Evening star. [volume] (Washington, D.C.) 1854-1972, 1906-06-04
EARTHQUAKE REPORT
STATEMENT BY A COMMITTEE TO
GOV. PARDEE.

SACRAMENTO, Cal, June 4.-The prelim-
mary report of the state earthquake inves-
tgation committee was received yesterday
at the office OF Gov. Pardee Under the
heading of the results the report says:
lone of the marked features of the coast
ranges of CaIforpJa L i''ee OF peculiar
geomorphic construction, which extends
obliauely across the entire width or the
mountainous belt from Mendocino county to
Riverside county. The surface feature
along this line has been formed by ois-
location of the earth's crust, or series
of dislocations In times past. with a DIFF
ferential movement of the parts on either
side OF the plane of rupture"
The movements that produced the line
are attributed to separate earthquakes, ex-
tending back into the quarternary period
In general terms, the causes of these
movements are attributed to the theory
that stresses are generated IN the earth
crust, and accumulate until they exceed
the strength of the rocks composing the
crust and find relief in sudden rupture
The earthquake of April Is is said to have
been due to one of these movements, ana
the extent of the rift Is described as ex-
tending from the vicinity of Point Arena
to the neighborhood Of San Juan, Benito
county distance of 1S5 miles.
The evidence of the rupture and of the
differentfal movement is clearly defined in
a continuous furrow in the surface soil
several feet wide. The average 1.orlzontal
| dispIacemen Is twenty feet wide. In Sono-
ma and Mendocino counties there is dif-
| ferent vertical movement not exceeding
| four feet.
..In consequence of this movement" the
report goes on to say, lit Is probable that
| the ATTITUDES and longitudes Of all points IN
| the coast range have been permanently
| changed a few feet A complete study of
the phenomena will undoubtedly contri-
| butte greatly not only to our knowledge OF
| the evolution of the earth's crust, but also
| to our knowledge of the means or min
| irnizing the calamities which arise from the
destruction OF buildings and water pipes
| when such shocks occur In the future.
Modern classes of structures appear to
have been relatively passive, while the
| made ground in their vicinity was pro-
| foundry disturbed The weak points in
| frame buildings were the faulty underpin-
| ming. lack of bracing and the chimneys.
| Pipe lines, on low swanpys ground. or
| made ground, are in greater danger of de-
struction than those on high ground I'M
| derlaid
In San Francisco the most violent de-
struction of buildings was on made ground,
which behaved as jelly in a bowl.
| The minor shocks continued for many
days after April Is, and In this respect
| the earthquake accords In behavior with
| other earthquakes in the past. The minor
| shocks which succeeded the main one are
| interpreted generally as due to subordinate
| adjustments of the earth's crust in the ten
dency to reach equilibrium after these chief
! movements"
Heavy Rains In Northern California
| SAN FRANCISCO, June A heavy rain.
| accompanied by high winds. prevailed here
yesterday and almost unprecedented wealth
er prevailed throughout the northern por-
| ton of the state II is twenty-five years
according to the local weather bureau, since
| similar conditions were experienced at this
| terday was 30 inches, making the sea-
| sonal precipitation 20.37 inches.
Comparatively little suffering was caused
| by the rain throughout the refugee camps.
They were forewarned by last weeks down.
pour and were in some measure prepared
/ for II.