Thesis (Master of Letters)--University of California. / Microfilm copy made by University of California Library. Positive. 1 -- reel-- 35 mm.

Thesis (M.A. in History)--University of California, Berkeley, Dec. 1922. / Includes bibliographical references (leaves 155-158).

Published also as Thesis (Ph. D.)--University of California. / Bibliography: p. 211-220.

Thesis (Ph. D.) Columbia University, 1941. / On cover: Supplement to American antiquity, vol. 7, no. 2, part 2, 1941. Published also without thesis note. Bibliography: p. 86-90.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 469-502).

A zone of crustal weakness associated with the Zuni Lineament in the southern half of New Mexico has been delineated by lead isotope measurements, a microearthquake study and magnetic depth soundings. The lead results of Slawson and Austin (1962) revealed the possible existence of a northwest trending zone of isotopically similar lead, bounded on either side by isotopically variable leads. This feature passes through Socorro and Alamogordo, New Mexico, and is coincident in this area with the Zuni Lineament. The microearthquake results (Sanford and Long, 1965) show that a shallow crustal zone of weakness is associated with the isotopically similar zone. The magnetic results (Schmucker, 1964; Livingstone, 1966) confirm that the structure is shallow, and also indicate that it may be a region of high electrical conductivity. It is suggested that this zone of weakness centred on the Zuni Lineament has served as a conduit system for hydro-thermal mineralizing solutions which carried the lead to its final sites of deposition. The lead was originally introduced into the Precambrian rocks about 1550 m.y. ago, mixed with radiogenic rock lead of that age about 30 m.y. ago, and then, finally emplaced. / Science, Faculty of / Earth, Ocean and Atmospheric Sciences, Department of / Graduate

No description available.

No description available.

Climate-sensitive tree ring chronologies and modern climate data are used to produce prehistoric estimates of summer drought for the Mimbres and Pinelawn-Reserve areas in New Mexico. The nature of these estimates are evaluated using tenets of the Anasazi behavioral model. It is concluded that many of the behavioral processes associated with prehistoric populations on the southern Colorado Plateaus can be seen operating within the two Mogollon areas selected for study. As they have on the plateaus, processes in past human behavior can be linked to three factors: prehistoric efforts to intensify agricultural production, fluctuations in population group size, and increases (or decreases) in summer drought.

No description available.