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Ordovician and Silurian Siliciclastic Strata of the Middle Tianshan (Eastern Kyrgyzstan): Age and Provenance According to Detrital Zircon Dating
AbstractDetrital zircon dating allows us to elucidate the age and provenance of siliciclastic strata of the Sarydjaz and Ichkebash formations in the...
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Facies analysis and depositional evolution of Lower–Middle Ordovician carbonates in the Shuntuoguole Low Uplift of Tarim Basin (NW China)
As a result of a deep burial depth (> 6.5 km), the depositional history of the Early to Middle Ordovician carbonate platform in the Shuntuoguole Low...
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Middle Ordovician (middle Darriwilian) Dirafinesquina and Jigunsania gen. nov. (Rafinesquinidae; Strophomenoidea; Brachiopoda) from South Korea, with discussion of rafinesquinid evolution
Three rafinesquinid brachiopod (Strophomenoidea) species, Dirafinesquina chosenensis, Jigunsania guraeriensis gen. et sp. nov., and Jigunsania...
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Early Ordovician–Middle Silurian Subduction-Closure of the Proto-Tethys Ocean: Evidence from the Qiaerlong Pluton at the Northwestern Margin of the West Kunlun Orogenic Belt, NW China
Early Paleozoic magmatism in the West Kunlun Orogenic Belt (WKOB) preserves important information about the tectonic evolution of the Proto-Tethys...
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Ordovician Lithostratigraphic Sequence and Sedimentary Evolution in the Middle Section of the Western Ordos Basin
In recent years, many theoretical studies and production practices have been carried out around the exploration of oil and gas resources in the...
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The Ordovician Period
This chapter provides general geologic information about the Ordovician Period, including definitions, classifications, fauna and flora,...
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Ordovician integrative stratigraphy, biotas, and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas
The Ordovician rocks on the Qinghai-Tibetan Plateau represent the oldest non-metamorphic strata, and are critical to understanding the history of...
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Hydrothermal Process Features and Formation Mechanism of Middle-Lower Ordovician Dolomite Reservoir in Tadong Area
Hydrothermal process is common in the Middle-Lower Ordovician carbonate reservoirs in Tadong Area, which is an important diagenetic process for...
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Confirmation of the Floian-Darriwilian (Lower to Middle Ordovician) hiatus in the Taebaek Group, Korea: integration of conodont biostratigraphy and sedimentology
An Ordovician depositional hiatus spanning the middle Floian to lower Darriwilian, estimated to represent a period of at least 3 Myr, is confirmed...
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Oxygenation of the Baltoscandian shelf linked to Ordovician biodiversification
Marine biodiversity increased markedly during the Ordovician Period (~487–443 million years ago). Some intervals within the Ordovician were...
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Branched Holdfasts of Stemmed Echinoderms from the Middle Ordovician of the Leningrad Region
AbstractAs a result of examination of the collection of holdfasts of stemmed echinoderms from the Ordovician of the Leningrad oblast, Russia, all...
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New Isograptinae Species (Graptoloidea, Isograptidae) from the Middle Ordovician of Gorny Altai
AbstractThe structure of the proximal part of colonies of the Middle Ordovician Isograptinae and the species composition of the genera Oncograptus ...
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Middle Ordovician Conodont Biostratigraphy of Australasia
Seven conodont biozones are recognized in the carbonate-dominated shelf-marine Middle Ordovician developed in the intracratonic sedimentary basins...
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Ordovician tectonics of the South European Variscan Realm: new insights from Sardinia
Although much is known about the Ordovician tectonics of the South European Variscides, aspects of their geodynamic evolution and palaeogeographic...
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Ecological Features of Echinoderm Distribution in the Latorp and Volkhov Regional Stages of the Lower and Middle Ordovician of the Leningrad Region
AbstractThe systematic composition and paleoecological distribution of echinoderms in the rocks of the Latorp and Volkhov regional stages of the...
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Research on the development regularity of Ordovician limestone karst in Liangzhuang coalfield
Unlike the conventional approach to prevent and control water in the Ordovician limestone layer under the mine floor, which contains water. In this...
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Sedimentary characteristics and depositional evolution of carbonate platform during the Cambrian and Ordovician in eastern Tarim Basin, NW China
The eastern Tarim Basin (Tadong Area) has gained wide attentions on large-scale marine carbonate reservoirs in Cambrian-Ordovician due to significant...
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First Specimens of the Cornutan Stylophoran Phyllocystis (Echinodermata) in the Ordovician (Volkhov Regional Stage, Da**ian and Darriwilian) of Baltica and Special Aspects of Stylophoran Axial Symmetry
AbstractTwo new species of cornutan stylophora of the genus Phyllocystis are described from the Volkhov Regional Stage (Middle Ordovician,...
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Strontium isotopes in the Ordovician paleokarst reservoirs, Huanghua Depression, China
To find out the features of strontium isotopes in paleokarst reservoirs, the origins and features of strontium isotopes in the Ordovician karst...
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Globular Phyllosilicates of the Glauconite–Illite Series in the Cambrian and Ordovician Rocks of the Eastern Baltica (Northern Estonia, Western Lithuania, and Western Latvia)
AbstractThe mineralogical, structural and crystal-chemical features of seven samples of globular phyllosilicates of the glauconite–illite series...
