CALIFORNIA STATE UNIVERSITY, NORTHRIDGE Chacoan Roadways
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The Origin of Comb Ridge
THE ZEPHYR/ JUNE-JULY 2011 THE ORIGIN OF COMB RIDGE Robert Fillmore, Western State College of Colorado in Gunnison, CO (An excerpt and images from his new book: Geological Evolution of the Colorado Plateau) Comb Ridge is a lofty sinuous spine of red sandstone that stretch- ramp of Comb Ridge. Another notable result of this uplift is the es over 80 miles across northern Arizona and southeast Utah. This ensuing deep incision into the uplift by energized rivers as their monocline, as these structures are called, begins near Kayenta and runoff seeks a path to lower elevations. The deep narrow canyons snakes northward to fade away near the west flank of the Abajo of Cedar Mesa owe their existence to Monument Upwarp. Mountains. Monoclines are a peculiar component of the Colorado Plateau, with their long ridges of steeply tilted strata in a region otherwise known for its miles of flat-lying sedimentary rocks. They Monoclines are a peculiar component are hard to miss. Although not confined to the Colorado Plateau, of the Colorado Plateau, with their long ridges their concentration here is unique. Similar structures make up the of steeply tilted strata in a region San Rafael Swell, Capitol reef, and Colorado National monument otherwise known for its miles of near Grand Junction. All are closely related in origin and timing. flat-lying sedimentary rocks. They are hard to miss. The term monocline refers to a single-limbed fold; in simple geometric terms, a gargantuan ramp. The ramp of steeply tilted strata separates uplifted regions from those that have dropped The monoclines formed at the same time as the jagged Rocky downwards, relatively speaking. -
Ancient Maize from Chacoan Great Houses: Where Was It Grown?
Ancient maize from Chacoan great houses: Where was it grown? Larry Benson*†, Linda Cordell‡, Kirk Vincent*, Howard Taylor*, John Stein§, G. Lang Farmer¶, and Kiyoto Futaʈ *U.S. Geological Survey, Boulder, CO 80303; ‡University Museum and ¶Department of Geological Sciences, University of Colorado, Boulder, CO 80309; §Navajo Nation Historic Preservation Department, Chaco Protection Sites Program, P.O. Box 2469, Window Rock, AZ 86515; and ʈU.S. Geological Survey, MS 963, Denver Federal Center, Denver, CO 80225 Edited by Jeremy A. Sabloff, University of Pennsylvania Museum of Archaeology and Anthropology, Philadelphia, PA, and approved August 26, 2003 (received for review August 8, 2003) In this article, we compare chemical (87Sr͞86Sr and elemental) analyses of archaeological maize from dated contexts within Pueblo Bonito, Chaco Canyon, New Mexico, to potential agricul- tural sites on the periphery of the San Juan Basin. The oldest maize analyzed from Pueblo Bonito probably was grown in an area located 80 km to the west at the base of the Chuska Mountains. The youngest maize came from the San Juan or Animas river flood- plains 90 km to the north. This article demonstrates that maize, a dietary staple of southwestern Native Americans, was transported over considerable distances in pre-Columbian times, a finding fundamental to understanding the organization of pre-Columbian southwestern societies. In addition, this article provides support for the hypothesis that major construction events in Chaco Canyon were made possible because maize was brought in to support extra-local labor forces. etween the 9th and 12th centuries anno Domini (A.D.), BChaco Canyon, located near the middle of the high-desert San Juan Basin of north-central New Mexico (Fig. -
Interpretation and Visitor Experience at Chaco Culture National Historic Park Maren Else Svare
University of New Mexico UNM Digital Repository Anthropology ETDs Electronic Theses and Dissertations 7-1-2015 Speaking in Circles: Interpretation and Visitor Experience at Chaco Culture National Historic Park Maren Else Svare Follow this and additional works at: https://digitalrepository.unm.edu/anth_etds Part of the Anthropology Commons Recommended Citation Svare, Maren Else. "Speaking in Circles: Interpretation and Visitor Experience at Chaco Culture National Historic Park." (2015). https://digitalrepository.unm.edu/anth_etds/69 This Thesis is brought to you for free and open access by the Electronic Theses and Dissertations at UNM Digital Repository. It has been accepted for inclusion in Anthropology ETDs by an authorized