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Contents:
UPDATE OF THE SLV ARCHAEOLOGICAL NETWORK 2001 ACTIVITY SCHEDULE
Saturday
May 26: Trip to Site of Fort Massachusetts and the Fort Garland Petroglyphs.
Ron Kessler will lead this trip to historic Fort Massachusetts located
on the lower flanks of Mount Blanca near Fort Garland. Fort Massachusetts,
the first military post established within the present confines of Colorado,
was established in the San Luis Valley in 1852. The petroglyphs are also
located near Fort Garland. Please call Ron Kessler at 719-852-5225 for
more information about this trip.
Sunday,
Monday, and Tuesday July 1, 2, 3: Colorado Archaeological Society (CAS)
Encampment CAS members will camp at the Forest Service Mogote Campground
(Juniper Unit) on the Conejos River to the west of Antonito. SLV Archnet
members are invited to attend the associated field trips to the Dog Mountain
and Dry Creek Petroglyph sites near Monte Vista, the McIntire Ranch (home
of former Colorado governor Albert McIntire) near Sanford, and trips to
sites local to the campground. Please call Vince Spero at 719-852-6242
(work) or 873-5916 (home) for details. E-Mail vspero@peoplepc.com.
July 17
to 26 and August 7 to 16: Great Sand Dunes National Monument (GSDNM) Archaeological
Inventory and Site Testing. The GSDNM and Reserve will be conducting
archaeological investigations, including the test excavation of prehistoric
sites, during this time period. Volunteers from the SLV Archnet are encouraged
to sign up to help. Site visitors will also be welcome. Please call Vince
Spero at 719-852-6242 (work) or 873-5916 (home) for details. E-Mail address
is vspero@peoplepc.com
August
16, 17, and 18: Continuation of Test Excavations at the Torrez Trading
Post near La Garita. Last years testing revealed historic artifacts
dating mainly to the 1920s and 1930s. Continued excavation of the same
units to lower levels is expected to unearth artifacts from the older
occupation of the adobe ruin. Volunteers are needed and tours will be
done. Please call Vince Spero at 719-852-6242 (work) or 873-5916 (home)
for details. E-Mail address is vspero@peoplepc.com.
September
1, 2, and 3:Excavation of Late Paleoindian site. Pegi Jodry, Smithsonian
Institution Archaeologist, will conduct an excavation of a Late Paleoindian
site near the Sand Dunes National Monument. Several volunteers are needed
for this project over the Labor Day weekend. In addition a site visit
may be possible. Please call Vince Spero at 719-852-6242 (work) or 873-5916
(home) for details. E-Mail vspero@peoplepc.com
Saturday, September 29: Rock Art Recording Workshop. Lee Coats,
of San Luis, will conduct an all day workshop on the recording of rock
art sites. Lee, who has recorded many rock art sites in New Mexico and
other locations, is very interested in the further recordation of rock
art sites in the San Luis Valley. The workshop will be followed the next
week by a field session. Please look for more information in an upcoming
issue of the Archaeo-Update.
Saturday,
October 6: Rock Art Recording Field Session. The field portion of
the above Recording of Rock Art Sites Workshop will be held during this
session. Please look for details in an upcoming issue of the Archaeo-Update.
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SUMMARY
OF SOUTHERN SAN LUIS VALLEY PAST CLIMATE STUDY
A
BLM study of packrat middens from the Rio Grande Riparian Corridor, done
by Eric Feiler of the PaleoCultural Research Group in Flagstaff, Arizona,
presents information pertaining to paleoenvironmental conditions of the
southern SLV. Packrats have the habit of caching vegetative, animal, and
inorganic material from the immediate vicinity in their nests. This material,
sometimes encased and preserved by dehydrated urine called amberat, can
be Carbon-14 dated and analyzed thereby providing important information
about the past climate of a specific area. The contents of eleven such
packrat middens were studied providing information on climatic conditions
for the past 10,000 years. Information of this sort can be very important
in the analysis of area archaeological sites. The oldest nest studied
(9,830 years before present during the Early Holocene) indicates that
the climate was quite a bit cooler and moister than present. Several plants
at the site not present today included Colorado blue spruce, juniper,
birch, and bristlecone or limber pine. These species, which presently
grow at a higher altitude, reflect the wetter and cooler climate. A later
midden (3,820 years before present) indicates that there was a change
to conditions more similar to the present. Pinon pine and other more xeriphytic
species associated with the warmer and drier climate were found. Willow
and cottonwood were found in all middens tested indicating that these
plant communities have been eliminated at the site in the last several
hundred years. Sagebrush seems to have increased during this later time
period.
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