An Expedition to Mount St. Elias, AlaskaRussell, Israel C. (Cook)
History
An Expedition to Mount St. Elias, Alaska
Russell, Israel C. (Cook)
Alaska -- Description and travel; Saint Elias, Mount (Alaska and Yukon)
Beyond the bordering moraines at our feet, we can look far out over
the ice-plateau and view hundreds of square miles of its {121} frozen
surface. At the same time we obtain glimpses of other vast ice-fields
toward the west, beyond Icy bay; but their limits in that direction
are unknown.
* * * * *
Later in the season I made an excursion far out on the Malaspina
glacier from the extreme southern end of the Hitchcock range, and
became acquainted with many of its peculiarities. Its surface, instead
of being a smooth snow-field, as it appears from a distance, is
roughened by thousands of crevasses, many of which are filled with
clear, blue water. Over hundreds of square miles the surface appears
as if a giant plow had passed over it, leaving the ice furrowed with
crevasses. The crevasses are not broad; usually one can cross them at
a bound. They appear to be the scars left by rents in the tributary
ice-streams.
The stillness far out on the great ice-field is immediately noticed by
one who has recently traversed the sloping surfaces of the tributary
glaciers. It is always silent on that vast frozen plateau. There are
no surface streams and no lakes; not a rill murmurs along its channel
of ice; no cascades are formed by streams plunging into moulins and
crevasses. The water produced by the melting of the ice finds its way
down into the glacier and perhaps to its bottom, and must there form
rivers of large size; but no indications of their existence can be
obtained at the surface. The icy surface is undulating, and resembles
in some respects the great rolling prairies of the west; it is a
prairie of ice. In the central portion not a shoot of vegetation casts
its shadow, and scarcely a fragment of rock can be found. The
boundaries of the vast plateau have never been surveyed, but its area
cannot be less than five hundred square miles. The clear ice of the
center greatly exceeds the extent of the moraine-covered borders. It
has a general elevation of fifteen or sixteen hundred feet, being
highest near the end of the Hitchcock range, where the Seward glacier
comes in, and decreasing from there in all directions. From the summit
of Blossom island and other commanding stations it is evident that the
dark moraine belts about its borders are compound and record a varied
history. Far away toward the southeast the individual elements may be
distinguished. The dark bands of débris sweep around in great curves
and concentric, swirl-like figures, which indicate that there are
complicated currents in the seemingly motionless plateau.
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