Download or read book Sequence Stratigraphy Depositional Environments and Geochemistry of the Middle Cambrian Bloomington Formation in Northern Utah written by Christopher Ryan Jensen and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bloomington Formation (~425 m thick) is a latest Middle Cambrian (~506.5-505 Ma), mixed, warm water, continental-shelf carbonate and fine-grained siliciclastic unit on the Cordilleran passive margin exposed in northern Utah and southern Idaho. Thicknesses of the Bloomington Formation at Calls Fort Canyon are 111 m in the Hodges Shale Member, 230 m in the middle limestone Member, and 84 m in the Calls Fort Shale Member. The Hodges Shale and Calls Fort Shale Members are shale dominated and represent outer detrital belt deposition. The Logan Canyon outcrop of the Hodges Shale Member shows an environmental change that may represent a transition form an open marine facies into what appears to be a lagoonal facies. The middle limestone member represents shallow marine carbonate deposition on the passive margin shelf. The Bloomington Formation has a low fossil abundance and diversity when compared to correlative units such as the Wheeler and Marjum Formations. There are, however, 10-50 cm thrombolite bioherms, associated with Girvanella oncoliths. These bioherms indicate a shallow-water carbonate facies that experienced a small flooding event that gives the bioherms time and proper conditions to build up. Îþ18O and Îþ13C results both show positive and negative shifts with Îþ13CVPDB values of 1.0 to -4.7 per mil and Îþ18OVSMOW values of -12.9 to -20.8 per mil. A negative Îþ13C excursion in the Hodges Shale may correlate to a similar excursion in the base of the Wheeler Formation that represents the DICE event. Lower and Middle Cambrian Formations in the Wellsville Range have been interpreted as being part of a second order transgressive system and containing third and higher-order cycles. The contact of the Hodges Shale Member and the underlying Blacksmith Dolomite represents a flooding surface and a sequence boundary, followed by a third order cycle. Flooding is indicated by shale deposits that overlie carbonates with a shallowing upward trend. High frequency fourth or fifth order cycles are expressed as laminated shale and thick-bedded limestones as well as thick packages of interbedded, thin limestones and shales. A PCA analysis of thin section point counts indicates that the limestone lithologies of all three members repeat throughout the entire Formation, suggesting cycles of relative sea level rise that cause repeating facies.

Download or read book The Middle Cambrian Wheeler Formation written by Elizabeth S. Langenburg and published by . This book was released on 2003 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Sequence Stratigraphy and Paleoecology of the Middle Cambrian Spence Shale Member of the Langston Formation of Northeastern Utah and Southeastern Idaho written by Scott H. Wright and published by . This book was released on 1999 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Interrelationship Between the Bio and Sequence Stratigraphy of the Middle Cambrian Spence Shale of Northern Utah and Southern Idaho written by Eva Lyon and published by . This book was released on 2011 with total page 151 pages. Available in PDF, EPUB and Kindle. Book excerpt: PUBLIC ABSTRACT: This project was undertaken with the objective of discerning the relationship between sea level change and changes in the fauna of the Spence Shale. A combination of field and lab work was employed to undertake this research. The Spence Shale is rich in fossils from the earliest period of visible life on this planet. It provides a unique window onto the evolution of life and changes in the Earth at this time. It is important to study this relationship between sea level and life changes as these conditions are constantly changing, particularly in this day and age. A better understanding of these conditions may help us prepare for future changes to this planet. The research was relatively inexpensive to perform, as all materials required for analyses were readily available in the Geology Department at Utah State University or through the help of colleagues. The only area of cost was a consequence of travelling to the field area in the Wellsville Mountains, but this was negligible. Given the knowledge gained in through this project, it was well worth any costs incurred.

Download or read book The Sequence Stratigraphy of the Middle Cambrian Wheeler Formation in the Drum Mountains of West Central Utah written by Loren P. Schneider and published by . This book was released on 2000 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Sequence Stratigraphy and Paleoecology of the Middle Cambrian Spence Shale Member of the Langston Formation of Northeastern Utah and Southeastern Idaho written by Scott H. Wright and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Paleoenvironmental and Stratigraphic Interpretation of the Middle Cambrian Ute Formation Northern Utah written by Keith E. Eagan and published by . This book was released on 1996 with total page 406 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sequence Stratigraphy of the Middle Cambrian Marjum Formation written by Douglas David Smith and published by . This book was released on 2007 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stratigraphy and Depositional Environments of Lower and Middle Cambrian Strata in the Lake Mead Region Southern Nevada and Northwestern Arizona written by Joseph Kirk Hardy and published by . This book was released on 1986 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Publication written by and published by . This book was released on 1979 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Special Publication written by Montana Bureau of Mines and Geology and published by . This book was released on 1978 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Belt Basin Window to Mesoproterozoic Earth written by John S. MacLean and published by Geological Society of America. This book was released on 2016-06-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: With its thickness of more than 15 km of strata, covering some 200,000 km2, the Belt basin displays one of the planet's largest, best-exposed, most accessible, and best-preserved sequences of Mesoproterozoic sedimentary and igneous rocks. This volume focuses on research into this world-class province; kindles ideas about this critical era of Earth evolution; and covers aspects of the basin from its paleontology, mineralogy, sedimentology, and stratigraphy to its magmatism, ore deposits, geophysics, and structural geology.

Download or read book Current Geological and Geophysical Studies in Montana written by and published by . This book was released on 1979 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Current Geological and Geophysical Studies in Montana 1978 written by D. C. Lawson and published by . This book was released on 1958 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Middle and Upper Devonian written by Maryland Geological Survey and published by . This book was released on 1913 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrogeology of Morgan Valley Morgan County Utah written by Janae Wallace and published by Utah Geological Survey. This book was released on 2012-01-16 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report characterizes the relationship of geology to groundwater occurrence and flow, with emphasis on determining the thickness of the valley-fill aquifer and water yielding properties of the fractured rock aquifers. Develops a water budget for the drainage basin and classifies the groundwater quality and identifies the likely sources of nitrate in groundwater.

Download or read book Geology of Illinois written by Dennis R. Kolata and published by University of Illinois Press. This book was released on 2010 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geology of Illinois has been compiled from more than a century of earth science investigations in Illinois. For the first time, this information has been summarized and made accessible in one volume to help both geologists and non-geologists better understand how the state's mostly unseen geology affects, and is affected by, life on the surface. More than 200 color photographs, maps, and drawings illustrate the text. Topics include : the history of geological investigations in Illinois; the impact of the state's tectonic and structural history; the properties and classification of its rocks and sediments; the rich heritage of its land, water, and mineral resources; the threats from its geological hazards; and the application of geological information to societal issues.