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Journal Article

Porphyry Mo mineralization related to adakite-like magmas in an intra-continental extensional setting at the Aolunhua deposit, northeastern China

Hegen Ouyang, John Caulfield, Xinghua Ma, Tao Zou, Xiaohu He
Journal: GSA Bulletin
Published: 07 March 2025
GSA Bulletin (2025)
DOI: https://doi.org/10.1130/B37626.1
...), discovered in an extensional setting and intimately associated with differentiated adakite-like rocks, at Aolunhua in northeastern China. Crosscutting relationships between intrusions and offset veins indicate that the Mo-related intrusions at Aolunhua comprise at least seven units, which were emplaced...
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Modal analysis of intrusions in and around the Sierra Crest graben-vent system, divided by crosscutting relations; these are otherwise undated, except for the olivine basalt intrusion on Disaster Peak, which is inferred to represent a rift (rather than arc) intrusion (Fig. 5). Based on geochemistry and close spatial association with Table Mountain Latite, the trachybasalt intrusion is inferred to be one of the feeders for Table Mountain Latite. Most of the intrusions shown here are spatially closely associated with Disaster Peak Formation in the northern half of the Sierra Crest–Little Walker volcanic center, which remained tectonically and volcanically active at this time, and probably represent feeders for the volcanic rocks. Cpx—clinopyroxene, Opx—orthopyroxene, GM—groundmass.

Modal analysis of intrusions in and around the Sierra Crest graben-vent sys...

Published: 07 August 2018
Figure 8. Modal analysis of intrusions in and around the Sierra Crest graben-vent system, divided by crosscutting relations; these are otherwise undated, except for th