 | | Journal (article/letter/editorial) |
| differences with stratigraphic position within a section of these flood lavas. The stratigraphically lowest... The study area lies ∼80 km south of the type section of Steens Basalt at Steens Mountain. Four nearby...fault scarp that bounds the eastern side of the southern Pueblo Mountains (Main Scarp section in Fig...calculated using an age of 28.02 Ma for Fish Canyon sanidine (Renne et al., 1998), a decay constant of 5.543−10...it assumes an age of 28.02 Ma for Fish Canyon sanidine. In order to compare our results to U–Pb zircon |
 | | Journal (article/letter/editorial) |
| elliptical in Dolerite Plugs in Antrim 55 cross-section, with an average diameter of 600 feet. It breaks...whom my gratitude is due. But as a continuous section across the contact aureole is impossible without...represent cristobalite retransformed into quartz. The new minerals which occur as small crystals in the glass...groundmass for the minerals of the new formation. Feldspar (probably sanidine), in the form of short prismatic...in which are dispersed numerous microlites of sanidine and plagioclase. The felsitic groundmass appears |
 | | Report (issue) |
| Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87106. 4 Department of Geology...Development, and Aggradation, Mogollon Rim, Verde Valley Region, Arizona—A Potential Analogue for pre-Grand Canyon...Travertines and Lacustrine Carbonates of the Grand Canyon Region Over the Past 12 Million Years—The Importance of...Evolution of the Grand Canyon/Colorado Plateau Region—Laramide to Present .......................120...Exhumation of the Central Colorado Plateau, Eastern Utah—New Insights from Apatite (U-Th)/He Thermochronometry |
 | | Book |
| Sweden AMSTERDAM • BOSTON • HEIDELBERG • LONDON • NEW YORK • OXFORD PARIS • SAN DIEGO • SAN FRANCISCO •...practice in this field are constantly changing. As new research and experience broaden our understanding...published by Terra Publishing in 2002, with much new data, especially from chemical and isotopic analyses...for geological and volcanological efforts in the region. By, Prof. C.J. Stillman Department of Geology...becomes disconnected from the mantle source and a new island begins to form. This is a matter of repetitive |
