Types of Source Rock
Source rocks are classified from the types of kerogen that they contain, which in turn governs the type of hydrocarbons that will be generated.
- Type 1 source rocks are formed from algal remains deposited under anoxic conditions in deep lakes: they tend to generate waxy crude oils when submitted to thermal stress during deep burial.
- Type 2 source rocks are formed from marine planktonic and bacterial remains preserved under anoxic conditions in marine environments: they produce both oil and gas when thermally cracked during deep burial.
- Type 3 source rocks are formed from terrestrial plant material that has been decomposed by bacteria and fungi under oxic or sub-oxic conditions: they tend to generate mostly gas with associated light oils when thermally cracked during deep burial. Most coals and coaly shales are generally Type 3 source rocks.
Read more about this topic: Source Rock
Famous quotes containing the words types of, types, source and/or rock:
“... there are two types of happiness and I have chosen that of the murderers. For I am happy. There was a time when I thought I had reached the limit of distress. Beyond that limit, there is a sterile and magnificent happiness.”
—Albert Camus (1913–1960)
“Our children evaluate themselves based on the opinions we have of them. When we use harsh words, biting comments, and a sarcastic tone of voice, we plant the seeds of self-doubt in their developing minds.... Children who receive a steady diet of these types of messages end up feeling powerless, inadequate, and unimportant. They start to believe that they are bad, and that they can never do enough.”
—Stephanie Martson (20th century)
“By poeticizing love, we imagine in those we love virtues that they often do not possess; this then becomes the source of constant mistakes and constant distress.”
—Anton Pavlovich Chekhov (1860–1904)
“Safe upon the solid rock the ugly houses stand:
Come and see my shining palaces built upon the sand.”
—Edna St. Vincent Millay (1892–1950)