THE Grand Canyon is a gorge 217 miles in length, through which
flows a great river with many storm–born tributaries. It has a
winding way, as rivers are wont to have. Its banks are vast
structures of adamant, piled up in forms rarely seen in the mountains.
Down by the river the walls are composed of black gneiss, slates, and
schists, all greatly implicated and traversed by dikes of granite. Let
this formation be called the black gneiss. It is usually about 800 feet in
thickness.
Then over the black gneiss are found 800 feet of quartzites, usually in
very thin beds of many colors, but exceedingly hard, and ringing under
the hammer like phonolite. These beds are dipping and unconformable
with the rocks above; while they make but 800 feet of the wall or less,
they have a geological thickness of 12,000 feet. Set up a row of books
aslant; it is 10 inches from the shelf to the top of the line of books, but
there may be 3 feet of the books measured directly through the leaves.
So these quartzites are aslant, and though of great geologic thickness,
they make but 800 feet of the wall. Your books may have many–colored bindings and differ greatly in their contents; so these quartzites
vary greatly from place to place along the wall, and in many places
they entirely disappear. Let us call this formation the variegated
quartzite.
Above the quartzites there are 500 feet of sandstones. They are
of a greenish hue, but are mottled with spots of brown and black by iron
stains. They usually stand in a bold cliff, weathered in alcoves. Let
this formation be called the cliff sandstone.
Above the cliff sandstone there are 700 feet of bedded sandstones and
limestones, which are massive sometimes and sometimes broken into thin strata. These rocks are often weathered in deep alcoves. Let this formation be called the alcove sandstone.
Over the alcove sandstone there are 1,600 feet of limestone, in many
places a beautiful marble, as in Marble Canyon. As it appears along
the Grand Canyon it is always stained a brilliant red, for immediately
over it there are thin seams of iron, and the storms have painted these
limestones with pigments from above. Altogether this is the red
wall group. It is chiefly limestone. Let it be called the red wall limestone.
Above the red wall there are 800 feet of gray and bright red sand
stone, alternating in beds that look like vast ribbons of landscape.
Let it be called the banded sandstone.
And over all, at the top of the wall, is the Aubrey limestone,
1,000 feet in thickness. This Aubrey has much gypsum in it, great
beds of alabaster that are pure white in comparison with the great body
of limestone below. In the same limestone there are enormous beds
of chert, agates, and carnelians. This limestone is especially remarkable for its pinnacles and towers. Let it be called the tower limestone.
Now recapitulate: The black gneiss below, 800 feet in thickness; the
variegated quartzite, 800 feet in thickness; the cliff sandstone, 500 feet
in thickness; the alcove sandstone, 700 feet in thickness; the red wall
limestone, 1, 600 feet in thickness; the banded sandstone, 800 feet in
thickness; the tower limestone, 1,000 feet in thickness.
These are the elements with which the walls are constructed, from
black buttress below to alabaster tower above. All of these elements
weather in different forms and are painted in different colors, so that the
wall presents a highly complex façade. A wall of homogeneous granite,
like that in the Yosemite, is but a naked wall, whether it be 1,000 or
5,000 feet high. Hundreds and thousands of feet mean nothing to
the eye when they stand in a meaningless front. A mountain covered
by pure snow 10,000 feet high has but little more effect on the imagination than a mountain of snow 1,000 feet high—it is but more of
the same thing; but a façade of seven systems of rock has its sublimity
multiplied sevenfold.
Let the effect of this multiplied façade be more clearly realized.
Stand by the river side at some point where only the black gneiss is
seen. A precipitous wall of mountain rises over the river, with crag
and pinnacle and cliff in black and brown, and through it runs an
angular pattern of red and gray dikes of granite. It is but a mountain
cliff which may be repeated in many parts of the world, except that it is
singularly naked of vegetation, and the few plants that find footing
are of strange tropical varieties and are conspicuous because of their
infrequency.
Now climb 800 feet and a point of view is reached where the
variegated quartzites are seen. At the summit of the black gneiss a
terrace is found, and, set back of this terrace, walls of elaborate sculpture appear, 800 feet in height. This is due to the fact that though the
rocks are exceedingly hard they are in very thin layers or strata, and
these strata are not horizontal, but stand sometimes on edge, sometimes
highly inclined, and sometimes gently inclined. In these variegated
beds there are many deep recesses and sharp salients, everywhere set
with crags, and the wall is buttressed by a steep talus in many
places. In the sheen of the midday sun, these rocks, which are besprinkled with quartz crystals, gleam like walls of diamonds.
A climb of 800 feet over the variegated beds and the foot of the cliff
sandstone is reached. It is usually olive green, with spots of brown and
black, and presents 500 feet of vertical wall over the variegated sandstone. The dark green is in fine contrast with the variegated beds
below and the red wall above.
