Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments / by Sir Charles Lyell.

  • Lyell, Charles, Sir, 1797-1875.
Date:
1865
Catalogue details

Licence: Public Domain Mark

Credit: Elements of geology, or, The ancient changes of the earth and its inhabitants as illustrated by geological monuments / by Sir Charles Lyell. Source: Wellcome Collection.

Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.

    815/822 (page 793)
    TRA Trap, relation of, to active volcanic products, 013 —- rocks, name and origin of, 087 spheroidal, of Madeira, 646 tuff, 597, 601 veins in Airduamurchan, GU4 Trappean rocks, 88 — relation to lava, 613 Trass of Lower Eifel, C75 term explained, 601 Travertin, ho.v deposited, 34 inferieur, 300 Tree-fern from Brazil, 467 from hie of Bourbon, 467 Tree, fossil, oblique in Coal, 481, 484 Trees, erect, in Coal, 477, 480 Tremadoc slates, fossils of, 571 Trenton, limestone fossils of, 567 Trezza, beds of clay and lava at, 651 Trias of United States, 448 nomenclature of, 430 in Cheshire and Lancaster, 441 subdivisions of, 430 Triassic group in England, 438 Triconodon in Middle Purbeck, 383 Trigonellites latus, Kimmeridge clay, 393 Trigonia caudata, 342 gibbosa, Portland-stone, 392 Trigojiocarpum ova turn, 475 ; T. oliuaforme, 475 Trigonotreta undulata, 458 Trilobites of primordial zone, 575 —- in Devonian strata, 533 in Cambrian, 569 metamorphosis of, 575 Triloculina inflata. Eocene, 301 Trimmer, Mr., on shells of Moel Tryfaen, 158 on contorted strata, 156 on sand-galls, 82 Trinucleus concentricus (T. ornatus). Trinucleus Caractaci, 559 Trionyx, carapace of, Bern bridge, 280 Tripoli composed of Diatomaceae, 24 Tristram, M., on submergence of Sahara, 175 Trochoceras giganteum, Silurian, 552 Trophon clathratum, Clyde drift, 153 Tuffs of Ischia, 188 volcanic and trap, 6, 597 of Lower Llandeilo, 562, 564 described, 601 Tuomey, Mr., on burr-stone strata, 309 Tupaia Tana, Oolite, 405 Turner, Dr., on chemical decomposition, 41, 42 Turr Hites costal us. Chalk, 324 Turritella multisulcata, 288 Tuscany, springs from spent volcanos, 756 Older Pliocene volcanic rocks of, 666 Tyndall, Dr., on slate cleavage, 743 Tynedale fault, 64 Tynemouth cliff, limestone at, 457 Tyrol, junction of plutonic roiks with Oolitic strata, 716 Typhis pungens, Barton clay, 285 TTNCONFORMABLE stratification, 60, 61 ^ Underlying, term applied to granite, 7 Unger, Prof., on Planera Richardi, 263 on Miocene Atlantis, 2G6 on Miocene plants of Croatia, 243 on Swiss Miocene, 24G, 254 Ungulite or Obolus grit of Russia, 565 Vnio littoralis (recent), 28 la/den sis, 348 United States, Eocene strata in, 306 Cambrian strata of, 57G cretaceous rocks of, 336 coal-fields of, 493 , VOL United States, Devonian strata of, 539 Lower Miocene of, 276 Older Pliocene and Miocene formations in, 274 section of geological structure of, 494 Silurian strata of, 565 Trias of, 448 Unstratification of Nile deposits, 118 Upheaval, theory of violent, considered, 715 of calderas, theory of, 628 of the Weald, 361 Upper Greensand, 328 Miocene sea in area of Downs, 360 Val d’Arno, newer Pliocene strata of, 195 Upraised marine strata in Sardinia, 121 Upsala, erratics on modern marine drift near, 150 Ural Mountains, quartz veins of, 770 gold of, 7G9 Ursus spelteus, molar of, 135 Urville, Capt. d’, on size of icebergs, 145 ■y'AL DI NOTO, inland cliffs in, 76 ’ volcanic formations of, 658 igneous rock of, G14 Valleys, origin of, 70 transverse, of Weald, 360 Valorsine granite, 704, 705 Valvata, Pleistocene, 29 Vanessa Pluto, Croatia, 243 Vegetation of Middle Eocene period, 288 of Devonian period, 542 Veins, granite, roiks altered by, 702 mineral. See Mineral veins chemical deposits in, 766 Veinstones in parallel layers, 763 Velay, volcanic formations of, 685 Venericardiaplanicosta (cardita planicosta), 28G Venetz, M , on Alpine glaciers, 142 Ventriculites radiatus, Chalk, 327 Verneuil, M.de, on Permian flora, 4G0 on glacial drift of Russia, 149 on Lower Silurian, United States, 567 Vertebrata, absence of, in oldest fossiliferous rocks, 580 absence of, in lower rocks, 580 fossil, progress of discovery of, 583 Vesuvius, Newer Pliocene beds of, 189 age of lavas of, 651 dikes of, 656 depth of crater of, 636 Vicentin, columnar basalt in, 612 Vicenza, basaltic column near, 612 Victoria Land, erratics of, 146 Vienna basin, Upper Miocene of, 241 Vievy of volcanos of Olot, 661 of lava current of Chaluzet, 683 of Isle of Cyclops, 652 ot Gemunder Maar, 673 Virginia, coal field of, 448 Miocene strata of, 275 Virlet, M., on corrosion of rocks near Corinth, 733 on cretaceous traps of Greece, 688 on inland cliffs, 73 volcanic dikes, 6 mountains, form of, 5 Viterbo, Older Pliocene volcanic rocks of, 666 Vitreous lava, 601 Volcanic rocks of Olot, G59 breccia, 597, 598 carboniferous rocks, 689 dike at St. Helena, 610 dikes of Scily, 191 Eocene rock, 687 formation of Val di Noto, 658 mountains, form, structure, and origin of, 616 mountains, form of, 616