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Publikováno v:
Journal of South American Earth Sciences. 7:167-177
K-Ar and 40Ar/39Ar dating of volcanic rocks from the Maricunga belt of north-central Chile indicate that igneous activity took place throughout most of Miocene time at various places in the 150 by 30 km belt. No migration patterns of volcanism appear
The structural framework of Pahute Mesa, nevada, is dominated by the Silent Canyon caldera complex, a buried, multiple collapse caldera complex. Using the boundary surface between low density Tertiary volcanogenic rocks and denser granitic and weakly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0dccb4b3b4f2e6cab1234610d52c9bbc
https://doi.org/10.2172/15123
https://doi.org/10.2172/15123
Ground-water flow through the region south and west of Frenchman Flat, in the Ash Meadows subbasin of the Death Valley ground-water flow system, is controlled mostly by faults which arrange the distribution of permeable and impermeable rocks. In addi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::42815ec0e5162098ac947366e5626ced
https://doi.org/10.2172/1713
https://doi.org/10.2172/1713
Publikováno v:
Open-File Report.
Autor:
E.H. McKee
Publikováno v:
Open-File Report.
Ground water flow through the region south and west of Frenchman Flat, in the Ash Meadows subbasin of the Death Valley ground water flow system, is controlled mostly by the distribution of permeable and impermeable rocks. Geologic structures such as
Autor:
C.G. Cunningham, Hugo Aparicio N., Fernando Murillo S., Nestor C. Jimenez, J. L. Lizeca B., E.H. McKee, G.E. Ericksen, Tavera V. Franz
Publikováno v:
Open-File Report.
Publikováno v:
Marine Geology. 54:M1-M8
New K-Ar ages for 13 samples of basalt, gabbro, wehrlite, and trachyandesite drilled from the Brazilian continental shelf and coastline yield information about the timing of the opening of the South Atlantic and the nature of the crust seaward from t
Publikováno v:
Journal of South American Earth Sciences. 2:343-349
We evaluated 193 K-Ar ages (10 newly determined) of basaltic and differentiated rocks of the Serra Geral (Parana) flood-basalt province for indications of magmatism occurring systematically with progressive rifting and complete separation ( ≈130-10