administrator of UNM Digital Repository. For more information, please contact [email protected]. Maren Else Svare Candidate Anthropology Department This thesis is approved, and it is acceptable in quality and form for publication: Approved by the Thesis Committee: Dr. Ronda Brulotte, Chairperson Dr. Erin Debenport Dr. Loa Traxler i SPEAKING IN CIRCLES: INTERPRETATION AND VISITOR EXPERIENCE AT CHACO CULTURE NATIONAL HISTORIC PARK by MAREN ELSE SVARE BACHELOR OF ANTHROPOLOGY THESIS Submitted in Partial Fulfillment of the Requirements for the Degree of Master of Arts Anthropology The University of New Mexico Albuquerque, New Mexico May, 2015 ii Acknowledgments This thesis could have been completed without the wisdom, support, and diligence of my committee. Thank you to my committee chair, Dr. Ronda Brulotte, for consistently and patiently guiding me to rethink and rework. Dr. Erin Debenport supplied both good humor and good advice, keeping my expectations realistic and my writing on track. I am grateful to Dr. -
Climate Change and Cultural Response in the Prehistoric American Southwest
University of Nebraska - Lincoln DigitalCommons@University of Nebraska - Lincoln USGS Staff -- Published Research US Geological Survey Fall 2009 Climate Change and Cultural Response In The Prehistoric American Southwest Larry Benson U.S. Geological Survey, [email protected] Michael S. Berry Bureau of Reclamation Follow this and additional works at: https://digitalcommons.unl.edu/usgsstaffpub Benson, Larry and Berry, Michael S., "Climate Change and Cultural Response In The Prehistoric American Southwest" (2009). USGS Staff -- Published Research. 725. https://digitalcommons.unl.edu/usgsstaffpub/725 This Article is brought to you for free and open access by the US Geological Survey at DigitalCommons@University of Nebraska - Lincoln. It has been accepted for inclusion in USGS Staff -- Published Research by an authorized administrator of DigitalCommons@University of Nebraska - Lincoln. CLIMATE CHANGE AND CULTURAL RESPONSE IN THE PREHISTORIC AMERICAN SOUTHWEST Larry V. Benson and Michael S. Berry ABSTRACT Comparison of regional tree-ring cutting-date distributions from the southern Col- orado Plateau and the Rio Grande region with tree-ring-based reconstructions of the Palmer Drought Severity Index (PDSI) and with the timing of archaeological stage transitions indicates that Southwestern Native American cultures were peri- odically impacted by major climatic oscillations between A.D. 860 and 1600. Site- specifi c information indicates that aggregation, abandonment, and out-migration from many archaeological regions occurred during several widespread mega- droughts, including the well-documented middle-twelfth- and late-thirteenth- century droughts. We suggest that the demographic response of southwestern Native Americans to climate variability primarily refl ects their dependence on an inordinately maize-based subsistence regimen within a region in which agricul- ture was highly sensitive to climate change. -
Chaco Culture
National Park Service U.S. Department of the Interior Chaco Culture Chaco Culture N.H.P. Chaco Canyon Place Names In 1849, Lieutenant James Simpson, a member of the Washington Expedition, surveyed many areas throughout the Southwest. He described and reported on many ancestral Puebloan and Navajo archaeological sites now associated with Chaco Culture NHP. Simpson used the names given to him by Carravahal, a local guide, for many of the sites. These are the names that we use today. However, the Pueblo Peoples of NM, the Hopi of AZ, and the Navajo, have their own names for many of these places. Some of these names have been omitted due to their sacred and non-public nature. Many of the names listed here are Navajo since the Navajo have lived in the canyon most recently and continue to live in the area. These names often reveal how the Chacoan sites have been incorporated into the culture, history, and oral histories of the Navajo people. There are also different names for the people who lived here 1,000 years ago. The people who lived in Chaco were probably diverse groups of people. “Anasazi” is a Navajo word which translates to “ancient ones” or “ancient enemies.” Today, we refer to this group as the “Ancestral Puebloans” because many of the descendents of Chaco are the Puebloan people. However there are many groups that speak their own languages and have their own names for the ancient people here. “Ancestral Puebloans” is a general term that accounts for this. Chaco-A map drawn in 1776 by Spanish cartographer, Bernardo de Pacheco identifies this area as “Chaca” which is a Spanish colonial word commonly used to mean “a large expanse of open and unexplored land, desert, plain, or prairie.” The term “Chaca” is believed to be the origin of both the word Chacra in reference to Chacra Mesa and Chaco. -
