The Geologic Features of the Occurrence of Copper in North America [PDF]
, 1933 Copper is of such widespread natural occurrence in North America and there are so few metal-mining districts that have not contributed to its production that it is obviously necessary in any brief general treatment of the geology of the copper deposits ...
Ransome, F. L.
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Evaluation of existing knowledge of the tectonic history and lithospheric structure of South America [PDF]
While data is available on the lithospheric and crustal structure of the Andes region of South America, there is limited knowledge of these aspects of the eastern portion of the continent.
Keller, G. R., Lidiak, E. G.
core +1 more source
Palynofloras of the Chigua (Devonian) and Malimán (Mississippian) formations from the Precordillera Argentina: age, correlation and discussion of the D/C boundary [PDF]
, 2009 Se presenta el análisis cualitativo y cuantitativo de las asociaciones palinológicas obtenidas de las formaciones Chigua (Devónico) y Malimán (Mississippiano), aflorantes en la Cuenca Río Blanco, Precordillera Argentina.
Azcuy, Carlos Leopoldo +2 more
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A provisional Radiolaria biostratigraphy, Late Devonian through Late Permian [PDF]
Open-File Report, 1980 Brian K. Holdsworth +1 more
openaire +1 more source
, 2007 to cite the paper EPISODES Volume: 30 Issue: 3 Pages: 162-186 Published: September, 2007International audienceChinese East Tianshan is a key area for understanding the Paleozoic accretion of the southern Central Asian Orogenic Belt.
Charvet, Jacques +2 more
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A preliminary Scanning Electron Microscope (SEM) study of magnetite surface microtextures from the Wahianoa moraines, Mt Ruapehu, New Zealand. [PDF]
, 2010 Scanning electron microscope (SEM) of quartz micro‐textures has routinely been used to identify the depositional environment of sediments in areas of former ice‐sheet glaciation.
Brook, Martin S, Mandolla, Stephanie
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Keraphyton gen. nov., a new Late Devonian fern-like plant from Australia. [PDF]
PeerJ, 2020 Champreux A +2 more
europepmc +1 more source
First African thylacocephalans from the Famennian of Morocco and their role in Late Devonian food webs. [PDF]
Sci Rep, 2020 Jobbins M, Haug C, Klug C.
europepmc +1 more source
Anchoring the Late Devonian mass extinction in absolute time by integrating climatic controls and radio-isotopic dating. [PDF]
Sci Rep, 2020 Da Silva AC +7 more
europepmc +1 more source