Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Walter David Keller"'
Autor:
Walter David Keller
Publikováno v:
Journal of Geological Education. 40:307-309
The most valuable thing we can teach in geology courses is the joy of learning and the pleasure of continuing to enjoy learning about the earth. For geology majors, I advocate the use of the logical (scientific) approach; for the equally important mu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ca29a71c30b96b6557d89af20d4f843e
https://doi.org/10.5408/0022-1368-40.4.307
https://doi.org/10.5408/0022-1368-40.4.307
Autor:
Walter David Keller
Publikováno v:
Journal of Sedimentary Research. 23:93-105
The argillaceous rocks in the type section of the Morrison formation as described by Waldschmidt and LeRoy may be subdivided on a basis of their most abundant clay mineral. Kaolinite and illite clay mineral zones coincide with the upper unit subdivis
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97ecf2cf56e23133d532d96ee9653b36
https://doi.org/10.2110/jsr.23.93
https://doi.org/10.2110/jsr.23.93
Autor:
Chuen Pu Ting, Walter David Keller
Publikováno v:
Journal of Sedimentary Research. 20:123-132
A specimen of the Perry Farm shale collected in Ray County, Missouri, was found to be a calcareous, micaceous sandy shale. Lamination is due to the essentially parallel orientation of platy minerals; micas, chlorite, illite, and kaolinite. Quartz, po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac5c4896a26dc194de14db4a309fa149
https://doi.org/10.1306/d42693c8-2b26-11d7-8648000102c1865d
https://doi.org/10.1306/d42693c8-2b26-11d7-8648000102c1865d
Publikováno v:
Economic Geology. 50:469-494
Bleaching clay deposits of the Sanders-Defiance Plateau district, northeastern Arizona, are an important commercial source of activated bentonite. High-grade deposits show a definite association with geologic structure, distribution of the host forma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3660a62511da9730a2f7d9c0e2ce6620
https://doi.org/10.2113/gsecongeo.50.5.469
https://doi.org/10.2113/gsecongeo.50.5.469
Autor:
Walter David Keller
Publikováno v:
American Journal of Science. :65-70
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ba1a6334e381135a6fbe027dfe5430a
https://doi.org/10.2475/ajs.s5-18.103.65
https://doi.org/10.2475/ajs.s5-18.103.65
Autor:
Walter David Keller
Publikováno v:
Economic Geology. 44:451-454
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9c54d084c737354580bd17bbf725e9f8
https://doi.org/10.2113/gsecongeo.44.5.451
https://doi.org/10.2113/gsecongeo.44.5.451
Autor:
Walter David Keller
Publikováno v:
Journal of Sedimentary Research. 22:70-82
Analcime has been determined to be a prominent and characteristic mineral in the Popo Agie "beds," a member of the Chugwater formation. It is responsible for the distinctive lithology and physical properties which set out the Popo Agie from other wes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b07069d6bc17e63d10d72d745514426
https://doi.org/10.1306/d42694c7-2b26-11d7-8648000102c1865d
https://doi.org/10.1306/d42694c7-2b26-11d7-8648000102c1865d
Publikováno v:
American Journal of Science. 250:453-471
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e395656a3a89c6440db0485fec98a65
https://doi.org/10.2475/ajs.250.6.453
https://doi.org/10.2475/ajs.250.6.453
Publikováno v:
American Journal of Science. 252:87-98
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5523e140571135a09d3547885a434ba
https://doi.org/10.2475/ajs.252.2.87
https://doi.org/10.2475/ajs.252.2.87
Publikováno v:
American Journal of Science. 250:594-608
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c546b601866c36abbea6cb534b706082
https://doi.org/10.2475/ajs.250.8.594
https://doi.org/10.2475/ajs.250.8.594