When rocks are subjected to intense heat and pressure, the minerals within them undergo chemical and physical changes, causing the rock to transform into a new type of rock with different characteristics. This process, known as metamorphism, occurs deep within the Earth's crust where temperatures ...
Different types of Paleogene source rocks and characteristics of pyrolysis gas generation of crude oil in Zhuyi Depression, Pearl River Mouth Basindoi:10.16028/j.1009-2722.2022.044Zhu Ⅰ DepressionHZ26-6gas generating mechanismsemi-deep lacustrine source rocks...
Volcanic and plutonic rocks are divided further on the basis of chemistry and mineral composition. The classification scheme below is based on chemistry, and is perhaps the simplest method; there are many other classification methods for igneous rocks. These rock types all have different characteristi...
Two fluorescence parameters, I 20 546 and R were suggested, which can be taken to divide the amorphous kerogen into five types: algae amorphinite, biodegraded amorphinite A, B, C, and humic amorphous. On the basis of this, the Rock_Eval analysis results of source rocks were used to ...
Their density and magnetic susceptibility have been determined. It was established that the rock types are clearly differentiated with respect to their physical parameters. The identified relationship allows one to use these physical properties, first of all, for the geological interpretation of the ...
and Hf.The REE patterns are characterized by LREE enrichment,flat HREE,and negative Eu and Ce anomalies.Characteristics of samples from the Xiashihezi Formation show that rocks in the source come from upper crust and mainly consist of felsic rocks with a small amount of granite.And source ...
the rationality of the methods proposed in this study is also verified. These results indicate the proposed brittleness indexes can reflect the brittle characteristics of the rock and the whole process of deformation and failure of the rock. Accordingly, these methods seem to offer reliable evaluation...
395 samples collected from 70 wells in the major depressions of the Subei Basin are analyzed in this paper. Combined with the previous data analyzed, we systematically studied the geochemical and lithological characteristics, accumulation space types and their distribution patterns as well as reservoir...
Based on the results, we can predict the initiation of three types of cracks: medium, radial, and lateral cracks (Chiang et al., 1982a, 1982b). In conclusion, rock indentation process has been a hot topic and attracted many scholars. However, the indenter used in previous studies usually...
Figure 2.Field geological characteristics of the Paleogene-Neogene strata in the Lingwu area 下载:全尺寸图片幻灯片 彰恩堡组(N1z)整合覆盖在清水营组(E3q)之上,其岩性主要为桔红色泥岩、粉砂质泥岩,夹少量石膏脉(图 2-b),底部见少量桔红色长石石英砂岩。研究区南部彰恩堡组产脊椎动物(哺乳类、爬行类)...