Se connecter

Bibliographies thématiques / San Rafael Swell (Utah) / Articles de revues

Pour voir les autres types de publications sur ce sujet consultez le lien suivant : San Rafael Swell (Utah).

Articles de revues sur le sujet « San Rafael Swell (Utah) »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 1 février 2022

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les 38 meilleurs articles de revues pour votre recherche sur le sujet « San Rafael Swell (Utah) ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Parcourez les articles de revues sur diverses disciplines et organisez correctement votre bibliographie.

1

Chidsey, Thomas, et Paul Anderson. « Ancient delta deposits in the Ivie Creek area, Ferron Sandstone member of the Mancos Shale, western San Rafael Swell, east-central Utah ». Geosites 1 (1 décembre 2019) : 1–18. http://dx.doi.org/10.31711/geosites.v1i1.74.

Texte intégral

Résumé :

In contrast to the beautiful array of colorful layers and spectacular cliffs of the Triassic and Jurassic (251 to 148 million years ago [Ma]) sections in the San Rafael Swell of east-central Utah, most of the Upper Cretaceous (96 to 86 Ma) Mancos Shale produces a drab, barren landscape. However, lying within the Mancos, the Ferron Sandstone, is the most studied unit in the San Rafael Swell. The Ferron has world-class outcrops of rock layers deposited near the shorelines of a sinking, fluvial- (stream) dominated delta system. Along the west flank of the San Rafael Swell, the 80-mile-long (130 km) Ferron outcrop belt of cliffs and side canyons (e.g., the Coal Cliffs, Molen Reef, and Limestone Cliffs [not actually limestone, just misnamed]) provides a three-dimensional view of vertical and lateral changes in the Ferron’s rock layers (facies and sequence stratigraphy), and, as such, is an excellent model for fluvial-deltaic oil and gas reservoirs worldwide (e.g., Chidsey and others, 2004).

Styles APA, Harvard, Vancouver, ISO, etc.

2

Phillips, Stephen P., John A. Howell, Adrian J. Hartley et Magda Chmielewska. « Tidal estuarine deposits of the transgressive Naturita Formation (Dakota Sandstone) : San Rafael Swell, Utah, U.S.A. » Journal of Sedimentary Research 90, n^o 8 (19 août 2020) : 777–95. http://dx.doi.org/10.2110/jsr.2020.51.

Texte intégral

Résumé :

ABSTRACT Thin tidal estuarine deposits of the Naturita Formation (0–23 m) of the San Rafael Swell record the initial flooding of the Cretaceous Western Interior Seaway, Utah, and capture the transition from inland fluvial systems to fully marine conditions over a time period of 5 My or less. A tide-dominated estuarine environment is favored due to the combined presence of mud and/or carbonaceous drapes on ripples and dunes, bidirectional flow indicators, sigmoidal cross-stratification, herring-bone cross-stratification, and bimodal paleocurrent measurements. Facies associations are arranged in a predictable manner. Locally at the base of the Naturita Formation, tidally influenced fluvial channel deposits are present. These are overlain by tidal bars, including subtidal bars and intertidal point bars. Overlying the tidal bars are sand-flat and mud-flat deposits as well as bedded coal and carbonaceous mudstone that represents a supratidal setting in the estuary. The Formation can be capped by a thin transgressive lag composed of shell debris, and/or pebbles, that marks the final transition into the fully marine Tununk Shale Member of the overlying Mancos Shale. Lateral relationships between estuaries and adjacent paleohighs shed light on the influence of foreland-basin tectonics on the location and preservation of tide-dominated estuaries. Estuarine and shoreface deposits are absent along the eastern flank of the San Rafael Swell and eastward for more than 80 km. This zone of nondeposition or erosion is coincident with the location of the forebulge in the developing foreland basin, implying that growth of the forebulge prohibited the development of, or enhanced the later erosion of, estuarine deposits. Conversely, enhanced accommodation in the transition into the foredeep depozone allow the preservation of tide-dominated estuarine deposits along the western flank of the San Rafael Swell. Additionally, the possibility of a pre-Laramide tectonic history for the San Rafael Swell is indicated by a distinct lack of Naturita Formation deposits in an area that is coincident with the modern-day axis of the anticline. Overall, the Naturita records the initial flooding of the Western Interior Seaway in the San Rafael Swell region and provides an excellent case study of the deposits that are laid down in a transgressive system that passes from coastal-plain to offshore deposits.

Styles APA, Harvard, Vancouver, ISO, etc.

