Casas Velhas Formation

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Journal Article
Published: 01 May 2010
Journal of the Geological Society (2010) 167 (3): 519-538.
..., and (if possible or applicable) its depth of formation. (2) Lava deltas: these are formed when subaerial lava flows reach the sea, generating pillow-lavas and hyaloclastite breccia. In these sequences the boundary between the flat-lying lavas and steep-dipping breccia and pillow foresets, the passage zone...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2012
GSA Bulletin (2012) 124 (5-6): 800-816.
...). On a geological time scale, there is evidence that relief disappears relatively quickly (e.g., Casas-Sainz and Cortes-Gracia, 2002 ; Japsen et al., 2009a ). The outlier of the Sabiá Formation within the Recôncavo-Tucano-Jatobá Rift testifies to Miocene burial, but no remnants of such a cover have—to our...
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Journal Article
Journal: Economic Geology
Published: 01 May 2004
Economic Geology (2004) 99 (3): 611-624.
.... These solutions were also likely responsible for the initial oxidation of the iron formations and the development of hematite I. Subsequent uplifted hot basement rocks or post-tectonic plutons were probable heat sources for the regional metamorphism and development of a granoblastic fabric of hematite II grains...
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Journal Article
Published: 01 January 2015
Journal of the Geological Society (2015) 172 (1): 45-61.
... previously in an accretionary prism. Below this unit, the Lower Parautochthon is a less pervasively deformed tectonic slice including two lithostratigraphic units (Travanca and Vila Chã formations) composed of Culm-type synorogenic low-grade metasediments deposited in a tectonic trench located between...
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Journal Article
Published: 12 December 2017
Journal of Sedimentary Research (2017) 87 (12): 1285-1313.
... hydrothermal vents in the rift section of central Campos Basin. Although lacking sampling of the most affected intervals, areas with intense dissolution were interpreted in the well logs and formation tests as probably related to hypogenic hydrothermal karst (cf. Dublyansky 1995 ; Heward et al. 2000...
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Series: Reviews in Economic Geology
Published: 01 January 2008
DOI: 10.5382/Rev.15.09
EISBN: 9781629490229
... syncline (MS) with distribution of dolomitic itabirite (Cauê Formation) and possible fluid path during mineralization indicated. Iron deposits: AB = Abóboras, BO = Bocaina, AC = Águas Claras, IT = Itatiaiuçu, ES = Esperança, CF = Córrego do Feijão, CM = Capitão do Mato, GA = Gama, CO = Córrego do Meio, CX...
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Journal Article
Journal: Economic Geology
Published: 01 June 2017
Economic Geology (2017) 112 (4): 941-982.
... the footwall. The significant chemical influence and importance of country-rock lithologies as a possible elemental source, for example, must be taken into account when interpreting whole-rock geochemical data and investigating an itabirite-/banded iron formation-hosted iron ore system. The Moeda quartzite...
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Journal Article
Journal: Lithosphere
Published: 30 June 2017
Lithosphere (2017) 9 (5): 726-744.
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