Zobrazeno 1 - 10
of 32
pro vyhledávání: '"T Helfrich"'
Publikováno v:
The Journal of the Gilded Age and Progressive Era. 20:325-329
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::94ada4d5128bd4e43e93b9104748a331
https://doi.org/10.1017/s1537781421000141
https://doi.org/10.1017/s1537781421000141
Autor:
Joel T. Helfrich
Publikováno v:
Addressing Environmental and Food Justice toward Dismantling the School-to-Prison Pipeline ISBN: 9781137508249
Rochester, New York: America’s first boom town, cuttingly nicknamed Smugtown, can be understood as being comprised of a toxic soup of socio-economic and educational data regarding its urban school district and youth that ought to shock anyone who h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::204c3aad6f22c6246332278546e7c0c9
https://doi.org/10.1057/978-1-137-50822-5_3
https://doi.org/10.1057/978-1-137-50822-5_3
Autor:
Joel T. Helfrich
Publikováno v:
Conservation Biology. 28:883-885
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0df50a340f911c22029a807faf53e96
https://doi.org/10.1111/cobi.12284
https://doi.org/10.1111/cobi.12284
Publikováno v:
International Journal of Coal Geology. 49:177-194
The Upper Hance coal bed in Bell County, eastern Kentucky exhibits considerable variation in depositional setting on a mine scale. Palynology and geochemistry of the coal are examined in order to supplement previous petrographic examinations. The var
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88c668592c411cb13d888d0740416940
https://doi.org/10.1016/s0166-5162(01)00076-3
https://doi.org/10.1016/s0166-5162(01)00076-3
Autor:
Susan M. Rimmer, James C. Hower, Timothy A. Moore, Joan Esterle, Richard L Walton, Charles T. Helfrich
Publikováno v:
International Journal of Coal Geology. 42:159-184
Petrographic and palynological trends in the Blue Gem coal bed (Middle Pennsylvanian Westphalian B, Breathitt Formation), a thin, low-sulfur, low-ash coal in southeastern Kentucky, were studied in order to establish a depositional model for the seam.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9985714b7f15d4dad175e3036cc33879
https://doi.org/10.1016/s0166-5162(99)00038-5
https://doi.org/10.1016/s0166-5162(99)00038-5
Autor:
Stephen O. Moshier, James C. Hower, Anne Raymond, Charles T. Helfrich, Andrew P. de Wet, Sean T. Brennan, Carol B. de Wet
Publikováno v:
Geological Society of America Bulletin. 109:1231-1248
Two cyclothems contain an unusual suite of disrupted fabrics. This study9s interdisciplinary integration of coal maceral and sedimentological information offers significant new interpretations of coal-limestone interchange, both depositionally and di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9c8d9a86ad64ff28463b9f0ac6549de
https://doi.org/10.1130/0016-7606(1997)109<1231:dcacfw>2.3.co
https://doi.org/10.1130/0016-7606(1997)109<1231:dcacfw>2.3.co
Publikováno v:
International Journal of Coal Geology. 26:117-132
The McLeansboro Group (formerly the Sturgis Formation) in the Western Kentucky coal field spans the upper Desmoinesian (Westphalian D) and the Missourian and Virgilian series (Stephanian). Extensive drilling has demonstrated the lateral continuity of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::166dc9758141aef2fa0cc6975dfbfd09
https://doi.org/10.1016/0166-5162(94)90035-3
https://doi.org/10.1016/0166-5162(94)90035-3
Autor:
Joel T. Helfrich
Publikováno v:
Ethics, Place & Environment. 5:23-25
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b19b4f960d825498d50d5f101f613558
https://doi.org/10.1080/13668790220146410
https://doi.org/10.1080/13668790220146410
Publikováno v:
Organic Geochemistry. 18:301-311
The Path Fork coal bed (Breathitt Formation, Middle Pennsylvanian/Westphalian B) on the Pine Mountain thrust sheet in southeastern Kentucky and adjacent portions of Virginia exhibits a lithologic succession which is traceable for about 25 km. Lateral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4414645d9651dfac377ee80685da796e
https://doi.org/10.1016/0146-6380(92)90071-5
https://doi.org/10.1016/0146-6380(92)90071-5