3

Doolittle, J. A., S. J. Neild, L. D. Sasser et J. W. Tuttle. « Characterizing a Lithosequence within the San Rafael Swell of Utah with EMI ». Soil Horizons 46, n^o 4 (2005) : 169. http://dx.doi.org/10.2136/sh2005.4.0169.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

4

Delaney, Paul T., et Anne E. Gartner. « Physical processes of shallow mafic dike emplacement near the San Rafael Swell, Utah ». Geological Society of America Bulletin 109, n^o 9 (septembre 1997) : 1177–92. http://dx.doi.org/10.1130/0016-7606(1997)109<1177:pposmd>2.3.co;2.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

5

Chidsey, Thomas, et Paul Anderson. « Spectacular crinkled crust—A detachment fold train in the Carmel Formation, western San Rafael Swell, Utah ». Geosites 1 (13 décembre 2019) : 1–9. http://dx.doi.org/10.31711/geosites.v1i1.75.

Texte intégral

Résumé :

Imagine slipping on a small rug overlying a hardwood floor. In the process of sliding along the floor the rug produces a series of small folds and the rug moves forward from its original position. The same could be said for the “crinkled crust,” or folded layers of rocks in a detachment fold train. A spectacular detachment fold train, consisting of over 100 small, regularly spaced convex-upward folds called anticlines in gypsum-rich rock layers of the Middle Jurassic (about 168 million years ago [Ma]) Carmel Formation, is exposed immediately north of Interstate 70 (I-70) in the San Rafael Swell of east-central Utah (figures 1 and 2). The SanRafael Swell, a large anticlinal uplift, is an icon for everything that makes the Colorado Plateau dramatically scenic and geologically classic. However, the fold train is located in drab-colored, relatively featureless rock layers of the Carmel Formation in an area called Reed Wash along the gently dipping west flank of the Swell. After passing magnificent canyons, buttes, and mesas both to the east and west along I-70, the fold train typically goes unnoticed by not only the average tourist but geologists as well. Once the fold train is pointed out, the geologic observer is immediately struck with awe at this large, well-exposed, complex structural feature. Literally hundreds of classic geologic sites are well displayed in the San Rafael Swell; many are easily accessed overlooks and viewpoints. The detachment fold train, by contrast, is chosen as a geosite for its geologic uniqueness, educational instruction, and research opportunities in structural geology.

Styles APA, Harvard, Vancouver, ISO, etc.

6

Heil, Kenneth, Rich Fleming, J. Porter et William Romme. « A Vegetation Study of Capitol Reef National Park ». UW National Parks Service Research Station Annual Reports 10 (1 janvier 1986) : 37–40. http://dx.doi.org/10.13001/uwnpsrc.1986.2543.

Texte intégral

Résumé :

Capitol Reef National Park lies in a relatively unexplored region of southcentral Utah. The diversity in geology and the elevation gradient (3,500-9,000 feet) allows for diverse vegetation including endemic and rare taxa (Welsh and Chatterley, 1985). Previous floristic studies have been conducted in San Rafael Swell (Harris, 1980) and the Henry Mountains (Neese, 1981); however, aside from classification of coniferous habitat types (Youngblood and Mauk, 1985), no community studies have been done in this region.

Styles APA, Harvard, Vancouver, ISO, etc.

7

Heil, Kenneth, Rich Fleming, J. Porter et William Romme. « A Vegetation Study of Capitol Reef National Park ». UW National Parks Service Research Station Annual Reports 11 (1 janvier 1987) : 25–29. http://dx.doi.org/10.13001/uwnpsrc.1987.2615.

Texte intégral

Résumé :

Capitol Reef National Park lies in a relatively unexplored region of southcentral Utah. The diversity in geology and the elevation gradient (3,500-9,000 feet) allows for diverse vegetation including endemic and rare taxa (Welsh and Chatterley, 1985). Previous floristic studies have been conducted in San Rafael Swell (Harris, 1980) and the Henry Mountains (Neese, 1981); however, aside from classification of coniferous habitat types (Youngblood and Mauk, 1985), no community studies have been done in this region.

Styles APA, Harvard, Vancouver, ISO, etc.

8

Heil, Kenneth, Rich Fleming, J. Porter et William Romme. « A Vegetation Study of Capitol Reef National Park ». UW National Parks Service Research Station Annual Reports 12 (1 janvier 1988) : 51–57. http://dx.doi.org/10.13001/uwnpsrc.1988.2697.

Texte intégral

Résumé :

Capitol Reef National Park lies in a relatively unexplored region of southcentral Utah. The diversity in geology and the elevation gradient (3,500-9,000 feet) allows for diverse vegetation including endemic and rare taxa (Welsh and Chatterley 1985). Previous floristic studies have been conducted in San Rafael Swell (Harris 1980) and the Henry Mountains (Neese 1981); however, aside from classification of coniferous habitat types (Youngblood and Mauk 1985), no community studies have been done in this region.

