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sierradetecka @fieldwork:sierradetecka #Argentina #Jurassic #Paleozoic #Patagonia #Sierra de Tecka #fieldwork #laccolith #mapping

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steps towards the Atlantic coast. <imgcaption fig2a|Fig. 2: (a) Position of Chubut Province with majo... of Tecka in the District of Languiñeo (see Figs. 2a & 2b). It belongs geomorphologically to the Patag... eous magmatic texture on the outcrop scale (Fig. 22a). Fresh pieces show a light-grey groundmass with ... t mineral in the analysed samples is plagioclase, making up around 70% by volume. The grains have a hypidi