Climb these 500 feet and you stand on the cliff sandstone. A terrace
appears, and sometimes a wall of terraces set with alcoves of marvelous
structure. Climb to the summit of this alcove
sandstone—700 feet—and
you stand at the foot of the red wall limestone. Sometimes this
stands in two, three, or four Cyclopean steps—a mighty stairway.
Oftener the red wall stands in a vertical cliff 1,600 feet high. It is
the most conspicuous feature of the grand façade and imparts its chief
characteristic. All below is but a foundation for it; all above, but an
entablature and sky–line of gable, tower, pinnacle, and spire. It is not
a plain, unbroken wall, but is broken into vast amphitheaters, often
miles around, between great angular salients. The amphitheaters also
are broken into great niches that are sometimes vast chambers and
sometimes royal arches 500 or 1,000 feet in height.
Over the red wall limestone, with its amphitheaters, chambers, niches,
and royal arches—a climb of 1,600 feet—is the banded sandstone,
the entablature over the niched and columned marble, an adamantine
molding 800 feet in thickness, stretching along the walls of the canyon
through hundreds of miles. This banded sandstone has massive strata
separated by friable shales. The massive strata are the horizontal
elements in the entablature, but the intervening shales are carved with a
beautiful fretwork of vertical forms, the sculpture of the rills. The
massive sandstones are white, gray, blue, and purple, but the shales are
a brilliant red; thus variously colored bands of massive rock are separated by bands of vertically carved shales of a brilliant hue.
On these highly colored beds the tower limestone is found, 1,000 feet
in height. Everywhere this is carved into towers, minarets, and domes,
gray and cold, golden and warm, alabaster and pure, in wonderful
variety.
Such are the vertical elements of which the Grand Canyon façade
is composed. Its horizontal elements must next be considered. The
river meanders in great curves, which are themselves broken into curves
of smaller magnitude. The streams that head far back in the plateau on
either side come down in gorges and break the wall into sections. Each
lateral canyon has a secondary system of laterals, and the secondary
canyons are broken by tertiary canyons; so the crags are forever branching, like the limbs of an oak. That which has been described as a wall
is such only in its grand effect. In detail it is a series of structures
separated by a ramification of canyons, each having its own walls. Thus,
in passing down the canyon it seems to be inclosed by walls, but oftener
by salients—towering structures that stand between canyons that
run back into the plateau. Sometimes gorges of the second or third
order have met before reaching the brink of the Grand Canyon, and
then great salients are cut off from the wall and stand out as buttes—huge
pavilions in the architecture of the canyon. The scenic elements
thus described are fused and combined in very different ways.
We measured the length of the Grand Canyon by the length of
the river running through it, but the running extent of wall cannot
be measured in this manner. In the black gneiss, which is at the
bottom, the wall may stand above the river for a few hundred yards or a
mile or two; then, to follow the foot of the wall, you must pass into
a lateral canyon for a long distance, perhaps miles, and then back again
on the other side of the lateral canyon; then along by the river
until another lateral canyon is reached, which must be headed in
the black gneiss. So, for a dozen miles of river through the gneiss,
there may be a hundred miles of wall on either side. Climbing to
the summit of the black gneiss and following the wall in the variegated
quartzite, it is found to be stretched out to a still greater length, for it is
cut with more lateral gorges. In like manner, there is yet greater
length of the mottled, or alcove, sandstone wall; and the red wall is still
farther stretched out in ever branching gorges. To make the distance
for ten miles along the river by walking along the top of the red wall, it
would be necessary to travel several hundred miles. The length of the
wall reaches its maximum in the banded sandstone, which is terraced
more than any of the other formations. The tower limestone wall is less
tortuous. To start at the head of the Grand Canyon on one of the
terraces of the banded sandstone and follow it to the foot of the Grand
Canyon, which by river is a distance of 217 miles, it would be necessary
to travel many thousand miles by the winding way; that is, the banded
wall is many thousand miles in length.
Stand at some point on the brink of the Grand Canyon where you can
overlook the river, and the details of the structure, the vast labyrinth of
gorges of which it is composed, are scarcely noticed; the elements are
lost in the grand effect, and a broad, deep, flaring gorge of many colors
is seen. But stand down among these gorges and the landscape seems to
be composed of huge vertical elements of wonderful form. Above, it is
an open, sunny gorge below, it is deep and gloomy. Above, it is
a chasm below, it is a stairway from gloom to heaven.