Styles APA, Harvard, Vancouver, ISO, etc.

9

Johnson, Kaj M., et Arvid M. Johnson. « Localization of layer-parallel faults in San Rafael swell, Utah and other monoclinal folds ». Journal of Structural Geology 22, n^o 10 (octobre 2000) : 1455–68. http://dx.doi.org/10.1016/s0191-8141(00)00046-8.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

10

Braathen, Alvar, Elizabeth Petrie, Tonje Nystuen, Anja Sundal, Elin Skurtveit, Valentin Zuchuat, Marte Gutierrez et Ivar Midtkandal. « Interaction of deformation bands and fractures during progressive strain in monocline - San Rafael Swell, Central Utah, USA ». Journal of Structural Geology 141 (décembre 2020) : 104219. http://dx.doi.org/10.1016/j.jsg.2020.104219.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

11

Neuhauser, K. R. « Sevier-age ramp-style thrust faults at Cedar Mountain, northwestern San Rafael swell (Colorado Plateau), Emery County, Utah ». Geology 16, n^o 4 (1988) : 299. http://dx.doi.org/10.1130/0091-7613(1988)016<0299:sarstf>2.3.co;2.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

12

Hunt-Foster, ReBecca, Martin Lockley, Andrew Milner, John Foster, Neffra Matthews, Brent Breithaupt et Joshua Smith. « Tracking dinosaurs in BLM canyon country, Utah ». Geology of the Intermountain West 3 (1 janvier 2016) : 67–100. http://dx.doi.org/10.31711/giw.v3.pp67-100.

Texte intégral

Résumé :

Although only recognized as a discrete stratigraphic unit since 1944, the Cedar Mountain Formation represents tens of millions of years of geological and biological history on the central Colorado Plateau. This field guide represents an attempt to pull together the results of recent research on the lithostratigraphy, chronostratigraphy, sequence stratigraphy, chemostratigraphy, and biostratigraphy of these medial Mesozoic strata that document the dynamic and complex geological history of this region. Additionally, these data provide a framework by which to examine the history of terrestrial faunas during the final breakup of Pangaea. In fact, the medial Mesozoic faunal record of eastern Utah should be considered a keystone in understanding the history of life across the northern hemisphere. Following a period of erosion and sediment bypass spanning the Jurassic–Cretaceous boundary, sedimentation across the quiescent Colorado Plateau began during the Early Cretaceous. Thickening of these basal Cretaceous strata across the northern Paradox Basin indicate that salt tectonics may have been the predominant control on deposition in this region leading to the local preservation of fossiliferous strata, while sediment bypass continued elsewhere. Thickening of overlying Aptian strata west across the San Rafael Swell provides direct evidence of the earliest development of a foreland basin with Sevier thrusting that postdates geochemical evidence for the initial development of a rain shadow.

Styles APA, Harvard, Vancouver, ISO, etc.

13

Hunt-Foster, ReBecca K., Martin G. Lockley, Andrew R. C. Milner, John R. Foster, Neffra A. Matthews, Brent H. Breithaupt et Joshua A. Smith. « Tracking dinosaurs in BLM canyon country, Utah ». Geology of the Intermountain West 3 (26 mai 2018) : 67–100. http://dx.doi.org/10.31711/giw.v3i0.8.

Texte intégral

Résumé :

Although only recognized as a discrete stratigraphic unit since 1944, the Cedar Mountain Formation represents tens of millions of years of geological and biological history on the central Colorado Plateau. This field guide represents an attempt to pull together the results of recent research on the lithostratigraphy, chronostratigraphy, sequence stratigraphy, chemostratigraphy, and biostratigraphy of these medial Mesozoic strata that document the dynamic and complex geological history of this region. Additionally, these data provide a framework by which to examine the history of terrestrial faunas during the final breakup of Pangaea. In fact, the medial Mesozoic faunal record of eastern Utah should be considered a keystone in understanding the history of life across the northern hemisphere. Following a period of erosion and sediment bypass spanning the Jurassic–Cretaceous boundary, sedimentation across the quiescent Colorado Plateau began during the Early Cretaceous. Thickening of these basal Cretaceous strata across the northern Paradox Basin indicate that salt tectonics may have been the predominant control on deposition in this region leading to the local preservation of fossiliferous strata, while sediment bypass continued elsewhere. Thickening of overlying Aptian strata west across the San Rafael Swell provides direct evidence of the earliest development of a foreland basin with Sevier thrusting that postdates geochemical evidence for the initial development of a rain shadow.

Styles APA, Harvard, Vancouver, ISO, etc.

14

Richardson, J. A., C. B. Connor, P. H. Wetmore, L. J. Connor et E. A. Gallant. « Role of sills in the development of volcanic fields : Insights from lidar mapping surveys of the San Rafael Swell, Utah ». Geology 43, n^o 11 (7 octobre 2015) : 1023–26. http://dx.doi.org/10.1130/g37094.1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

15

Kirkland, James, Marina Suarez, Celina Suarez et ReBecca Hunt-Foster. « The Lower Cretaceous in east-central Utah—The Cedar Mountain Formation and its bounding strata ». Geology of the Intermountain West 3 (1 janvier 2016) : 101–228. http://dx.doi.org/10.31711/giw.v3.pp101-228.

Texte intégral

Résumé :

Although only recognized as a discrete stratigraphic unit since 1944, the Cedar Mountain Formation represents tens of millions of years of geological and biological history on the central Colorado Plateau. This field guide represents an attempt to pull together the results of recent research on the lithostratigraphy, chronostratigraphy, sequence stratigraphy, chemostratigraphy, and biostratigraphy of these medial Mesozoic strata that document the dynamic and complex geological history of this region. Additionally, these data provide a framework by which to examine the history of terrestrial faunas during the final breakup of Pangaea. In fact, the medial Mesozoic faunal record of eastern Utah should be considered a keystone in understanding the history of life across the northern hemisphere. Following a period of erosion and sediment bypass spanning the Jurassic–Cretaceous boundary, sedimentation across the quiescent Colorado Plateau began during the Early Cretaceous. Thickening of these basal Cretaceous strata across the northern Paradox Basin indicate that salt tectonics may have been the predominant control on deposition in this region leading to the local preservation of fossiliferous strata, while sediment bypass continued elsewhere. Thickening of overlying Aptian strata west across the San Rafael Swell provides direct evidence of the earliest development of a foreland basin with Sevier thrusting that postdates geochemical evidence for the initial development of a rain shadow.

Styles APA, Harvard, Vancouver, ISO, etc.

16

Kirkland, James I., Marina Suarez, Celina Suarez et ReBecca Hunt-Foster. « The Lower Cretaceous in east-central Utah—The Cedar Mountain Formation and its bounding strata ». Geology of the Intermountain West 3 (26 mai 2016) : 101–228. http://dx.doi.org/10.31711/giw.v3i0.9.

Texte intégral

Résumé :

Although only recognized as a discrete stratigraphic unit since 1944, the Cedar Mountain Formation represents tens of millions of years of geological and biological history on the central Colorado Plateau. This field guide represents an attempt to pull together the results of recent research on the lithostratigraphy, chronostratigraphy, sequence stratigraphy, chemostratigraphy, and biostratigraphy of these medial Mesozoic strata that document the dynamic and complex geological history of this region. Additionally, these data provide a framework by which to examine the history of terrestrial faunas during the final breakup of Pangaea. In fact, the medial Mesozoic faunal record of eastern Utah should be considered a keystone in understanding the history of life across the northern hemisphere. Following a period of erosion and sediment bypass spanning the Jurassic–Cretaceous boundary, sedimentation across the quiescent Colorado Plateau began during the Early Cretaceous. Thickening of these basal Cretaceous strata across the northern Paradox Basin indicate that salt tectonics may have been the predominant control on deposition in this region leading to the local preservation of fossiliferous strata, while sediment bypass continued elsewhere. Thickening of overlying Aptian strata west across the San Rafael Swell provides direct evidence of the earliest development of a foreland basin with Sevier thrusting that postdates geochemical evidence for the initial development of a rain shadow.

Styles APA, Harvard, Vancouver, ISO, etc.

17

JEFFERY, D. L., J. L. BERTOG et J. R. BISHOP. « SEQUENCE STRATIGRAPHY OF DINOSAUR LAKE : SMALL SCALE FLUVIO-DELTAIC STRATAL RELATIONSHIPS OF A DINOSAUR ACCUMULATION AT THE AARON SCOTT QUARRY, MORRISON FORMATION, SAN RAFAEL SWELL, UTAH ». PALAIOS 26, n^o 5 (1 mai 2011) : 275–83. http://dx.doi.org/10.2110/palo.2010.p10-104r.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

18

Martz, Jeffrey, James Kirkland, Andrew Milner, William Parker et Vincent Santucci. « Upper Triassic lithostratigraphy, depositional systems, and vertebrate paleontology across southern Utah ». Geology of the Intermountain West 4 (21 avril 2017) : 99–180. http://dx.doi.org/10.31711/giw.v4.pp99-180.

