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Filters: Collection Name: "James H. Madsen" Format: "image/jpeg" Collection: "uum_map" Format: image
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1 On this Land-Sat photo of the State of Utah, heavily vegetated areas are red, unvegetated areas are light colored, and bodies of water are dark blue. Notice three prominent landforms: Great Salt Lake, the east-west aligned Uinta Mountains in the northeast corner of the state, and the San Rafael Swell in the eastcentral area. (May 1984)P1048 James H. Madsen Photograph CollectionP1048n001
2 A geologic map of Utah, illustrates the strata conventionally colored differently according to geological age. Notice the San Rafael Swell, the dominant geologic and geographic feature in the eastcentral part of the State. The Cleveland-Lloyd Dinosaur Quarry (C-LDQ) is located on the northern end or nose of the Swell.P1048 James H. Madsen Photograph CollectionP1048n002
3 This view of the Cleveland-Lloyd Dinosaur Quarry (C-LDQ) in Emery County, Utah is typical of the primitive landscape and isolated areas, where many of Utah's dinosaurs are found and collected.P1048 James H. Madsen Photograph CollectionP1048n003
4 These colorful, Morrison Formation exposures are similar to the rock outcrops where dinosaur bones are found in many localities across the Colorado Plateau of Utah, New Mexico, and Colorado.P1048 James H. Madsen Photograph CollectionP1048n004
5 The C-LDQ Visitor Center was constructed in 1967 by the Castle Valley Job Corps in collaboration with the Price River Resource Area of the Bureau of Land Management, and the College of Eastern Utah, Prehistoric Museum in Price City.P1048 James H. Madsen Photograph CollectionP1048n005
6 The Visitor Center at the C-LDQ, which became a United States Natural Landmark in 1968, has some interesting graphics that interpret and detail the operation and history of the Quarry. Included in the exhibits are some prepared, original dinosaur bones, and a mounted free- standing skeleton of a medium-sized Allosaur, which consists of less than 50% of the original, fossil bones. The skull of the Allosaur can be seen through the window in the front of the building.P1048 James H. Madsen Photograph CollectionP1048n006
7 Interior of the C-LDQ Visitor's Center showing a dinosaur skeleton.P1048 James H. Madsen Photograph CollectionP1048n006a
8 This is a view of the main interpretive exhibit, an Allosaurus, inside the Visitor Center at the Cleveland-Lloyd Dinosaur Quarry. The Center is open on a limited basis during the summer months and not at all for the rest of the year. The Quarry, Visitor Center, and picnic areas are supervised and maintained by the United States, Department of the Interior, Bureau of Land Management with the support and excavation at various times of the College of Eastern Utah, Prehistoric Museum, the Earth Science Museum at Brigham Young University, and the Utah Museum of Natural History.P1048 James H. Madsen Photograph CollectionP1048n007
9 This oil painting by Utah artist, Gale Hammond, is his interpretation of dinosaur life at the Cleveland-Lloyd Quarry 147.5 million years ago. A large Allosaur looks on, while a second predator attacks a Camptosaur. Notice the vegetation and a ponderous sauropod dinosaur wading the shallow lake in the background. Few dinosaur Paleontologists now agree that sauropods spent much time swimming or wading, thereby risking getting mired in the mud of or adjacent to shallow bodies of water.P1048 James H. Madsen Photograph CollectionP1048n008
10 Dinosaur hunters often enjoy a camping experience, while prospecting for and collecting dinosaur bones, as seen here at the Cleveland-Lloyd Dinosaur Quarry. The Quarry was active and open full-time during the summers of 1960 through 1964. It has been worked sporadically during the past four decades; however, prior to that the first scientific collecting of record was done in 1927. The most intensive collecting was done during the summers of 1939-41 and 1960-64. (May 1960)P1048 James H. Madsen Photograph CollectionP1048n009
11 Painting interpretation of dinosaur life.P1048 James H. Madsen Photograph CollectionP1048n009a
12 A large house trailer, seriously damaged traveling the rough road to the C-LDQ, was the solution to the housing problem the second year (1961) of the University of Utah Cooperative Dinosaur Project (UUCDP). (June 1961)P1048 James H. Madsen Photograph CollectionP1048n010
