Results 101 to 110 of about 6,764 (250)

Upper Cambrian/Lower Ordovician conodont and graptolite records in the Lari section, Salar del Rincón, Puna of Salta, Argentina [PDF]

open access: yes, 2013
Fil: Giuliano, María Eugenia. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas, Físicas y Naturales. Museo de Paleontología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Córdoba. Centro
Albanesi, Guillermo Luis   +3 more
core   +1 more source

Linguloidean brachiopods from the Lower Ordovician (Tremadocian) of northwestern Argentina [PDF]

open access: yes, 2015
The new obolid Torobolus subplanus gen. et sp. nov., from the lower Temadocian Devendeus Formation, the new species Libecoviella tilcarensis and Leptembolon argentinum, and Ectenoglossa sp.
Benedetto, Juan Luis Arnaldo   +1 more
core  

Biogenic and physical sedimentary structures in latest Cambrian-earliest Ordovician mudrock facies (Famatina Range, Northwestern Argentina) [PDF]

open access: yes, 2003
Lamination is a common feature in shales and other mud-dominated rocks. When combined with other geological evidence, the diverse lamination types can provide important information about sedimentary processes and depositional environments.
Esteban, S.B.
core   +3 more sources

BALANOGLOSSITES-DOMINATED ICHNOFABRICS AND DIAGENETIC OVERPRINT IN THE EARLY EMSIAN LIMESTONE-DOMINATED SUCCESSION OF THE PRAGUE SYNFORM

open access: yesRivista Italiana di Paleontologia e Stratigrafia
The ichnofossil record of the early Emsian limestone-dominated succession in the Prague Synform, including the Bohemian Graptolite Event beds, was studied with a focus on ichnofabric development and its sedimentological and diagenetic implications.
Radek Mikuláš   +4 more
doaj   +1 more source

Tasmanian graptolite record.

open access: yesPapers and proceedings of the Royal Society of Tasmania, 1928
R. A. KEBLE, Palaeontologist to the National Museum, Melbourne, and to the Geological Survey of Victoria. In 1902 the late Dr. T. S. Hall commented on the graptolite records of Tasmania. After weighing the evidence regarding their reliability, he expressed a conviction that Diplograptus sp. had been found at a locality given by the finder, Mr. Thureau,
openaire   +1 more source

Silurian stratigraphy and paleontology of the Valongo anticline and Arouca-Tamames syncline, Central-Iberian Zone (Portugal and Spain) [PDF]

open access: yes, 2009
2 páginas.-- Comunicación presentada en Time and Life in the Silurian: a multidisciplinary approach, Italy , June 4-11, 2009; (Subcommission on Silurian Stratigraphy Field Meeting 2009).-- Abstract.This work is a contribution to the projects CGL2006 ...
Gutiérrez-Marco, J. C.   +3 more
core  

ESTONIAN GRAPTOLITE ARGILLITES REVISITED: A FUTURE RESOURCE?

open access: yes, 2014
The occurrence of Cambrian to Ordovician organic-rich black shale deposits has been known in Baltoscandia, including Estonia, for a long time. The Estonian graptolite argillite (GA) shows high to very high con- centrations of U (800 ppm), Mo (1000 ppm ...
S. Hade, A. Soesoo
semanticscholar   +1 more source

Sedimentary characteristics and geological significance of outcrop in Wufeng-Longmaxi Formation, Huangying Town, Wulong District, Chongqing

open access: yesYouqicang pingjia yu kaifa, 2022
At present, the Wufeng-Longmaxi Marine high quality shale is the only case that has been commercially exploited in China. Taking Huangying section in Wulong District, Chongqing as an example, the characteristics of sedimentary geochemistry and their ...
HE Xipeng   +7 more
doaj  

Upper Silurian Graptolite Zones [PDF]

open access: yesGeological Magazine, 1945
In the Ludlovian (Silurian) beds in central Wales the graptolites indicate that the lithologically dissimilar Builth and Clun Forest sequences may be correlated.
openaire   +1 more source

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