. Bulletins of American paleontology. 18 BULLHTIN 371 Table I.—Continued. Lilhoslnifii^rtipliic unit Author, ret f If nee Lithiiliifjii deseription. type lueiility. iifie Stadium Congkunerate Torrev Sandstone M. P. Kennedy and G. W, Moore (1971) named in Poway Group. M. A. Hanna (1926) named as Member of La Jolla Formation of Clark (1926); M. R Kenne- dy and G. W. Moore (1971) raised to formation of La Jolla Group. Unit is a massive cobble and boulder conglomerate that contains dis- tinctive slightly metamorphosed volcanic and volcaniclastic Poway clasts. Type section is in the northern wall o
. Bulletins of American paleontology. 18 BULLHTIN 371 Table I.—Continued. Lilhoslnifii^rtipliic unit Author, ret f If nee Lithiiliifjii deseription. type lueiility. iifie Stadium Congkunerate Torrev Sandstone M. P. Kennedy and G. W, Moore (1971) named in Poway Group. M. A. Hanna (1926) named as Member of La Jolla Formation of Clark (1926); M. R Kenne- dy and G. W. Moore (1971) raised to formation of La Jolla Group. Unit is a massive cobble and boulder conglomerate that contains dis- tinctive slightly metamorphosed volcanic and volcaniclastic Poway clasts. Type section is in the northern wall of Mission Valley (along Interstate 8 near the San Diego Stadium), at the boiLndary between the La Jolla and La Mesa 7'/2-minute quadrangles. It crops out from east of Del Mar to south of the mouth of Mission Valley. Middle (?) and Late Eocene (M. P. Kennedy and G. W, Moore, 1971). White to light brown arkosic sandstone intertingers with and grades into the overlying transgressive Ardalh Shale. Type section is on the Torrey Pines Grade of Highway 101 where it climbs from Sole- dad Valley to the south, in (he La Jolla 7":-minu(e quadrangle. Middle Eocene, based on Us association with (he well-dated, inter- fingering Ardath Shale. Text-figure 4.—Rosarito embayment. Tijuana basin in the north and La Mision basin in the south. Map modified from Ashby {1989b). Open circles indicate type sections: 1, Otay formation, in- formal name; 2, Sweetwater Formation; 3, Rosarito Beach Forma- tion; 4, Buenos Aires Formation; 5, Delicias Formation; 6, Redonda Formation. Fault abbreviations: LNF^ La Nacion Fault; LBF, Los Buenos Fault; ACF, Agua Caliente Fault. La Gloria is east of the .Agua Caliente Fault and west of La Presa. Beach. Hertlein and Grunt (1944) reported a total thickness of 373 m ( 1,230 ft) for the formation in the Chula Vista and San Ysidro areas; Minch (1967) cal- culated only 85 to 90 m for the section near Tijuana, the same thickness determined by Demere (1983) for th
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