Klamath Mountains

In addition to anthropogenic pollution, some serpentine soils derived from Fe and Mg-rich ultramafic rocks are enriched in Ni, Cr and Co. In North America, ultramafic rocks form two discontinuous bands along the east and west side of the continent. The largest area of ultramafic terrain is in the Klamath Mountains province of northern California and southern Oregon (Lee et al., 2001). Serpentinite is a metamorphic rock formed from low... 

The Sacramento Valley is a tectonically controlled basin bounded on the east by the Sierra Nevada, on the west by the Coast Ranges, and on the north by the Klamath Mountains. The alluvium of the valley reflects inputs from these bounding... 

Soil with elevated content of these elements occurs along the Sacramento River in both levee and adjacent flood basin settings. We interpret that transport of sediment impacted by large metal sulfide mines located in the Klamath Mountains at the north end of the Valley has caused this pattern. 

Figure 3 Location of the main ophiolitic belts and ophiolite complexes mentioned in the text (after Coleman, 1977 Ishiwatari, 1994 Moores et al., 2000). (1) Circum-Pacific Phanerozoic Multiple Ophiolite Belt (450-0 Ma) KM— Klamath Mountains (Trinity and Josephine, western USA) NC—New Caledonia PNG—Papua-New Guinea IB— Indonesian Back-Arc ophiolites. (2) Himalaya-Alps-Caribbean Mesozoic Belt (150-80 Ma) YZ—ophiolites of the Yarlung Zangbo Suture Zone, China OM—Oman (=Semail ophiolite). Sultanate of Oman and Unites Arab Emirates TR—Troodos, Cyprus VO—Vourinos and Pindos, Greece WA—Western Alps (Internal Ligurides and Lanzo) CU—Cuba ophiolites. (3) Appalachian-Caledonian Belt (450 Ma) BOI—Bay of Islands, Newfoundland.

Quick J. E. (1981) Petrology and petrogenesis of the Trinity peridotite, an upper mantle diapir in the eastern Klamath mountains, northern California. J. Geophys. Res. 86, 11837-11863. 

Turgeon, S., and Lundberg, J, in press. Chronology of discontinuities and petrology of speleothems as paleochmatic indicators of the Klamath mountains, southwest Oregon, USA. Carbonates and Evaporites. 

No subspecies or varieties are recognized for western white pine. Nonetheless, populations in the Sierra Nevada, Klamath and Warner mountains in the southern portion of its range have been observed to differ substantially from those farther north (Steinhoff et ah, 1983). 

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