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a conglomerte bed as a possible lower boundary - Professor Kamal ...

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CHAPTER ONE<br />

INTRODUCTION<br />

Gali Section<br />

This section is located about 1Km to the e<strong>as</strong>t of the Chuwarta Town, at the<br />

extreme northe<strong>as</strong>tern part of the middle part of studied area (Fig.1.2 and 1.4B).<br />

Located at latitude 35 o 38 - 54.08 = and longitude 45 o 41 - 13.67 = . Dostadara and Gali<br />

section consist of four successions each more than 25 thick).<br />

1.6.2- Section of the Southe<strong>as</strong>tern Part<br />

Tawella Section<br />

It is located at latitude 35 o 25 - 48 = and longitude 46 o 02 - 41 = , at the 15km northe<strong>as</strong>t<br />

of Halabja town (Fig.1.1). The section is located directly to the e<strong>as</strong>t of Tawela town at<br />

the extreme southe<strong>as</strong>tern end of the studied area. In this area only one succession is<br />

sampled because the other succession located near the border of Iran.<br />

1.6.3- Section of the Northwestern Part<br />

Type Section (Qulqula Gorge)<br />

It is located at latitude 36 o 21 - 23 = and longitude 45 o 10 - 04 = , at the upstream of<br />

Kulkula gogre stream at the toe of Qandil mountain, 17km to the north of Qala Diza<br />

town (Fig.1.2). In this section only one succession is exposed which is about 15m<br />

thick.<br />

1.7. Methodology<br />

1- Reconnaissance survey of all are<strong>as</strong> of the occurrence of the formation to find<br />

the distribution of the outcrops of the formation. For this, topographic map of 1: 50000<br />

and Google Earth Satellite image are used. The three dimension images are<br />

compared with the topographic and geologic maps.<br />

2- Collection of available literature that concers the formation.<br />

3- Selection of suitable outcrop sections for sampling and description, this includes<br />

(type of lithology, vertical and lateral change), distinguishing sedimentary structures<br />

and stratigraphic relation of the formation with surrounding formations. The samples<br />

are taken in regular interval of about 1.5m, but in the monotonous intervals the<br />

sample spacing is incre<strong>as</strong>ed<br />

4- After removing the weathered parts, 118 fresh samples (point samples) were<br />

carefully collected from the five sections which were taken perpendicular to the strike<br />

of strat, table (1.1). The samples were broken into smaller pieces and were saved for<br />

petrographic examination under polarized and stereoscopic microscopes and small<br />

10

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