Emission spectrographic determination of barium in sea water using a cation exchange concentration procedure
No abstract available.
Environmental Science & Technology↗
Geology topics
Oiva Joensuu
Publications and source records attributed to Oiva Joensuu.
Macusanite occurrence, age, and composition, Macusani, Peru
Macusanite, originally believed to be a type of tektite because of its sculpture, is shown to be related to sillar of the Macusani region, Peru. K-Ar measurements establish identical Pliocene ages (4.2 m.y.) for macusanite and sillar and relate these deposits to the extensive ash flows of the southern Andes. These rocks are unique for glassy rocks in that lithium, boron, and arsenic contents are very high; cesium, rubidium, tellurium, fluorine, and tin are higher than normal; zinc, copper, chromium, and zirconium are lower than normal; and high-alumina minerals such as andalusite are present.
Macusani↗