Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun A volcanic pipe that is filled with breccia, formed by a subterranean gaseous explosion.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun geology A cone-shaped
volcanic vent produced by theexplosion of gas-filledmagma .
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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Detailed geologic mapping at 1:5000 and 1:500 scale in the Cila claim block has identified a potassically altered composite pluton composed of diatreme breccia, diorite, granodiorite and granite.
unknown title 2011
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REE mineralization in the Bull Hill SW resource area is contained within intrusive dikes, veins, and stockwork of FMR, transitional carbonatite, and carbonatite that invade heterolithic intrusive breccia of the Bull Hill diatreme.
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The area is cut by primary east-west and northeasterly trending structures and is adjacent to the EVG claims where it is believed northeasterly trending structures intersect a diatreme breccia body at the North Stock orebody.
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April 2010 established multiple uranium bearing zones, and the commencement of seismic profiling of the Blue Island diatreme target.
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Drill holes CBX001 to CBX005 are from the Fife Island target, and the CBX006C assay is from one of the deeper fault zones on the Blue Island diatreme target.
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In addition to the tabular zone the Company has begun to characterize some of the diatreme breccia feeder zones, with rock sawn channel samples including 83.59 g/t gold over 24 metres and 20.14 g/t gold over 12 metres.
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Based on the Company's work Miwah is resolving into two components; a large 1,200 metre long, at least 300 to 400 metre wide, approximately 200 metre thick tabular zone; and vertical diatreme breccia feeder zones that are beneath and cut through this.
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This profiling will be used to identify major structures within the diatreme in preparation for Winter 2011 drilling.
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In addition to the tabular zone the Company has begun to characterize some of the diatreme breccia feeder zones, with rock sawn channel samples including 83.59 g/t gold over 24 metres and 20.14 g/t gold over 12 metres.
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Based on the Company's work Miwah is resolving into two components; a large 1,200 metre long, at least 300 to 400 metre wide, approximately 200 metre thick tabular zone; and vertical diatreme breccia feeder zones that are beneath and cut through this.
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