Description Of The Fossils And Shells Collected In California - Couverture souple

Blake, William P

Couverture souple

ISBN 10 : 0548614350 ISBN 13 : 9780548614358

Editeur : Kessinger Publishing, 2007

Synopsis

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A propos du livre

Présentation de l'éditeur

January, 1855. SIR :I have examined the very interesting organic remains which you collected inC alifornia, and the drawings of such species as were too fragile to preserve, and I herein submit a few remarks upon their geological relations. .T here appear to be several distinct groups ;but I cannot pretend, from such scanty materials, to designate what particular formation every group represents. There is no obscurity resting on the deposits of Santa Barbara andS an Pedro, which represent a recent formation, in which you inform me the remains of the mammoth occur. The shells are generally those which live in the adjacent waters, and indicate little, if any, change of temperature since their deposition. The littoral character of this formation is very evident. Water-worn shells and fragments show the action of the surf, whilst entire specimens of bivalves, and Pholadidas, andS axicavae, remaining undisturbed in their self-excavated domicils, exhibit the same disposition of marine shells that is familiar to the observer on all sandy and argillaceous shores. They burrow in clay, mud, or sand, beyond the ordinary action of the surf; whilst some are scooped out by the tempest-driven surge, and others preyed upon by fishes and marine animals of various kinds, and are thus broken up and deposited among the living species. Of theE ocene, and the recent formation alluded to, I can speak with confidence ;but the intermediate beds are of uncertain age. The Ostrea vespertina, A nomia subcostata and Pecten vespertinus, occurring in the bank of Carrizo creek, are unlike any recent forms that I am acquainted with from the Pacific coast, but analagous toM iocene species of Virginia. This formation may, therefore, be regarded as of Miocene origin an opinion in which I am confirmed by someT he following reports on the fossil and recent shells were not received in season to be
(Typographical errors above are due to OCR software and don't occur in the book.)

Détails de l'édition

• Éditeur: Kessinger Publishing
• Date d'édition: 2007
• Langue: anglais
• ISBN 10: 0548614350
• ISBN 13: 9780548614358
• Reliure: Broché
• Nombre de pages: 36
• Coordonnées du fabricant: non disponible
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