1 August 26, 2019 Sent Via E-Planning and Overnight Mail
August 26, 2019 Sent via e-Planning and overnight mail Director (210) Attention Protest Coordinator, WO-210 P.O. Box 71383 Washington D.C. 20024-1383 Re: Protest of the Bears Ears National Monument Indian Creek and Shash Jáa Units Proposed Monument Management Plans and Final Environmental Impact Statement Please accept this protest of the Bureau of Land Management’s Bears Ears National Monument (BENM) Indian Creek and Shash Jáa Units Proposed Monument Management Plans and Final Environmental Impact Statement (MMP/FEIS), submitted by the Access Fund, Archaeology Southwest, Conservation Lands Foundation, Friends of Cedar Mesa, National Trust for Historic Preservation, Society for Vertebrate Paleontology and Utah Diné Bikéyah (Protesting Parties or Protestors). The Protesting Parties incorporate by reference the points and arguments raised in the protests filed by the Wilderness Society (and their partners), as well as by any tribes or tribally affiliated organizations. INTERESTS AND INVOLVEMENT OF THE PARTIES The Access Fund is a national advocacy organization whose mission keeps climbing areas open and conserves the climbing environment. A 501(c)(3) non-profit supporting and representing over 7 million climbers nationwide in all forms of climbing—rock climbing, ice climbing, mountaineering, and bouldering—the Access Fund is the largest US climbing organization with nearly 20,000 members and 120 affiliates. We currently hold memorandums of understanding1 with the Bureau of Land Management, National Park Service, and Forest Service to work together regarding how climbing is managed on federal land. The Access Fund provides climbing management expertise, stewardship, project specific funding, and educational outreach for climbing areas across the country including the BENM region, and Utah is one of our largest member states. -
Utah Geology: Making Utah's Geology More Accessible. View South-East
5/28/13 Utah Geology: Geologic Road Guides Utah Geology: Making Utah's geology more accessible. View south-east over St. George, Utah Road Guide Quick Select. Selection Map HW-160, 163 & 191 Tuba City to Kayenta, Bluff & Montecello, Utah (through Monument Valley) 0.0 Junction of U.S. Highways 160 and 89 , HW-160 Road Guide. follows U.S. Highway 160 east toward Tuba city and Kayenta. U.S. Highway 89 leads south toward the entrance to Grand Canyon National Park and Flagstaff. For a route description along U.S. Highway 89 northward from here see HW-89A Road Guide.. The road junction is in the Petrified Forest Member of the Chinle Formation. The member is composed of interbedded stream channel sandstone and varicolored shale and mudstone. This member erodes moderately easily and forms the strike valley to the north and south. From here the route of this guide leads upsection into younger and younger beds of the Chinle Formation. 0.7 Cross Hamblin Wash and rise from the Petrified Forest Member into the pinkish banded Owl Rock Member of the Chinle Formation. The upper member forms pronounced laminated pinkish gray and green badlands, distinctly unlike the rounded Painted Desert-type massive badlands of the underlying member. 1.6 Road rises up through the upper part of the Chinle Formation, a typical wavy to hummocky road. Highway construction is easy across the slope-forming parts of the formation, but holding the road after construction is difficult because the soft volcanic ash-bearing shales heave under load or after wetting and drying. -
The First Occurrence of the Enigmatic Archosauriform Crosbysaurus Heckert 2004 from the Chinle Formation of Southern Utah Robert J
