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Clevelin Hills
The Clevelin Hills are a range of hills in the Peninsular Ranges System, within the Temescal Mountains in western Riverside County, in southern California.
The hills range from an elevation of over in the southeastern section, to the range's high point of in elevation, in the northwestern section.
==Geology==
The Clevelin Hills are the horst, on the edge of the Perris Block, thrown up on the northeast side of the graben of the Elsinore Valley, close to the shore of Lake Elsinore, along the Glen Ivy Fault.〔Rene Engel, Geology and Mineral Deposits of the Lake Elsinore Quadrangle California, California Department of Natural Resources, Bulletin 146, Division of Mines, San Francisco, 1959, pp. 16−25〕
The Clevelin Hills are composed of a number of different rock formations. In the southeast along the Lake Elsinore shore they are composed of Triassic Santa Ana Formation and Jurassic dacite and gabbro. To the northeast they are composed mostly of Lower Pleistocene or older fanglomerate underlain by Cretaceous grandiorite. There are exposures of Eocene Martinez Formation on its southwest slopes and northeast slopes. Some Santa Ana Formation rocks are found on the northwest end of the range, and at Canyon Lake.〔( Rene Engel, Geologic Map of the Lake Elsinore Quadrangle, Bulletin 146, State of California, Department of Resources, Division of Mines, San Francisco, 1959 )〕
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