Page 131 - Petrology of Sedimentary Rocks

IDEALIZED GEOSYNCLINAL CYCLE IN MOBILE BELTS
Modified slightly from Bertrand, Shvetsov, Krynine, Stille, Kay,
Petti john, etc. This cycle is a common one in many areas (Pettijohn,
1957) -- but some parts may be omitted or repeated; some parts may occur
independently and without “system.” As well as a “time” sequence, this may
be a “space” sequence -- i.e., at any given time, part of the Kraton-mobile
belt couple may be in one stage, and part may be in another.

ejuvenat i’

. . . .
/
I
tabil ity Continental,
+ Paralic +
eneplana- Shallow Marine
tion

Vertical
Deformat iI
(normal
faulting

Collapse (
Deformat ion
old geosyl
cl ine +
intrusion
Paralic -2
+ G
Shallow ;
Marine ,’

Marine;
Turbid- l T
i tes fc
common ; ”
some z
:
Little “abyssal G
Detrital sed.
Influx L
Euxinic /
or /’
.’
/‘Open Marine
,
Germanic form
of Craton:
Kraton (usually Stable; Dune- Supermaturf
plutonic) low Beach- Quartzaren
rel ief Shallow Subarkose
Marine Carbonates
Major Type of Tecton its Dominant Common Rock Common Thick-
Source Depositional of Environments Types Textural ness
Site Source Maturity

125