ISSN:
1432-0967
Source:
Springer Online Journal Archives 1860-2000
Topics:
Geosciences
Notes:
Abstract Recent volcanism on the northern flank of the Medicine Lake Highland consists of a series of basalt to andesite spatter and cinder cones and their associated flows. Two particular structures, Cinder Butte and Schonchin Butte, have erupted materials that are very similar in terms of age, volume, modal mineralogy, and many major and trace elements. Significant differences with respect to TiO2, K2O, P2O5, Sr, Ba, Zr, and LREE can be related to possible changes in the mineralogy within the source region of these volcanic rocks. Apatite and priderite are the two minor constituents that best satisfy the constraints set by the mineral and chemical data. An inhomogeneous upper mantle or lower crust beneath the Medicine Lake Highland is indicated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00376698
