Výsledky vyhledávání - "Richard D. Dayvault"

Celestine-Bearing Geodes from Wayne and Emery Counties, Southeastern Utah: Genesis and Mineralogy

Autor: Richard D. Dayvault, Daniel E. Kile, H. Steven Hatch, William C. Hood

Publikováno v: Rocks & Minerals. 90:314-337

Geodes containing celestine with associated quartz, calcite, chlorite, and other minerals occur in the Jurassic Curtis Formation of Emery and Wayne counties off the east and south flanks of the San...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::04c043231b9050968367b2ebdd8dc779
https://doi.org/10.1080/00357529.2015.1034489

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Colorful Agate and Jasper of Southeastern Utah

Autor: Richard D. Dayvault

Publikováno v: Rocks & Minerals. 89:308-327

Unless otherwise noted, all photos by Frank J. DanielsWhat do agates and jaspers of southeastern Utah have to do with rotted wood, algae, Martian blueberries, dinosaur coprolites, and Arabian coast...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c292e740ddbfd78d33397db0592a1965
https://doi.org/10.1080/00357529.2014.904661

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Greater palaeobiodiversity in conifer seed cones in the Upper Jurassic Morrison Formation of Utah, USA

Autor: Ruth A. Stockey, Richard D. Dayvault, William D. Tidwell, Carole T. Gee

Publikováno v: Palaeobiodiversity and Palaeoenvironments. 94:363-375

Although fossil conifer wood, leaves, and pollen have been known from the Upper Jurassic Morrison Formation of the Western Interior of North America for many decades, only a few conifer seed cones have been described as carbonaceous compressions and

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d313734767aa7c9fce437c83487996a2
https://doi.org/10.1007/s12549-014-0160-1

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Genesis and Classification of Agates and Jaspers: A New Theory by Marco Campos-Venuti, Printed by Tophgrafia Luciani, Rome, Italy. Order from www.agatesandjaspers.com. 160 pages; 2012; $45 plus shipping (softbound)

Autor: Richard D. Dayvault

Publikováno v: Rocks & Minerals. 89:378-380

Several decades ago most jasper and agate specimens were relegated to a back corner of the showcase—indeed their mineral pedigree was even doubted by many. Well, their microcrystalline makeup is qu...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::63da4bd95e6cf756c2129237742c18e0
https://doi.org/10.1080/00357529.2014.904675

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Conifer Cones from the Jurassic and Cretaceous Rocks of Eastern Utah

Autor: Richard D. Dayvault, H. Steven Hatch

Publikováno v: Rocks & Minerals. 82:382-397

(2007). Conifer Cones from the Jurassic and Cretaceous Rocks of Eastern Utah. Rocks & Minerals: Vol. 82, No. 5, pp. 382-397.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d0f5b275bf204c1fb4a87992a6e10086
https://doi.org/10.3200/rmin.82.5.382-397

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CYCADS: From the Upper jurassic and lower cretaceous rocks of Southeastern Utah

Autor: H. Steven Hatch, Richard D. Dayvault

Publikováno v: Rocks & Minerals. 80:412-432

(2005). CYCADS: From the Upper jurassic and lower cretaceous rocks of Southeastern Utah. Rocks & Minerals: Vol. 80, No. 6, pp. 412-432.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ab47bac0ade63c342f7ebeacbc873dc7
https://doi.org/10.3200/rmin.80.6.412-432

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The Green River Formation Fossil Quarries: Of Wyoming

Autor: Richard D. Dayvault

Publikováno v: Rocks & Minerals. 67:256-261

(1992). The Green River Formation Fossil Quarries: Of Wyoming. Rocks & Minerals: Vol. 67, No. 4, pp. 256-261.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a8a24861d5d311601ecd07844e36fe92
https://doi.org/10.1080/00357529.1992.9926490

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