When You 1  â¦. Know that a bachelor degree is required for your career. 2  Have already earned more than 60 semester college credits or hold at least one associate degree. 3  Know that a graduate or professional degree will be required for your career.
Shale soils are fine-textured and tend to be acidic and low in nutrients â with largeadditions offertilizer, they are farmed. On mountainsides theyoften support mixed forests.Much of the land overlying shale deposits has been ruinedby strip mining, because shale contains Pennsylvaniaâs rich coalbeds.
Oil shale usually meets the definition of shale in that it is a laminated rock consisting of at least 67% clay minerals, however; it sometimes contains enough organic material and carbonate minerals that clay minerals account for less than 67% of the rock. Shale is a rock composed mainly of clay-size mineral grains. These tiny grains are usually clay minerals such as illite, kaolinite and smectite. Shale usually contain other clay-size mineral particles such as quartz, chert and feldspar.