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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 11 to 20 of 923 (0.047 seconds)Spelling suggestions: "subject:"estratigraphy."" "subject:"bistratigraphy.""
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Stratigraphy and sedimentation of the Spencer Formation in Yamhill and Washington Counties, OregonAl-Azzaby, Fathi Ayoub 01 January 1980 (has links)
The Spencer Formation in Yamhill and Washington Counties, Oregon, is exposed in a narrow belt 27 km long, from 1/4 to 3 km wide and with a maximum thickness of about 400 m. The formation is composed entirely of sandstone with interbedded thin layers of mudstone in the uppermost member. The sedimentary structure and paleoecology indicate a shallow marine depositional environment. The upper member of the Spencer Formation contains more quartz, plagioclase, and hornblende than does the lower member, but K-feldspar is less than that of the lower member. Shallower water conditions for the deposition of the upper member are indicated by sedimentary structures and the abundance of pebbly lenses and coaly material. Eighteen species of megafossils collected from the formation indicate that the Spencer Formation is of the Tejon stage (late Eocene of the West Coast).
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| 12 |
Depositional Environments of the Wellington Stratigraphic Trap and Adjacent Seals in the Late Permian of the Baryulah Area, Cooper BasinLittle, K. M. Unknown Date (has links)
No description available.
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| 13 |
The stratigraphic relationships of the Columbia River Basalt Group in the lower Columbia River Gorge of Oregon and WashingtonTolan, Terry Leo 01 January 1982 (has links)
The purpose of this study was to produce a detailed geologic map of the CRBG in the western portion of the Columbia River Gorge (fig. 1). The objectives were (1) to identify and delineate the extent of the Priest Rapids Member and Pomona Member intracanyon flows, and (2) to define the relationship of post-CRBG units to the CRBG intracanyon flows.
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| 14 |
Seismic stratigraphy and distribution of Palaeogene sediments west and east of ShetlandCondon, Patrick J. January 1988 (has links)
No description available.
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| 15 |
The evolution of coastal sand dunes in the southern isles of the Outer Hebrides of ScotlandSchwenninger, Jean-Luc January 1996 (has links)
No description available.
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| 16 |
The diagenesis of the Lincolnshire limestone (Bajocian) in LincolnshireEmery, D. January 1986 (has links)
No description available.
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| 17 |
Coal-dust : a marker pollutant in the Severn Estuary and Bristol ChannelFrench, Peter W. January 1990 (has links)
No description available.
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| 18 |
The late Quaternary history of Wester Branxholme and Kingside Lochs, SE ScotlandTight, J. A. January 1987 (has links)
No description available.
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| 19 |
The stratigraphy, geochemistry and petrogenesis of the Troods extrusive sequence, CyprusTaylor, R. N. January 1983 (has links)
No description available.
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| 20 |
The genesis and diagenesis of cave sediments at Creswell CragsGriffin, Christine M. January 1989 (has links)
No description available.
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