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1a:Magmatic - Intrusive (Intrusive Breccia) 熔岩性 - 侵入 (侵入角砾岩):At contact of intrusive body, Igneous & (hornfelsed) wall rock clasts. Matrix of intrusive igneous material. Reaction rims around clast common.与侵入体接触,火成的和(角页岩化)边岩碎屑. 侵入火成物质基质. 碎屑边常见反应边缘。
1b:Magmatic - Hydrothermal (Carapace Breccia) 熔岩性 - 热液 (熔岩壳角砾岩):Occur at the top of intrusive bodies. Igneous & (hornfelsed) wall rock clasts. Matrix of pegmatitic minerals (e.g. qt, to, mica), no open cavities.出现在侵入体顶部、火成的和(角页岩化)边岩碎屑. 伟晶的矿物基质(如石英,电气石,云母),没空洞。
1c: Magmatic - Tectonic (Intrusive Breccia) 熔岩性 - 构造 (侵入角砾岩):Igneous & (hornfelsed) wall rock clasts. At contact of intrusive body. Shows deformation textures, angular, clast - supported, clastic matrix.火成的和(角页岩化)边岩碎屑. 与侵入体接触. 显示变形结构,尖角的,碎屑支撑的,碎屑基质。
2a: Endogenous Volcanic (Vein Breccia) 内生火山性 (脉角砾岩):Subvert. Bodies, dominantly volcanic clasts, angular, clast-supported, clastic matrix. Little or no pre - brecciation hydrothermal alteration or veining.近垂直体,主要为火山碎屑,尖角的,碎屑支撑的,碎屑基质. 少许或缺角砾化前热液蚀变或矿脉.
2b:Endogenous Volcanic (Eruptive Volcanic Breccia: Flow Bxa, Tuff, Lapilli Tuff, Agglomerate, Igminbrite, etc.) 内生火山性 (喷发火山角砾岩:流状角砾岩,凝灰岩,火山砾凝灰岩,集块岩,熔结凝灰岩,等.):Predominantly vesicular, glassy volcanic clasts, clastic or igneous matrix. Little or no pre - brecciation hydrothermal alteration or veining, clast or matrix supported, may contain ballitic clasts (bombs). Massive or sub horizontally bedded, can be extensive.主要为多孔的,玻璃火山碎屑,碎屑的或火成的基质. 少许或缺角砾化前热液蚀变或矿脉,碎屑或基质支撑的,可带火山弹.块状或近水平层状,可以是大面积的.
3a:Endogenous Phreatomagnetic (Diatreme Breccia) 内生岩浆蒸气的 (爆发角砾岩):Polymict, with juvenile magmatic clasts/matrix, near - vertical pipe - like breccia bodies. Matrix supported, clastic matrix (may grade to an igneous matrix at depth). Some clasts may be altered and/or veined; rare wood, accretionary lapilli. 多源碎屑的,带初生岩浆碎屑/基质,近垂直岩管似的角砾体. 碎屑基质(可在深部渐变成火成基质). 有些碎屑可以蚀变及/或含矿脉;绝少含木,增生火山砾。
3b:Endogenous Phreatomagnetic (Tuff, Lapilli Tuff, etc.) 内生岩浆蒸气的 (凝灰岩,火山砾凝灰岩,等.):Usually polymict, w/ lava and WR clasts, thin deposits, may be laterlly extensive. Matrix supported, fg with clastic matrix, clasts usually not altered or veined. 通常为多源碎屑,含熔岩和围岩碎屑,矿床薄,可以是横向大面积的. 基质支撑的,幼粒的带碎屑基质,碎屑通常没蚀变或带矿脉。
4a:Endogenous Magmatic - Phreatic (Hydrothermal Veint Breccia) 内生岩浆 - 地下水 (热液脉角砾岩):Clastic matrix or chemically - deposited cement, pre - bxa'n, alt'n and veining. Common no juvenile magmatic material: may have altered/min'lzd clasts &/or matrix, usually polymict, matrix-supported, angular to subrounded.碎屑基质或化学沉积胶结,角砾化,蚀变和矿脉前. 常没有初生岩浆物质:可以有蚀变/矿化碎屑及/和基质,通常为多源碎屑,基质支撑的,棱角至浑圆的。
4b:Endogenous Magmatic - Phreatic (Hydrothermal Eruption Bxa) 内生岩浆 - 地下水 (热液喷发角砾岩):Usually polymict, matrix - supported, clastic matrix. Thin (usually <20 m), flat - lying deposits. May contain plant fragments. Mostly hydrothermally altered clasts (low-T minerals).通常为多源碎屑,基质支撑的,碎屑基质. 薄(通常<20m),平卧矿床. 可合植物碎片. 大部份为热液蚀变碎屑(少-T 矿物)。
5a:Endogenous Phreatic (Hydrothermal Veint Breccia) 内生地下水 (热液脉角砾岩):Hydrothermal cement (e.g. qt, cc, ad, ze, py), vugs: pre-brecciation, mineralized clast and/or matrix, alt'n & vn common: usually polymict, angular to subrounded.热液胶结(如石英,辉铜矿,冰长石,沸石,黄铁矿),晶洞: 角砾化前,矿化碎屑和/或基质,蚀变和矿脉常见:通常为多源碎屑,棱角状至次浑圆状。
5b:Endogenous Phreatic (Hydrothermal Eruption Bxa) 内生地下水 (热液喷发角砾岩):Usually polymict, matrix supported, clastic matrix. Mostly hydrothermal alt'd clasts (low - T min'rls), thin (usually <10 m), flat-lying depo's. May contain plant fragments. 通常为多源碎屑,基质支撑,碎屑基质. 大部份为热液蚀变碎屑(少 - T矿物),薄(通常<10m),平卧矿床. 可带植物碎片。
6:Tectonic (Fault Breccia, Mylonite) 地壳构造的 (断层角砾岩, 糜棱岩):Associated with identifiable fault structures, clast aligned, imbricated with slickensides, shows deformation textures, clastic matrix.与可识别的断层构造相关,碎屑排列,成鳞迭状/成瓦迭状并带擦光面,显示变型结构,碎屑基质.
7:Sedimentary 沉积的:Subhorizontal bedding sedimentary structures, generally matrix - supported, clastic matrix. May (but not all) are polymict, with rounded clasts.近水平层状沉积构造,一般为基质支撑的,碎屑基质. 可以(但非所有)是多源碎屑,带浑圆的碎屑. |
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