Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Christopher Wnuk"'
Autor:
Christopher Wnuk
Publikováno v:
Journal of Asian Earth Sciences: X, Vol 12, Iss , Pp 100185- (2024)
Coal mining is critical to the functioning of the current Afghan economy providing jobs, tax revenue, and foreign exchange. Taxes on coal may constitute the Taliban Government’s single largest source of operating income. Prior to the start of minin
Externí odkaz:
https://doaj.org/article/8bb705e36e6844c4a0cace3cfb26e480
Autor:
Christopher Wnuk
Publikováno v:
Earth-Science Reviews. 235:104237
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c6fc5740d30ea6f883feb0c7774a7899
https://doi.org/10.1016/j.earscirev.2022.104237
https://doi.org/10.1016/j.earscirev.2022.104237
Autor:
Christopher Wnuk
Publikováno v:
International Geology Review. 58:321-341
Coal exploration in Afghanistan has focused exclusively on expanding the boundaries of the known Jurassic coal deposits. The systematic stratigraphic and sedimentologic studies needed to locate and characterize new prospects in other parts of the cou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9da23d2aeadef8f5f8833579b8d2861e
https://doi.org/10.1080/00206814.2015.1071209
https://doi.org/10.1080/00206814.2015.1071209
Autor:
Mark H. Scheihing, Christopher Wnuk
Publikováno v:
International Journal of Coal Geology. 83:87-90
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56c13cac97a8d5587766855f4fb55f9f
https://doi.org/10.1016/j.coal.2009.05.002
https://doi.org/10.1016/j.coal.2009.05.002
Autor:
Christopher Wnuk
Publikováno v:
Review of Palaeobotany and Palynology. 90:5-40
Phytogeographic reconstructions have been published for most Paleozoic series since the Přidoli, but there have been few attempts to synthesize this data into a comprehensive review of the characteristics and causes of the changing phytogeographic p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98005e3809c4a9b417baf682d446343a
https://doi.org/10.1016/0034-6667(95)00022-4
https://doi.org/10.1016/0034-6667(95)00022-4
Autor:
Christopher Wnuk, John O. Maberry
Publikováno v:
Journal of Paleontology. 64:440-450
Enigmatic tubular trace fossils up to eight meters long occur in the Lower Pennsylvanian Middlesboro Member of the Lee Formation. Two morphotypes occur: type 1 trace fossils are plain, smooth, vertical, nonbranching, parallel-walled, tubular structur
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::68c78971ab288c4ab1625b6841670742
https://doi.org/10.1017/s0022336000018679
https://doi.org/10.1017/s0022336000018679
Publikováno v:
Review of Palaeobotany and Palynology. 90:1-3
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36e764916d5705fc45203b83dc354480
https://doi.org/10.1016/0034-6667(95)00021-6
https://doi.org/10.1016/0034-6667(95)00021-6
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0189f3d91a65cd1f075f6112660b4e0e
https://doi.org/10.3133/ofr93256
https://doi.org/10.3133/ofr93256
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc1a7f54667b4cc24b1d0d16afe7798a
https://doi.org/10.3133/ofr93255
https://doi.org/10.3133/ofr93255
Autor:
Suroor A. Khan, Christopher Wnuk, J.R. SanFilipo, A.H. Chandio, Mohammad Fariduddin, S.F. Fatmi
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a83234e7cda8a4781cebb1fcba99010a
https://doi.org/10.3133/ofr92281
https://doi.org/10.3133/ofr92281