Texte intégral

Résumé :

The Chinle Formation and the lower part of the overlying Wingate Sandstone and Moenave Formation were deposited in fluvial, lacustrine, paludal, and eolian environments during the Norian and Rhaetian stages of the Late Triassic (~230 to 201.3 Ma), during which time the climate shifted from subtropical to increasingly arid. In southern Utah, the Shinarump Member was largely confined to pre-Chinle paleovalleys and usually overprinted by mottled strata. From southeastern to southwestern Utah, the lower members of the Chinle Formation (Cameron Member and correlative Monitor Butte Member) thicken dramatically whereas the upper members of the Chinle Formation (the Moss Back, Petrified Forest, Owl Rock, and Church Rock Members) become erosionally truncated; south of Moab, the Kane Springs beds are laterally correlative with the Owl Rock Member and uppermost Petrified Forest Member. Prior to the erosional truncation of the upper members, the Chinle Formation was probably thickest in a southeast to northwest trend between Petrified Forest National Park and the Zion National Park, and thinned to the northeast due to the lower Chinle Formation lensing out against the flanks of the Ancestral Rocky Mountains, where the thickness of the Chinle is largely controlled by syndepositional salt tectonism. The Gartra and Stanaker Members of the Ankareh Formation are poorly understood Chinle Formation correlatives north of the San Rafael Swell. Osteichthyan fish, metoposaurid temnospondyls, phytosaurids, and crocodylomorphs are known throughout the Chinle Formation, although most remains are fragmentary. In the Cameron and Monitor Butte Members, metoposaurids are abundant and non-pseudopalatine phytosaurs are known, as is excellent material of the paracrocodylomorph Poposaurus; fragmentary specimens of the aetosaurs Calyptosuchus, Desmatosuchus, and indeterminate paratypothoracisins were probably also recovered from these beds. Osteichthyans, pseudopalatine phytosaurs, and the aetosaur Typothorax are especially abundant in the Kane Springs beds and Church Rock Member of Lisbon Valley, and Typothorax is also known from the Petrified Forest Member in Capitol Reef National Park. Procolophonids, doswelliids, and dinosaurs are known but extremely rare in the Chinle Formation of Utah. Body fossils and tracks of osteichthyans, therapsids, crocodylomorphs, and theropods are well known from the lowermost Wingate Sandstone and Moenave Formation, especially from the St. George Dinosaur Discovery Site at Johnson Farm.

Styles APA, Harvard, Vancouver, ISO, etc.

19

Martz, Jeffrey W., James I. Kirkland, Andrew R. C. Milner, William G. Parker et Vincent L. Santucci. « Upper Triassic lithostratigraphy, depositional systems, and vertebrate paleontology across southern Utah ». Geology of the Intermountain West 4 (2 août 2017) : 99–180. http://dx.doi.org/10.31711/giw.v4i0.13.

Texte intégral

Résumé :

The Chinle Formation and the lower part of the overlying Wingate Sandstone and Moenave Formation were deposited in fluvial, lacustrine, paludal, and eolian environments during the Norian and Rhaetian stages of the Late Triassic (~230 to 201.3 Ma), during which time the climate shifted from subtropical to increasingly arid. In southern Utah, the Shinarump Member was largely confined to pre-Chinle paleovalleys and usually overprinted by mottled strata. From southeastern to southwestern Utah, the lower members of the Chinle Formation (Cameron Member and correlative Monitor Butte Member) thicken dramatically whereas the upper members of the Chinle Formation (the Moss Back, Petrified Forest, Owl Rock, and Church Rock Members) become erosionally truncated; south of Moab, the Kane Springs beds are laterally correlative with the Owl Rock Member and uppermost Petrified Forest Member. Prior to the erosional truncation of the upper members, the Chinle Formation was probably thickest in a southeast to northwest trend between Petrified Forest National Park and the Zion National Park, and thinned to the northeast due to the lower Chinle Formation lensing out against the flanks of the Ancestral Rocky Mountains, where the thickness of the Chinle is largely controlled by syndepositional salt tectonism. The Gartra and Stanaker Members of the Ankareh Formation are poorly understood Chinle Formation correlatives north of the San Rafael Swell. Osteichthyan fish, metoposaurid temnospondyls, phytosaurids, and crocodylomorphs are known throughout the Chinle Formation, although most remains are fragmentary. In the Cameron and Monitor Butte Members, metoposaurids are abundant and non-pseudopalatine phytosaurs are known, as is excellent material of the paracrocodylomorph Poposaurus; fragmentary specimens of the aetosaurs Calyptosuchus, Desmatosuchus, and indeterminate paratypothoracisins were probably also recovered from these beds. Osteichthyans, pseudopalatine phytosaurs, and the aetosaur Typothorax are especially abundant in the Kane Springs beds and Church Rock Member of Lisbon Valley, and Typothorax is also known from the Petrified Forest Member in Capitol Reef National Park. Procolophonids, doswelliids, and dinosaurs are known but extremely rare in the Chinle Formation of Utah. Body fossils and tracks of osteichthyans, therapsids, crocodylomorphs, and theropods are well known from the lowermost Wingate Sandstone and Moenave Formation, especially from the St. George Dinosaur Discovery Site at Johnson Farm.

