|
|
|
|
|
Norbert Clauer
Previously published K-Ar dating results of <2 µm illite separates from uranium-hosting and associated barren rocks from Dominique Peter district of the Carswell circular structure in the Athabasca Basin (Canada) were considered to trace four distinct te...
ver más
|
|
|
|
|
|
|
|
|
|
|
Frithjof Bense, Carlos Costa, Sebastián Oriolo, Stefan Löbens, Istvan Dunkl, Klaus Wemmer, Siegfried Siegesmund
Pág. 275 - 306
This paper presents low-temperature thermochronological data and K-Ar fault gouge ages from the Sierra
de San Luis in the Eastern Sierras Pampeanas in order to constrain its low-temperature thermal evolution and exhumation
history. Thermal modelling base...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yuji Orihashi,Jose A. Naranjo,Akihisa Motoki,Hirochika Sumino,Daiji Hirata,Ryo Anma,Keisuke Nagao
Pág. 207 - 224
Twenty-nine K-Ar ages for lavas and juvenile ejecta obtained from Hudson volcano in the southern end of the Southern Volcanic Zone and Lautaro volcano in the northern end of the Austral Volcanic Zone, which are separated by a 350 km-long volcanic gap nea...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ricardo Varela,Ana M. Sato,Miguel A.S. Basei,Oswaldo Siga Jr.
Pág. 265 - 284
Igneous and metamorphic units formed mainly during the Middle Proterozoic and Early Paleozoic times have been distinguished in the Sierra de Umango crystalline basement. These include granitic orthogneisses, a sequence of schists and marbles, amphibolite...
ver más
|
|
|
|
|
|
|
|
|
|
|
Gerhard Wörner,Konrad Hammerschmidt,Friedhelm Henjes-Kunst,Judith Lezaun,Hans Wilke
Pág. 205 - 240
K-Ar and Ar/Ar ages from magmatic rocks of northern Chile (18-22°S) describe duration and extent of the Tertiary and Quaternary magmatic evolution and date major tectonic events in northernmost Chile. This paper summarizes new K-Ar and Ar-Ar mineral and ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mario Vergara,Diego Morata,Rosemary Hickey-Vargas,Leopoldo Lopez-Escobar,Ingrid Beccar
Pág. 23 - 41
Upper Eocene to Middle Miocene volcanic rocks are found in the Colbún area, Linares Precordillera, central Chile (35º35'-36ºS). Based on stratigraphic characteristics, K-Ar and Ar-Ar dating, two different units are recognized: 1-a Lower Unit (Upper Eocen...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ernst Kiefer,Mathias J. Dorr,Hillert Ibbeken,Hans-J. Gotze
Pág. 165 - 185
ABSTRACT. Alluvial fans and their catchments provide joint erosion and sedimentation regions, where exogenic mass transfer can be handled as a finite volume problem. The Arcas Fan in the Andean forearc of Northern Chile, one of the world?s largest alluvi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Francisco Uribe
Pág. 101 - 106
Resumen. En la Cordillera de la Costa de Antofagasta, se ha comprobado la presencia de un pluton granodioritico del Jurasico Superior, atravesado por un enjambre de filones subparalelos entre si, los cuales definen, dentro del cuerpo, una estructura regi...
ver más
|
|
|
|
|
|
|
|
|
|
|
Francisco Camus,Ricardo Soric,Milka Alexandra Skewes
RESUMEN:The El Bronce gold district is located in Central Chile (32°11'S-70°56'W), and contains epithermal polimetallic (Au, Ag, Cu, Pb, Zn) vein deposits. The district has been mined since the end of the 18th century and its estimated production up to t...
ver más
|
|
|
|
|
|