The Keck Consortium is a group of
undergraduate geology majors: eight from
colleges and universities across the U.S.
and eight from the University of Science
and Technology in Ulaanbaatar, Mongolia,
who have joined together to study the geology
of the Tavan Har area of the east Gobi,
southern Mongolia.
The Consortium's overall goal is to
better understand the geologic history,
including the Quaternary, of this remote
and little studied portion of southeastern
Mongolia. The general goals for the Mongolia
project are:
- To better understand the rocks of
the area, the environments in which they
formed, and the nature of the contacts
between various units.
- To collect and study fossils in
an attempt to refine the ages of the rocks.
- To understand the tectonics of
the area: the nature of faulting, the
ages of faults.
- To study Quaternary desert geomorphic
processes.
They used equipment from Ben Meadows,
including compasses, field cases, notebooks,
rock hammers, hand lenses and field vests.
Below is a description of life in Mongolia
during the study by Bob Carson, one of the
faculty advisors to the Consortium: |
I’ve been awake since the sky was full
of stars; dogs near Ulangom in Western Mongolia
barked all night (after sleeping all day). There’s
a pink and orange sky to the Northeast over Uvs
Nuur, Mongolia’s largest lake, by area.
Venus and a half moon still shine brightly. The
horses around me munch quietly on the overgrazed
grasses. To the south are two jeeps with trailers,
two four-wheel-drive Toyotas, a big truck and
28 others in sleeping bags. Only the stack of
the coal-fired power plant rises prominently above
the low skyline of Ulangom, the Aimag capitol,
to the northwest. Low hills are silhouetted to
the east; the snow-capped Turgen Range rises to
almost 4000m on the western skyline. Our campsite
is just below 1000m which is 200m above Uvs Nuur.
Dawn brings the sound of a crier in a minaret
at a mosque in Ulangom. Perhaps it is a recording
blasted over loudspeakers. The sound mixes with
the canine barks and occasional vehicles of early
morning. Kazakhstan is not far west; many Kazaks
with their Islam religion inhabit far western
Mongolia. The Russia-Mongolian border crosses
the northeast corner of Uvs Nuur, but the lake
is so big one cannot see across it. Nearby Tuva
is close to the point on Earth farthest from any
ocean, yet gulls and terns are among the great
variety of birdlife along the shores of Uvs Nuur.
This day unfolds as many have this past month
in wonderful western Mongolia. Our “base
camp” lay at an elevation of 2225m on the
east side of the Kharkhiraa Mountains in the northeastern
Mongolian Altai. These foothills are cut by major
north-south faults separating the Uvs Nuur (lake)
basin to the east from the Turgen/Kharkhiraa Range
to the west. Camp is almost on one of the two
largest faults, which runs many kilometers north
and south. Just to the east is a placer gold mine
which operates 24 hours a day for the six months
of “summer”. We got a tour by the
(female) chief geologist and saw frozen ground
(permafrost) in the mine floor. A few kilometers
to the west is a coal mine. This mine operates
during winter months, when Mongolians need coal
for heat and electricity (there are few or not
other sources of energy in Mongolia). We have
not seen trees for weeks: everywhere is grass,
except rock outcrops and where overgrazing has
caused slope instability. Many slopes have terracettes,
most apparently directly or indirectly caused
by overgrazing.
We see cattle, yaks, horses, sheep and goats
all over the place, with camel herds here and
there. Regularly there are goats and sheep grazing
by camp. One morning I woke Clare early because
I thought she was grating her teeth; she thought
it was someone walking by our tent, but it lasted
too long. We opened the fly to see a grazing yak
a few meters away.
Wildflowers accompany the grasses—fewer
(like edelweiss) at this elevation and more in
meadows 500m above us. Above this are some of
the most beautiful mountains I’ve ever seen.
Occasionally we drive (for research purposes)
to the pass between the Turgen Mountains to the
north and the Kharkhiraa Mountains to the south.
Each massif has giant glacial troughs radiating
in all directions. At the heads of these troughs
are large glaciers, particularly on northern slopes.
The snouts of the glaciers are buried in rock
debris—down each valley goes a small river
carrying outwash. Some glaciers are on the summits
of flat-topped mountains; down the sides are ice
fields and hanging glaciers.
Scattered throughout the countryside are white
gers, one to a few per Mongolian family or extended
family. Transportation is by horse, or motorcycle.
