▁and ▁African ▁contin ents ▁before ▁Ord ov ician ▁time ." ▁American ▁Associ ag ion ▁of ▁Pet role um ▁Ge olog ists ▁Bul letin . ▁November ; ▁v . ▁ 5 4 ; ▁no . ▁ 1 1 ; ▁p .   2 1 1 1 - 2 1 1 9 . ▁Loc zy , ▁L ., ▁ 1 9 7 1 . ▁" G ond w ana ▁Problem s ▁in ▁the ▁Light ▁of ▁Rec ent ▁Pale ont olog ic ▁and ▁T ect onic ▁Rec ogn itions ." ▁An ais ▁da ▁Academia ▁Brasile ira ▁de ▁Ci ências , ▁v . ▁ 4 3 , ▁su plement o , ▁ 3 6 3 - 3 8 6 . ▁Loc zy , ▁L ., ▁ 1 9 7 3 . ▁" Some ▁problems ▁of ▁the ▁t ect onic ▁framework ▁of ▁the ▁Gu iana ▁Sh ield ▁with ▁special ▁regard ▁for ▁the ▁R ora ima ▁Form ation ." ▁Ge ologische ▁Rund schau , ▁Band . ▁ 6 2 , He ft ▁ 2 , ▁p .   3 1 8 - 3 4 2 . ▁Loc zy , ▁L ., ▁ 1 9 7 4 . ▁" P oss ibil idades ▁de ▁pet ró le o ▁e ▁min eral ização ▁na ▁Ama z ô nica ." ▁Min era ção ▁e ▁, ▁n . º ▁ 3 5 4 , ▁An o ▁XXX V II , ▁p .   6 - 1 3 . ▁ ▁References ▁▁ ▁Biography ▁of ▁Professor ▁Louis ▁De ▁Loc zy ▁Year book ▁of ▁the ▁Institute