Projekt: Bestände der Universitätsbibliothek Freiberg
LDP: UB Freiberg Druckschriften
Strukturtyp
Band
Parlamentsperiode
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Wahlperiode
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Titel
Chap. V. Theory Of The Diminuation Of The Waters Of The Globe. - Description Of Overlying Formations. - An Investigation Of The Contents Of The Original Waters Of The Globe During The Different Periods Of The Earth's Formation. - The Division Of Rocks Into Five Great Classes
INTERNAL STRUCTURE. luftre, and r has therefore the moft highly cry flak line ftrudture of the whole feries. Does not this 1 highly cryflalline ftrudture correfpond moll inti mately with a calm date of the folution ? The next member of the feries, which is ftill cryftal- line, but with fmaller diftindt concretions, occurs in Mica-llate; and, ftill lefs cryflalline, or with fmaller diftindt concretions, in the oldefl Clay- flate. In the Newer Clay-flate, on the contrary, the diftindt concretions are fo fmall, as only to be difcoverable by their glimmering and tranfluci- dity. The white colour which hitherto [charac- terifed the older limeflone, is now intermixed with black, red, &.c. •, and the newefl members of this formation,, form the tranfition to the products of the next period. In the Tranfition period, the limeflone is compadt, tranllucent, glimmering, and variegated or marbled. The Floetz-limeftone contains feveral formations that refemble each other very much, and differ principally by the newer being more earthy than the older. To thefe fucceed, as wc have already mentioned, Chalk and Calc-tuff, which are in ge neral ftill more earthy in their external appear ance. It is not enough to detail the differences and agreements of this great feries ; we muft alfo en deavour to difcover how thefe have been produced. The whole feries, as has been already obferved, is completely chemical, yet the different members have