Petrography of offhshore beachrock adjacent to the north coast of Rio Grande do Norte state, Brazil

Authors

  • Izaac Cabral Neto Universidade Federal do Rio Grande do Norte
  • Valéria Centurion Córdoba Universidade Federal do Rio Grande do Norte
  • Helenice Vital Universidade Federal do Rio Grande do Norte

DOI:

https://doi.org/10.5380/abequa.v2i1-2.14116

Keywords:

Beachrock, Petrography, Urca do Minhoto

Abstract

Petrographic analysis was carried out in a submerged rock-body on the north shelf of Rio Grande do Norte state. It is 18 km far from the actual coastline and it is named Urca do Minhoto. Quartz, bioclasts, feldspar and rock-fragments are the most important framework grains. Calcium carbonate cement occurs in three distinct types: micritic porefiling and equant spar, both of them filling the pore space, and isopachous prismatic rims, precipitated on the grain border. Grain-size varies from very-fine sand to granules. The grain packing suggests a shallow cementation environment (eodiagenesis)

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How to Cite

Cabral Neto, I., Córdoba, V. C., & Vital, H. (2010). Petrography of offhshore beachrock adjacent to the north coast of Rio Grande do Norte state, Brazil. Quaternary and Environmental Geosciences, 2(1-2). https://doi.org/10.5380/abequa.v2i1-2.14116

Issue

Vol. 2 No. 1-2 (2010)

Section

Artigos

License

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