|
| Titre : |
A Descriptive petrography of the igneous rocks vol. III: The Intermediate rocks |
| Type de document : |
texte imprimé |
| Auteurs : |
albert johannsen |
| Mention d'édition : |
2d ed |
| Editeur : |
Chicago : Chicago University press, |
| Année de publication : |
1962 |
| Importance : |
360p |
| Présentation : |
Fig., portr, in-8[xc2][xb0] |
| Format : |
25cm |
| Langues : |
Anglais (eng) |
| Catégories : |
552 Pétrologie
|
| Tags : |
pétrographie |
| Index. décimale : |
552/20 |
| Résumé : |
VOLUMES 3 and 4 of this work complete what must be the most compendious hand book of petrography ever issued. In the first volume Johannsen gave an admirably illustrated account of rock textures and structures, together with an account of the many systems of classification in use. He himself has devised a quantitative mineral classification, and this is used in the descriptive part of the work. In this system rocks are first divided into classes according to the relative amounts of light- and dark-coloured minerals present, and then into families and sub-families on the percentage ratios of certain other mineral components actually present. |
| Permalink : |
https://web.univ-oran2.dz/pmbfstu/index.php?lvl=notice_display&id=2326 |
A Descriptive petrography of the igneous rocks vol. III: The Intermediate rocks [texte imprimé] / albert johannsen . - 2d ed . - Chicago : Chicago University press,, 1962 . - 360p : Fig., portr, in-8[xc2][xb0] ; 25cm. Langues : Anglais ( eng)
| Catégories : |
552 Pétrologie
|
| Tags : |
pétrographie |
| Index. décimale : |
552/20 |
| Résumé : |
VOLUMES 3 and 4 of this work complete what must be the most compendious hand book of petrography ever issued. In the first volume Johannsen gave an admirably illustrated account of rock textures and structures, together with an account of the many systems of classification in use. He himself has devised a quantitative mineral classification, and this is used in the descriptive part of the work. In this system rocks are first divided into classes according to the relative amounts of light- and dark-coloured minerals present, and then into families and sub-families on the percentage ratios of certain other mineral components actually present. |
| Permalink : |
https://web.univ-oran2.dz/pmbfstu/index.php?lvl=notice_display&id=2326 |
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552 
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