Geological Observations on the Volcanic Islands
by Charles Darwin
★★★★★No ratings yet
Language: English
Sign in to rate this book.
Sign in to shelve this book.
About this eBook
- Author
- Darwin, Charles, 1809-1882
- Title
- Volcanic Islands
- Credits
- Sue Asscher
- Language
- English
- LoC Class
- QE: Science: Geology
- Subject
- Geology -- South America
- Category
- Text
- eBook-No.
- 3054
- Project Gutenberg
- https://www.gutenberg.org/ebooks/3054
- Release Date
- February 1, 2002
- Copyright
- Public domain in the USA.
Contents
- 1.Geological Observations on the Volcanic Islands — by Charles Darwin — Contents
- 2.EDITORIAL NOTE — G.T.B.
- 3.VOLCANIC ISLANDS.
- 4.DETAILED TABLE OF CONTENTS — I.—ST. JAGO, IN THE CAPE DE VERDE ARCHIPELAGO. — II.—FERNANDO NORONHA; TERCEIRA; TAHITI, ETC. — III.—ASCENSION. — IV.—ST. HELENA. — V.—GALAPAGOS ARCHIPELAGO. — VI.—TRACHYTE AND BASALT.—DISTRIBUTION OF VOLCANIC ISLES. — VII.—AUSTRALIA; NEW ZEALAND; CAPE OF GOOD HOPE. — INDEX.
- 5.GEOLOGICAL OBSERVATIONS ON VOLCANIC ISLANDS.
- 6.CRITICAL INTRODUCTION. — JOHN W. JUDD.
- 7.CHAPTER I. ST. JAGO, IN THE CAPE DE VERDE ARCHIPELAGO. — (FIGURE 1: MAP 1: PART OF ST. JAGO, ONE OF THE CAPE DE VERDE ISLANDS.) — MINERALOGICAL DESCRIPTION OF THE ROCKS OF THE LOWEST SERIES. — THE EXTENT AND HORIZONTALITY OF THE CALCAREOUS STRATUM. — THE BASALTIC LAVA, SUPERINCUMBENT ON THE CALCAREOUS DEPOSIT. — SIGNAL POST HILL. — INLAND HILLS OF MORE ANCIENT VOLCANIC ROCKS. — VALLEYS NEAR THE COAST. — RECENT CONGLOMERATE.
- 8.CHAPTER II. FERNANDO NORONHA; TERCEIRA; TAHITI, ETC. — FERNANDO NORONHA. — TERCEIRA IN THE AZORES. — EFFECTS OF STEAM ON THE TRACHYTIC ROCKS. — TAHITI (OTAHEITE). — MAURITIUS. — ST. PAUL’S ROCKS. — A GLOSSY INCRUSTATION.
- 9.CHAPTER III. ASCENSION. — (MAP 2: THE ISLAND OF ASCENSION.) — BASALTIC ROCKS. — VOLCANIC BOMBS. — AERIFORM EXPLOSIONS. — EJECTED GRANITIC FRAGMENTS. — TRACHYTIC SERIES OF ROCKS. — VEINS IN THE EARTHY TRACHYTIC MASSES. — SILICEOUS SINTER AND JASPER. — CONCRETIONS IN PUMICEOUS TUFF. — FORMATION OF CALCAREOUS ROCKS ON THE SEA-COAST. — A FRONDESCENT CALCAREOUS INCRUSTATION. — SINGULAR LAMINATED BEDS ALTERNATING WITH AND PASSING INTO OBSIDIAN. — FIRST. — SECONDLY. — THIRDLY. — FOURTHLY. — FIFTHLY. — LAMINATION OF VOLCANIC ROCKS OF THE TRACHYTIC SERIES.
- 10.CHAPTER IV. ST. HELENA. — BASALTIC SERIES. — BASAL SUBMARINE LAVAS. — FLAGSTAFF HILL AND THE BARN. — TURK’S CAP AND PROSPEROUS BAYS. — BASALTIC RING. — THE CENTRAL CURVED RIDGE. — SUPERFICIAL DEPOSITS. — BEDS OF EXTINCT LAND-SHELLS. — ELEVATION OF THE LAND. — COAST DENUDATION. — CRATERS OF ELEVATION.
- 11.CHAPTER V. GALAPAGOS ARCHIPELAGO. — (FIGURE 11. MAP 3. GALAPAGOS ARCHIPELAGO. — CHATHAM ISLAND. CRATERS COMPOSED OF A SINGULAR KIND OF TUFF. — (FIGURE 12. THE KICKER ROCK, 400 FEET HIGH.) — SMALL BASALTIC CRATERS. — ALBEMARLE ISLAND. — FLUIDITY OF DIFFERENT LAVAS. — CRATERS OF TUFF. — BANKS’ COVE. — JAMES ISLAND. — SEGMENT OF A BASALTIC CRATER. — PSEUDO-EXTRANEOUS, EJECTED FRAGMENTS. — CONCLUDING REMARKS ON THE TUFF-CRATERS. — MINERALOGICAL COMPOSITION OF THE ROCKS. — ELEVATION OF THE LAND. — DIRECTION OF THE FISSURES OF ERUPTION.
- 12.CHAPTER VI. TRACHYTE AND BASALT.—DISTRIBUTION OF VOLCANIC ISLES. — ON THE DISTRIBUTION OF VOLCANIC ISLANDS.
- 13.CHAPTER VII. AUSTRALIA; NEW ZEALAND; CAPE OF GOOD HOPE. — NEW SOUTH WALES. — STRATIFICATION OF THE ESCARPMENT. — CURRENT-CLEAVAGE. — VALLEYS IN THE SANDSTONE PLATFORMS. — VAN DIEMEN’S LAND. — TRAVERTIN WITH EXTINCT PLANTS. — ELEVATION OF THE LAND. — KING GEORGE’S SOUND. — SUPERFICIAL FERRUGINOUS BEDS. — SUPERFICIAL CALCAREOUS DEPOSIT. — CAPE OF GOOD HOPE. — SANDSTONE FORMATION.
- 14.INDEX TO VOLCANIC ISLANDS.
Community reviews
Sign in to write a review.
No reviews yet.