Results 61 to 70 of about 282 (159)

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  

L'ontogenese des graptolites

Bulletin de la Société Géologique de France, 1959
Abstract Traces the ontogenetic development of graptolites, reporting details of the various growth stages of a graptolite colony.
openaire   +1 more source

Tasmanian graptolite record.

Papers 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

Accumulation conditions and exploration potential of Wufeng-Longmaxi Formations shale gas in Wuxi area, Northeastern Sichuan Basin, China

Journal of Natural Gas Geoscience, 2017
Wufeng-Longmaxi Formations shale gas is a new exploration field in Wuxi area, Sichuan Basin, China. Some geological parameters related to shale gas evaluation of the new exploration wells in Wuxi area have been studied, including shale reservoir, gas ...
Wei Wu, Xuewen Shi, Jia Liu, Du Li, Jun Xie, Shengxian Zhao, Chunhai Ji, Ying Hu, Yanbo Guo   +8 more
doaj   +1 more source

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  

Upper Silurian Graptolite Zones [PDF]

Geological 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

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

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

The Liexi fauna: a new Lagerstätte from the Lower Ordovician of South China. [PDF]

Proc Biol Sci, 2022
Fang X, Mao Y, Liu Q, Yuan W, Chen Z, Wu R, Li L, Zhang Y, Ma J, Wang W, Zhan R, Peng S, Zhang Y, Huang D.   +13 more
europepmc   +1 more source

Double-helical macrostructure aids the passive movement of extinctive graptolites (Dicellograptus) revealed by CFD simulation

Swiss Journal of Palaeontology
Understanding how marine organisms move in the water column is critical for comprehending their palaeoecology and palaeobiogeography. However, interpreting the locomotion of extinct invertebrates can be problematic and difficult because of the lack of ...
Shijia Gao, Jingqiang Tan, Wenhui Wang
doaj   +1 more source