I specialize in Laser Ablation ICP-MS applications, with special emphasis in isotopes and trace element geochemistry applied to metamorphic, igneous and hydrothermal systems.Recent efforts have been directed at developing reference materials for Laser Ablation ICP-MS analyses either for U-Pb isotopes (xenotime, apatite, zircon and monazites) or B (tourmalines) and Trace elements such as metallic minerals.Other research interests revolve around the evolution of the continental crust and complementary depleted mantle from the beginnings of the Earth through to the present day. I am also investigating the evolution of intracratonic basins using accessory minerals to provenance ice coverage. In addition, I have projects investigating the tectonics of different terrains in South America and Africa.
Diversos corpos plutônicos alcalinos de alto potássio paleoproterozoicos ocorrem no embasamento d... more Diversos corpos plutônicos alcalinos de alto potássio paleoproterozoicos ocorrem no embasamento do cráton São Francisco, bem como no embasamento dos orógenos que o bordejam. Localizado no bordo oeste do cráton São Francisco, o bloco Itacambira-Monte Azul integra o embasamento do orógeno Araçuaí, em partes retrabalhado pelo evento tectonometamórfico Brasiliano. Nesse bloco, os plutonitos Paciência, Morro do Quilombo e Serra Branca, constituídos de rochas alcalinas, são englobados na Suíte Paciência. Os resultados petrográficos para a Suíte Paciência mostram o predomínio de monzonitos e sienitos, equigranulares a porfiríticos, com ocorrência de enclaves máficos. As análises químicas indicam altas concentrações de álcalis, bem como o enriquecimento de óxidos ferromagnesianos e alto Mg# (número de magnésio). Essas rochas são dominantemente metaluminosas, alcalinas a alcalino-cálcicas e magnesianas, enriquecidas em Ba, Sr e Rb e depletadas em Nb, P, Ti e em elementos incompatíveis. Mostr...
Our results from seismic anisotropy analyses reveal for the first time the complex spatial variab... more Our results from seismic anisotropy analyses reveal for the first time the complex spatial variability of the characteristics of subsurface tectonic structures associated with ridge propagation. The significance lies in the fact that these variations are found at a locality with few lineaments or fissures at seafloor level. The overlap region between mid-ocean ridge segments at 9°N on the East
The Quadril atero Ferrífero is a metallogenic district (Au, Fe, Mn) located at the southernmost e... more The Quadril atero Ferrífero is a metallogenic district (Au, Fe, Mn) located at the southernmost end of the S~ao Francisco craton in eastern Brazil. In this region, a supracrustal assemblage composed of Archean greenstone and overlying NeoarcheanePaleoproterozoic sedimentary rocks occur in elongated keels bordering domal bodies of Archean gneisses and granites. The tectonomagmatic evolution of the Quadril atero Ferrífero began in the Paleoarchean with the formation of continental crust between 3500 and 3200 Ma. Although this crust is today poorly preserved, its existence is attested to by the occurrence of detrital zircon crystals with Paleoarchean age in the supracrustal rocks. Most of the crystalline basement, which is composed of banded gneisses intruded by leucogranitic dikes and weakly foliated granites, formed during three major magmatic events: Rio das Velhas I (2920e2850 Ma), Rio das Velhas II (2800e2760 Ma) and Mamona (2760e2680 Ma). The Rio das Velhas II and Mamona events r...
... 2). Over much of the core of the dome, the volcano-sedimen-tary sequence forms volumetrically... more ... 2). Over much of the core of the dome, the volcano-sedimen-tary sequence forms volumetrically minor rafts within large, heterogeneous tonalite-trondhjemite-granodiorite intrusive bodies (Stepto, 1990; Flowers et al., 2003; Lana et al., 2004). ...
... South African Journal of Geology, 107, 291–314. ↵ Lana, C., Gibson, RL, Reimold, WU and Koebe... more ... South African Journal of Geology, 107, 291–314. ↵ Lana, C., Gibson, RL, Reimold, WU and Koeberl, C. (2004). ... Transactions of the Geological Society of South Africa, 47, 183–196. ↵ Moser, DE, Flowers, RM and Hart, RJ (2001). ...
... Search GO. Advanced ». Institution: Google Indexer; Sign In as Member / Individual. User Name... more ... Search GO. Advanced ». Institution: Google Indexer; Sign In as Member / Individual. User Name Password Sign In. ... Campos-Enriquez JO,; Chavez-Garcia FJ,; Cruz H.,; Acosta-Chang JG,; Marsui T.,; Arzate JA,; Unsworth MJ,; Ramos-Lopez J. 2004, Shallow crustal structure of ...
