Zobrazeno 1 - 10
of 184
pro vyhledávání: '"Coal ball"'
Publikováno v:
Applications in Plant Sciences, Vol 11, Iss 6, Pp n/a-n/a (2023)
Abstract Coal balls, in which fossil plants are preserved in permineralized peat deposits, have widely been described from coal deposits representing the tropical forest of the Carboniferous. Coal ball preparation techniques have evolved over the pas
Externí odkaz:
https://doaj.org/article/89cc3b5145ff4f62b7955bef63efc7ea
Autor:
Bashab N. Mahanta, Tapos Kr. Goswami, K. Sekhose, Raman Kumar, V. Vitso, Ranjan Kr. Sarmah, Amit Kumar
Publikováno v:
Journal of Sedimentary Environments
An attempt is made to study the composition of the carbonate minerals and silica in the faunal coal balls of Lower Gondwana Group of rocks of Arunachal Himalaya using Electron Probe Micro Analyser (EPMA) and Raman Spectrometer (RS). It is observed th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bde0a041d1a2782b3265b457baf63690
https://doi.org/10.1007/s43217-020-00042-3
https://doi.org/10.1007/s43217-020-00042-3
Publikováno v:
International Journal of Plant Sciences, 2011 Jun 01. 172(5), 725-734.
Externí odkaz:
https://www.jstor.org/stable/10.1086/659454
Autor:
Gar W. Rothwell, Ruth A. Stockey
Publikováno v:
American Journal of Botany. 107:1072-1093
PREMISE Exceptional anatomical preservation of a fossil araucarian seed cone from a marine carbonate concretion from Vancouver Island, British Columbia, Canada provides unusually complete evidence for cone structure including seeds, megagametophytes,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b3e7c61445eb828c0a237ed8239bb6f5
https://doi.org/10.1002/ajb2.1505
https://doi.org/10.1002/ajb2.1505
Publikováno v:
Geologija, Vol 54, Iss 2, Pp 161-168 (2011)
The main objective of this study was to identify and characterise a specimen of presumed meteorite, supposedly found in 1947 while crushing gangue material from an open-pit coal mining site in Trbovlje. The presumed meteorite was characterised accord
Externí odkaz:
https://doaj.org/article/dec142525fcb40a288bc3f2241dc25e5
Publikováno v:
International Journal of Plant Sciences, 2003 Jan . 164(1), 89-112.
Externí odkaz:
https://www.jstor.org/stable/10.1086/344558
The pedogenic formation of coal balls by CO2 degassing through the rootlets of arborescent lycopsids
Autor:
Dana L. Royer, Daniel O. Breecker
Publikováno v:
American Journal of Science. 319:529-548
Coal balls are calcium carbonate accumulations that permineralized peat in paleotropical Permo-Carboniferous (∼320–250 Ma) mires. The formation of coal balls has been debated for over a century yet a widely applicable model is lacking. Two observ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e694ef2a8d49657c2d8a1f61bf4a2731
https://doi.org/10.2475/07.2019.01
https://doi.org/10.2475/07.2019.01
Publikováno v:
International Journal of Coal Geology. 206:65-79
From the perspective of Phanerozoic time, coal balls are rare, apparently limited to a 24 m.y. interval (323–299 Ma) in the Pennsylvanian and earliest Permian. Yet within this interval, coal balls occur in many coals. Approximately 82 transgressive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b287b7fd5bdc54f621eecd86880dadcd
https://doi.org/10.1016/j.coal.2019.01.012
https://doi.org/10.1016/j.coal.2019.01.012
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf50e715bc47a8279c522afc7eca41f5
https://doi.org/10.1130/abs/2020am-359684
https://doi.org/10.1130/abs/2020am-359684
Publikováno v:
Geological Society of America Abstracts with Programs.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c61d3b02ae108954cc17851695a133bb
https://doi.org/10.1130/abs/2020am-358074
https://doi.org/10.1130/abs/2020am-358074