Styles APA, Harvard, Vancouver, ISO, etc.

20

Potter-McIntyre, S., J. Allen, S. Y. Lee, W. S. Han, M. Chan et B. McPherson. « Iron precipitation in a natural CO2reservoir : Jurassic Navajo Sandstone in the northern San Rafael Swell, UT, USA ». Geofluids 13, n^o 1 (11 janvier 2013) : 82–92. http://dx.doi.org/10.1111/gfl.12014.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

21

Hilliard, Lyra. « Struggle over Utah’s San Rafael Swell : Wilderness, National Conservation Areas, and National Monuments by Jeffrey O. Durrant ». Western American Literature 43, n^o 3 (2008) : 333–34. http://dx.doi.org/10.1353/wal.2008.0057.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

22

Zuluaga, Luisa F., Haakon Fossen et Atle Rotevatn. « Progressive evolution of deformation band populations during Laramide fault-propagation folding : Navajo Sandstone, San Rafael monocline, Utah, U.S.A. » Journal of Structural Geology 68 (novembre 2014) : 66–81. http://dx.doi.org/10.1016/j.jsg.2014.09.008.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

23

Díez, M., C. B. Connor, S. E. Kruse, L. Connor et I. P. Savov. « Evidence of small-volume igneous diapirism in the shallow crust of the Colorado Plateau, San Rafael Desert, Utah ». Lithosphere 1, n^o 6 (décembre 2009) : 328–36. http://dx.doi.org/10.1130/l61.1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

24

Kiyosugi, Koji, Charles B. Connor, Paul H. Wetmore, Brian P. Ferwerda, Aurélie M. Germa, Laura J. Connor et Amanda R. Hintz. « Relationship between dike and volcanic conduit distribution in a highly eroded monogenetic volcanic field : San Rafael, Utah, USA ». Geology 40, n^o 8 (août 2012) : 695–98. http://dx.doi.org/10.1130/g33074.1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

25

Bottcher, Jared L., Timothy E. Walsworth, Gary P. Thiede, Phaedra Budy et David W. Speas. « Frequent Usage of Tributaries by the Endangered Fishes of the Upper Colorado River Basin : Observations from the San Rafael River, Utah ». North American Journal of Fisheries Management 33, n^o 3 (juin 2013) : 585–94. http://dx.doi.org/10.1080/02755947.2013.785993.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

26

Zuluaga, Luisa F., Atle Rotevatn, Eirik Keilegavlen et Haakon Fossen. « The effect of deformation bands on simulated fluid flow within fault-propagation fold trap types : Lessons from the San Rafael monocline, Utah ». AAPG Bulletin 100, n^o 10 (octobre 2016) : 1523–40. http://dx.doi.org/10.1306/04151614153.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

27

Fischer, Mark P., et Ryan D. Christensen. « Insights into the growth of basement uplifts deduced from a study of fracture systems in the San Rafael monocline, east central Utah ». Tectonics 23, n^o 1 (février 2004) : n/a. http://dx.doi.org/10.1029/2002tc001470.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

28

Kirkland, James, Donald DeBlieux, ReBecca Hunt-Foster, John Foster, Kelli Trujillo et Emily Finzel. « The Morrison Formation and its bounding strata on the western side of the Blanding basin, San Juan County, Utah ». Geology of the Intermountain West 7 (4 juin 2020) : 137–95. http://dx.doi.org/10.31711/giw.v7.pp137-195.

Texte intégral

Résumé :

