Results 51 to 60 of about 1,613 (196)

Estimation of the Oil‐in‐Place Resources in the Liquid‐Rich Shale Formations Exploiting Geochemical and Petrophysical Data in a 3D High‐Resolution Geological Model Domain: Baltic Basin Case Study

Geofluids, Volume 2020, Issue 1, 2020., 2020
The paper discusses the issue of oil‐in‐place estimation for liquid‐saturated shales in Lower Paleozoic (Silurian and Ordovician) organic‐rich formations of the Baltic Basin in North Poland. The authors adopted a geochemical method based on Rock Eval results which directly measure hydrocarbon content present in rock samples.
Krzysztof Sowiżdżał, Tomasz Słoczyński, Weronika Kaczmarczyk, Hui Pu   +3 more
wiley   +1 more source

Carbonates in Skeleton-poor Seas: New Insights From Cambrian and Ordovician Strata of Laurentia [PDF]

, 2010
Calcareous skeletons evolved as part of the greater Ediacaran–Cambrian diversification of marine animals. Skeletons did not become permanent, globally important sources of carbonate sediment, however, until the Ordovician radiation.
Finnegan, Seth, Fischer, Woodward W., Knoll, Andrew H., Pruss, Sara B.   +3 more
core   +3 more sources

Depositional environments and stratigraphy of the Upper Cambrian-lower Ordovician Santa Rosita formation at the Alfarcito area, Cordillera Oriental, Argentina: integration of biostratigraphic data within a sequence stratigraphic framework

Latin American Journal of Sedimentology and Basin Analysis, 2021
The Upper Cambrian-Tremadocian rocks exposed in the Alfarcito area of Cordillera Oriental, northwest Argentina reveal a series of transgressive-regressive cycles punctuated by incision of fluvio-estuarine valleys.
Luis A. Buatois, Fernando J. Zeballo, Guillermo L. Albanesi, Gladys Ortega, N. Emilio Vaccari, M. Gabriela Mángano   +5 more
doaj   +2 more sources

Cambrian Furongian–Middle Ordovician conodonts in the northeastern margin of the South China Block (Chuzhou, Anhui province) and their paleogeographic implications [PDF]

Journal of Micropalaeontology
The South China Block is crucial for the global study of Cambrian to Ordovician conodont biostratigraphy, but research on its northeastern margin is relatively scarce.
B. Hu, S. Li, C. Cheng, M. Li, W. Xie, X. Wei   +5 more
doaj   +1 more source

First description of Skolithos burrows from the Cambrian–Ordovician boundary interval of the Central Anti-Atlas, Morocco [PDF]

Estonian Journal of Earth Sciences, 2017
Skolithos burrows indicate high-energy nearshore environment. In this paper, abundant Scolithos burrows from two particular levels of the Cambrian–Ordovician boundary interval of the Central Anti-Atlas, Morocco, are described for the first time.
Abdelfattah Azizi, Olev Vinn, Khadija El Hariri, Ahmid Hafid, Khaoula Kouraiss   +4 more
doaj   +1 more source

The conodont genus Teridontus (Miller, 1980) from the Early Ordovician of Montagne Noire, France [PDF]

, 2008
THE CONODONT genus Teridontus was introduced in 1980 by Miller and was based on the Late Cambrian species Oneotodus nakamurai Nogami, 1967 from the Yencho Member of the Fengshan Fm. of northeast China.
Ferretti, Annalisa, Nicoll, Robert S., Serpagli, Enrico, Serventi, Paolo   +3 more
core   +1 more source

Biostratigraphy and correlation of the Cambrian Series 2 (Stage 4) to Miaolingian (Wuliuan) Thorntonia Limestone, south‐eastern Georgina Basin (Queensland, Australia)

Papers in Palaeontology, Volume 11, Issue 5, September/October 2025.
Abstract The Australian Cambrian stratigraphic record is one of the most complete for any continent. However, there is a general division, with older Cambrian rocks in South Australia (predominantly Terreneuvian, Stage 2 to Miaolingian, Wuliuan) and younger rocks in northern Australia (mostly latest Series 2, Stage 4 and younger), with minimal ...
Marissa J. Betts, Patrick M. Smith, John R. Paterson, Evelyn M. Mervine, Daniel A. Stirling, James D. Holmes   +5 more
wiley   +1 more source

Evaluation of a New Zealand Tremadocian trilobite

Geological Magazine, 1979
SummaryDionide hectoriReed, 1926, is shown on the basis of new collections from the type area in New Zealand to be a Tremadocian ceratopygide close toHysterolenus. The species was placed inTaihungshaniaby Kobayashi (1941). It was provisionally retained in the Taihungshaniidae by Lu (1975) who madehectoritype species of a new genusHectoria ...
openaire   +2 more sources

Conodonts in Ordovician biostratigraphy [PDF]

, 2017
The long time interval after Pander's (1856) original conodont study can in terms of Ordovician conodont biostratigraphical research be subdivided into three periods, namely the Pioneer Period (1856-1955), the Transition Period (1955-1971) and the Modern
Abaimova, Agematsu, Agematsu, Albanesi, Amsden, An, An, An, An, Armstrong, Armstrong, Bagnoli, Balini, Bauer, Bauer, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Bergström, Branson, Branson, Burrett, Cooper, Cullison, Del Moral, Druce, Druce, Dumoulin, Dzik, Dzik, Dzik, Ethington, Ethington, Feltes, Ferretti, Ferretti, Ferretti, Ferretti, Ferretti, Ferretti, Ferretti, Furnish, Graves, Harris, Hinde, Holm, Ji, Johnston, Knüpfer, Lapworth, Lehnert, Lehnert, Lindström, Lindström, Lindström, Löfgren, Löfgren, Löfgren, Löfgren, Löfgren, Löfgren, Löfgren, McCracken, McTavish, Miller, Miller, Miller, Moskalenko, Moskalenko, Männik, Ni, Nowlan, Orchard, Pander, Paris, Pohler, Pohler, Pyle, Pyle, Rasmussen, Rhodes, Rhodes, Sarmiento, Savage, Sennikov, Sergeeva, Serpagli, Serpagli, Serpagli, Serpagli, Serra, Smith, Smith, Smith, Stauffer, Stauffer, Stouge, Stouge, Stouge, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Sweet, Tjernvik, Tjernvik, Tolmacheva, Tolmacheva, Tolmacheva, Viira, Viira, Viira, Voldman, Wang, Wang, Wang, Wang, Watson, Weyant, Wiman, Wiman, Young, Zhan, Zhang, Zhang, Zhang, Zhang, Zhao, Zhen, Zhen, Zhen, Zhen, Zhen, Álvaro   +148 more
core   +1 more source

Biostratigraphic significance of the latest Cambrian-earliest Ordovician agnostoid trilobites from Northwestern Argentina [PDF]

, 2003
The biostratigraphic significance of the latest Cambrian-earliest Ordovician trilobite agnostoids from northwestern Argentina is summarized. A characterization of the faunas recognized below and above the Cambrian-Ordovician boundary is presented on the ...
Tortello, M. F.
core   +4 more sources