The Geology of the Bear Creek Area, Crook and Deschutes Counties, Oregon PDF Download
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Author: Wallace Dean Lowry
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 156
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Author: Wallace Dean Lowry
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 156
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Author: Amjad I. Khan
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 272
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The Bear Creek area is situated at the boundry between the Basin and Range Province, Deschutes Basin and Blue Mountains Province. It contains rock units representing most of the Cenozoic geologic column. The major rock units exposed are the Clarno Formation, John Day Formation, Columbia River Basalt Group, Deschutes Formation and the Rim Basalts. The Bear Creek area exposes the southwestern most outcrops of the John Day Formation, which are typically fresher than the John Day rocks exposed elsewhere. In the Bear Creek area fluviatile sediments of John Day affinity have been reported for the first time. The most important unconformity in the thesis area is an angular break, between the John Day Formation and the Columbia River Basalt Group rocks. Rocks under the unconformity are folded with dips up to 40°, and the thesis area is on the limb of one of these folds. The Columbia River Basalt is very gently folded in the same pattern. The most prominent structures of the area are a number of north-south trending faults. Field evidence is presented which indicates that all of these faults are younger than the Columbia River Basalt / John Day angular unconformity. Five different sets of faults have been identified in the thesis area on the basis of orientation and sequence. The Bear Creek Faults are the oldest set of faults. These faults are high angle normal and/or reverse (possibly scissor) faults. Minor strike slip faults cut the Taylor Butte. These faults are at least younger than the John Day Formation. The Dam Fault is a high angle normal fault, and has the maximum amount of displacement associated with it. The Reservoir Fault trends in the northwest-southeast direction and is a high angle normal fault. The Alkali Flat Fault is the youngest fault exposed in the area, and is a north-south trending normal fault. It is my contention that these faults were developed in response to the extention and development of the Deschutes Basin.
Author:
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ISBN:
Category : Geology
Languages : en
Pages : 550
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Author:
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ISBN:
Category :
Languages : en
Pages : 656
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Author: Richard Matthew Wilkening
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 264
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Author:
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Category : Geology
Languages : en
Pages : 24
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Author: Wade H. Shafer
Publisher: Springer Science & Business Media
ISBN: 1461534747
Category : Science
Languages : en
Pages : 421
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Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS) * at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all con cerned if the printing and distribution of the volumes were handled by an interna tional publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Cor poration of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 34 (thesis year 1989) a total of 13,377 theses titles from 26 Canadian and 184 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this important annual reference work. While Volume 34 reports theses submitted in 1989, on occasion, certain univer sities do report theses submitted in previous years but not reported at the time.
Author: M. P. Foose
Publisher:
ISBN:
Category : Badlands Additions Wilderness (Or.)
Languages : en
Pages : 206
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Author: Joel R. Bergquist
Publisher:
ISBN:
Category : Badlands Additions Wilderness (Or.)
Languages : en
Pages : 24
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Author:
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ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 24
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