Zobrazeno 1 - 8
of 8
pro vyhledávání: '"J.A. PROENZA FERNANDEZ"'
Publikováno v:
Geologica Acta, Vol 9, Iss 3-4 (2011)
The Greater Antilles host some of the world’s most important deposits of bauxite and lateritic nickel as well as significant resources of gold and silver, copper, zinc, manganese, cobalt and chromium. Beginning in Jurassic time, sedimentary exhalat
Externí odkaz:
https://doaj.org/article/0167425ce2bf4a59864e7023411ecce8
Publikováno v:
Geologica Acta, Vol 9, Iss 3-4 (2011)
The Monte del Estado massif is the largest and northernmost serpentinized peridotite belt in southwest Puerto Rico. It is mainly composed of spinel lherzolite and minor harzburgite with variable clinopyroxene modal abundances. Mineral and whole rock
Externí odkaz:
https://doaj.org/article/36de1b303bc14d1e92914911aa289e11
Publikováno v:
Geologica Acta, Vol 9, Iss 3-4 (2011)
A variety of metaultramafic (serpentinite) rocks in La Corea mélange, Sierra de Cristal, eastern Cuba, show differences in chemical, textural and mineralogical characteristics demonstrating a variety of protoliths. The mélange originated during the
Externí odkaz:
https://doaj.org/article/9fa9c328b87a4777b2e63068537c523e
Publikováno v:
Geologica Acta, Vol 9, Iss 3-4 (2011)
Externí odkaz:
https://doaj.org/article/26d9ef4cd364463582330b3bbe9d7ba9
Autor:
F. ZACCARINI, G. GARUTI, J.A. PROENZA FERNANDEZ, L. CAMPOS, O.A.R. THALHAMMER, T. AIGLSPERGER, J.F. LEWIS
Publikováno v:
Geologica Acta, Vol 9, Iss 3-4 (2011)
Chromitites associated with strongly altered peridotite from six distinct localities in the Santa Elena ultramafic nappe (Costa Rica) have been investigated for the first time. Santa Elena chromitites commonly display a compositional variation from e
Externí odkaz:
https://doaj.org/article/18a03f893bec466a87c2bbad4ad5e782
Publikováno v:
Geologica Acta, Vol 7, Iss 4 (2009)
Podiform chromitite bodies occur in highly serpentinized peridotites at Dobromirtsi Ultramafic Massif (Rhodope Mountains, southeastern Bulgaria). The ultramafic body is believed to represent a fragment of Palaeozoic ophiolite mantle. The ophiolite se
Externí odkaz:
https://doaj.org/article/d771b891c98e41c18c9bfff3e5a59f03
Publikováno v:
Geologica Acta, Vol 4, Iss 1-2 (2006)
Ultramafic rocks, mainly serpentinized peridotites of mantle origin, are mostly associated with the ophiolites of Mesozoic age that occur in belts along three of the margins of the Caribbean plate. The most extensive exposures are in Cuba. The ultram
Externí odkaz:
https://doaj.org/article/d914682cfa364435ba379e923895d789
Autor:
J.A. PROENZA FERNÁNDEZ, R. DÍAZ-MARTÍNEZ, A. IRIONDO, C. MARCHESI, Joan-Carles Melgarejo i Draper, F. GERVILLA LINARES, C. J. GARRIDO MARÍN, A. RODRÍGUEZ VEGA, J. A. BLANCO-MORENO, R. LOZANO-SANTACRUZ
Publikováno v:
Geologica Acta, Vol 4, Iss 1-2 (2006)
The Téneme Formation is located in the Mayarí-Cristal ophiolitic massif and represents one of the three Cretaceous volcanic Formations established in northeastern Cuba. Téneme volcanics are cut by small bodies of 89.70 ± 0.50 Ma quarz-diorite roc
Externí odkaz:
https://doaj.org/article/164ce63d9d5d4750b13d726cad5990c6