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Titlebook: Igneous Petrogenesis; Marjorie Wilson Book 1989 Springer 1989 Petrogenesis.Reservoir.chemical analysis.chemistry.classification.formation.

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樓主: Forestall
41#
發(fā)表于 2025-3-28 17:42:22 | 只看該作者
42#
發(fā)表于 2025-3-28 21:01:32 | 只看該作者
43#
發(fā)表于 2025-3-29 00:33:51 | 只看該作者
Continental tholeiitic flood basalt provincespast 1000 Ma, apparently fed from fissures rather than central vent volcanoes. These are referred to as continental flood basalt provinces or CFBs. Originally they were considered to be characterized by the eruption of chemically uniform Fe-rich tholeiitic basalts (Kuno 1969). However, as we shall s
44#
發(fā)表于 2025-3-29 04:45:22 | 只看該作者
Continental rift zone magmatismthe dominantly fissure-fed sub-alkaline (tholeiitic) flood basalt provinces, whereas in this chapter we shall concentrate on those more alkaline provinces, closely associated with rift/graben structures, fed from both fissure and central vent activity. As we have previously stated, this is a totally
45#
發(fā)表于 2025-3-29 09:30:30 | 只看該作者
Potassic magmatism within Continental plateshin the upper mantle (Ch. 3). The degree of partial melting and the depth of segregation of the magmas are considered to be the main variables in controlling the composition of the melt. Additionally, variations in the volatile content and mineralogy of the source mantle, and the extent of subsequen
46#
發(fā)表于 2025-3-29 12:33:04 | 只看該作者
Processes which modify the composition of primary magmases en route to the surface, during transport and subsequent storage in high-level magma chambers. These processes are of fundamental importance in producing the diversity of igneous rocks presently exposed at the Earth’s surface.
47#
發(fā)表于 2025-3-29 19:05:34 | 只看該作者
48#
發(fā)表于 2025-3-29 22:07:19 | 只看該作者
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