The 40-km-wide Araguainha structure is the largest and best-exposed complex impact crater in Sout... more The 40-km-wide Araguainha structure is the largest and best-exposed complex impact crater in South America. It was excavated in flat-lying sediments of the intracratonic Paraná Basin, where target rocks are well exposed and have remained undeformed since the impact event ca. ...
Diversos corpos plutônicos alcalinos de alto potássio paleoproterozoicos ocorrem no embasamento d... more Diversos corpos plutônicos alcalinos de alto potássio paleoproterozoicos ocorrem no embasamento do cráton São Francisco, bem como no embasamento dos orógenos que o bordejam. Localizado no bordo oeste do cráton São Francisco, o bloco Itacambira-Monte Azul integra o embasamento do orógeno Araçuaí, em partes retrabalhado pelo evento tectonometamórfico Brasiliano. Nesse bloco, os plutonitos Paciência, Morro do Quilombo e Serra Branca, constituídos de rochas alcalinas, são englobados na Suíte Paciência. Os resultados petrográficos para a Suíte Paciência mostram o predomínio de monzonitos e sienitos, equigranulares a porfiríticos, com ocorrência de enclaves máficos. As análises químicas indicam altas concentrações de álcalis, bem como o enriquecimento de óxidos ferromagnesianos e alto Mg# (número de magnésio). Essas rochas são dominantemente metaluminosas, alcalinas a alcalino-cálcicas e magnesianas, enriquecidas em Ba, Sr e Rb e depletadas em Nb, P, Ti e em elementos incompatíveis. Mostr...
Our results from seismic anisotropy analyses reveal for the first time the complex spatial variab... more Our results from seismic anisotropy analyses reveal for the first time the complex spatial variability of the characteristics of subsurface tectonic structures associated with ridge propagation. The significance lies in the fact that these variations are found at a locality with few lineaments or fissures at seafloor level. The overlap region between mid-ocean ridge segments at 9°N on the East
The Quadril atero Ferrífero is a metallogenic district (Au, Fe, Mn) located at the southernmost e... more The Quadril atero Ferrífero is a metallogenic district (Au, Fe, Mn) located at the southernmost end of the S~ao Francisco craton in eastern Brazil. In this region, a supracrustal assemblage composed of Archean greenstone and overlying NeoarcheanePaleoproterozoic sedimentary rocks occur in elongated keels bordering domal bodies of Archean gneisses and granites. The tectonomagmatic evolution of the Quadril atero Ferrífero began in the Paleoarchean with the formation of continental crust between 3500 and 3200 Ma. Although this crust is today poorly preserved, its existence is attested to by the occurrence of detrital zircon crystals with Paleoarchean age in the supracrustal rocks. Most of the crystalline basement, which is composed of banded gneisses intruded by leucogranitic dikes and weakly foliated granites, formed during three major magmatic events: Rio das Velhas I (2920e2850 Ma), Rio das Velhas II (2800e2760 Ma) and Mamona (2760e2680 Ma). The Rio das Velhas II and Mamona events r...
... 2). Over much of the core of the dome, the volcano-sedimen-tary sequence forms volumetrically... more ... 2). Over much of the core of the dome, the volcano-sedimen-tary sequence forms volumetrically minor rafts within large, heterogeneous tonalite-trondhjemite-granodiorite intrusive bodies (Stepto, 1990; Flowers et al., 2003; Lana et al., 2004). ...
... South African Journal of Geology, 107, 291–314. ↵ Lana, C., Gibson, RL, Reimold, WU and Koebe... more ... South African Journal of Geology, 107, 291–314. ↵ Lana, C., Gibson, RL, Reimold, WU and Koeberl, C. (2004). ... Transactions of the Geological Society of South Africa, 47, 183–196. ↵ Moser, DE, Flowers, RM and Hart, RJ (2001). ...
... Search GO. Advanced ». Institution: Google Indexer; Sign In as Member / Individual. User Name... more ... Search GO. Advanced ». Institution: Google Indexer; Sign In as Member / Individual. User Name Password Sign In. ... Campos-Enriquez JO,; Chavez-Garcia FJ,; Cruz H.,; Acosta-Chang JG,; Marsui T.,; Arzate JA,; Unsworth MJ,; Ramos-Lopez J. 2004, Shallow crustal structure of ...
The 40-km-wide Araguainha structure is the largest and best-exposed complex impact crater in Sout... more The 40-km-wide Araguainha structure is the largest and best-exposed complex impact crater in South America. It was excavated in flat-lying sediments of the intracratonic Paraná Basin, where target rocks are well exposed and have remained undeformed since the impact event ca. ...
Uploads
Papers by Cris Lana