The traveler in the region of mountains sees vast masses piled up
in gentle declivities to the clouds. To see mountains in this way is
to appreciate the masses of which they are composed. But the climber
among the glaciers sees the elements of which this mass is composed—that
it is made of cliffs and towers and pinnacles, with intervening
gorges, and the smooth billows of granite seen from afar are transformed
into cliffs and caves and towers and minarets. These two aspects
of mountain scenery have been seized by painters, and in their art
two classes of mountains are represented: mountains with towering
forms that seem ready to topple in the first storm, and mountains in
masses that seem to frown defiance at the tempests. Both classes have
told the truth. The two aspects are sometimes caught by our painters severally; sometimes they are combined. Church paints a mountain
like a kingdom of glory. Bierstadt paints a mountain cliff where an
eagle is lost from sight ere he reaches the summit. Thomas Moran
marries these great characteristics, and in his infinite masses cliffs
of immeasurable height are seen.
Thus the elements of the façade of the Grand Canyon change vertically and horizontally. The details of structure can be seen only
at close view, but grand effects of structure can be witnessed in great
panoramic scenes. Seen in detail, gorges and precipices appear; seen
at a distance, in comprehensive views, vast massive structures are
presented. The traveler on the brink looks from afar and is overwhelmed with the sublimity of massive forms; the traveler among
the gorges stands in the presence of awful mysteries, profound, solemn,
and gloomy.
For 8 or 10 miles below the mouth of the Little Colorado, the river is
in the variegated quartzites, and a wonderful fretwork of forms and
colors, peculiar to this rock, stretches back for miles to a labyrinth of
the red wall cliff; then below, the black gneiss is entered and soon
has reached an altitude of 800 feet and sometimes more than 1,000 feet;
and upon this black gneiss all the other structures in their wonderful
colors are lifted. These continue for about 70 miles, when the black
gneiss below is lost, for the walls are dropped down by the West Kaibab
Fault, and the river flows in the quartzites.
Then for 80 miles the mottled, or alcove, sandstones are found in
the river bed. The course of the canyon is a little south of west and is
comparatively straight. At the top of the red wall limestone there
is a broad terrace, two or three miles in width, composed of hills of
wonderful forms carved in the banded beds, and back of this is seen
a cliff in the tower limestone. Along the lower course of this stretch
the whole character of the canyon is changed by another set of complicating conditions. We have now reached a region of volcanic
activity. After the canyons were cut nearly to their present depth,
lavas poured out and volcanoes were built on the walls of the canyon,
but not in the canyon itself, though at places rivers of molten rock
rolled down the walls into the Colorado.
The next 80 miles of the canyon is a compound of that found where
the river is in the black gneiss and that found where the dead volcanoes
stand on the brink of the wall. In the first stretch, where the gneiss
is at the foundation, we have a great bend to the south, and in the
last stretch, where the gneiss is below and the dead volcanoes above, another great southern detour is found. These two great beds are
separated by 80 miles of comparatively straight river. Let us call
this first great bend the Kaibab reach of the canyon, and the straight
part the Kanab reach, for the Kanab Creek heads far off in the
plateau to the north and joins the Colorado at the beginning of the
middle stretch. The third great southern bend is the Shiwits stretch.
Thus there are three distinct portions of the Grand Canyon of the
Colorado: the Kaibab section, characterized more by its buttes and salients; the Kanab section, characterized by its comparatively straight
walls with volcanoes on the brink; and the Shiwits section, which
is broken into great terraces with gneiss at the bottom and volcanoes
at the top.
The Grand Canyon of the Colorado is a canyon composed of many
canyons. It is a composite of thousands, of tens of thousands, of
gorges. In like manner, each wall of the canyon is a composite
structure, a wall composed of many walls, but never a repetition.
Every one of these almost innumerable gorges is a world of beauty
in itself. In the Grand Canyon there are thousands of gorges like
that below Niagara Falls, and there are a thousand Yosemites. Yet all
these canyons unite to form one grand canyon, the most sublime
spectacle on the earth. Pluck up Mt. Washington by the roots to
the level of the sea and drop it headfirst into the Grand Canyon, and the
dam will not force its waters over the walls. Pluck up the Blue
Ridge and hurl it into the Grand Canyon, and it will not fill it.
The carving of the Grand Canyon is the work of rains and rivers.
The vast labyrinth of canyon by which the plateau region drained
by the Colorado is dissected is also the work of waters. Every river has
excavated its own gorge and every creek has excavated its gorge. When
a shower comes in this land, the rills carve canyons—but a little at each
storm; and though storms are far apart and the heavens above are
cloudless for most of the days of the year, still, years are plenty in the
ages, and an intermittent rill called to life by a shower can do much
work in centuries of centuries.