In 2016 and 2017, the Utah Geological Survey partnered with the U.S. Bureau of Land Management to conduct a paleontological inventory of the Morrison Formation south and west of Blanding, Utah, along the eastern margin of the Bears Ears National Monument. The Morrison in this region is critical to understanding Upper Jurassic stratigraphy across the Colorado Plateau because it is the type area for the Bluff Sandstone, Recapture, Westwater Canyon, and Brushy Basin Members of the Morrison Formation, which are the basis for nomenclature in New Mexico and Arizona as well. Researchers have disagreed about nomenclature and correlation of these units, which transition northward in the study area into the Tidwell, Salt Wash, and Brushy Basin Members. Numerous vertebrate localities make inclusion of the Bluff Sandstone and Recapture Members in the Middle Jurassic San Rafael Group, as suggested by some previous workers, unlikely. The Salt Wash Member does not separate the Bluff Sandstone and Recapture Members at Recapture Wash, but sandstone lenses of Salt Wash facies occur higher in northern Recapture exposures. Northward, along the outcrop belt east of Comb Ridge, the Bluff-Recapture interval thins, interlenses, and pinches out into the Tidwell and lower Salt Wash, with the main lower sandstone interval of the Westwater Canyon merging northward into the upper Salt Wash Member. The partly covered, 1938 type section of the Brushy Basin Member is identified along Elk Mountain Road at the southern end of Brushy Basin. We describe a detailed, accessible Morrison Formation reference section about 11.2 km (7 mi) to the south along Butler Wash. There, 81.68 m (268 ft) of Brushy Basin Member is well exposed along a road between the top of the Westwater Canyon Member and the base of the Lower Cretaceous Burro Canyon Formation. We informally call the upper sandstone bed(s) of the Westwater Canyon Member that cap mesas and benches in the region “No-Mans Island beds.” Smectitic mudstones between the No-Mans Island beds and the main sandstone body of the Westwater Canyon suggest that the Salt Wash-Brushy Basin contact to the north may be somewhat older than the base of the Brushy Basin Member as originally defined in its type area. Determining whether the No-Mans Island beds pinch out to the north or are removed by erosion below the regional basal Brushy Basin paleosol requires further research. Several significant fossil vertebrate and plant sites have been documented in the Brushy Basin type area. Newly identified volcanic ashes provided zircons for U-Pb ages of 150.67 ± 0.32 Ma from near the top of the Brushy Basin Member and of 153.7 ± 2.1 Ma and 153.8 ± 2.2 Ma for two zircons in lower part of Recapture Member. At the top of the Brushy Basin Member, ferruginous paleosols commonly overlying conglomeratic sandstone are speculated to be of Early Cretaceous age (detrital zircon age pending) and are assigned herein to the Yellow Cat Member of the Burro Canyon Formation. These iron-rich paleosols suggest wetter climatic conditions during the Jurassic-Cretaceous transition in the Blanding basin.

Styles APA, Harvard, Vancouver, ISO, etc.

29

Keller, Daniel L., Brian G. Laub, Paul Birdsey et David J. Dean. « Effects of Flooding and Tamarisk Removal on Habitat for Sensitive Fish Species in the San Rafael River, Utah : Implications for Fish Habitat Enhancement and Future Restoration Efforts ». Environmental Management 54, n^o 3 (4 juillet 2014) : 465–78. http://dx.doi.org/10.1007/s00267-014-0318-7.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

30

Stephens, Tara L., Richard J. Walker, David Healy, Alodie Bubeck et Richard W. England. « Mechanical models to estimate the paleostress state from igneous intrusions ». Solid Earth 9, n^o 4 (9 juillet 2018) : 847–58. http://dx.doi.org/10.5194/se-9-847-2018.

Texte intégral

Résumé :

Abstract. Dikes and sills represent an important component of the deformation history in volcanic systems, but unlike dikes, sills are typically omitted from traditional paleostress analyses in tectonic studies. The emplacement of sheet intrusions is commonly associated with Mode I fracturing in a low deviatoric stress state, in which dilation is perpendicular to the fracture plane. Many natural examples of sills and dikes, however, are observed to accommodate minor shear offsets, in addition to a component of dilation. Here we present mechanical models for sills in the San Rafael subvolcanic field, Utah, which use field-based measurements of intrusion attitude and opening angles to constrain the tectonic stress axes during emplacement and the relative magma pressure for that stress state. The sills display bimodal dips to the NE and SW and consistent vertical opening directions, despite variable sill dips. Based on sill attitude and opening angles, we find that the sills were emplaced during a phase of NE–SW horizontal shortening. Calculated principal stress axes are consistent (within ∼ 4°) with paleostress results for penecontemporaneous thrust faults in the area. The models presented here can be applied to any set of dilational structures, including dikes, sills, or hydrous veins, and represent a robust method for characterising the paleostress state in areas where other brittle deformation structures (e.g. faults) are not present.

Styles APA, Harvard, Vancouver, ISO, etc.

31

GIBERT, JORDI M. DE, University of. « Abstract : Environmental Ichnostratigraphy of Shallow Marine Carbonates in the Jurassic Carmel Formation, San Rafael Swell, Central Utah ». AAPG Bulletin 82 (1998). http://dx.doi.org/10.1306/00aa87ba-1730-11d7-8645000102c1865d.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

32

Kevin J. Thomas1, James P. Evans1,. « ABSTRACT : Stratigraphic and Structural Heterogeneities in Faulted Aeolian Sandstone from Borehole Geophysics and Cores, San Rafael Swell, Central Utah ». AAPG Bulletin 85 (2001). http://dx.doi.org/10.1306/61eed21a-173e-11d7-8645000102c1865d.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

