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The Kettleman North Dome Oil Field is a large oil and gas field in Kings and Fresno Counties, California. Discovered in 1928, it is fifteenth largest field in the state by total ultimate oil recovery, and of the top twenty oil fields it is the closest to exhaustion, with less than one-half of one percent of its total original oil remaining in place.〔(California Department of Conservation, Oil and Gas Statistics, Annual Report, December 31, 2006 ), p. 67〕 ==Setting== The Kettleman North Dome occupies the northernmost portion of the Kettleman Hills, a northwest-southeast trending line of hills about long which parallels the San Andreas Fault to the west. The range consists of two elongate "domes", the North Dome and Middle Dome; a portion of the Middle Dome is sometimes called the "South Dome," although the North and Middle Dome are the most topographically distinct. Both the North and Middle Domes overlie oil fields. The Kettleman Hills is named, and misspelled, after Dave Kettelman, a pioneer sheep and cattle rancher who grazed his animals there in the 1860s.〔Brown, Robert R. and Richmond, J.E., ''History of Kings County'', p.123, A.H. Cawston, Hanford, CA, 1940〕 The hills, which rise to an elevation of approximately , divide the San Joaquin Valley on the east from the much smaller Kettleman Plain to the west. They are discontinuous, as indicated by their name ("hills" rather than "ridge"). The predominant vegetation in the hills themselves is grassland, with surrounding areas containing grassland, low scrub, orchards, and agricultural fields. The climate is arid, with 6 to of precipitation per year on the average, all falling as rain. Summers are hot, with daily highs regularly exceeding in the summer months, and winters are cool with occasional freezes. Interstate 5 parallels the range of hills to the northeast, and SR 33 to the southwest. State Route 41, which runs from Paso Robles to Kettleman City to Fresno, crosses the hills at the southern extremity of the North Dome, and SR 269, which connects the town of Avenal to Interstate 5, crosses the hills in the middle of the North Dome. North Dome itself is one of the longest of the California oil fields; only Midway-Sunset is longer. Its long axis, northwest to southeast, is approximately , and it is almost three miles (5 km) across at its widest point.〔DOGGR, p. 240〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Kettleman North Dome Oil Field」の詳細全文を読む スポンサード リンク
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