186 SOUTHERN CALIFORNIA GEOLOGY 



structure to be that of a broad, open fold with occa- 

 sional cross-gaps and accompanied by a line of strike 

 faulting. 



The Dominguez Range is paralleled on its south 

 slope for most of its extent by a line of faults (the 

 Inglewood Fault) as described on a previous page. 

 To the north its structure is lost in that of the Santa 

 Monica Range. 



The structure of that portion of the chain to the 

 north of the city of Inglewood, including Inglewood 

 Hill, differs somewhat from that portion to the south- 

 east, in that the dominant fault line splits into several 

 members and its course becomes axial instead of lat- 

 eral. Likewise its extent along the Rincon and Beverly 

 Hills becomes uncertain and obscured by outwash from 

 the north-lying Santa Monica Hills. There are other 

 complications to the north which I am not as yet able 

 to explain. 



The Dominguez Range and its attendant Inglewood 

 fault are of the age of the last half of the Pleistocene 

 epoch. It is composed in part of strata of early Pleis- 

 tocene age, is bordered on its seaward side by late 

 Pleistocene marine strata (the Centinella formation 

 of Tieje) and on its landward (Los Angeles) side by 

 two succeeding formations of continental Pleistocene 

 locustral ("Playa") type of strata. The oldest of these, 

 the Blue Clays of Tieje's section, contain the La Brea 

 vertebrate fauna, while the latest, the La Cienega 

 beds, contain human remains beneath overlying fluvia- 

 tile, peat-bearing lacustral, Eolian and outwash forma- 

 tions. Hence the folded Dominguez Range and its 

 accompanying Inglewood Fault were chiefly made after 

 the beginning of the Pleistocene epoch and prior to its 



