48 MIDDLEMISS : GEOLOGY OF HAZARA AND BLACK MOUNTAIN. 



(5) If the first part of (4) is answered in the affirmative, what 

 was the date of the metamorphism affecting them, and was 

 it or was it not caused by the intrusion of the gneissose- 

 granite, assuming the existence of the latter? 

 Mr. Wynne's references to these rocks are mainly restricted to 

 two of his- papers, in the latter of which (without 

 encl^oTh y e D se^ocks! er " suffici 'ent cause in my opinion) he comes to an 

 opposite conclusion to the one arrived at in the 

 former. 

 In 1877 1 he describes them under two headings, (r) crystalline, (2) 

 metamorphic. The former he describes from the Pakli Valley, Susal- 

 gali, etc., as "Syenitic rocks, granitoid porphyry, and greenstones/' 

 The granitoid or granitic porphyry, he adds, is exactly like that occur- 

 ring in erratic masses near Nowshera in the Jhelum Valley, presum- 

 ably derived from the Kajnag range, etc. ; and he also mentions in a 

 foot-note that Dr. Stoliczka recognised a block of it occurring in the 

 Jhelum at Hutti Kashmir as being similar to his so-called albite- 

 granite. 



The latter (metamorphics) he (Wynne) describes as slightly meta- 

 morphosed, dull, talcose, silky slates, lying outside the Hazara gran- 

 itoid rocks, and which he believes to represent the Attock slates. 

 He also mentions greenstone dykes intersecting the slates, and syenitic 

 protrusions ; but he adds that no stratified or foliated gneiss nor 

 any mass of quartzites or mica schists were met with by him, though 

 such were known (he remarks) to Dr. Fleming. Ke also mentions 

 crystalline marble and sub-crystalline compact to pseudo-brecciated 

 limestone of the Gundgurh range as occurring among the slates. 

 He found no fossils in these metamorphic limestones, but near Dakner 

 he records " obscure traces," and further west at the Mirkulan pass, 

 he says, a few fossils can be distinguished (but see ante, page 13). 



In the second paper of later date 2 Mr. Wynne speaks in a more 

 guarded way of the " granitoid gneiss of Hazara," and no longer re- 

 fers to granitoid porphyry or syenite. He is inclined to think there 



1 Rec. G. S. of I., Vol. X, p. 113. 

 3 Rec. G. S. of I., Vol. XII, p. 116. 



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