Basalt intrusions in evaporites by Bernhard J. Knipping, Ralph B. Phillips

Posted by

By Bernhard J. Knipping, Ralph B. Phillips

Show description

Read Online or Download Basalt intrusions in evaporites PDF

Similar mineralogy books

High Resolution Morphodynamics and Sedimentary Evolution of Estuaries (Coastal Systems and Continental Margins)

This publication makes a speciality of using high-resolution geophysical innovations, box observations and modeling to enquire the morphodynamics of estuaries on either glaciated and non-glaciated coasts and on various time scales. Papers during this booklet provide a brand new method of nearshore and estuary experiences, with an emphasis on multidisciplinary suggestions and information integration.

Layered Intrusions

This edited paintings includes the newest advances relating to the research of layered intrusions and cumulate rocks formation. the 1st a part of this e-book provides studies and new perspectives of techniques generating the textural, mineralogical and geochemical features of layered igneous rocks. the second one half summarizes development within the research of chosen layered intrusions and their ore deposits from assorted components of the area together with Canada, Southwest China, Greenland and South Africa.

Additional resources for Basalt intrusions in evaporites

Example text

However, it is composed predominantly of goethite, in part with hematite, and submicroscopic clay minerals (TROVER 1967). , dikes , , and ). These much smaller crystals (< 1 mm O) have also been converted partially into chrysotile. Pyroxene, amphibole Clinopyroxene is another frequent phenocryst in the basaltic rocks, occurring nearly always as zoned idiomorphic augites which are frequently corroded. e ^ ~ ~v ~ ~. ~ "~ ...... q A V 33 I-i . . . ? ~ '~ "7. -~ ~. ~ o . ~ . ~ "~ ~ o "~ Z © < < [--.

K) = 3000 R Fig. 5 The most extreme points of those shown in fig. 3 for one rock type were connected in order to clarify the range of variation in the chemical composition of the different basalts from the Werra mining district (further explanation in text). 59 The resets of the microscopy are largely confirmed when the results of the chemical analyses are depicted in this way. The following statements can be made based on this evaluation: 1. , titanaugite, plagioclase). 2. Similarities in the conditions of formation are underscored by the overlapping areas in the R1-R2 diagram covered by the studied olivine nephefinites, limburgites, and basanites (fig.

Yet, they may reach sizes of over 1 cm in the hornblende-bearing basanite of dike . Corrosion of the rare pyroxenes in samples 40/21 and 33/723 (phonolitic tephrite, dike ) is usually very extensive. They appear to be replaced by homblende. When the groundmass of the basaltic rocks is not made up of microlitic glass, it is frequently composed of an acicular framework of hypidiomorphic to idiomorphic, brownish augite. The columnar crystals about 20 lma in size display the hour-glass structures characteristic of titanaugite.

Download PDF sample

Rated 4.03 of 5 – based on 37 votes