 | Sir Charles Lyell - Geology - 1833 - 570 pages
...Sand coloured green by an admixture of the simple mineral chlorite. Etym., (.-Xw/joc, chloros, green. COAL FORMATION. This term is generally understood to mean the same as the Coal Measures. See Table II. L, p. 393. There are, however, ' coal formations' in all the geological periods, wherever... | |
 | Sir Charles Lyell - Geology - 1834 - 420 pages
...family, usually fissile. It is sonorous when struck with a hammer, whence its name. COAL FoaMATioN. This term is generally understood to mean the same as the Coal Measures. See Table II. L, p. 313. There are, however, " coal formations " in all the geological periods, wherever... | |
 | sir Charles Lyell (bart.) - 1835 - 440 pages
...term is generally understood to mean the same as the Coal Measures. See Table I., M, Vol. IV. p. 312. There are, however, "coal formations" in all the geological periods, wherever any of the varieties of coal forms a principal constituent part of a group of strata. COLEOPTERA. An order of insects (Beetles)... | |
 | Virginia Geological Survey - Geology - 1836 - 552 pages
...rock of the Trap family, usually fissile. It is sonorous when struck with a hammer, whence its name. Coal Formation. — This term is generally understood...Conformable. — When the planes of one set of strata are generalry" parallel to those of another set which are in contact, they are said to be conformable.... | |
 | Sir Charles Lyell - Geology - 1837 - 500 pages
...term is generally understood to mean the same as the Coal Measures. See Table I., M, Vol. IV. p. 805. There are, however, " coal formations " in all the...geological periods, wherever any of the varieties of coal forms a principal constituent part of a group of strata. COLEOFTERA. An order of insects (Beetles)... | |
 | sir Charles Lyell (bart.) - 1840 - 504 pages
...trap family, usually fissile. It is sonorous when struck with a hammer, whence its name. ••ftCOAL FORMATION. This term is generally understood to mean the same as the Coal Measures, or Carboniferous group. COLEOPTERA. An order of insects (Beetles) which have four wings, the upper... | |
 | John Lee Comstock - Geology - 1847 - 434 pages
...rock of the trap-family, usually fissile. It is sonorous when struck with a hammer, whence its name. COAL FORMATION. This term is generally understood to mean the same as the Coal Measures, or Carboniferous group. COLEOPTERA. An order of injects (Beetles) which have four wings, the upper... | |
 | Sir Charles Lyell - Geology - 1854 - 870 pages
...being erustaceous and forming a shicld. Etym., to\tos, coleos, a sheath, and Ttrcfov, pteron, a wing. CONFORMABLE. When the planes of one set of strata are generally parallel to tliose of another set which are in contact, they are said to be conformable. Thus the Flg.9i -^- ^»... | |
 | Missouri. State geologist, George Clinton Swallow - Geology - 1855 - 496 pages
...from those of stratification. Coal FarmaUnn. This term is generally understood to mean the same as Coal Measures. There are, however, "coal formations"...generally parallel to those of another set, which arc in contact, they are said to be conformable, but when the planes are not parallel they are non-conformable.... | |
 | Sir Charles Lyell - Geology - 1865 - 880 pages
...forming a shield. Etym., xoAnc, ed<ot, & sheath, and iTtfor, pteron, a wing. CONFORMABLE. When tho planes of one set of strata are generally parallel to those of another set which arc in contact, they are said to bo conformable. Thus the CONGENERS. Species which belong to the same... | |
| |
Trap family, usually fissile. It is sonorous when struck with a hammer, whence its name. Coal Formation. — This term is generally understood to mean the same as the Coal Measures. There are, however, 