There are a few big trucks to haul wool after
shearing, or move the family (and its ger) to
lower elevations for winter. The people are very
friendly, inviting us in to their gers for yak
cheese, airag (fermented mare’s milk), salty
tea or whatever. We often have something to give:
a pen, a balloon, chewing gum or candy. They are
curious as to what we are doing, and to the nature
of our instruments.
Our party includes nine Americans, one Swiss,
and nine Mongolian students; two Mongolian drivers
with Russian jeeps; two Mongolian cooks; two US
Geology professors (Rick and me), Clare, one US
doctor and his wife, one assistant from California,
plus one Mongolian and one British professors.
There are two Toyota “land-cruisers";
Bayasaa told another driver not to come with his
Russian four-wheel-drive van until it was fixed.
We are working on the following American research
projects: three along the fault (when was the
last earthquake?), two on local rocks, one on
nearby landslides (which are varied and spectacular)
and three at high elevation (one on patterned
ground, another on aufeis, and a third on moraines).
Mongolian students are assisting with most of
these research projects.
The weather is tough; we’ve only had one
or two days without rain. We've experienced lots
of rain with occasional hail, high winds, thunder
and lightning. One day it hailed so much that
there was the appearance of snow on the ground.
The lightning is likely dangerous only when we’re
on ridges; once Clare and I had less than one
second between the flash and the bang. Temperatures
have been as low as 40° F, which yields freezing
considering wind chill. A 60°F temperature
feels great when the sun is out. Field work is
hard in low temperatures and/or rain. Especially
if one is not moving much. During rare cloudless
hours, the icy mountains are spectacular.
Two research projects are a little risky because
the field areas are over a ridge and down in a
deep valley from as close as vehicles can get.
We always have at least two people in each research
site; those in the high valley have CB radios
to maintain contact. Each day groups walk to nearby
projects or go by vehicle to remote sites, as
far as an hour away. The only real road leads
east to the Uvs Nuur basin and west to a village
and the coal mine. There are “tracks”
all over the place; vehicles follow the tracks
or just go “cross-country”. There
are no bridges, even on the road. The van had
lots of traction problems; a Toyota got really
stuck once, but digging, putting rocks in the
ruts, pulling with the other Toyota, and pushing
with people got it out of the muck. The jeeps
are best, especially because of their high clearance.
Three types of patterned ground are common. The
mounds of soil, vegetation and rocks merely yield
a bumpy ride. The vegetated frost mounds (“hippie
heads”) result in a very bumpy ride, or
if soft, a stuck vehicle. The stone-ringed mounds
with boulder edges are about impossible to cross.
Around the camp are steep grassy slopes, including
Sacred Mountain north across the valley. Many
of us climbed this mountain, which rises about
500 m above the river where we get our water.
The river flows past the town upstream of us,
plus there are livestock everywhere, so we have
to purify our water. Sacred Mountain's top is
often in the clouds; there is an ovoo and a stone
alter on the summit.
Meals are good, but similar, every day. Breakfast
is tea (and instant coffee); juice every other
day, cream of wheat, cornflakes, granola, bread
and spreads. Lunch (in the field) is tea, bread,
sardines, cheese and perhaps meat and/or an apple.
Dinner is tea, meat and vegetable soup, pasta
with meat and vegetables (or sometimes meat with
rice or potatoes) and canned fruit every other
evening.
We have two gers: one is in the kitchen, the
other is for everything else, dining, research,
talking, games, reading, etc. The “other”
ger leaks like a sieve during rainstorms, but
beats being pelted by raindrops and hailstones.
The storms come from the west; afterwards there
are spectacular lightning displays to the east.
My favorite place is the high valley where the
glacial and aufeis projects are located. I was
fortunate to be able to visit this most beautiful
site half a dozen times, with bad weather only
the day Clare joined me. The students have named
it “No Goat Valley” because no sheep
or goats go there, so there is no overgrazing.
The valley floor is lush with grasses and wildflowers,
plus a tiny bush with green leaves and red flowers.
Dozens of tiny streams and a big spring feed the
braided river that has carved two canyons through
phyllite. Some of the lichen-covered granite boulders
are striated. At the head of the valley is a compound
cirque with many glaciers descending from snowy
rocky peaks. Light and dark clouds dance across
the bright blue sky. The only sounds are the wind,
the river crashing over rocks, and occasionally,
an icefall from a hanging glacier. The only evidence
of visitors is a little horse and yak dung and
scattered cairns. Moraines wind across the valley
floor and sides, and a large patch of aufeis lies
above the upper canyon. I have never been anywhere
more beautiful or remote.
