Xenoliths of the Leucite Hills Volcanic Rocks, Sweetwater County, Wyoming
Author : Jay T. Sperr
Publisher :
Page : 114 pages
File Size : 15,39 MB
Release : 1985
Category : Igneous rocks
ISBN :
Author : Jay T. Sperr
Publisher :
Page : 114 pages
File Size : 15,39 MB
Release : 1985
Category : Igneous rocks
ISBN :
Author : Alfred Reginald Schultz
Publisher :
Page : 64 pages
File Size : 30,75 MB
Release : 1912
Category : Alunite
ISBN :
Author : W. Dan Hausel
Publisher :
Page : 76 pages
File Size : 41,9 MB
Release : 2006
Category : Nature
ISBN :
Author : James Furman Kemp
Publisher :
Page : 22 pages
File Size : 12,23 MB
Release : 1897
Category : Leucite
ISBN :
Author :
Publisher :
Page : 124 pages
File Size : 33,82 MB
Release : 1989
Category : Geology
ISBN :
Author : Wyoming Geological Association. Field Conference
Publisher :
Page : 70 pages
File Size : 48,87 MB
Release : 1995
Category : Geology
ISBN :
Author : W. Dan Hausel
Publisher :
Page : 320 pages
File Size : 40,65 MB
Release : 1994
Category : Science
ISBN : 9781884589041
Author : Roger H. Mitchell
Publisher : Springer Science & Business Media
Page : 476 pages
File Size : 48,32 MB
Release : 2012-12-06
Category : Science
ISBN : 1461537886
In this book, the first dedicated entirely to the petrology of lamproites and their relationships to other potassium-rich rocks, the objective of the authors is to provide a comprehensive critical review of the occurrence, mineralogy, geochemistry, and petrogenesis of the clan. Although lamproites represent one of the rarest of all rock types, they are both economically and scientifically important and we believe the time is ripe for a review of the advances made in their petrology over the past two decades. Many of these advances stem from the recognition of diamond-bearing lamproites in Western Australia and the reclassification of several anomalous diamond-bearing kim berlites as lamproites. Consequently lamproites, previously of interest only to a small number of mineralogists specializing in exotica outside the mainstream of igneous petrol ogy, have become prime targets for diamond exploration on a worldwide basis. Contemporaneously with these developments, petrologists realized that lamproites possess isotopic signatures complementary to those of midoceanic ridge basalts, alkali basalts, kimberlites, and other mantle-derived melts. These isotopic studies provided new insights into the long-term development of the mantle by suggesting that the source regions of lamproites were metasomatically enriched in light rare earth and other incompatible elements up to 1-2 Ga prior to the melting events leading to generation of the magma.
Author :
Publisher :
Page : 650 pages
File Size : 21,4 MB
Release : 1998
Category : Geology
ISBN :
Author : Louis Charles Pakiser
Publisher : Geological Society of America
Page : 843 pages
File Size : 10,4 MB
Release : 1989
Category : Science
ISBN : 081371172X
A review and evaluation of our knowledge of the structure of the crust and upper mantle of the continental United States, exclusive of Alaska, as determined from geophysical observations. Covers geophysical methods of studying the crust and upper mantle; a region-by-region review of crustal and upper-mantle structure; continental overviews based on the different geophysical methods; and geologic and petrologic syntheses based largely on the geophysical results.