1913J 



Louderback: The Monterey Series 



195 



(p. 180). In the Report of the Superintendent of the Coast 

 Survey, 23 they are again called "Tertiary Strata" (p. 391), and 

 Monterey is only used in the expression "strata ahout Monte- 

 rey." In Map no. 59, the formations in the " Vicinity of Mon- 

 terey Bay" are plotted, and the strata under discussion are 

 mapped as "Tertiary," not as "Monterey shale" or other similar 

 designation, although in Map no. 58, of San Francisco harbor, 

 the "San Francisco Sandstone" is so designated and "Tertiary" 

 written after it. This is really not a very important point, and 

 would not here be discussed were it not that in several publi- 

 cations of the U. S. Geological Survey 24 it is distinctly stated 

 that the "Monterey formation" (as a stratigraphic unit) was 

 named and described in the paper above referred to. 



These formations were also referred to or described by other 

 early geologists, such as Trask, 23 Whitney, 20 and Becker, 27 who 

 generally referred to their most characteristic type as bituminous 

 "slates. " 



DECADE 1893-1903: RECOGNITION OF SERIES AS STRATIGRAPHIC 

 UNIT AND EXTENSION OF KNOWLEDGE OF ITS 

 AREAL DISTRIBUTION 



Carmelo Bay, Lawson, 1893. — The first definite application of 

 a local name to the series as a stratigraphic unit was made by 

 A. C Lawson in "The Geology of Carmelo Bay," published in 

 1893. 2S ' ' The Miocene formations are abundantly developed . . . 

 The series was among the first which attracted the attention of 

 the earlier writers, Trask and Blake, and it has since become 

 famous for the 'infusorial' remains which it contains, being- 

 known to collectors as the Monterey formation. 2 ' 1 This name, 



23 Report of the Superintendent of the Coast Survey showing the pro- 

 gress of the Survey during the year 1855 (1856), Appendix no. 65, pp. 

 390-392. 



24 Bull. 191 (1902), Prof. Paper 47 (1906), Bull. 321 (1907), Bull. 322 

 (1907). 



25 Report on the Geology of the Coast Mountains, etc. Assembly Jour- 

 nal, 5th Session, 1854, Legislature, State of California, Appendix, doe. no. 

 9; 6th Session, 1856, Appendix, doc. 14. 



20 Calif ornia Geological Survey, Geology, vol. I (1865). 



U. S. Geol. Surv., Bull. no. 19 (1885); Monograph 13, p. 185 (1888). 



28 Bull. Dept. Geol. Univ. of Calif., vol. 1, pp. 1-59 (1893). 



2i) In the meaning given by collectors and prospectors, formation means 

 any type of deposit or product — really a rough petrographical term, as 

 "stalactite formation," "lime formation." 



