压碎
发表于 2025-3-23 12:16:33
Intracratonic (intraplate) orogens granites hydrothermal deposits,ly or indirectly, to granitoids emplaced into a thick, mature continental crust as a consequence of collision and crustal extension, as well as orogenic hydrothermal deposits controlled by structures and precipitated from fluids released by dehydration in depth. The emphasis is on the rock-ore assoc
STAT
发表于 2025-3-23 15:03:35
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brachial-plexus
发表于 2025-3-23 20:06:25
Precambrian greenstone-granite terrains, of mostly Early Precambrian age, exposed in the old cratons, shields and blocks. “Schist belt” is used as a synonym, or a name for predominantly meta-sediments dominated equivalents of the “greenstone belts”. De Wit and Ashwal (1995, 1997) identified at least 260 Archean greenstone/schist belts wor
开头
发表于 2025-3-24 01:59:43
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Original
发表于 2025-3-24 03:15:12
Rifts, paleorifts, rifted margins, anorogenic and alkaline magmatism,f grabens of which this was a part (the East African Rift system). Since then, until the onset of plate tectonics in 1968, “riftology” became an established branch of geotectonics and a fairly mature one in terms of global inventarization and description of the visually discernible (i.e. mostly geol
粘连
发表于 2025-3-24 09:30:05
Sedimentary associations and regolith,ter 5); sediments in island arcs and Andeantype continental margins (Chapters 5 and 6, respectively), sedimentary rocks in the volcanosedimentary orogens (Chapter 9) and in early Precambrian greenstone belts (Chapter 10), in Proterozoic-style intracratonic settings (Chapter 11) and in rift settings
僵硬
发表于 2025-3-24 14:36:04
Higher-grade metamorphic associations,orphosed rocks in the field, except for tectonic boundaries. Most of the earlier chapters, identified by names of pre-metamorphic associations, included some metamorphic equivalents as well, through the greenschist facies at least. This is a general practice in geological organization and descriptio
fidelity
发表于 2025-3-24 17:56:02
Giant deposits in geological context,-stage process to a prolonged, multistage history of gradual metal addition, reconstitution and modification. The opposite, metal dispersion (Holland and Petersen, 1981), is also at work and this can take place anywhere during the ore formation history and disperse (dissipate) a promising metal enri
excursion
发表于 2025-3-24 20:09:30
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专横
发表于 2025-3-24 23:53:50
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