Suha's territory
Sedimentary Petrology의 어려움 본문
Most igneous and metamorphic rocks are equilibrium or near equilibrium assemblages of minerlas. The mineral species present in such rocks are controlled by the laws of physical chemistry applied to the bulk chemical composition of the magma or pre-existing rocks.
In contrast, sandstones are invariably non-equilibrium mineral assemblages and, therefore, the mineralogic character and origin of each sand grain must be considered as independent of surrounding grains.
For this reason sedimentary petrology is a more difficult field of study than igneous or metamorphic petrology.
(!!!)
- Harvey Blatt, (1967), Journal of Sedimentary Petrology 37, 1031-1044.
In contrast, sandstones are invariably non-equilibrium mineral assemblages and, therefore, the mineralogic character and origin of each sand grain must be considered as independent of surrounding grains.
For this reason sedimentary petrology is a more difficult field of study than igneous or metamorphic petrology.
(!!!)
- Harvey Blatt, (1967), Journal of Sedimentary Petrology 37, 1031-1044.
오랫만에 (전에 손댔다가 마무리를 안한 걸 하느라) 다시 sedimentary petrology를 들여다보니, 정말 어려운 점이 많다. 눈에 보이지 않아서 답답하지만 차라리 chemistry 쪽이 나은듯!
공감가는 말을 발견해서 반가워 적어본다.