Zobrazeno 1 - 10
of 22
pro vyhledávání: '"John B. Roen"'
Publikováno v:
Lethaia. 21:417-423
The Devonian plant fossil Protosalvinia (Foerstia) has been examined by solid-state 13C nuclear magnetic resonance spectroscopy (NMR) and pyrolysis-gas chromatography-mass spectrometry (PY-GC-MS). Results of these studies reveal that the chemical str
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f14f2b69933a56eaf2a2a897a7394640
https://doi.org/10.1111/j.1502-3931.1988.tb01772.x
https://doi.org/10.1111/j.1502-3931.1988.tb01772.x
Autor:
John B. Roen
Publikováno v:
Organic Geochemistry. 5:241-254
Black shales of Devonian age in the Appalachian Basin are a unique rock sequence. The high content of organic matter, which imparts the characteristic lithology, has for years attracted considerable interest in the shales as a possible source of ener
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5828210499d6b1620445389c2a6c1902
https://doi.org/10.1016/0146-6380(84)90011-1
https://doi.org/10.1016/0146-6380(84)90011-1
Autor:
John B. Roen
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::246d4e4a5f05274def15212c9cd2e066
https://doi.org/10.3133/ofr80505
https://doi.org/10.3133/ofr80505
The purpose of this cross section, which is one of a series, is to provide a preliminary regional stratigraphic framework and provisional nomenclature as a base for future detailed mapping and geologic analyses of the Devonian black shales. Data from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10dca214912b055d8c765d6f6f108a1e
https://doi.org/10.3133/oc82
https://doi.org/10.3133/oc82
Autor:
John B. Roen, Wallace De Witt
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d86cf4dc7f449db492f490d57239c99
https://doi.org/10.3133/ofr84111
https://doi.org/10.3133/ofr84111
Autor:
John B. Roen, Laure G. Wallace
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb15705cfa1e187041c366f13aaf6ba3
https://doi.org/10.3133/ofr89488
https://doi.org/10.3133/ofr89488
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b0f84f6a9ae8cf40d65684a160de2286
https://doi.org/10.3133/ofr77213
https://doi.org/10.3133/ofr77213
Autor:
G.E. Claypool, J.D. Megeath, John B. Roen, Ronald R. Charpentier, Larry D. Harris, Wallace De Witt, James W. Schmoker, R. F. Mast
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::685caf361cfc1e1447fc83a96d09cf0b
https://doi.org/10.3133/ofr82474
https://doi.org/10.3133/ofr82474
Publikováno v:
Open-File Report.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::69f17e2ae64e1555060a7bdbcb59de61
https://doi.org/10.3133/ofr77840
https://doi.org/10.3133/ofr77840