Abstract
The McCloud Limestone, eastern Klamath terrane, California, represents one of several areas of carbonate deposition in an Early Permian island arc west of North America. The McCloud formed isolated platforms about 30 km long. Platform development began on volcanic highs as bank deposits and ramps of mixed volcaniclastic and carbonate sediments. Continued bank growth resulted in slope deposits of argillaceous spiculitic wackestone, limestone conglomerates, and limestone turbidites. Lateral growth of platforms occurred by progradation of slope deposits, and platform top deposits consisted mainly of packstone and wackestone of subtidal origin. Rapid subsidence of platforms resulted in sediment accumulation rates of up to 30 cm/1000 yr. The data presented here help to characterize the tectonosedimentary regimes of island arcs in general.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
