Some Engineering Problems Of The Panama Canal In Their Relation To Geology And Topography
Forfatter: Donald F. MacDonald
År: 1915
Forlag: Washington Government printing Office
Sted: Washington
Sider: 88
UDK: 626.1
Published With The Approval Of The Govenor Of The Panama Canal
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BULLETIN 86 PLATE I
HILL TYPE OF TOPOGRAPHY, LOOKING SOUTHWARD AND SOUTHEASTWARD FROM ZION (RESERVOIR) HILL, CULEBRA.
a, Gold Hill, b, Conti actors Hill, c, Ancon Hill, d, Culebra Cut. The hills are composed of igneous rocks ; most of the valleys are in softer
sedimentary rocks.