2006年3月4日 · A hypabyssal rock is an igneous intrusive rock that crystallizes at intermediate depths with medium grain sizes and textures. These rocks are formed near the surface where …

2008年6月20日 · Hypabyssal kimberlites have remarkably similar mineralogical characteristics on a world-wide basis regardless of age indicating that similar kimberlite magmas are formed …

2008年6月20日 · Hypabyssal kimberlites provide the best material for understanding the character of the kimberlite magma prior to the formation of diatreme and pyroclastic facies kimberlites. …

2011年2月2日 · Hypabyssal mafic rocks and their spatially associated basalts with inter-pillow cherts and terrigenous sediments that occur in the vicinity of the Kolyuchinskaya Bay in …

2010年1月31日 · Emplacement model for the differentiation of the Panzhihua plutonic-hypabyssal-volcanic complex. a) Eruption of the Emeishan flood basalts, b) intrusion of the …

2009年11月1日 · Hypabyssal kimberlites with high modal proportions of calcite or dolomite have also been excluded on the basis that these represent fractionated kimberlites, due to …

2019年1月1日 · The hypabyssal albitite is leucocratic and pale yellow to white or grey in colour. It shows typically medium-grained granitoid textures, consisting essentially of randomly oriented …

1981年1月1日 · 114 FELSIC VOLCANIC AND HYPABYSSAL ROCKS Occurrence Felsic igneous rocks in Archean greenstone terranes occur as pyroclastichyaloclastic-epiclastic rocks, as …

2007年8月15日 · The hypabyssal kimberlite intrusions from Lac de Gras contain exceptionally well-preserved carbonate assemblages. Both calcite-and dolomite-bearing kimberlites shared …

2011年7月1日 · This hypabyssal kimberlite is slightly different from the hypabyssal kimberlite observed in the sills and dykes described above. The major difference is the absence of …