The erosion represented in the canyons, although vast, is but a small
part of the great erosion of the region, for between the cliffs blocks have
been carried away far superior in magnitude to those necessary to fill
the canyons. Probably there is no portion of the whole region from
which there have not been more than a thousand feet degraded, and there
are districts from which more than 30,000 feet of rock have been carried
away. Altogether, there is a district of country more than 200,000
square miles in extent from which on the average more than 6,000 feet
have been eroded. Consider a rock 200,000 square miles in extent and a
mile in thickness, against which the clouds have hurled their storms and
beat it into sands and the rills have carried the sands into the creeks and
the creeks have carried them into the rivers and the Colorado has carried
them into the sea. We think of the mountains as forming clouds about
their brows, but the clouds have formed the mountains. Great
continental blocks are upheaved from beneath the sea by internal geologic
forces that fashion the earth. Then the wandering clouds, the tempest–bearing clouds, the rainbow–decked clouds, with mighty power and with
wonderful skill, carve out valleys and canyons and fashion hills and
cliffs and mountains. The clouds are the artists sublime.
In winter some of the characteristics of the Grand Canyon are emphasized. The black gneiss below, the variegated quartzite, and the green
or alcove sandstone form the foundation for the mighty red wall. The
banded sandstone entablature is crowned by the tower limestone. In
winter this is covered with snow. Seen from below, these changing
elements seem to graduate into the heavens, and no plane of demarcation
between wall and blue firmament can be seen. The heavens constitute
a portion of the façade and mount into a vast dome from wall to wall,
spanning the Grand Canyon with empyrean blue. So the earth and
the heavens are blended in one vast structure.
When the clouds play in the canyon, as they often do in the rainy
season, another set of effects is produced. Clouds creep out of canyons
and wind into other canyons. The heavens seem to be alive, not moving
as move the heavens over a plain, in one direction with the wind,
but following the multiplied courses of these gorges. In this manner
the little clouds seem to be individualized, to have wills and souls
of their own, and to be going on diverse errands—a vast assemblage of
self–willed clouds, faring here and there, intent upon purposes hidden in
their own breasts. In the imagination the clouds belong to the sky, and
when they are in the canyon the skies come down into the gorges and
cling to the cliffs and lift them up to immeasurable heights, for the
sky must still be far away. Thus they lend infinity to the walls.
The wonders of the Grand Canyon cannot be adequately represented
in symbols of speech, nor by speech itself. The resources of the graphic
art are taxed beyond their powers in attempting to portray its features.
Language and illustration combined must fail. The elements that unite
to make the Grand Canyon the most sublime spectacle in nature are multifarious and exceedingly diverse. The Cyclopean forms which result
from the sculpture of tempests through ages too long for man to compute,
are wrought into endless details, to describe which would be a task equal
in magnitude to that of describing the stars of the heavens or the multitudinous beauties of the forest with its traceries of foliage presented by
oak and pine and poplar, by beech and linden and hawthorn, by tulip
and lily and rose, by fern and moss and lichen. Besides the elements of
form, there are elements of color, for here the colors of the heavens are
rivaled by the colors of the rocks. The rainbow is not more replete
with hues. But form and color do not exhaust all the divine qualities of
the Grand Canyon. It is the land of music. The river thunders in
perpetual roar, swelling in floods of music when the storm gods play
upon the rocks and fading away in soft and low murmurs when the
infinite blue of heaven is unveiled. With the melody of the great tide
rising and falling, swelling and vanishing forever, other melodies are
heard in the gorges of the lateral canyons, while the waters plunge in
the rapids among the rocks or leap in great cataracts. Thus the Grand
Canyon is a land of song. Mountains of music swell in the rivers,
hills of music billow in the creeks, and meadows of music murmur
in the rills that ripple over the rocks. Altogether it is a symphony of
multitudinous melodies. All this is the music of waters. The adamant
foundations of the earth have been wrought into a sublime harp, upon
which the clouds of the heavens play with mighty tempests or with
gentle showers.
The glories and the beauties of form, color, and sound unite in the
Grand Canyon—forms unrivaled even by the mountains, colors that vie
with sunsets, and sounds that span the diapason from tempest to tinkling
raindrop, from cataract to bubbling fountain. But more: it is a vast
district of country. Were it a valley plain it would make a state.
It can be seen only in parts from hour to hour and from day to day and
from week to week and from month to month. A year scarcely suffices
to see it all. It has infinite variety, and no part is ever duplicated. Its
colors, though many and complex at any instant, change with the ascending and declining sun; lights and shadows appear and vanish with
the passing clouds, and the changing seasons mark their passage in
changing colors. You cannot see the Grand Canyon in one view, as
if it were a changeless spectacle from which a curtain might be lifted,
but to see it you have to toil from month to month through its labyrinths. It is a region more difficult to traverse than the Alps or the
Himalayas, but if strength and courage are sufficient for the task, by
a year's toil a concept of sublimity can be obtained never again to be
equaled on the hither side of Paradise.
J.W. Powell
© 1895 John Wesley Powell