8 documents found, page 1 of 1

Evidence for Neoproterozoic terrane accretion in the central Borborema Province...

The Borborema Province in NE Brazil is part of a large Neoproterozoic orogenic system related to the assembly of West Gondwana. Its evolution is contentious, due to the superposition of events that overprinted former records. We present a compilation of geological, isotopic (U-Pb detrital zircon and whole-rock Sm-Nd), and geophysical data that support a terrane accretion model for the Transversal subprovince (c...

Architecture of the intracontinental Jaibaras Rift, Brazil, based on geophysica...

Qualitative and quantitative integration and interpretation of magnetic, gravity and magnetotelluric data help to determine the internal architecture of the Jaibaras rift, and allow assessing the evolution of the Jaibaras Rift within the Precambrian crystalline basement of Borborema Province, NE Brazil. This was achieved by 2D joint modeling of magnetic and gravity data in five sections across the main axis of ...

Geochemical and detrital zircon geochronological investigation of the metavolca...

The Borborema Province is an important Precambrian orogenic system in Northeastern Brazil. It was formed during the assembly of Western Gondwana in the Brasiliano-Pan-African Orogeny. The Neoproterozoic Sergipano Belt is part of the Province and occupies a large area of its southern portion. Investigation of provenance and tectonic environment of the metavolcanic-sedimentary complexes in this belt are of region...

Structural framework of the Jaibaras Rift, Brazil, based on geophysical data

The Cambro-Ordovician Jaibaras Rift is a NEeSW trending elongated feature, controlled by the Transbrasiliano lineament, locally known as Sobral-Pedro II shear zone (SPIISZ). An integrated study of geophysical data (gammaspectrometry, magnetometry and gravimetry) was undertaken in the Jaibaras Rift area, between Ceara Central (CCD) and M edio Coreaú domains (MCD), northwest Borborema Province. Geophysical data w...

Hercynite–quartz-bearing granulites from Brejões Dome area, Jequié Block, Bahia...

RESTRITO; Submitted by Santiago Fabio (fabio.ssantiago@hotmail.com) on 2012-07-05T15:20:09Z No. of bitstreams: 1 AA.pdf: 1938341 bytes, checksum: 9a324acc2f3edcbd630ce7c7d370fc14 (MD5); Made available in DSpace on 2012-07-05T15:20:10Z (GMT). No. of bitstreams: 1 AA.pdf: 1938341 bytes, checksum: 9a324acc2f3edcbd630ce7c7d370fc14 (MD5) Previous issue date: 2006; In the present study, we describe and discuss the ge...

Proveniência U-Pb em zircão (SHRIMP) da formação Tombador, Grupo Chapada Diaman...

A influência do quartzo nas reações de fusão de rochas máficas com hornblenda: ...

A Suite Serra da Esperança: intrusões alcalinas sintectônicas aos nappes brasil...