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.
Le faisceau filonien du Botswana est un objet majeur de 800 km de long et de 100 km de large present sur les cartes aeromagnetiques d'Afrique meridionale, mais peu d'informations concernant son age exact et sa composition geochimique ont ete publiees. De nouveaux ages ainsi que des donnees en elements en traces et isotopiques sur ce faisceau filonien indiquent que son magmatisme est indistingable...
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.