The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We thank Mitchell and Tappe for giving us the opportunity to discuss the nature of kimberlite magmas. We agree with Mitchell and Tappe about the importance of mineralogy, but the mineralogy of interstitial phases in kimberlites can shed little light on the origin of kimberlite magmas. Our use of cation units enables the interpretation of kimberlite whole-rock compositions in terms of the stoichiometry...
Magmatism associated with ca. 2.04 Ga rifting of the Superior Province resulted in the formation of a succession of tholeiitic and alkaline basalts, as well as minor rhyolites, collectively known as the Povungnituk Group (Cape Smith foldbelt). The tholeiites are not typical continental-flood basalts (CFB) as they lack significant negative Nb and Ta anomalies, indicating that crustal contamination...
The success of recent dynamic models of adiabatic partial melting of the Earth's mantle has lead to an increasing acceptance that much of the compositional spectrum of terrestrial basalts can be explained in terms of variations in the physical parameters of melting of a common anhydrous-lherzolite mantle source. A comparison of normalized compositions of terrestrial picritic lavas with the results...
The success of recent dynamic models of adiabatic partial melting of the Earth's mantle has lead to an increasing acceptance that much of the compositional spectrum of terrestrial basalts can be explained in terms of variations in the physical parameters of melting of a common anhydrous-lherzolite mantle source. A comparison of normalized compositions of terrestrial picritic lavas with the results...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.