Book contents
- Frontmatter
- Preface
- Contents
- CHAPTER I
- CHAPTER II
- CHAPTER III
- CHAPTER IV
- CHAPTER V
- CHAPTER VI
- CHAPTER VII
- CHAPTER VIII
- CHAPTER IX
- CHAPTER X
- CHAPTER XI
- CHAPTER XII
- CHAPTER XIII
- CHAPTER XIV
- CHAPTER XV
- CHAPTER XVI
- CHAPTER XVII
- CHAPTER XVIII
- CHAPTER XIX
- CHAPTER XX
- CHAPTER XXI
- CHAPTER XXII
- CHAPTER XXIII
- ADDENDA
- INDEX
- Frontmatter
- Preface
- Contents
- CHAPTER I
- CHAPTER II
- CHAPTER III
- CHAPTER IV
- CHAPTER V
- CHAPTER VI
- CHAPTER VII
- CHAPTER VIII
- CHAPTER IX
- CHAPTER X
- CHAPTER XI
- CHAPTER XII
- CHAPTER XIII
- CHAPTER XIV
- CHAPTER XV
- CHAPTER XVI
- CHAPTER XVII
- CHAPTER XVIII
- CHAPTER XIX
- CHAPTER XX
- CHAPTER XXI
- CHAPTER XXII
- CHAPTER XXIII
- ADDENDA
- INDEX
Summary
BAHIA BLANCA.
The Beagle arrived on the 24th of August, and a week afterwards sailed for the Plata. With Captain Fitzroy's consent I was left behind, to travel by land to Buenos Ayres. I will here add some observations, which were made during this visit, and on a previous occasion, when the Beagle was employed in surveying the harbour. Not much can be made out respecting the geology. At the distance of some miles inland, an escarpment of a great argillaceo-calcareous formation of rock extends. The space near the coast consists of plains of hardened mud, and broad bands of sand-dunes, which present appearances, that can easily be accounted for by a rise of the land; and of this phenomenon, although to a trifling amount, we have other proofs.
At Punta Alta, a low cliff, about twenty feet high, exposes a mass of partly consolidated shingle, irregularly interstratified with a reddish muddy clay, and containing numerous recent shells. We may believe a similar accumulation would now take place, on any point, where tides and waves were opposed. In the gravel a considerable number of bones were embedded.
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- Journal of Researches into the Geology and Natural History of the Various Countries visited by H. M. S. Beagle , pp. 95 - 123Publisher: Cambridge University PressPrint publication year: 2009First published in: 1840