Preliminary Geology And Petrography Of Swat Kohistan
Preliminary Geology And Petrography Of Swat Kohistan
Preliminary Geology And Petrography Of Swat Kohistan
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Dewangar Granite ? Middle Porphyritic Granite<br />
Mati1ta.n Grani ta T.ertiary Granite, at places gneissme<br />
? Early to Middle Q~~artz diorites, granites and<br />
The Gabral Plutonites Tertiary minor granodiorite<br />
c--- ------<br />
The Deshai Diorites<br />
I<br />
I<br />
? Early Tertiary<br />
L---<br />
Quartz diorites, amp biboli tes,<br />
biotite-gneisses, granite end<br />
metagabbroa<br />
The Utror Volcanic~<br />
Creto -<br />
Paleocene<br />
Sjlicic to intermediate lavats<br />
ignirnbrjtea, tuffs and<br />
agglomorntes<br />
1 1 Noritos, diorites, bands of<br />
Basic Complex I 1 Late Crotzceoas pyrosenites/anorthosii:es, and<br />
minor amphibolite~ and<br />
granite<br />
T ~ Xalarn B Group<br />
Carboniferous to<br />
? Siluro-Devonian<br />
Micaceo\xs quartzites, siliceous<br />
schists, phyllite, siltstone,<br />
shale and limestono<br />
The Ralarn Group, exposed in the vici:lit;y of liialnm and Uehu, includes<br />
the only diatimt sedimentary rocks CFF the area. The group (named by<br />
Matsushita, 1966) is composed of abonden t micaceous quartzites, ailiceow<br />
E<br />
~chist~s, and associated phyllites, overlain by siltstooe/sbale and hmestor~e.<br />
One of the beat sections is exposed in ~arandukni stream, about two milcv<br />
south-weat of Kalam. The quartzites and schists seem to be many thoustud<br />
feet.thick and are folded The phyllites are even more deformed here; their<br />
thiokness may be a fern hundred feet. Tlie overlying sil tatonelahole saaociation<br />
is approximately 400 to 500 feet and the limestone about 160 feet thick. TO<br />
tfhe northeast, the latter two greatel? diminish in thickness and, in the Ushu<br />
area, only the shales and ailtstones~aro seen in inconspiouous bed..<br />
Th9 ganentl