直觉没有
发表于 2025-3-26 22:19:26
Introduction,What is economic geology? It may be defined as the study of geological bodies and materials that may be useful to mankind. The materials included are fuels, metallic and non-metallic minerals, rocks and water. This book will exclude considerations of water and building materials, and will concentrate on ores and fuels.
褪色
发表于 2025-3-27 01:45:09
Batholith-associated mineralization,Batholiths are characteristic features of cordilleran volcano—plutonic arcs at destructive plate junctures or collision belts paralleling orogenic suture zones. Important mineralization is associated with the granitoid phases of the batholiths, which vary considerably in character and composition with tectonic setting.
Dendritic-Cells
发表于 2025-3-27 08:13:10
Field Evaporation and Related Topics,trenches, volcanic peaks and sea mounts, all with different crustal and mantle structures beneath them. Despite this variability, it is possible to propose an average or standard ocean structure (Worzel, 1974). This structure varies quite dramatically from that of the continental areas (.). The sea
CRACK
发表于 2025-3-27 11:53:31
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贪心
发表于 2025-3-27 16:22:06
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Coronary
发表于 2025-3-27 19:51:15
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predict
发表于 2025-3-28 00:27:11
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Meditative
发表于 2025-3-28 04:00:52
Effekte bei Mehrelektronenatomen,ure vein and dissemination deposits associated with epizonal plutons, which have intruded older volcanic and sedimentary formations (.). The petrological and ore details vary with tectonic setting, whether in ensimatic island arcs or in volcano—plutonic arcs within ensialic cratons. The host magmas
incisive
发表于 2025-3-28 09:57:52
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冷淡周边
发表于 2025-3-28 12:50:00
https://doi.org/10.1057/9781137533746hat often there is no direct association with volcanic formations, though an indirect association can be invoked with volcanic rocks in contiguous formations. They occur in large epicontinental basins close to Archaean cratons and are assumed to have a volcanic-exhalative origin, though more distal