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Relevant bibliographies by topics / Ordovician Geologic Period

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Academic literature on the topic 'Ordovician Geologic Period'

Author: Grafiati

Published: 4 June 2021

Last updated: 27 July 2025

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Journal articles on the topic "Ordovician Geologic Period"

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Zinsmeister, William J. "Discovery of fish mortality horizon at the K-T Boundary on Seymour Island: Re-evaluation of events at the end of the Cretaceous." Journal of Paleontology 72, no. 3 (1998): 556–71. http://dx.doi.org/10.1017/s0022336000024331.

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The discovery of a fish bone layer immediately overlying the K-T iridium anomaly on Seymour Island, Antarctic Peninsula, which may represent the first documented mass kill associated with the impact event, together with new faunal data across the boundary has provided new insight into events at the end of the Cretaceous. The utilization of a geographical approach and a new graphical representation of range data has revealed that events at the end of the Cretaceous were not instantaneous, but occurred over a finite period of time. Although the fish bone layer may contain victims of the impact e

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Dinh, Sang Quang. "Petrographic characteristics and zircon UPb geochronology of granitogneiss rocks in the Chu Lai - Kham Duc area (Quang Nam province)." Science and Technology Development Journal - Natural Sciences 1, no. 6 (2018): 258–72. http://dx.doi.org/10.32508/stdjns.v1i6.636.

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The early Palaeozoic granitogneiss association in the Chu Lai - Kham Duc area (Quang Nam) is a large area of hundreds of km2, along southern of the East – West ductile deformation zones (Tam Ky – Phuoc Son fault zone), which is studied in detail in different geologic maps scales by the geologists, which is named Chu Lai complex. The five samples studied in detail are composed mainly of granitogneiss and biotite gneiss from the Chu Lai - Kham Duc area. The samples were crushed and large zircons were extracted. The in-situ zircon U–Pb geochronology was conducted on five samples (60 zircons in to

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Bertrand, Rudolf. "Maturation thermique et histoire de l'enfouissement et de la génération des hydrocarbures du bassin de l'archipel de Mingan et de l'île d'Anticosti, Canada." Canadian Journal of Earth Sciences 27, no. 6 (1990): 731–41. http://dx.doi.org/10.1139/e90-075.

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Carbonate platform sequences of Anticosti Island and the Mingan Archipelago are Early Ordovician to Early Silurian in age. With the exception of the Macasty Formation, the sequences are impoverished in dispersed organic matter, which is chiefly composed of zooclasts. Zooclast reflectances suggest that the Upper Ordovician and Silurian sequences outcropping on Anticosti Island are entirely in the oil window but that the Lower to Middle Ordovician beds of the Mingan Archipelago and their stratigraphic equivalents in the subsurface of most of Anticosti Island belong to the condensate zone. Only t

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Woods, Mark T., David R. Russell, and Robert B. Herrmann. "Dispersion of Short Period Rayleigh Waves Within The Ozark Uplift and Illinois Basin." Seismological Research Letters 60, no. 3 (1989): 111–18. http://dx.doi.org/10.1785/gssrl.60.3.111.

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Abstract We use data recorded by four arrays of portable instruments to investigate the propagation of short period (0.2≤T ≤2.0 sec) surface waves within the Ozark Uplift and Illinois Basin. At the regional scale, we construct group velocity dispersion curves for five suites of propagation paths, and invert them for shear velocity structure. The best model in each case consists of a single layer above a halfspace, and we can correlate the model units with geologic formations. The upper layer in the two Ozark Uplift models represents Ordovician and Cambrian carbonate strata, the halfspace corre

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Grema, Haruna M., Joseph M. Magnall, Sarah A. Gleeson, et al. "Mineralogy and Paragenesis of the Boundary Zone Zn-Pb ± Ag Deposit, Yukon, Canada." Economic Geology 119, no. 8 (2024): 1833–59. https://doi.org/10.5382/econgeo.5115.

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Abstract Clastic-dominated (CD-type) Zn-Pb ± Ag deposits account for significant global Zn and Pb resources. In this contribution, we describe a new Zn-Pb ± Ag deposit, Boundary Zone, recently discovered in the Macmillan Pass district, Yukon, Canada. Nine drill holes were sampled and studied using petrography, mineralogy (whole-rock and clay fraction X-ray diffractometry), and U-Pb geochronology on fluorapatite. These methods were used to develop a mineralogical paragenesis in order to constrain the timing of and controls on sulfide mineralization. The mineralization at Boundary Zone is hosted

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Legrand, Philippe. "Late Ordovician-early Silurian paleogeography of the Algerian Sahara." Bulletin de la Société Géologique de France 174, no. 1 (2003): 19–32. http://dx.doi.org/10.2113/174.1.19.

