Results 61 to 70 of about 308 (178)

New biostratigraphic and chemostratigraphic data from the Chicotte Formation (Llandovery, Anticosti Island, Laurentia) compared with the Viki core (Estonia, Baltica) [PDF]

Estonian Journal of Earth Sciences, 2009
Due to the lack of biostratigraphically useful graptolites in the crinoidal and reefal Chicotte Formation on Anticosti Island (Québec, Canada), the precise chronostratigraphic position of the formation is not known. New stable carbon isotope and conodont
Munnecke, Axel, Männik, Peep
doaj  

Correlation and biostratigraphy of the Kortrijk (Sint-Antonius) and Kortrijk (Lust) boreholes (early Silurian, Belgium)

Carnets de Géologie, 2005
Since their drilling, respectively in 1961 and 1971, the 83W421 Kortrijk (Sint-Antonius) and 83W44 Kortrijk (Lust brewery) boreholes have been studied rather extensively for biostratigraphical information.
Wauthoz Bastien
doaj  

Graptolites [PDF]

Geological Magazine
Jan Zalasiewicz, Mark Williams, Adrian W.A. Rushton   +2 more
  +6 more sources

Silurian (Llandovery) monograptids from the Vargas Peña Formation (Paraná Basin, Eastern Paraguay)

Geologica Acta, 2009
The Itacurubí Group is a siliciclastic Silurian sequence exposed in eastern Paraguay (Paraná Basin). It includes from bottom to top the Eusebio Ayala, Vargas Peña and Cariy formations.
N.J. URIZ, M.B. ALFARO, J.C. GALEANO INCHAUSTI   +2 more
doaj  

High resolution conodont-graptolite biostratigraphy in the Middle-Upper Ordovician of the Sierra de La Invernada Formation (Central Precordillera, Argentina)

Geologica Acta, 2009
Outcrops on the western slope of the La Invernada Range, San Juan Precordillera (W Argentina), were surveyed for lithofacial analysis and graptolite-conodont high resolution biostratigraphy.
G. ORTEGA, G.L. ALBANESI, A.L. BANCHIG, G.L. PERALTA   +3 more
doaj  

New late Tremadocian (Early Ordovician) conodont and graptolite records from the southern South American Gondwana margin (Eastern Cordillera, Argentina)

Geologica Acta, 2009
New late Tremadocian (Early Ordovician) conodont and graptolite faunas from the eastern and central belts of the Eastern Cordillera (Jujuy Province, northwestern Argentina) are reported.
G.L. ALBANESI, G. ORTEGA
doaj  

I.—The Graptolites of the Skiddaw Series, etc. II.—On the Classification of Graptolites [PDF]

Geological Magazine
n ...
openaire   +1 more source

Organic petrology and geochemistry of the Upper Ordovician-Lower Silurian Renheqiao Formation shales of the Baoshan Block, western Yunnan, China

International Journal of Coal Science & Technology
Lower Paleozoic black shales are important source rocks worldwide. The Upper Ordovician-Lower Silurian Renheqiao Formation of the Baoshan Block is a low-maturity equivalent of the Wufeng-Longmaxi (WF-LMX) Shale of the Sichuan Basin.
Yinlong Wang, Detian Yan, Bei Liu, Haijiao Fu, Qingling Jiang, Yin Yuan, Hui Tian   +6 more
doaj   +1 more source

Identifying Organic Matter (OM) Types and Characterizing OM Pores in the Wufeng-Longmaxi Shales. [PDF]

ACS Omega, 2022
Xie G, Hao W.
europepmc   +1 more source

Victorian Graptolites: Part II. The Graptolites of the Lancefield Beds

, 1899
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
openaire   +2 more sources