Abstract

ACEVEDO, Rogelio Daniel  and  GONZALEZ-GUILLOT, Mauricio. First petrophysical trials over dimension stones of  Tierra del Fuego. Rev. Asoc. Geol. Argent. [online]. 2011, vol.68, n.2, pp.233-245. ISSN 0004-4822.

These are the first trials in laboratory over dimension stones of  Tierra del Fuego. The Fuegian territory had a not evaluated potential respect of  the possible use of  this native resource. Neither hard rocks nor metamorphic rocks (slates) have been applied ever for residential construction, facades and flooring in Fuegian buildings until now. Only in recent years, two little quarries of  plutonic rocks have been opened. One of  them in the Jeu-Jepen hill, worked firstly to build the breakwaves of  Río Grande harbour and then the National railroad. The other one is located in the Ushuaia Peninsula and was started initially to remove a hill for locate the airport and lately used for facings. In the present work, selected stone samples were analysed under standard ASTM  test methods  for determining compressional strength and modulus of   rupture, practiced  in accord  to IRAM specification for determining apparent density, water absorption and open porosity and Dorry hardness test for measuring the resistance to abrasion. In Isla Grande of  Tierra del Fuego the major types of  dimension rocks are scarce and randomly distributed granitic bodies,  any of   them with  relatively high  compressional  and  tensional  resistance. Therefore,  the analyzed rocks of  the Jeu-Jepén hill combine among others the best conditions for its immediate use: high petrophysical responses, possibility of  obtaining useful-sized blocks, open quarry and easy access.

Keywords : Dimension stones; ASTM test; Tierra del Fuego.

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