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10 LIBRI IN INGLESE ASSOCIATI CON «SILICIFICATION»
Scopri l'uso di
silicification nella seguente selezione bibliografica. Libri associati con
silicification e piccoli estratti per contestualizzare il loro uso nella letteratura.
1
Geologic Evolution of the Barberton Greenstone Belt, South ...
The former show ubiquitous evidence of extremely early, nearly syndepositional
silicification prior to sediment compaction whereas the latter were widely silicified
after sediment compaction. Platform association. Most platformal sediments ...
Donald R. Lowe, Gary R. Byerly,
1999
2
Microfacies of Carbonate Rocks: Analysis, Interpretation and ...
Aspects of silicification are shown in –> 7 and 8. 1 Pyrite: Framboidal pyrite in
residual clay seams of stylolites. The rounded aggregates consist of many tiny
euhedral crystals. The size distribution of framboidal pyrite is a measure of redox
...
3
Palaeoweathering, Palaeosurfaces and Related Continental ...
MAIN TYPES OF CONTINENTAL SILICIFICATION Most supergene silicification
features described, both in ancient sedimentary series and in modern
landscapes, can be grouped into three main types. 1 Pedogenic silicification. It
occurs with ...
Medard Thiry, Regine Simon Coincon,
2009
4
Biological Materials of Marine Origin: Invertebrates
The more realistic scenario seems to be that of the silicatein playing a role in
sponges similar to that of acidic proteins in calcification or silaffins in silicification
in diatoms, where chitinous networks are believed to be the main scaffolding ...
5
Biomineralization: From Nature to Application
An example of non-genetic control is the extent of silicification in a given diatom
species, which can vary by up to nearly 4-fold [47,127–129]. A major controlling
factor is growth rate; in general, limitation of diatom growth rate by a variety of ...
Astrid Sigel, Helmut Sigel, Roland K. O. Sigel,
2008
6
Diagenesis in Sediments and Sedimentary Rocks
Hydrothermal waters may assist such temperature rise, and silicification is a
marked feature of deep-seated faults. Silicification involves the cementation, or
complete replacement of sedimentary particles or fossil remains, by silica, usually
in ...
Gunnar Larsen, George V. Chilingar,
1983
7
Taphonomy: A Process Approach
Hydrothermal vents may have also been rich sources of silica in the Precambrian
, and associated elevated geo- thermal gradients may have contributed to
silicification in the absence of evaporation (Simonson, 1987). Other trends in ...
8
Low-Temperature Geochemistry
1 EXPERIMENTAL STUDIES ON THE DISSOLUTION TRANSPORT-
PRECIPITATION OF GOLD UNDER LOW TEMPERATURE HYDROTHER- MAL
CONDITIONS The close tempo-spatial relationship between silica ( quartz vein,
silicification ...
9
Introduction to Geomicrobiology
What he showed was that at temperatures of ~100°C several months were
required for com- plete silicification, and only slight alteration to the cells occurred
, while at higher temperatures (165°C) the cells mineralized quickly, but the
filaments ...
10
Ground Support in Mining and Underground Construction: ...
silicification. of. microorganisms: a. comparison. between. in. situ. experiments. in
. the. field. and. laboratory. Liane G. Benning School of Earth Sciences, University
of Leeds, Leeds, UK Bruce W. Mountain Institute of Geological and Nuclear ...
Ernesto Villaescusa, Yves Potvin,
2004
10 NOTIZIE DOVE SI INCLUDE IL TERMINE «SILICIFICATION»
Vedi di che si parla nei media nazionali e internazionali e come viene utilizzato il termine ino
silicification nel contesto delle seguenti notizie.
Uravan Intersects Uranium Mineralization at Stewardson
The uranium-bearing intersection is coincident with a 30 m thick envelope of lower sandstone clay alteration and bleaching, silicification, secondary hematite ... «Stockhouse, lug 15»
Columbus Gold Provides Update on Eastside Gold Project Drill …
Areas with hydrothermal alteration, particularly silicification and quartz veining, have been mapped, and sampling of all these altered areas is in progress with ... «Canadian Mining Journal, lug 15»
Caza Gold Commences 2015 Drilling on Los Andes Project …
The alteration zone, some 400 m long by over 100 m wide, has primarily massive silicification along with brecciation. The Company plans to drill two scout holes ... «Stockhouse, lug 15»
Avrupa Drills 57.35 Meters of 2.09 g/t Gold at Slivovo
Alteration, characterized by silicification, pyritization, sericitization, and decalcification, is focused in the pebble conglomerates. Late-stage formation of open ... «Junior Mining Network, giu 15»
Positioning For the Price Turn in Precious and Base Metals
“We have only drilled 3,000 metres, so the discovery of wide zones of auriferous silicification, including 50.4 metres of 0.54 g/t gold and 4. 77-g/t silver is very ... «bnn.ca, giu 15»
Caza Gold Updates on 2015 Exploration Program at Los Andes …
The field work identified a new area of phreatic breccia and widespread silicification, south of the previously identified San Francisco target. Approximately 180 ... «MarketWatch, apr 15»
Gold Standard Completes Initial Resource Estimate for the Dark Star …
Gold mineralization is related to a north to north-northeast-striking zone of silicification focussed along west-dipping contacts, within a coarse conglomerate and ... «Yahoo Finance UK, mar 15»
Angel Gold Announces Historic Drill Hole Silver Values of up to …
The Mineros log for the 1210 g/t Ag sample from hole RBGDDH023 reports only zones of strong silicification and vuggy chlorite infills. The photos show the ... «Marketwired, feb 15»
West Kirkland brings new life to Hasbrouck, Three Hills
You can see the intense zone of silicification and multi-phased brecciation. The system here was long enough lived that you'd have a silicification event to ... «The Northern Miner, dic 14»
Ximen Mining's sixth hole at Brett gold property shows interesting …
Hole 14-06 was drilled to a total depth of 305 metres and intercepted several zones of intense silicification - the largest being a 28.1 metres from 31.5 metres. «Proactive Investors USA & Canada, ott 14»