33

FISCHER, MARK P., Department of Geo. « Abstract : Structural and Stratigraphic Controls on Fracture System Architecture : An Example from the Carmel Formation of the San Rafael Swell, Utah ». AAPG Bulletin 82 (1998). http://dx.doi.org/10.1306/00aa867a-1730-11d7-8645000102c1865d.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

34

Bertog, J., D. Jeffery, K. Coode, W. Hester, D. Robinson et J. Bishop. « Taphonomic patterns of a dinosaur accumulation in a lacustrine delta system in the Jurassic Morrison Formation, San Rafael Swell, Utah, USA ». Palaeontologia Electronica, 2014. http://dx.doi.org/10.26879/372.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

35

Ryan D. Christensen1, Mark P. Fisch. « Abstract : Timing, Distribution, and Controls on Fracture Systems in the San Rafael Swell, Utah : Implications for Fracturing in Laramide-Style Fault-Propagation Folds ». AAPG Bulletin 84 (2000) (2000). http://dx.doi.org/10.1306/c9ebd30f-1735-11d7-8645000102c1865d.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

36

Walker, R. J., D. Healy, T. M. Kawanzaruwa, K. A. Wright, R. W. England, K. J. W. McCaffrey, A. A. Bubeck, T. L. Stephens, N. J. C. Farrell et T. G. Blenkinsop. « Igneous sills as a record of horizontal shortening : The San Rafael subvolcanic field, Utah ». Geological Society of America Bulletin, 7 avril 2017, B31671.1. http://dx.doi.org/10.1130/b31671.1.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

37

Germa, Aurelie, Danielle Koebli, Paul Wetmore, Zachary Atlas, Austin Arias, Ivan P. Savov, Mikel Diez, Vanessa Greaves et Elisabeth Gallant. « Crystallization and Segregation of Syenite in Shallow Mafic Sills : Insights from the San Rafael Subvolcanic Field, Utah ». Journal of Petrology, 3 octobre 2020. http://dx.doi.org/10.1093/petrology/egaa092.

Texte intégral

Résumé :

Abstract Exposed plumbing systems provide important insight into crystallization and differentiation in shallow sills beneath volcanic fields. We use whole rock major element, trace element and radiogenic isotopic compositions, along with mineral geochemical data on 125 samples to examine the conditions of melt differentiation in shallow sills from the exposed 4-Ma-old San Rafael subvolcanic field (SRVF), Utah. The field consists of ∼2000 dikes, 12 sills and 63 well preserved volcanic conduits. Intrusive rocks consist of mainly fine-grained trachybasalts and coarse-grained syenites, which are alkaline, comagmatic and enriched in Ba, Sr and LREE. Within sills, syenite is found as veins, lenses, and sheets totally enveloped by the basalt. The SRVF intrusions have geochemical signatures of both enriched sub-continental lithospheric and asthenospheric mantle sources. We estimate partial melting occurred between 1·2 and 1·9 GPa (50–70 km), with mantle potential temperatures in the range 1260–1326 ± 25°C, consistent with those estimated for volcanic rocks erupted on the Colorado Plateau. Geobarometry results based on clinopyroxene chemistry indicate that (1) basalt crystallized during ascent from at least 40 km deep with limited lithospheric storage, and (2) syenites crystallized only in the sills, ∼1 km below the surface. San Rafael mafic magma was emplaced in sills and started to crystallize inward from the sill margins. Densities of basalt and syenite at solidus temperatures are 2·6 and 2·4 g/cc, respectively, with similar viscosities of ∼150 Pa s. Petrographic observations and physical properties suggest that syenite can be physically separated from basalt by crystal compaction and segregation of the tephrophonolitic residual liquid out of the basaltic crystal mush after reaching 30–45% of crystallization. Each individual sill is 10–50 m thick and would have solidified fairly rapidly (1–30 years), the same order of magnitude as the duration of common monogenetic eruptions. Our estimates imply that differentiation in individual shallow sills may occur during the course of an eruption whose style may vary from effusive to explosive by tapping different magma compositions. Our study shows that basaltic magmas have the potential to differentiate to volatile-rich magma in shallow intrusive systems, which may increase explosivity.

Styles APA, Harvard, Vancouver, ISO, etc.

38

HULEN, JEFFREY B., JAMES A. COLLIST. « Abstract : Hydrocarbons in Miocene Lamproite Dikes of the San Rafael Desert, Utah - Implications for Fault-Controlled Oil Migration and Accumulation in the Western Colorado Plateau ». AAPG Bulletin 82 (1998). http://dx.doi.org/10.1306/00aa8ad0-1730-11d7-8645000102c1865d.

Texte intégral

Styles APA, Harvard, Vancouver, ISO, etc.

Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!