Skład granulometryczny skał okruchowych a ich pochodzenie

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Rilc.B. Zmiafty, g~'bo1colc' 4f14 mo,.Bkiftgo 1» 1»ezulu (otto6r Gorz61D Wlkp.).

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~uIowce.

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sea bottom depth at the Vesulfan

, , ' "me' (bore hole , GorzawWtelkopolBkt).

1 - ssndstones. 21 - 'claystones. I - inudStones.

sj~ 'morza wezulskleg() obrazuJIl pt6bki z doInego wezulu w otworze Piekary. Dwle pr6bkl w' obr~bie

I'm zostaly osadzone kolejno na gI~boko§cl 151100 m.

, 'OdmJennll' sytuacj~ obserwuje si~, badajllc metodll Passega piaskowce doggeru z wlercenia ~kowa. Skaly

,te, 0 zmieniajllC(!j sl~' wCilli gruboAci ziarn, wskazujli na szybkle pogl~bianle I spiycanle zblornika morskiego.

LITERATURA '

"I.'·Bolewski 'A;, Turnau-Morawska

M.-Petrografia, 'Wyd. Geol. 1963.

" 2. , Doe g I a

s

D. -- Interpretation of the results of , , meChanical analyses. Journal of Sedimentary

Pe-, 'trology, 1946, v. 16, nr I, Tulsa, Oklahoma.

3., F e,u c h t b a u er, H: -- Zur Nomenklatur der

, , "Sedimentgeateine. Erdoel und Kohle, i959, V. 12,

" qr. 11.

4. F 01 k R. - The ,distinction between grain size and

, mineral composition in sedimentary rock nomen-, 'clature. The nomen-,Journal of Geology.nomen-, 1954nomen-, v. 62" nr 4. 5. Folk R., ' Ward W. - Brazos River bu: a

, ' '. study in the signfficance of grain, size parameters.

, " "Journal' of Sedimentary Petrology, 1957, vol. 27,

, . nr I, Tu1Ba, Oklahoma.

6. F r 1

e

d m a n G. ~ On sorting, sorting coeficlents, and the lognormality of grain' size distributions of sandstones; Joutnal of Geology. 1962, vo!. '70, 'nr 6-.

, 7 ~ I: n

In

a Ii O. ~ Measures for describing the size

distribu~on,of ~~ents. Journal of Sedimentary

'Petrology, 1952, voL 22, Tulsa, Oklahoma. ' ,

8. ,K,~linko M. K. - Piesczanyje porody. Spra':'

wo~noje ,rukowodstwo po pletrografil

osadocz-': . nY,ch porC?d.,

or.

2. Leningrad 1958. " 9:

:N

I g g I

i

,P. ~ Gesteine' und Minerallagerstltten,

I,,~asel, 1948. .

10. Pas s e g a R. '- T~ure as characteristic of

clas-,tic desiJosition. Bull. of the Amer .. Ass. of P'etr.

,gE!910g.11957, vol. 41, nr 9, Tulsa, Oklahoma. 11.' Pas s e g a R. -- Analyses granulom~triques, outll

g6010gique pratique. Revue de l'Institut Francais du Ntrole, 1963, vol. 18, or U.

12. Pas s e g a R. -- Grain size representation by CM

"patterns as a geological tool. Journal of Sedimen-tary Petrology, voL 34, Menasha, Wisconsin 1964. 13. Ruc h i n L. -- Osnowy lltologU.

Moskwa-Le-'ningrad 1947.

"

,

118

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r , " " 11 2D -.l--r- T ' 1 , J I 40

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80 _L~ 1 I 80 _.1

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100~L-______________ ~

r : .: : :

.:1' /

.

( ': 0]2

Ryc. 10. Zmtany gll1bokolci dna morBkiego 1» bato-nie (otw6r Bqk01Da).

1 - piBskowce. 2 -' p1aakowce zleplencOwBte.

Fig. 10. Change. of sea bottom depth at the

Batho-man

ttme (bore hoZe Bqkowa).

1 - sandstones, 2 - conslomerate sandstones.

14. Ruc h i n L. -- 0 klassifikacji oblomocznych po-rod i slagajemych imi porod. Wiest. LGU, nr 24, .Leningrad 1956.

15. S c hn e i d e rho e h n P. - Untersuchungen -zur Siebanalyse von Sanden und zur Darstellung ihrer Ergebnisse. Neues Jb. Miner. Abh. Bd. 85, H.2, Stuttgart 1953.

16. S t r a c how N. -- 0 granwomietriczeskom mie-todie lzuczenlja pleskow prof. L. B. Ruchina. Izw.

AN SSSR, sur. gioot nr 3. Moskwa 1948.

17. Trask P. -- Origin and environment of source sediments of petroleum, Houston, Texas 1932. 18. Unrug R., Calikowski A: - SedJmentacja

1 petrografia warstw polomsklch. Rocz. PTG, 1960,

t. 30, z. 2. '

SUMMARY

There is a great divergence in classifications of rocks according to granulometrical composition. Controver.:. sial are both the boundary between the -Individual fractions and the interpretation of the results of gra-nUlometrlc: analyses. In 1932, Trask presented a tech-nique of c~lculating the sorting coefficient of sand and the asynunetry coefficient, and illustrated ~he results of granulopletrlc an8lyses o,n histograms. It has com-monly been: ac~pted to present, the granulometric composition 'Of rocks in the form of cumulative curves, the shape and course of which are connected wlth the origin of deposit (Nlggli, 1952). Basing on the sorting coefficient of sand and on the cumulative curves, Ruchln presented a diagram (1953), on which he distinguished the fields of fluvial, near-shore, bottom and eollan sands. On the basis of 10 000 samples

stu-died, Passega (1957, 1963) gave a method of determi-ning the depth, at which the rocks in study had been deposited.

In addition, the paper gives alSo some technique of

genetical interpretation of granulometrical composit-ion of clastic rocks, and the examples of using the Passega's method in examination of the Dogger ro'cks from bore-holes Gorz6w Wlkp. and Bllkowa.,

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