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Abstract Introduction. It is believed that an inlandsis covered the northern half of the African Gondwana at the end of the Ordovician. After a review of the stratigraphic framework and the methodology used, an attempt is made to reconstruct the successive stages of the advance of the sea at the end of the Ordovician and in the early Silurian in a region believed to have been close to the pole. Only the Algerian Sahara is taken in consideration (fig. 1). Some suggestions are made on the role of the glacio-eustatism in the « Silurian » transgression of the Algerian Sahara. Lithostratigraphy. Be

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Ilyin, D. А., T. E. Elshina, and S. Yu Katsko. "Development of a Methodology for Geoinformation Support for Geological Research of Ordovician Rocks of Gorny Altai." Interexpo GEO-Siberia 6 (May 18, 2022): 68–75. http://dx.doi.org/10.33764/2618-981x-2022-6-68-75.

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The relevance of the topic is determined by the fact that many rocks of the Ordovician age have been found in the Altai Mountains, which may be of interest to scientists studying the geology and paleontology of this period. The problem is connected that at the moment there are no maps with outcrops of Ordovician rocks in the public domain, there are only diagrams and schematic maps without a coordinate reference. The aim of the work is to develop a methodology for geoinformation support for geological research of Gorny Altai. To achieve this goal, it is necessary to solve the following tasks:

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McKerrow, W. S., R. St J. Lambert, and L. R. M. Cocks. "The Ordovician, Silurian and Devonian periods." Geological Society, London, Memoirs 10, no. 1 (1985): 73–80. http://dx.doi.org/10.1144/gsl.mem.1985.010.01.08.

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Gradstein, Felix M., and Stan Finney. "On the Ordovician Period and Quaternary Sub-Era." GeoArabia 12, no. 1 (2007): 205–10. http://dx.doi.org/10.2113/geoarabia1201205.

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Vanden Berg, Beth, Christophe Nussbaumer, Amy Noack, et al. "A comparison of the relationship between measured acoustic response and porosity in carbonates across different geologic periods, depositional basins, and with variable mineral composition." Interpretation 6, no. 2 (2018): T245—T256. http://dx.doi.org/10.1190/int-2017-0108.1.

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Recent work has shown that there is a predictable inverse relationship between laboratory-measured sonic velocity response and porosity in carbonates, which can be reasonably approximated using the empirical Wyllie time-average equation (WTA). The relationship was initially identified in late Cretaceous to Cenozoic age samples collected from the Great Bahama Bank and the Maiella Platform, an exhumed Cretaceous carbonate platform in Italy. We have compared older carbonate samples from different basins and different geologic ages to determine the applicability of this relationship and subsequent

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Dissertations / Theses on the topic "Ordovician Geologic Period"

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El-Sherif, Noran MHM. "Palaeoecological Analysis of the Decline in Stromatolite Abundance during the Ordovician Period." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1369749773.

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Books on the topic "Ordovician Geologic Period"

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R, Laurie J., and Paterson J. R, eds. Cambro-Ordovician studies. Association of Australasian Palaeontologists, 2004.

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2

Yu, Wang, ed. Community paleoecology as a geologic tool: The Chinese Ashgillian-Eifelian (latest Ordovician through early Middle Devonian) as an example. Geological Society of America, 1987.

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Hallam, Tony. Catastrophes and Lesser Calamities. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780198524977.001.0001.

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In Catastrophes and Lesser Calamities, renowned geologist Tony Hallam takes us on a tour of the Earth's history, and of the cataclysmic events, as well as the more gradual extinctions, that have punctuated life on Earth throughout the past 500 million years. While comparable books in this field of study tend to promote only one likely cause of mass extinctions, such as extraterrestrial impact, volcanism, and or climatic cooling, Catastrophes and Lesser Calamities breaks new ground, as the first book to attempt an objective coverage of all likely causes, including sea-level and climatic changes

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Book chapters on the topic "Ordovician Geologic Period"

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Cooper, R. A., P. M. Sadler, O. Hammer, and F. M. Gradstein. "The Ordovician Period." In The Geologic Time Scale. Elsevier, 2012. http://dx.doi.org/10.1016/b978-0-444-59425-9.00020-2.

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Goldman, D., P. M. Sadler, S. A. Leslie, M. J. Melchin, F. P. Agterberg, and F. M. Gradstein. "The Ordovician Period." In Geologic Time Scale 2020. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-824360-2.00020-6.

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Cooper, R. A., and P. M. Sadler. "The Ordovician Period." In A Geologic Time Scale 2004. Cambridge University Press, 2005. http://dx.doi.org/10.1017/cbo9780511536045.013.

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Harris, Anthony C., David R. Cooke, Ana Liza Garcia Cuison, et al. "Chapter 30: Geologic Evolution of Late Ordovician to Early Silurian Alkalic Porphyry Au-Cu Deposits at Cadia, New South Wales, Australia." In Geology of the World’s Major Gold Deposits and Provinces. Society of Economic Geologists, 2020. http://dx.doi.org/10.5382/sp.23.30.

