884 resultados para Forest fires.
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Seventy-one samples from Ocean Drilling Program Leg 180 sites were analyzed for vitrinite reflectance and organic type. The objective was to define maximum paleotemperatures across the western Woodlark Basin as a function of depth. The organic matter is of early Pliocene to Holocene age and was recovered from drilled depths of 4.5 to 851.3 meters below seafloor. Organic matter is generally restricted to woody fragments within the sediment, although in a number of fine-grained samples, organic matter is dispersed throughout the sample. Virtually all samples contain vitrinite, part of which may be derived from drifted logs. One sample was found to be barren of organic matter, and two contain only fusinite and semifusinite. Variation of vitrinite reflectance is not systematic with either depth or location, and it appears that formation temperatures have been insufficient to cause an increase in vitrinite reflectance levels. Textural variations within the vitrinite show better correlation with depth. Samples of hypautochthonous peats represent either a terrestrial phase of sedimentation or large peat intraclasts within the section, possibly produced by forest fires in the source areas of the organic matter. The vitrinite and peat-derived samples appear to come from eucalyptus forest settings away from the coastline. Liptinite is not abundant in most of the samples (excluding suberinite associated with woody tissues). Marine liptinite is rare to absent, although many of the samples contain abundant foraminiferal tests. Pyrite is abundant in many of the wood fragments, and some pyritization of woody tissues has taken place.
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"Serial no. 100-87."
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No. 53. Survey of forest plantations of Ottawa, Sandusky, and Seneca Counties, Ohio.--no. 54. Survey of forest plantations of Erie and Huron Counties.--no. 55. Survey of forest plantations of Mercer, Allen, Auglaize, and Shelby Counties, Ohio.--no. 56. Survey of forest plantations of Lorain and Medina Counties.--no. 57. Survey of forest plantations of Wayne County, Ohio.-- no. 58. Survey of forest plantations of Wyandot, Hardin, Marion, Logan, Union and Champaign Co.--no. 59. Forest resources of Preble County, Ohio. no. 62. Survey of forest plantations of Crawford and Morrow Counties.--no. 63. Survey of forest plantations of Franklin and Delaware Counties.--no. 64. Survey of forest plantations of Butler, Hamilton, Warren and Clermont Counties.--no. 65. Forest resources of Wayne County, Ohio. no. 68. Forest resources of Lorain County, Ohio.--no. 69. Forest resources of Medina County, Ohio.--no. 71. Ohio forest survey. A manual of procedure.--no. 73. Fires today and poverty tomorrow.--no. 74. Laws of Ohio relating to forest fires.--no. 75. Twenty-year plan for establishing a more adequate system of state forests and forest parks in Ohio.--no. 76. Ohio's forest resources. 1944.--no. 80. Growing conifers from seed.
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Mode of access: Internet.
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Issued originally as Forestry Circular no. 2.
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"March 1989"--T.p. verso.
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Each Proceedings has a distinctive cover title.
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Mode of access: Internet.
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"April 1996."
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Mode of access: Internet.
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Shipping list no.: 91-506-P.
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Shipping list no.: 92-251-P.
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"TE02P16"--P. [i].
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"International quarterly periodical devoted to forest fire management."
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Final issue consulted: 1972