|Table of Contents|

Geochemical Characteristic of Intrusion Rocks in Coal-series Hydrocarbon Source Rock of Carboniferous-Permian Under Jiyang Depression(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2011年第02期
Page:
111-116
Research Field:
基础地质与矿产地质
Publishing date:

Info

Title:
Geochemical Characteristic of Intrusion Rocks in Coal-series Hydrocarbon Source Rock of Carboniferous-Permian Under Jiyang Depression
Author(s):
JIN Qiang1; YANG Kai1; WAN Cong-li2
1. School of Geosciences, China University of Petroleum, Qingdao 266555, Shandong, China; 2. Oil Transportation Company, Shengli Oilfield Branch Company, China Petroleum andChemical Corporation, Dongying 257015, Shandong, China
Keywords:
Carboniferous-Permian;  intrusion rock;  geochemical characteristic;  diorite porphyrite;  lamprophyre;  Gubei Area;  Jiyang Depression
PACS:
P588.12;P595
DOI:
-
Abstract:
The Carboniferous-Permian sediments are distributed with eroded residual status under the Bohai Bay Basin; there were shallow intrusion rocks in the sediments with oil/gas. Through the geological and geochemical characteristic analysis on the distribution, main elements and trace elements in the intrusion rocks, the diorite porphyrites were richer in SiO2 and Na than that of the lamprophyres and both were rich in K and Mg for the intrusion rocks; the above rocks were very similar to the rocks of the same strata in Luxi uplift. The results showed that the intrusion rocks were formed because the earth upper mantle matter rose and intruded along the discordogenic fault at the beginning of Jurassic fault depression, and intruded in coal-series hydrocarbon source rocks in the form of magma rich in K with meta alkaline or meta neutral; the intrusion were small, and the ranges of roast on hydrocarbon source rock were less than the thickness of the intrusion, so that the intrusion had little influence on hydrocarbon generation from the coal-series hydrocarbon source rocks.

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Last Update: 2011-06-20