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Abstract The Cadia district of New South Wales contains four alkalic porphyry Au-Cu deposits (Cadia East, Ridgeway, Cadia Hill, and Cadia Quarry) and two Cu-Au-Fe skarn prospects (Big Cadia and Little Cadia), with a total of ~50 Moz Au and ~9.5 Mt Cu (reserves, resources, and past production). The ore deposits are hosted by volcaniclastic rocks of the Weemalla Formation and Forest Reefs Volcanics, which were deposited in a submarine basin on the flanks of the Macquarie Arc during the Middle to Late Ordovician. Alkalic magmatism occurred during the Benambran orogeny in the Late Ordovician to ea

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AKGÜN, Funda, and Mine Sezgül KAYSERİ ÖZER. ""TÜRKİYE PALEOVEJETASYONUNUN JEOLOJİK ZAMAN İÇERİSİNDEKİ DEĞİŞİMİ VE BİYOÇEŞİTLİLİK"." In BİYOÇEŞİTLİLİK VE EKOSİSTEMLER. TÜRKİYE BİLİMLER AKADEMİSİ, 2023. http://dx.doi.org/10.53478/tuba.978-625-8352-58-0.ch15.

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"Paleobotanical and paleopalynological studies contain information from the appearance of the first vascular terrestrial plants in the Late Ordovician-Silurian to the Neogene in 4.5 billion years of Earth geological history. In this period based on published studies., the traces of plant life in Anatolia as macro and microflora and their ecological responses have been shared very concisely. In the geological time scale, issues such as continental movements, geomorphology, sea and land effect-view, sea level changes, atmospheric oxygen and carbon dioxide concentration, temperature changes, whic

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McKay*, Matthew P., and William T. Jackson Jr. "Geology of the Ouachita Mountains and linkages to North American late Paleozoic orogenesis." In Field Guides to the Ozarks: Exploring Karst, Ore, Trace Fossils, and Orogenesis. Geological Society of America, 2024. http://dx.doi.org/10.1130/2024.0068(04).

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ABSTRACT Correlations of Paleozoic strata from the southern Appalachian, Black Warrior, and Ouachita-Arkoma forelands show varying lithofacies and stratigraphic thicknesses for coeval deposits, as well as differences in the location of disconformities. This field trip will visit stops throughout the Ouachita Mountains and Arkoma basin to observe clastic strata variability in the Cambrian, Ordovician–Silurian, Mississippian, and Pennsylvanian periods. The spatial-temporal relationship between these units provides a first-order understanding of orogenic processes along the southeastern and south

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Conference papers on the topic "Ordovician Geologic Period"

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Djezzar, Sofiane, Aldjia Boualam, Habib Ouadi, et al. "Geological Characterization of Lower Devonian Reservoirs in Reggane Basin, Algeria." In SPE Annual Technical Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/210162-ms.

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Abstract In the Reggane basin, the most promising petroleum system is represented by the Lower Devonian, Cambro-Ordovician, and Carboniferous reservoirs. Most of the traps are linked to structures with very complex geometry, generally leaning on reverse faults, under superficial detachment levels. The generation of hydrocarbons took place, in the Paleozoic during the burial period (Upper Devonian-Carboniferous) and probably during the overheating of the Jurassic. The basin architecture is the outcome of a superposition of several tectonic phases from the Caledonian to the Hercynian tectonic ev

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Fu, Suotang, Shengli Xi, Jian Yu, et al. "First Success of Marine Shale Gas in Ordos Basin: A Review of Recent Exploration Breakthrough in Ordovician Wulalike Formation." In SPE/IATMI Asia Pacific Oil & Gas Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205637-ms.

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Abstract Ordos basin in central China is well known for its rich accumulation of natural resources, including Triassic tight oil and Permian tight gas. A recent exploration breakthrough shows that Ordovician shale in the same basin is also promising. The purpose of this study is to capture the engineering details of two horizontal exploration wells exploration in Wulalike formation, which mark the first production of marine shale gas in Ordos basin. The Ordovician Wulalike formation in the Ordos basin was previously seen as source rock. During early exploration in the 2010s, the formation was

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Alamooti, M., and S. Namie. "Analysis of the Deadwood Formation in North Dakota: Applying Rock Physics." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0858.

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ABSTRACT: The geothermal potential within North Dakota's Deep Sedimentary Basin formations, particularly the Deadwood Formation, holds promise. Viability of developing unconventional geothermal reservoirs in these complex lithologies depends on thorough subsurface characterization and modeling before injection. Advanced rock physics modeling techniques become essential to unravel the fundamental petrophysical properties and architectures to pinpoint optimal zones. This research uses rock physics methodologies to accurately classify lithofacies and characterize the reservoir rocks in the Deadwo

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Reports on the topic "Ordovician Geologic Period"

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Hammond, Becky J. Interim Geologic Map of the Jarvis Peak Quadrangle, Washington County, Utah (GIS Reproduction of UGS OFR-212 [1991]). Utah Geological Survey, 2023. http://dx.doi.org/10.34191/ofr-753dr.

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The Jarvis Peak Quadrangle in southwestern most Utah encompasses the southern portion of the Beaver Dam Mountains and lies within the transition zone between the Colorado Plateau and Basin and Range physiographic provinces. The Beaver Dam Mountain uplift isa northwest-trending, doubly-plunging anticline bounded on the east by the Shivwits syncline. These major folds were developed during the late Mesozoic-early Cenozoic Sevier-Laramide orogeny and are truncated on the east by the Grand Wash-Reef Reservoir-Gunlock fault zone. The Grand Wash fault is a major normal fault that extends southward f

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