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Writers unacquainted with the interior of the Spanish colonies of the continent supposed that the small islands of Dominica, Guadaloupe, and St. They are encased in a formation of madrepore breccia, which the negroes call God's masonry, and which, like the travertin of Italy, envelops fragments of vases and other objects created by human skill. M. Dauxion Lavaysse and Dr.
§ VIII. If, therefore, you take a good geological map of Europe, and lay your finger upon the spots where volcanic influences supply either travertin or marble in accessible and available masses, you will probably mark the points where the types of the first school have been originated and developed.
The most remarkable leaf is palmate, like that of a fan- palm, and no plant having leaves of this structure has hitherto been discovered in Van Diemen's Land. The travertin containing this remnant of a lost vegetation, is of a pale yellow colour, hard, and in parts even crystalline; but not compact, and is everywhere penetrated by minute, tortuous, cylindrical pores.
They fill a larger space in the Paris Basin between the Seine and the Loire, and constitute also part of the northern limits of the area of the Netherlands which are shaded in the map. A.1: Bembridge series, Isle of Wight: Gypseous series of Montmartre. A.2: Osborne or St. Helen's series, Isle of Wight: Calcaire siliceux, or Travertin Inferieur.
May we suppose that olivine, in undergoing the remarkable change described at St. Behind Hobart Town there is a small quarry of a hard travertin, the lower strata of which abound with distinct impressions of leaves. Mr. Robert Brown has had the kindness to look at my specimens, and he informed me that there are four or five kinds, none of which he recognises as belonging to existing species.
A.3: Headon series, Isle of Wight: Calcaire siliceux, or Travertin Inferieur. A.4: Barton series. Sands and clays of Barton Cliff, Hants: Gres de Beauchamp, or Sables Moyens. B.1: Bracklesham series: Calcaire Grossier. B.2: Alum Bay and Bournemouth beds: Wanting in France? B.2: Wanting in England?: Soissonnais Sands, or Lits Coquilliers. C.1: London Clay: Argile de Londres, Cassel, near Dunkirk.
The principal divisions into which the lacustrine series may be separated are the following: first, Sandstone, grit, and conglomerate, including red marl and red sandstone; secondly, Green and white foliated marls; thirdly, Limestone, or travertin, often oolitic in structure; fourthly, Gypseous marls.
The main points of interest consist, first in some highly fossiliferous strata belonging to the Devonian or Carboniferous period; secondly, in proofs of a late small rise of the land; and lastly, in a solitary and superficial patch of yellowish limestone or travertin, which contains numerous impressions of leaves of trees, together with land-shells, not now existing.
The main points of interest consist, first in some highly fossiliferous strata, belonging to the Devonian or Carboniferous period; secondly, in proofs of a late small rise of the land; and lastly, in a solitary and superficial patch of yellowish limestone or travertin, which contains numerous impressions of leaves of trees, together with land-shells, not now existing.
Occasionally, during tempests, twigs and even boughs of trees with their leaves were torn off and carried for some distance so as to reach the lake. Springs, containing carbonate of lime, seem at some points to have supplied calcareous matter in solution, giving origin locally to a kind of travertin, in which organic bodies sinking to the bottom became hermetically sealed up.
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