VII.—A Method of Classifying Igneous Rocks according to their Chemical Composition

1906 ◽  
Vol 3 (3) ◽  
pp. 131-135
Author(s):  
Hugh Warth
Keyword(s):  
Chemical Composition ◽  
Igneous Rocks ◽  
Standard Rock ◽  
Great Work ◽  
Chemical Classification ◽  
Close Proximity

The chemical classification of igneous rocks is rendered difficult by the large number of substances which are present in them. H. S. Washington, who based his system of classification upon the composition of standard rock-forming minerals, found it necessary in his great work to divide his 2,880 rocks into no less than 167 final groups in order to ensure a close proximity between the rocks within each group.

VII.—Classification of Igneous Rocks according to their Chemical Composition.

1908 ◽  
Vol 28 ◽  
pp. 85-160
Author(s):  
H. Warth
Keyword(s):  
Chemical Composition ◽  
Igneous Rocks ◽  
The Individual ◽  
Geological Magazine

In my previous paper (see Geological Magazine, March 1906, p. 131) I explained a method of separating igneous rocks into sixteen groups of chemically similar individual rocks. A more minute subdivision appears, however, desirable for the special purpose of identifying and describing particular rocks. I have therefore devised the following further classification with four times as many groups, and I trust that the proximity thus attained between the individual rocks of each group will amply meet all requirements.

Chemical Classification of Iron Meteorites: XII. New Members of the Magmatic Groups

1998 ◽  
Vol 62 (4) ◽  
pp. 715-724 ◽  
Author(s):  
John T. Wasson ◽  
Byeon-Gak Choi ◽  
Eric A. Jerde ◽  
Finn Ulff-Møller
Keyword(s):  
Iron Meteorites ◽  
New Members ◽  
Chemical Classification

Multidimensional classification of magma types for altered igneous rocks and application to their tectonomagmatic discrimination and igneous provenance of siliciclastic sediments

Lithos ◽  
2017 ◽  
Vol 278-281 ◽  
pp. 321-330 ◽  
Author(s):  
Surendra P. Verma ◽  
M. Abdelaly Rivera-Gómez ◽  
Lorena Díaz-González ◽  
Kailasa Pandarinath ◽  
Alejandra Amezcua-Valdez ◽  
...  
Keyword(s):  
Igneous Rocks ◽  
Siliciclastic Sediments
Sign in / Sign up

Export Citation Format

Share Document