Stuart A. Hall

Isotopic Preservation of Himalayan/Tibetan Uplift, Denudation, and Climatic Histories of Two Molasse Deposits

Two distinctive molasse deposits within the Indo-Asian collision zone have been investigated to help understand the post-Oligocene evolution of the Himalaya and southern Tibetan plateau. The Siwalik Group (predominantly fluvial sandstones and siltstones), is widespread throughout the foothills of the Himalaya from Pakistan to eastern India. Paleomagnetic analysis of a measured section in the Bakiya Khola, southeastern Nepal, constrains depositional ages (

Gulf of Mexico tectonic history: Hotspot tracks, crustal boundaries, and early salt distribution

t_{dep}

MAGNETIC ANOMALY MAP OF NORTH AMERICA

) to between 10.8 and 4.9 Ma. The average accumulation rate during this interval was 0.4-0.5 mm/yr.

Paleomagnetic paleolatitude of Early Cretaceous Ontong Java Plateau basalts: implications for Pacific apparent and true polar wander

^{40}Ar/^{39}Ar

Mantle downwelling beneath the Australian-Antarctic discordance zone: evidence from geoid height versus topography

dating of 126 detrital K-feldspars from nine horizons in the Bakiya Khola section (