组成
发表于 2025-3-28 17:14:09
James B. Gillhend basierend auf Landbesitz, einen unvorstellbaren Luxus zu entfalten, während die überwiegende Mehrheit der Bevölkerung am Existenzminimum vegetierte. Nicht weniger dringend als die Redistribution des Volkseinkommens war seine absolute Steigerung — ein Problem, welches durch die Weltmarktabhängig
心胸开阔
发表于 2025-3-28 19:18:34
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neutral-posture
发表于 2025-3-29 02:10:11
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Choreography
发表于 2025-3-29 04:24:23
Andesite Magmas, Ejecta, Eruptions, and Volcanoes,shown in this chapter, the volcano-logic and geologic contexts of andesite seem to favor its origin by low-pressure differentiation of basalt, and the physical properties of andesite magma probably control these differentiation processes.
单调女
发表于 2025-3-29 09:27:29
Spatial and Temporal Variations in the Composition of Orogenic Andesites, Quaternary rocks by volcano (Appendix) and then averaging these by arc segment (Table 7.1). Some consistent patterns emerge from the comparisons and provide additional constraints on genetic theories.
Spinous-Process
发表于 2025-3-29 12:14:46
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CHOKE
发表于 2025-3-29 19:12:38
Conclusions,i.e., usually of plagioclase + orthopyroxene/olivine + augite + magnetite (POAM), is by far the most common and extensive process, supplemented to an unknown extent by magma mixing, selective interaction with the crust, and vapor fractionation. A typical andesite event may develop as follows.
AMITY
发表于 2025-3-29 20:38:27
0343-2181 nt information. Thus there is need for periodic overview even in the absence of a dramatic breakthrough which "solves the andesite problem" and even though new ideas and data keep the issues in a state of flux. Thus I have summarized the subject through mid·1980 from my perspective to help clarify t
尖酸一点
发表于 2025-3-30 01:14:46
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Serenity
发表于 2025-3-30 06:50:06
The Role of the Crust,taminants are similar. Thus, circumstantial distinctions between the two processes which rely on geologic situations where one is inapplicable (e.g., ARC-ATL collisions) or where one is constant but the other not (e.g., along-strike variations in crustal thickness) are useful.