About: Poikiloblast

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A poikiloblast is a porphyroblast mineral with small inclusions of the previous rock in it. From the texture (if any) shown in the inclusion, the deformation history of the rock can be interpreted, as the inclusions are always older than the porphyroblast. * v * t * e

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  • A poikiloblast is a porphyroblast mineral with small inclusions of the previous rock in it. From the texture (if any) shown in the inclusion, the deformation history of the rock can be interpreted, as the inclusions are always older than the porphyroblast. * v * t * e (en)
  • 变嵌晶(英語:poikiloblast),是一種含有包裹體的斑状变晶礦物。 包裹體是礦物晶體在成長時,所捕獲在原來熔體内的物質,包括礦物或岩石碎片,但也可能是水、天然氣或石油。 若是礦物或岩石碎片,這些包裹體比晶體本身古老。因此研究变嵌晶,可以瞭解岩石在岩石圈的成形歷史。 斑状变晶是一種在細粒基質的變質岩中的大型晶體。變質泥岩中最常見的斑状变晶是石榴石和十字石。如果變泥質岩有良好片狀結構(例如片岩)而基質是片狀雲母,斑状变晶更明綫。類似斑状变晶是捕獲石,它是火成岩中的大晶體。斑状变晶經常與残碎斑晶(porphyroclasts)混淆,它也是大的晶體,但比岩石的基質先生成。 (zh)
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  • A poikiloblast is a porphyroblast mineral with small inclusions of the previous rock in it. From the texture (if any) shown in the inclusion, the deformation history of the rock can be interpreted, as the inclusions are always older than the porphyroblast. * v * t * e (en)
  • 变嵌晶(英語:poikiloblast),是一種含有包裹體的斑状变晶礦物。 包裹體是礦物晶體在成長時,所捕獲在原來熔體内的物質,包括礦物或岩石碎片,但也可能是水、天然氣或石油。 若是礦物或岩石碎片,這些包裹體比晶體本身古老。因此研究变嵌晶,可以瞭解岩石在岩石圈的成形歷史。 斑状变晶是一種在細粒基質的變質岩中的大型晶體。變質泥岩中最常見的斑状变晶是石榴石和十字石。如果變泥質岩有良好片狀結構(例如片岩)而基質是片狀雲母,斑状变晶更明綫。類似斑状变晶是捕獲石,它是火成岩中的大晶體。斑状变晶經常與残碎斑晶(porphyroclasts)混淆,它也是大的晶體,但比岩石的基質先生成。 (zh)
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  • Poikiloblast (en)
  • 变嵌晶 (zh)
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