SDAG Historical Geological Maps, San Diego County

MAP NUMBER: 1

Map Title	Geological Map of the Country between San Diego and the Colorado River, California
Author	Blake, W.P.
Year Published	1855
Reference	Parke, J.G., Lt., and Campbell, A.H., 1854-1855, Report of Explorations for Railroad Routes from San Francisco Bay to Los Angeles, California, West of the Coast Range, and from The Pimas Villages on the Gila to the Rio Grand, near the 32d Parallel of North Latitude, in: Reports of Explorations and Surveys to Ascertain the Most Practicable and Economical Route for a Railroad from the Mississippi Rover to the Pacific Ocean, made under the direction of the Secretary of War, in 1853-6, According to Acts of Congress of Mar 3, 1853, May 31, 1854, and August 4, 1854, Volume VII., Washington, Chapter XVIII - Geology of the District from San Diego to Fort Yuma, 119-129, Chapter XXVIII - List of Minerals Collected, 187-188, Plate VIII.
Scale	1:608,228
Quadrangle	Southern California
Source	Jeffrey Patterson

MAP NUMBER: 2

Map Title	Preliminary Geologic Map of San Diego County, California
Author	Ellis, A.J.
Year Published	1919
Reference	Preliminary Geologic Map of San Diego County, California, Plate III, in Ellis & Lee, 1919, USGS Water Supply Paper 446.
Scale	1:250,000
Quadrangle	San Diego County (San Luis Rey, Ramona, and Cuyamaca, (San Diego) 30')
Source	Pomona College

MAP NUMBER: 3

Map Title	Map of San Diego Quadrangle, California, showing marine terraces and marine soundings
Author
Year Published	1919
Reference	Map of San Diego Quadrangle, California, showing marine terraces and marine soundings, Plate VI, in Ellis & Lee, 1919, USGS Water Supply Paper 446.
Scale	1:62,500
Quadrangle	San Diego 15'
Source	Pomona College

MAP NUMBER: 4

Map Title	Geological Map of the Cuyamaca Region
Author	Hudson, F.S.
Year Published	1922
Reference	Hudson, F.S., 1922, Geology of the Cuyamaca Region of California, with special reference to the origin of nickeliferous pyrrhotite: University of California, Department of Geological Sciences Bulletin, v. 13, pp. 175-252.
Scale	1:62,500
Quadrangle	Ramona 30' (southeastern corner) and Cuyamaca 30' (northeastern corner)
Source	George Copenhaver

MAP NUMBER: 5

Map Title	Geologic Map of the La Jolla Quadrangle Geologic Map of the La Jolla Quadrangle (7.5 MB JPEG)
Author	Hanna, Marcus A.
Year Published	1926
Reference	Hanna, Marcus A., 1926, Geology of the La Jolla Quadrangle, California, University of California Department of Geological Sciences Bulletin, Volume 16, number 7, pages 187-246.
Scale	1:62,500
Quadrangle	La Jolla 15'
Source	UC Berkeley

MAP NUMBER: 6

Map Title	Geologic Map of the Corona, Elsinore, and San Luis Rey Quadrangles, California
Author	Larsen, Esper S., Jr.
Year Published
Reference	Larsen, Esper S., Jr., 1948, Batholith and Associated Rocks of Corona, Elsinore, and San Luis Rey Quadrangles, Southern California, Geological Society of America Memoir 29, Plate 1.
Scale	1:125,000
Quadrangle	Corona, Elsinore, and San Luis Rey
Source	Pomona College

MAP NUMBER: 7

Map Title	Geologic Map of the Cuyamaca Peak Quadrangle, California
Author	Everhart, Donald L.
Year Published	1951
Reference	Everhart, Donald L., 1951, Geology of the Cuyamaca Peak Quadrangle, San Diego County, California, CDM Bull. 159, Plate 2 "Geologic Map of the Cuyamaca Peak Quadrangle, California"
Scale	1:62,500
Quadrangle	Cuyamaca Peak 15'
Source	Pomona College

MAP NUMBER: 8

Map Title	Generalized geologic map of the Peninsular Range province, southern California
Author	Jahns, Richard H.
Year Published	1954
Reference	CDMG, 1954, Geology of Southern California, Bulletin 170, Chapter II, Plate 3 "Generalized geologic map of the Peninsular Ranges province, southern California," scale 1:380,160 (6 mile per inch), compiled by R.H. Jahns.
Scale	1:380,160
Quadrangle	Southern California
Source	Pomona College

