceae Stinking Water Basin, Harney Co., east-central Oregon Formation: Age: middle Miocene, ~14 million years Distinguishing Characteristics: Oak is one of the easiest woods to identify because of its thick rays, large vessels at the growth ring boundary, and streaming smaller vessels in the late wood. The large rays are conspicuous to the eye and are separated by a large number of very thin rays (known as uniseriate rays). The large vessels at the growth ring boundary are either empty, as in the red oak group, or filled with tyloses, or thin membranes that seal the vessel, as in the white oak group. (Tyloses protect older, dead wood from infestation by bacteria and fungus). The smaller vessels in the latewood are surrounded by a whitish cell, called parenchyma cells, which give it a streaming appearance. Environment of Deposition: The composition of the Stinking Water Basin flora indicates that it was a lowland temperate forest. Original deposition was either as rafted material in rivers or waterlogged material in lakes. These environments were repeatedly covered by basalt flows or ash falls from Cascade volcanoes. When entombed by molten basalt, these trees burned unless they were covered by water in a stream, lake, or swamp. Ash falls offered an opportunity for these forests to be preserved in their upright, in-situ positions by large quantities of relatively cool ash. 1986 Miocene Small Slab