الفهرس 
HISTORICAL REVIEWOnly 14 pages are availabe for public view
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Abstract
1 NTRODUCT 1 ON
The firm r;’latiOIJ between Geolcgicdl rockn and blacK
from the Iat1n1.-: namp(1] petra olPnm v.•h1ch
mean rcc’K <=~nd c 1 1. So may can say th~t r·ocKs and oil arc
two face of one co.lll dnd tlH~Y can not be .separated from each
other.
The importance of rocks to petroleum origir.ated from
t:tlose questions, where does petroleum come from ? Bow does
it accumulate 1n oil fields ? Those two questions have
long puzzled geologists, and nave no completely satisfactory
answer, but the theory cf organic orig1n ()f petroleum I~
accepted by most sc1entists today(2J.
Roc}{s retain the oil under the ground until PXploration
i. e. 1t serve as a container (traps] beSides theY serve as
a guide which determines the trace of· thf’ oil under the
gr·ound .surface layers. ”rhree major gronps of roc}{ maKe up
the crust of the earth;
’T’hcsc
metamorphic, Igneous, and
include l1mestone and sha 1 P
rocKs, which .1s the subject of the present study.
1. 1. 1 Hetamorph1c RocKs:
Metamorphic rocks are preexi::>tlnr, rocK.s massf’s 1n Wh1ct1
new minerals, or textures, or structures are iormPd at
1