MAP NUMBER: 9

Map Title	Areal Geology Map of the Jacumba Quadrangle, San Diego and Imperial Counties, California
Author	Edited by Baylor Brooks and Ellis Roberts (Field Geology Classess of San Diego State College)
Year Published	1954
Reference	CDMG, 1954, Geology of Southern California, Bulletin 170, Map Sheet 23 "Geology of the Jacumba area, San Diego and Imperial Counties," by Baylor Brooks and Ellis Roberts
Scale	1:62,500
Quadrangle	Jacumba 7.5' (part), In-Ko-Pah Gorge 7.5' (part)
Source

MAP NUMBER: 10

Map Title	A typical portion of the southern California batholith
Author	Merriam, Richard
Year Published	1954
Reference	CDMG, 1954, Geology of Southern California, Bulletin 170, Map Sheet 22 "A typical portion of the southern California batholith, San Diego County," by Richard Merriam
Scale	1:62,500
Quadrangle	Valley Center (part)
Source

MAP NUMBER: 11

Map Title	Geologic Map of the Santa Ysabel Quadrangle, California
Author	Merriam, Richard
Year Published	1958
Reference	Merriam, R.H., 1958, Geologic Map of the Santa Ysabel Quadrangle, San Diego County, California, Div Mines Bull. 177, Plate 1
Scale	1:62,500
Quadrangle	Santa Ysabel 15'
Source	Pomona College

MAP NUMBER: 12

Map Title	Economic Map of the Santa Ysabel Quadrangle, California
Author	Merriam, Richard
Year Published	1958
Reference	Merriam, R.H., 1958, Economic Map of the Santa Ysabel Quadrangle, San Diego County, California, Calif. Div Mines Bull. 177, Plate 1-A
Scale	1:62,500
Quadrangle	Santa Ysabel 15'
Source	Pomona College

MAP NUMBER: 13

Map Title	Plate 1 - Low Resolution JPG, 1920px × 1444px (1.0 MB) Plate 1 - High Resolution JPG, 14875px × 11194px (20.1 MB)
Author	Weber, F.H., Jr.
Year Published	1963
Reference	"Geology and Mineral Resources of San Diego County, California" Plate 1, in Weber, F.H., Jr., 1963, Mines and mineral resources of San Diego County, California, CDMG County Report 3
Scale	1:127,000
Quadrangle	San Diego County
Source	Pomona College

MAP NUMBER: 14

Map Title	Map of San Diego County Showing Topgraphic Map Coverage and Geologic Mapping Adapted for Plate 1
Author	Weber, F.H., Jr.
Year Published	1963
Reference	"Map of San Diego County Showing Topgraphic Map Coverage and Geologic Mapping Adapted for Plate 1," Plate 2, in Weber, F.H., Jr., 1963, Mines and mineral resources of San Diego County, California, CDMG County Report 3
Scale	1:500,000
Quadrangle
Source	Pomona College

MAP NUMBER: 15

Map Title	Geology and Mineral Deposits of the Julian District, San Diego County, California
Author	Weber, F.H., Jr.
Year Published	1963
Reference	"Geology and Mineral Deposits of the Julian District, San Diego County, California" Plate 7, in Weber, F.H., Jr., 1963, Mines and mineral resources of San Diego County, California, CDMG County Report 3
Scale	1:20,850
Quadrangle	Julian District
Source	Pomona College

MAP NUMBER: 16

Map Title	A Reconnaissance Geology Map of the Sweetwater Formation in Southwest San Diego County, California
Author	Herman T. Kuper
Year Published	1976
Reference	Unpublished Map used as the basis for monochrome Plates 1-4 "Reconnaissance of the Marine Sedimentary Rocks of South Western Wan Diego County" from Geology of Southwestern San Diego County and Northwestern Baja California, edited by Gregory T. Farrand. San Diego Association of Geologists field trip guidebook. 1977.
Scale	1:24,000
Quadrangles	Imperial Beach, National City,Otay Mesa, Jamul Mountains
Source	Tom Kuper