Results 21 to 30 of about 6,810 (263)
Miaolingian (Cambrian) trilobite biostratigraphy and carbon isotope chemostratigraphy in the Tingskullen drill core, Öland, Sweden [PDF]
Estonian Journal of Earth Sciences, 2021 The Cambrian succession of the Tingskullen drill core from northern Ãland comprises Cambrian Series 2 and Miaolingian (Wuliuan Stage) siliciclastic strata.
Per Ahlberg +5 more
doaj +1 more source
On the Wildness of Cambrian Lattices [PDF]
Algebras and Representation Theory, 2018 In this note, we investigate the representation type of the cambrian lattices and some other related lattices. The result is expressed as a very simple trichotomy. When the rank of the underlined Coxeter group is at most 2, the lattices are of finite representation type.
Chapoton, Frédéric, Rognerud, Baptiste
openaire +3 more sources
Geological structure of Usol-Bilir reservoir, south-eastern boarder of the Kureiya Syneclise [PDF]
Нефтегазовая геология: Теория и практика, 2021 In the Cambrian interval, of the sedimentary section cover the junction zone of three large tectonic structures: the Nepa-Botuoba Anteclise, the Katanga Saddle, and the Kureiya Syneclise of the Eastern Siberian petroleum basin, four reservoir areals were
Mar'yanovich Yu.V
doaj +1 more source
Open Geosciences, 2021 The black rock series in the Qiongzhusi Formation contains important geochemical information about the early Cambrian tectonic and ecological environment of the southwestern Yangtze Block.
Liu Hao +8 more
doaj +1 more source
Frontiers in Earth Science, 2022 The Cambrian source rock is a key indicator that will guide future hydrocarbon explorations in ultra-deep strata. Despite its importance, the characteristics of paleotopography on the Precambrian basement and the distribution of source rocks above it ...
Haowei Yuan +10 more
doaj +1 more source
A possible case of inverted lifestyle in a new bivalved arthropod from the Burgess Shale [PDF]
Royal Society Open Science, 2019 The origin of the arthropod carapace, an enlargement of cephalic tergites, can be traced back to the Cambrian period. However, its disparity and evolution are still not fully understood.
Alejandro Izquierdo-López +1 more
doaj +1 more source
A modified trap design for sampling subterranean habitats for central Texas Eurycea salamanders [PDF]
Subterranean BiologyIn this paper, we describe modifications to a sampling technique for surface, stream-dwelling salamanders for use in subterranean settings. Leaf litter bags are an effective and commonly used trap for salamanders, and their construction purposefully ...
Ryan M. Jones +3 more
doaj +3 more sources
A new euarthropod from the Cambrian Stage 4 Guanshan Biota of South China [PDF]
Acta Palaeontologica Polonica, 2022 A new small euarthropod Astutuscaris bispinifer gen. et sp. nov. is described from the early Cambrian Stage 4 Guanshan Biota in Yunnan, China. This new euarthropod possesses a wide head shield, a pair of possible eyes, paired frontalmost appendages ...
DE-GUANG JIAO, KUN-SHENG DU
doaj +1 more source
Camenellan tommotiids from the Cambrian Series 2 of East Antarctica: Biostratigraphy, palaeobiogeography, and systematics [PDF]
Acta Palaeontologica Polonica, 2021 Cambrian Series 2 shelly fossils from thick carbonate successions in East Antarctica have received limited systematic treatment through the 20th century.
Thomas M. Claybourn +5 more
doaj +1 more source