Results 21 to 30 of about 5,124,862 (215)
Ediacaran and Cambrian stratigraphy in Estonia: an updated review [PDF]
Estonian Journal of Earth Sciences, 2017 Previous late Precambrian and Cambrian correlation charts of Estonia, summarizing the regional stratigraphic nomenclature of the 20th century, date back to 1997.
Tõnu Meidla
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Upper lower Cambrian (provisional Cambrian Series 2) trilobites from northwestern Gansu Province, China [PDF]
Estonian Journal of Earth Sciences, 2014 Upper lower Cambrian (provisional Cambrian Series 2) trilobites are described from three sections through the Shuangyingshan Formation in the Beishan area, northwestern Gansu Province, China. The trilobite fauna is dominated by eodiscoid and corynexochid
Jan Bergström† +3 more
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Petroleum Exploration and Development, 2017 The origin and differential accumulation of hydrocarbons in the Cambrian sub-salt dolomite reservoirs in Zhongshen Area were studied based on comprehensive geochemical analysis of core samples, crude oil samples and natural gas samples.
Jizhi ZHANG +5 more
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Shiyou shiyan dizhi, 2021 In recent years, primary hydrocarbon accumulations of Precambrian-Lower Cambrian have caused an increasing attention in the oil and gas explorations worldwide. The Eastern Siberian Basin in Russia, the Oman Basin in the Middle East, and the Sichuan Basin
Gang LI +5 more
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The Malvern Lower Cambrian Strata [PDF]
Nature, 1966 IN a recent communication R. St. John Lambert and D. C. Rex1 imply that the palaeontological evidence is insufficient for any claim to be made that Lower Cambrian strata are exposed in the Malvern Hills. Whereas there is some doubt concerning the presence there of Middle Cambrian rocks, there is little doubt about the existence of Lower Cambrian.
openaire +1 more source
A new bilaterally injured trilobite presents insight into attack patterns of Cambrian predators [PDF]
PeerJ, 2022 Durophagous predation in the Cambrian is typically recorded as malformed shells and trilobites, with rarer evidence in the form of coprolites and shelly gut contents.
Ruiwen Zong, Russell D.C. Bicknell
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Cambrian Archaeological Monographs
, 2022 This collection comprises monographs published by the Cambrian Archaeological Association. Along with it's journal Archaeologia Cambrensis, the Cambrian Archaeological Association has published occasional supplementary volumes on Welsh History and ...
Cambrian Archaeological Association
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Frontiers in Earth Science, 2022 Both Lower Cambrian and Lower Silurian shale are typical of oil-prone kerogen and siliceous composition, but differ in thermal maturities with 3.56% Ro and 2.31% Ro, respectively. In this paper, pore characteristics were explored between these two shales.
Yanan Miao +4 more
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Dizhi lixue xuebaoObjective The organic-rich shales of the Lower Cambrian in South China are characterized by significant thickness and high thermal maturity. Recent explorations have yielded industrial gas flows from the Lower Cambrian shales in the Middle Yangtze ...
CHEN Ke, WANG Yuluo, LU Yanxin, LI Fei
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Controls on gut phosphatisation : the trilobites from the Weeks Formation Lagerstätte (Cambrian; Utah) [PDF]
, 2012 Despite being internal organs, digestive structures are frequently preserved in Cambrian Lagerstätten. However, the reasons for their fossilisation and their biological implications remain to be thoroughly explored.
Hegna, Thomas A. +24 more
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