I evaluated fire occurrence, growth and recruitment and determined the fire history of 21 old and 20 young 8ha stands in Cascade, Siskiyou and mid-Coast mixed conifer and evergreen forests in southwestern Oregon. The rates and patterns of growth were measured and analyzed on 1,079 old-growth and 2,111
young stand...
Full Text:
, special thanks are due to Drs. David Perry, Michael Amaranthus,
Boone Kauffman, and Efern Cazares for
The volcanic rocks of the Harney Basin comprise a bimodal
assemblage of rhyolites (SiO₂ greater than 72%) and basalts (SiO₂
less than 52%). Tholeiitic basalts account for 15 rocks analyzed and
alkalic basalts for three. Most basalts contain phenocrysts of olivine
and plagioclase. Pyroxene phenocrysts were not found. Rhyolite
flows...
Full Text:
author would like to thank Cyrus W. Field for making
possible study at Yale University. Special
Oregon’s High Lava Plains Province (HLP) has strongly bimodal basalt and rhyolitic volcanism. The Province caps the northern margin of the Basin and Range Province and serves as a transitional region between westward extension of the Basin and Range Province and unextended crust to the north . The High Lava...
Full Text:
). Hart et al. report that three ma-
jor pulses of high alumina low potassium olivine tholeiite (HAOT
The Jefferson Mountain area, located at the eastern end of
the Centennial Mountains in Fremont County, Idaho and Beaverhead
County, Montana, is approximately 42 square miles in size. The
area contains exposed metamorphic, sedimentary, and volcanic
rocks ranging in age from Precambrian to Tertiary. Approximately
2,500 feet of Paleozoic and...
The purpose of this book is to
provide you with a bit more information about the organisms maintained at the ASLC so that you
may deepen your understanding and appreciation of them.
However, as a prelude to the more species-specific information contained in this document, there
are three short chapters...
Full Text:
.
Very special gratitude is extended to Tylan Schrock, executive director of The Alaska SeaLife
11
The schist of Skookum Gulch (SSG) is an informal name applied to
a fault-bounded melange composed mainly of schistose metamorphic
rocks and less abundant sedimentary and igneous rocks located in the
eastern Klamath Mountains of northern California. The SSG features
outcrops of lawsonite+sodic amphibole blueschist and epidote+sodic
amphibole rocks transitional...
Full Text:
Dr. Robert
D. Lawrence. Special thanks is given to Arthur J. Boucot for his
encouragement and
Deposition of the Middle Devonian part of the Denay Limestone
and Bay State Dolomite in the northern Antelope Range and Fish
Creek Range, respectively, took place on and in front of a carbonate
platform with a lime sand shoal at the shelf edge. In the Givetian part
of the Denay...
Full Text:
. Core Analysis Report 90
Depositional and Diagenetic model for the Middle Devonian Denay
Limestone