Original 1906 Photo: Military Setting up in Presidio After San Fran Earthquake for Sale

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Original 1906 Photo: Military Setting up in Presidio After San Fran Earthquake For Sale

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Original 1906 Photo: Military Setting up in Presidio After San Fran Earthquake:
$190.40

Extremely Rare Photo:US Military Setting Up
in the Presidio after the 1906 Earthquake

Date/Era:1906

SizePhoto 1:8” x 6”

SizePhoto 2:5” x 4”

Color:Sepia

Provenance: This scrapbook page was in a lot that I purchased at a Napa California estate sale in 2010. It was part of a large collection of San Francisco earthquake photos.

ContentPhoto 1:A field is pictured in the San Francisco Presidio where citizens and soldiers set up tents and prepare to deal with the destruction. Many horses, tents and supplies are visible. When studying

ContentPhoto 2: Presidio driveway in the Main post, with cannonball edging. This is near the Old Parade Ground, with the lattice wind fencing visible to the left.

NOTE THAT THESE TWO IMAGES ARE FIXED TO ONE PIECE OF ALBUM PAPER - BACK TO BACK.

ConditionPhoto 1:has a hole in the upper right corner and a tear in the upper left edge. The bottom right corner is torn away and the edges and remaining corners are worn from age.

Condition Photo 2: bottom left corner is slightly bent.

Return Policy:We do not accept returns on rare original photographs because unscrupulous buyers purchase, scan and return them. All purchases are protected by the guarantee that you may return anything if it is not "as represented."

More info: The California earthquake of April 18, 1906 ranks as one of the most significant earthquakes of all time. Today, its importance comes more from the wealth of scientific knowledge derived from it than from its sheer size. Rupturing the northernmost 296 miles (477 kilometers) of the San Andreas fault from northwest of San Juan Bautista to the triple junction at Cape Mendocino, the earthquake confounded contemporary geologists with its large, horizontal displacements and great rupture length. Indeed, the significance of the fault and recognition of its large cumulative offset would not be fully appreciated until the advent of plate tectonics more than half a century later. Analysis of the 1906 displacements and strain in the surrounding crust led Reid (1910) to formulate his elastic-rebound theory of the earthquake source, which remains today the principal model of the earthquake cycle.

At almost precisely 5:12 a.m., local time, a foreshock occurred with sufficient force to be felt widely throughout the San Francisco Bay area. The great earthquake broke loose some 20 to 25 seconds later, with an epicenter near San Francisco. Violent shocks punctuated the strong shaking which lasted some 45 to 60 seconds. The earthquake was felt from southern Oregon to south of Los Angeles and inland as far as central Nevada. The highest Modified Mercalli Intensities (MMI's) of VII to IX paralleled the length of the rupture, extending as far as 80 kilometers inland from the fault trace. One important characteristic of the shaking intensity noted in Lawson's (1908) report was the clear correlation of intensity with underlying geologic conditions. Areas situated in sediment-filled valleys sustained stronger shaking than nearby bedrock sites, and the strongest shaking occurred in areas where ground reclaimed from San Francisco Bay failed in the earthquake. Modern seismic-zonation practice accounts for the differences in seismic hazard posed by varying geologic conditions.

As a basic reference about the earthquake and the damage it caused, geologic observations of the fault rupture and shaking effects, and other consequences of the earthquake, the Lawson (1908) report remains the authoritative work, as well as arguably the most important study of a single earthquake. In the public's mind, this earthquake is perhaps remembered most for the fire it spawned in San Francisco, giving it the somewhat misleading appellation of the "San Francisco earthquake". Shaking damage, however, was equally severe in many other places along the fault rupture. The frequently quoted value of 700 deaths caused by the earthquake and fire is now believed to underestimate the total loss of life by a factor of 3 or 4. Most of the fatalities occurred in San Francisco, and 189 were reported elsewhere.

Item Number: R162