13 The last attempt at housing the C-LDQ field crew was a 16 foot square shack that boasted a gas stove and refrigerator, a table, four chairs, and two folding cots. (June 1962)P1048 James H. Madsen Photograph CollectionP1048n011
14 In the early years, young visitors to the C-LDQ were allowed to dig in the spoil piles next to the excavation. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n012
15 If the young prospectors were lucky and raised their hands when asked about their success, we would have them "donate" their significant finds to the collection. They were allowed to keep fragments of no scientific value. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n013
16 A good lesson to learn early on, when digging dinosaurs, is that even in a desert there is occasional rain; and when it rains, it is advisable to have a drain in the lowest part of the quarry excavation lest it turn into a wading pool, as seen here.P1048 James H. Madsen Photograph CollectionP1048n014
17 The steel buildings, assembled over the unexcavated Quarry surface in 1979, were an important addition; because they afforded protection from both vandalism and the weather. They were long overdue improvements making it no longer necessary to re-excavate the quarry at the beginning of the field season and then cover it again at the conclusion of work in the late summer.P1048 James H. Madsen Photograph CollectionP1048n015
18 Prior to excavation the Quarry surface was carefully divided into a one yard grid system. Note the stakes and flags, which facilitated the precise mapping of each bone before its removal and transport to the laboratory at the University of Utah for preparation, curation, and eventual study.P1048 James H. Madsen Photograph CollectionP1048n016
19 For nearly 20 years following the initial Quarry opening by the University of Utah Cooperative Dinosaur Project in 1960, it was necessary to open and close the Quarry with heavy equipment each field season to protect it from vandalism and illegal collecting. (October 1961)P1048 James H. Madsen Photograph CollectionP1048n017
20 The fossiliferous unit at the C-LDQ, which consists of poorly stratified to blocky, bentonitic shales, is overlain by a dense, hard, siliceous, freshwater limestone. The surface between the two units shows evidence of channeling as seen here. (June 1961)P1048 James H. Madsen Photograph CollectionP1048n018
21 Some fossil bones from the C-LDQ, such as this left premaxilla of Allosaurus, require minimal or no special preparation in the laboratory, but such is the exception rather than the rule.P1048 James H. Madsen Photograph CollectionP1048n019
22 In numerical order, each fossil is cataloged, measured, identified, and carefully plotted on a base map before it is removed from the Quarry surface. This is just one part of the precise record keeping at the Quarry and compilation of the important data on the thousands of individual fossils exposed and collected there. (July 1961)P1048 James H. Madsen Photograph CollectionP1048n020
23 This section of the composite Cleveland-Lloyd Quarry map illustrates the jumbled condition of bones, as they were at the time of burial. They appear as though the disarticulated parts of nearly six dozen dinosaurs had been stirred into a huge pot of mud and left to be found, unscrambled, and described by vertebrate paleontologists 147 million years later. Accurate maps and carefully written records are an essential part of dinosaur collecting and subsequent scientific research.P1048 James H. Madsen Photograph CollectionP1048n021
24 These are fossil bones as discovered and uncovered in place at the Quarry. To one side are some of the tools used by the paleontologists who collect the fossils.P1048 James H. Madsen Photograph CollectionP1048n022a
25 Tools and supplies commonly used here are: ice-pick, brush,screwdriver, bayonet, broom, trowel, knee pads, scoop, glue, sample bags, insect spray, boxes, and tissue paper. Minimal preparation is done to facilitate collection in the field, but the careful, finish preparation on each bone is done only after the fossils have been carefully transported to the laboratory.P1048 James H. Madsen Photograph CollectionP1048n022b
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