Northeast Pacific benthic foraminiferal δ¹⁸O and δ¹³C reveal repeated millennial-scale events of strong deep-sea
ventilation (associated with nutrient depletion and/or high gas exchange) during stadial (cool, high ice volume) episodes
from 10 to 60 ka, opposite the pattern in the deep North Atlantic. Two climate mechanisms may explain this pattern....
Seven formations of the Upper Cretaceous Nanaimo Group
sedimentary rocks are exposed on Saturna and Tumbo Islands. These
formations are, from oldest to youngest, the Extension-Protection,
Cedar District, DeCourcy, Northumberland, Geoffrey, Spray, and
Gabriola. The rocks represent four successive cycles of deltaic
sedimentation, the oldest and the youngest of which...
Seven formations of the Upper Cretaceous Nanaimo Group
sedimentary rocks are exposed on Saturna and Tumbo Islands. These
formations are, from oldest to youngest, the Extension-Protection,
Cedar District, DeCourcy, Northumberland, Geoffrey, Spray, and
Gabriola. The rocks represent four successive cycles of deltaic
sedimentation, the oldest and the youngest of which...
Full Text:
rocks of Saturna and Tumbo islands, British Columbia
AN ABSTRACT OF THE THESIS OF
Charles David
Seven formations of the Upper Cretaceous Nanaimo Group
sedimentary rocks are exposed on Saturna and Tumbo Islands. These
formations are, from oldest to youngest, the Extension-Protection,
Cedar District, DeCourcy, Northumberland, Geoffrey, Spray, and
Gabriola. The rocks represent four successive cycles of deltaic
sedimentation, the oldest and the youngest of which...
This thesis presents work done to verify the accuracy of a
heuristic method for computing availability percentiles for
cascaded independent systems. Previous work has provided a model
for a single line that will be used as the basis for a simulation
of cascaded and parallel systems of lines. The simulation...
While many organizations claim to "put safety first," safety is rarely considered early in the design process when system-level architectural decisions are made. Instead, system design follows an abstraction-to-detail process to first meet functional and then performance requirements. Following this process, safety assurance occurs in the later stages of design...
Parasites are unique study organisms for evolutionary ecologists. Yet, molecular ecology studies on parasites have lagged far behind those on free-living organisms. The goal of the review in Chapter 2 was to illustrate areas of research that may be of particular interest in relation to the parasitic life style and...
