The newly discovered mineral showing consists of mini-quartz stockworks, brecciation
and quartz/chalcedony alteration.
PU-RC-94 returned geochemically anomalous values of As, Sb, Cu and Mo, related to a hydrothermal brecciation
with quartz, tourmaline, chalcocite and molybdenite, typical of a porphyry system.
The front part of this limestone shows megaslab internal deformation, brecciation
and folding, as well as soft sediment deformation in the shale matrix.
The horizon and the enclosing rocks were affected by structural forces and display fracturing and brecciation
in almost all units within the horizon.
In addition to sandpatch cycles, various forms of syn-Blomidon salt-dissolution features are present, including collapse and growth bowls (Olsen and Et-Touhami 2008) and larger-scale brecciation
and collapse structures (Olsen et al.
1) In-situ brecciation
of allochemical constituents
I use the geological metaphor of brecciation
drawing upon the work of Sigmund Freud to elaborate on how materials from the past and the present are jumbled in a nonlinear fashion to enable spatial multiplicity.
Also drilling has revealed brecciation
and silica-sulphide flooding accompanied by tongues of mineralised felsic dykes in mineralised metasediments along the 1.
2012): An atypical mechanism of carbonate brecciation
caused by tectonism in carbonate-sulfate deposits: evidence from the Oncala Gr (Berriasian, N Spain).
Barney - follow-up drilling of a hole that intersected intense alteration and extensive brecciation
, as well as anomalous pathfinder elements (e.
of ore and footwall rocks probably occurred by slumping of ore and host rocks from the active margin of the evolving grabens (Fig.
The metal-bearing solutions which filled clefts and fissures in the porphyrites, creating the ore veins, percolated also into the most narrow openings, forming impregnation zones characterized not by discrete veins but by dense "nests" of stringers and pods (Trumem), and causing some brecciation
of the porphyrite.