|
Showing 1 - 17 of
17 matches in All Departments
This scarce antiquarian book is a selection from Kessinger
PublishingA AcentsAcentsa A-Acentsa Acentss Legacy Reprint Series.
Due to its age, it may contain imperfections such as marks,
notations, marginalia and flawed pages. Because we believe this
work is culturally important, we have made it available as part of
our commitment to protecting, preserving, and promoting the world's
literature. Kessinger Publishing is the place to find hundreds of
thousands of rare and hard-to-find books with something of intere
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
This scarce antiquarian book is a selection from Kessinger
Publishing's Legacy Reprint Series. Due to its age, it may contain
imperfections such as marks, notations, marginalia and flawed
pages. Because we believe this work is culturally important, we
have made it available as part of our commitment to protecting,
preserving, and promoting the world's literature. Kessinger
Publishing is the place to find hundreds of thousands of rare and
hard-to-find books with something of interest for everyone!
Purchase of this book includes free trial access to
www.million-books.com where you can read more than a million books
for free. This is an OCR edition with typos. Excerpt from book:
CHAPTER II. GENERAL GEOLOGY. INTRODUCTION. The general geology of
the Blewett mining district is but a small fragment of the geology
of the eastern portion of the Cascade mountains. Because of this
fact, the elucidation of nearly all of the intricate geologic
problems involved in this district must be partially sought for in
the broader field surrounding this district. A part of this broader
field has been studied and areally mapped and published in the
Mount Stuart and Sno- qualmie geological folios. Hence all of the
formations occurring in the Blewett district have been previously
described, and in the following discussion an attempt will be made
to represent in as much detail as possible the more salient
features of each formation and their relation to the broader field
outside, and the problems involved in the deposition of the ore.
Many of the formations occurring outside of the district do not
occur within it. The oldest formation found in this district
consists of a lower series of quartzites, slates, quartz-
ite-conglomerates and cherts, overlaid apparently unconforma- bly
by an upper series of brecciated lavas and tuffs, together with
massive igneous rocks. No fossiliferous evidence has been obtained
to determine their age, but from their close resemblance to
formations in the north, whose age is known, they are provisionally
assigned to the Carboniferous. After their deposition they
underwent deformation resulting in their meta- morphism.
Accompanying this deformation were great intrusions of peridotite
and other associated basic igneous rocks which were later more or
less altered to serpentine. After this, Ann. Report, Geological
Survey, Canada, New Series, Vol. 7, 1894, pp. 37 B-49-B. erosion
became active and deformational movements produced a warping, al...
|
You may like...
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
Loot
Nadine Gordimer
Paperback
(2)
R398
R330
Discovery Miles 3 300
|