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the formation .-.___I_____ Siliceous rocks ______ ._______ Diatomaceous rocks __... Porcelaneous rocks __...__. Chert and cherty shale..____ The silica minerals of the siliceous rocks_ Clastic shale, mudstone, and sandstone______ Carbonate beds and concretions_________ Pyroclastic material in the Monterey formation...._.. Volcanic ash beds_______________________ Bentonite beds ____________________________ Relations of the unaltered vitric tuffs and the bentonite beds _.

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North slope. of hills. ____________ San Pedro area. ________________ IV CONTENTS Stratigraphy and paleontology Continued. Pleistocene series Continued. Marine terrace deposits Continued. Palos Verdes sand_ _____________________ General features. ___________________ Stratigraphy and lithology _ __________ Deadman Island________________ Southern San Pedro _ __________ Northern San Pedro ___ ________ Gaffey anticline and syncline east of Palos Verdes Drive North. __ Gaffey anticline west of Palos Verdes Drive North.'. ____________ North border of hills between Bent Spring Canyon and Hawthorne North border of hills between Hawthorne Avenue and Malaga Malaga Cove Foraminif era_ Corals _ ____ Echinoids-_ __ Bryozoa. ____ Brachiopods. Mollusks_ _--Chitons