John W. had climbed a nearby peak a few days
ago. We somewhat hurriedly left base camp at 2225
m at 9 a.m., six of us crammed into a Russian
jeep, enduring an hour of rocks and ruts, hill
and stream crossings. The jeep was “parked”
on the northeast side of a valley with a small
stream and lots of patterned ground, with gers,
Mongolians, sheep, goats and camels down valley
above a canyon. We walked southwest across the
broad valley, hopping on rocks, walking on grass
and wild flowers, jumping over tiny weeks and
beginning the ascent at about 2850m.
The northeast side of Cirque Mountain (as Clare
names this peak), is a huge pile of bedrock and
frost-shattered boulders undergoing landslides
and solifluction. Patches of grass near the base
become few and far between—there are stable
stepping places. They are replaced by smaller
patches of moss on thin soil as one ascends; but
the upper 500 m of these mountains in the Kharkhiraa
Range has only lichens for plants. The only animals
we saw were occasional spiders and raven-like
birds.
I ascended the way Clare did a few days ago when
she reached perhaps 3200 m. It surprised me that
I could more or less keep pace with Nick from
Carleton College, Martin from Whitman College,
Laura from Princeton University and Moyo from
Mongolian University of Science and Technology.
Franco from Switzerland was way ahead of us much
of the day even though he made side trips for
photography. The ascent involves finding rocks
that won’t move on a giant unconsolidated
staircase; small rocks that slip down under a
boot cost energy that shouldn’t be wasted.
To the southeast is a large cirque with a shrinking
beheaded glacier that is the main source of the
stream in the valley below. Most of last winter’s
snow is gone, the surface replaced with dust from
spring storms. Higher up the ridge we go, eventually
seeing the huge glacial trough to our northwest.
The head of this deep valley is full of glaciers
and moraines: hanging glaciers, cirque glaciers,
valley glaciers with lateral and medial moraines.
Just down valley from this beautiful ice is a
gigantic ice-cored terminal moraine that behaves
like a rock glacier. The melt water from the glacier
complex disappears under the “rock glacier”
and reappears near its snout, flowing down valley
under aufeis, between many lateral moraines, and
through two canyons before reaching the Kharkhiraa
River to our north.
The summit of Cirque Mountain is a nearly flat
block field about the size of Whitman’s
Ankeny Field. To the south is a giant glacier
wasting away, but still feeding ice to the southeast
glacier in the valley where Nick and Martin are
doing their research. We gawked at and photographed
the glacier-mountain complex in and above the
valley almost a kilometer below us, then decided
about where the high point of our small rocky
plateau lay. There we built a cairn or ovoo of
granitic boulders and at our lunch of mostly bread.
It was warm and almost windless; dark clouds
were in all directions, but lightning never came.
Mostly the sun shone on the rocks and glaciers.
After an hour on the summit, we spent over five
hours descending, by a different route. First
we went south to the huge snow filed-glacier,
and walked southeast near its margin, looking
at the meltwater on and at the edge of the ice.
Next we crossed the rock and snow between this
glacier and the beheaded glacier in the cirque
we planned to circumnavigate. Bayasaa and five
other Mongolians had driven up to the high valley
shortly after us; they had climbed to the snout
of the beheaded glacier for lunch.
Our next stop was the top of a huge northeast-facing
empty cirque. By empty I mean no more glacier,
only small moraines from the Little Ice Age. Then
we slowly descended the ridge between the two
cirques—slowly because of the very long
slope of unstable rocks. Such descents are very
tough on knees—particularly old knees. We
crossed mafic dikes cutting the pink “granite”,
and many mass-wasting features. It was quite a
relief to get off this steep loose rock.
The stream issuing from the beheaded glacier
cascades over boulder hundreds of meters down
from the ice to the valley floor where we started.
On either side of this torrent are grass patches
and lines of frost moved stones. We took off our
boots, washed our feet in the near-freezing water,
and lay in the grass, waiting for Bayasaa and
company to return from the cirque with the beheaded
glacier. Then we all crossed the valley floor
to the four-wheel-drive vehicles. Many nomadic
Mongolians left the high valley that day, with
gers and other belongings on a truck and a camel
caravan. They drove their sheep and goats to lower
pastures; winter comes early in Mongolia. The
only traces of their summer home were two skulls—
one camel and one human.
The program's Web site is:
http://keck.carleton.edu/program/mongolia.html
You can find out more about the Keck Consortium
by visiting:
http://keck.carleton.edu
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