Reports ...B.A.N.Z.A.R. expedition committee and issued, 1937 - Antarctica |
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Page 59
THE PETROLOGY OF POSSESSION ISLAND ( CROZET ISLANDS ) By G. W. TYRRELL , A.R.C.Sc. , D.Sc. , F.G.S. , F.R.S.E. University of Glasgow . ( Tables XIV - XV ; Text - figs . 9-10 ) . INTRODUCTION The Crozet Islands rise from the eastern end ...
THE PETROLOGY OF POSSESSION ISLAND ( CROZET ISLANDS ) By G. W. TYRRELL , A.R.C.Sc. , D.Sc. , F.G.S. , F.R.S.E. University of Glasgow . ( Tables XIV - XV ; Text - figs . 9-10 ) . INTRODUCTION The Crozet Islands rise from the eastern end ...
Page 64
... Possession Island ; Anal . F. Herdsman . A. Average ankaramite , new computation by G.W.T. from 27 analyses of rocks called ankaramite , ankaramitic basalt , and ankaramitic basanite , mostly from works by Lacroix . 2. Melanocratic ...
... Possession Island ; Anal . F. Herdsman . A. Average ankaramite , new computation by G.W.T. from 27 analyses of rocks called ankaramite , ankaramitic basalt , and ankaramitic basanite , mostly from works by Lacroix . 2. Melanocratic ...
Page 68
... Possession Island suite with those of Heard Island and the other island groups of the South Indian Ocean is shown in the collective von Wolff diagram published in the author's Heard Island paper ( this Volume , Fig . 7 ) . BIBLIOGRAPHY ...
... Possession Island suite with those of Heard Island and the other island groups of the South Indian Ocean is shown in the collective von Wolff diagram published in the author's Heard Island paper ( this Volume , Fig . 7 ) . BIBLIOGRAPHY ...
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Common terms and phrases
abundant Albite alkali feldspar alumina American Bay Anal analcite analysed rock Ankaramitic Basanite ankaramitic trachybasalts apatite Atlas Cove Aubert augite augite and olivine augite-trachyte average biotite calcic Cave Bay Hill chemical Christmas Bay composition constituents Corinthian Bay Craiglockhart Craiglockhart type crater Crozet Islands Diopside doreite Drygalski Dunsapie type feldspar microlites feldspathic trachybasalt ferromagnesian G. W. Tyrrell glass granules groundmass groundmass consisting Heard Island Heard Island rocks Herdsman hornblende Hornblende-trachyandesite Hypersthene ilmenite iron iron-ore Jan Mayen Kerguelen labradorite Lacroix large phenocrysts laths lavas limburgitic basalts magma magnetite matrix mineral moraine nepheline nil nil norms oceanic islands olivine olivine and augite olivine-basalts Olivine-trachybasalt Osann-Rosenbusch petrographical phenocrysts phenocrysts of olivine Philippi phonolite phonolitic trachyte plagioclase plagioclase-basalt Possession Island pyroxenes Quoted from G. W. rock types Rogers Head salic Scottish Carboniferous silica Sir Douglas Mawson small phenocrysts sodalite South Indian Ocean specimens spots thin section TiO2 titanaugite trachyandesite trachybasalt trachyte Wolff projection