The first occurrence of the enigmatic archosauriform Crosbysaurus Heckert 2004 from the Chinle Formation of southern Utah Robert J. Gay and Isabella St. Aude Science Department, Mission Heights Preparatory High School, Casa Grande, AZ, USA ABSTRACT Originally identified as an ornithischian dinosaur, Crosbysaurus harrisae has been found in New Mexico, Arizona, and its type locality in Texas, as well as in North Carolina. The genus has been reassessed by other workers in light of reinterpretations about the postcrania of another putative Triassic ornithischian, Revueltosaurus. The understanding of Triassic dental faunas has become more complicated by the extreme convergence between pseudosuchian archosaurs and ornithischian dinosaur dental morphologies. We report here on a new specimen of Crosbysaurus (MNA V10666) from the Chinle Formation at Comb Ridge in southeastern Utah. This new specimen is assigned to Crosbysaurus sp. on the basis of the unique compound posterior denticles, labiolingual width, and curvature. While MNA V10666 does not help resolve the aYnities of Crosbysaurus, it does represent the extension of the geographic range of this taxon for approximately 250 kilometers. This is the first record of the genus Crosbysaurus in Utah and as such it represents the northernmost known record of this taxon. This indicates that Crosbysaurus was not limited to the southern area of the Chinle/Dockum deposition but instead was widespread across the Late Triassic paleoriver systems of western Pangea. The reported specimen was found in close association with a typical Late Triassic Chinle fauna, including phytosaurs, metoposaurs, and dinosauromorphs. Submitted 13 November 2014 Accepted 31 March 2015 Subjects Paleontology Published 21 April 2015 Keywords Crosbysaurus, Chinle Formation, Chinle, Utah, Comb Ridge, New occurance, Corresponding author New record, Triassic, Late Triassic, Archosaur Robert J. -
A New Basal Sauropodomorph Dinosaur from the Lower Jurassic Navajo Sandstone of Southern Utah
A New Basal Sauropodomorph Dinosaur from the Lower Jurassic Navajo Sandstone of Southern Utah Joseph J. W. Sertich1*, Mark A. Loewen2 1 Department of Anatomical Sciences, Stony Brook University, Stony Brook, New York, United States of America, 2 Utah Museum of Natural History, Salt Lake City, Utah, United States of America Abstract Background: Basal sauropodomorphs, or ‘prosauropods,’ are a globally widespread paraphyletic assemblage of terrestrial herbivorous dinosaurs from the Late Triassic and Early Jurassic. In contrast to several other landmasses, the North American record of sauropodomorphs during this time interval remains sparse, limited to Early Jurassic occurrences of a single well- known taxon from eastern North America and several fragmentary specimens from western North America. Methodology/Principal Findings: On the basis of a partial skeleton, we describe here a new basal sauropodomorph dinosaur from the Lower Jurassic Navajo Sandstone of southern Utah, Seitaad ruessi gen. et sp. nov. The partially articulated skeleton of Seitaad was likely buried post-mortem in the base of a collapsed dune foreset. The new taxon is characterized by a plate-like medial process of the scapula, a prominent proximal expansion of the deltopectoral crest of the humerus, a strongly inclined distal articular surface of the radius, and a proximally and laterally hypertrophied proximal metacarpal I. Conclusions/Significance: Phylogenetic analysis recovers Seitaad as a derived basal sauropodomorph closely related to plateosaurid or massospondylid ‘prosauropods’ and its presence in western North America is not unexpected for a member of this highly cosmopolitan clade. This occurrence represents one of the most complete vertebrate body fossil specimens yet recovered from the Navajo Sandstone and one of the few basal sauropodomorph taxa currently known from North America. -
THE Mckern “TAXONOMIC” SYSTEM and ARCHAEOLOGICAL CULTURE CLASSIFICATION in the MIDWESTERN UNITED STATES: a HISTORY and EVALUATION
Published in Bulletin of the History of Archaeology, Vol. 6, No. 1, pp. 3-9 (1996). Excepting some very minor revisions and McKern's quote describing the structure and detail of his classification this was the paper read at the IInd Indianapolis Archaeological Conference, Sheraton Meridian Hotel, November 15, 1986, organized by Neal L. Trubowitz. Since the reader of this article does not have the contributions of the other participants that describe the system it was thought advisable that it be included. The proceedings of this event were to be published as a commemorative volume of the first conference, but this never occurred. THE McKERN “TAXONOMIC” SYSTEM AND ARCHAEOLOGICAL CULTURE CLASSIFICATION IN THE MIDWESTERN UNITED STATES: A HISTORY AND EVALUATION By B. K. Swartz, Jr. from Selected Writings