caa a22 4500 388110414 CHVBK 20180307125352.0 cr unu---uuuuu 161130s1999 xx s 000 0 eng 10.1017/S0263593300007215 doi S0263593300007215 pii (NATIONALLICENCE)cambridge-10.1017/S0263593300007215 Alkaline basaltic volcanism in the Tertiary of central East Greenland—the Trekantnunatakker [Elektronische Daten] The Trekantnunatakker rise from the inland ice NW of the head of Kangerlussuaq fjord on the Blosseville Coast of central East Greenland. In these nunataks the main sequence of Tertiary flood basalts is overlain by picritic and ankaramitic lavas. These mildly alkaline lavas have lower 143Nd/144Nd and higher 87Sr/86Sr than the tholeiitic flood basalts. Their isotopic and incompatible element characteristics are similar to those of moderately enriched ocean island basalts, and comparable to the alkaline lavas of the nearby Prinsen af Wales Bjerge. The Trekantnunatakker lavas were the result of small-volume deep melting and it is concluded that an enriched OIB-type source was present as a component of the East Greenland plume. Copyright © Royal Society of Edinburgh 1999 alkali basalts nationallicence ankaramites nationallicence picrites nationallicence enriched source nationallicence neodynium and strontium isotopes nationallicence Brown P. E. Department of Geology, University of St. Andrews, St Andrews KY16 9ST, U.K. Evans I. B. Department of Geology, University of St. Andrews, St Andrews KY16 9ST, U.K. Becker S. M. Department of Geology, University of St. Andrews, St Andrews KY16 9ST, U.K. Transactions of the Royal Society of Edinburgh: Earth Sciences Royal Society of Edinburgh Scotland Foundation 90/2(1999), 165-172 0263-5933 90:2<165 1999 90 TRE https://doi.org/10.1017/S0263593300007215 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0263593300007215 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brown P. E. Department of Geology, University of St. Andrews, St Andrews KY16 9ST, U.K NATIONALLICENCE 700 1- Evans I. B. Department of Geology, University of St. Andrews, St Andrews KY16 9ST, U.K NATIONALLICENCE 700 1- Becker S. M. Department of Geology, University of St. Andrews, St Andrews KY16 9ST, U.K NATIONALLICENCE 773 0- Transactions of the Royal Society of Edinburgh: Earth Sciences Royal Society of Edinburgh Scotland Foundation 90/2(1999), 165-172 0263-5933 90:2<165 1999 90 TRE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge