Hydrothermal breccias in vein-type ore deposits: A review of …
1997年12月1日 — Hydrothermal breccias develop early during vein formation in response to the fracture propagation process. This process is well documented in structural geology studies (Scholz, 1990) and is one of the most common mechanisms of brecciation. Fracture propagation can be observed at all scales, from millimeter-sized fractures to kilometer-long ...
(PDF) Hydrothermal breccias in vein-type ore deposits: A review …
1997年11月30日 — A review of the main brecciation processes occurring in hydrothermal vein-type deposits allows for the discrimination between chemical and physical mechanisms, including tectonic comminution,...
A brief review on breccia: it's contrasting origin and diagnostic ...
2018年6月1日 — A breccia is formed by the intrusive action of magma followed by the mineralization is termed as ‘pre-hydrothermal’ (Bryner, 1968). The hydrothermal processes (e.g., re-crystallization and dissolution) readily affect the carbonate-rich breccias and eventually obscure the indicators of their origin.
Hydrothermal breccias in vein-type ore deposits: A review of …
1997年12月1日 — A review of the main brecciation processes occurring in hydrothermal vein-type deposits allows for the discrimination between chemical and physical mechanisms, including tectonic comminution, wear abrasion, two types of fluid-assisted brecciation (hydraulic and critical), volume expansion or reduction, impact and collapse.
Hydromagmatic activity is responsible for breccia pipe genesis. The two-end member styles of hydromagmatic breccias are phreatomagmatic and phreatic ones.
Breccia Types: Hydrothermal, Fault, Volcanic, ETC - ResearchGate
2016年6月10日 — PDF | Breccia Type: 1. Igneous Cemented Breccias (igneous matrix breccias) 2. Open-Space Filling, Hydrothermally-cemented... | Find, read and cite all the research you need on ResearchGate
Geology and Geochronology of Magmatic–Hydrothermal Breccia …
2024年5月8日 — Magmatic–hydrothermal breccia pipes are widespread in numerous major porphyry and epithermal gold deposits globally, representing significant repositories of metal resources and serving as potential indicators for exploration targeting. More than ten breccia pipes occur in the Central Taihangshan District (CTD) of the North China Craton.
(PDF) Hydrothermal breccia pipe structures: general features …
2003年6月1日 — Phreatic and phreatomagmatic breccias are the two end-member styles of hydromagmatic breccias. A previous contribution deals with phreatomagmatic breccias with an emphasis on their general features...
(PDF) Hydrothermal breccias in vein-type ore deposits: A review …
Breccias are among the most widely distributed rock textures found in hydrothermal vein-type deposits. Previous studies have mainly been interested in developing qualitative descriptive approaches, leading to a confusing profusion of terms.
Ore-related breccias in volcanoplutonic arcs - GeoScienceWorld
Release of magmatic-hydrothermal fluids from high-level hydrous magma chambers during second boiling and subsequent decompression generates a spectrum of breccia types in which fragments may suffer collapse and/or ascent.