ABSTRACT In the first half of the 20th century three major archaeological culture unit classifications were formulated in the United States. The most curious one was the Midwestern "Taxonomic" System, a scheme that ignored time and space. Alton K. Fisher suggested to W. C. McKern in the late 1920's that the Linnean model of morphological classification, which was employed in biology at a time of pre-evolutionary thinking, might be adapted to archaeological culture classification (Fisher 1986). On the basis of this idea McKern conceived the Midwestern Taxonomic System and planned to present his concept in a paper at the Central Section of the American Anthropological Association at Ann Arbor, Michigan, in April 1932. Illness prevented him from making the presentation. The first public statement was before a small group of archaeologists at the time of an archaeological symposium, Illinois Academy of Science, May 1932 (Griffin 1943:327). -
Raplee Ridge Monocline and Thrust Fault Imaged Using Inverse Boundary Element Modeling and ALSM Data
Journal of Structural Geology 32 (2010) 45–58 Contents lists available at ScienceDirect Journal of Structural Geology journal homepage: www.elsevier.com/locate/jsg Structural geometry of Raplee Ridge monocline and thrust fault imaged using inverse Boundary Element Modeling and ALSM data G.E. Hilley*, I. Mynatt, D.D. Pollard Department of Geological and Environmental Sciences, Stanford University, Stanford, CA 94305-2115, USA article info abstract Article history: We model the Raplee Ridge monocline in southwest Utah, where Airborne Laser Swath Mapping (ALSM) Received 16 September 2008 topographic data define the geometry of exposed marker layers within this fold. The spatial extent of five Received in revised form surfaces were mapped using the ALSM data, elevations were extracted from the topography, and points 30 April 2009 on these surfaces were used to infer the underlying fault geometry and remote strain conditions. First, Accepted 29 June 2009 we compare elevations extracted from the ALSM data to the publicly available National Elevation Dataset Available online 8 July 2009 10-m DEM (Digital Elevation Model; NED-10) and 30-m DEM (NED-30). While the spatial resolution of the NED datasets was too coarse to locate the surfaces accurately, the elevations extracted at points Keywords: w Monocline spaced 50 m apart from each mapped surface yield similar values to the ALSM data. Next, we used Boundary element model a Boundary Element Model (BEM) to infer the geometry of the underlying fault and the remote strain Airborne laser swath mapping tensor that is most consistent with the deformation recorded by strata exposed within the fold. -
The Archaeology of Chaco Canyon
The Archaeology of Chaco Canyon Chaco Matters An Introduction Stephen H. Lekson Chaco Canyon, in northwestern New Mexico, was a great Pueblo center of the eleventh and twelfth centuries A.D. (figures 1.1 and 1.2; refer to plate 2). Its ruins represent a decisive time and place in the his- tory of “Anasazi,” or Ancestral Pueblo peoples. Events at Chaco trans- formed the Pueblo world, with philosophical and practical implications for Pueblo descendents and for the rest of us. Modern views of Chaco vary: “a beautiful, serene place where everything was provided by the spirit helpers” (S. Ortiz 1994:72), “a dazzling show of wealth and power in a treeless desert” (Fernandez-Armesto 2001:61), “a self-inflicted eco- logical disaster” (Diamond 1992:332). Chaco, today, is a national park. Despite difficult access (20 miles of dirt roads), more than seventy-five thousand people visit every year. Chaco is featured in compendiums of must-see sights, from AAA tour books, to archaeology field guides such as America’s Ancient Treasures (Folsom and Folsom 1993), to the Encyclopedia of Mysterious Places (Ingpen and Wilkinson 1990). In and beyond the Southwest, Chaco’s fame manifests in more substantial, material ways. In Albuquerque, New Mexico, the structure of the Pueblo Indian Cultural COPYRIGHTED MATERIAL 3 Stephen H. Lekson Figure 1.1 The Chaco region. Center mimics precisely Pueblo Bonito, the most famous Chaco ruin. They sell Chaco (trademark!) sandals in Paonia, Colorado, and brew Chaco Canyon Ale (also trademark!) in Lincoln, Nebraska. The beer bottle features the Sun Dagger solstice marker, with three beams of light striking a spiral petroglyph, presumably indicating that it is five o’clock somewhere.