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parent rock horizon 母质层
The third-deepest soil zone in ABC soil, unaltered by weathering and made up of the parent rock from which the two uppermost layers derive as well as other mineral materials. 剖面层ABC土壤剖面层中深度排第三的剖面层，不受风化的影响，由上两层及其他矿物组成的母岩所构成
Once formed, zircon crystals are so durable that they can persist even if their parent rock is exposed at the surface and destroyed by weathering and erosion. 但是，这些锆石所蕴含的讯息似乎隐晦不清，部份原因是地质学家无法确定它们的母岩。
The Cretaceous rhyolite-porphyry is the main parent rock Of the deposit, extending inNE-orientation. 白垩纪流纹斑岩为其主要的成矿母岩，可能为NE向展布。
Mylonite is thought as the result of mylonite parent rock"s brittle crush after it is porosity damaged plastically. 认为糜棱岩是原岩韧性孔洞损伤后脆性破碎的结果。
The main parent rock of the early Yanchang Formation is complex metamorphic rock of Archean and metavolcanic rock-sedimentary rock system. 延长组早期沉积的母岩主要为太古宙的复杂变质岩系及下元古界的变火山-沉积岩系。
Soil differs from its parent rock due to interactions between the lithosphere, hydrosphere, atmosphere, and the biosphere. 由于地壳、水汽、大气、和生物圈的相互作用，土层有别于母质层。
But the information these zircons carried seemed ambiguous, in part because geologists were unsure of the identity of their parent rock. 从那时起，个别的锆石结晶即开始对地球早期的形成过程提供进一步的讯息。
The third-deepest soil zone in ABC soil,unaltered by weathering and made up of the parent rock from which the two uppermost layers derive as well as other mineral materials. 剖面层ABC土壤剖面层中深度排第三的剖面层，不受风化的影响，由上两层及其他矿物组成的母岩所构成
The third - deepest soil zone in ABC soil, unaltered by weathering and made up of the parent rock from which the two uppermost layers derive as well as other mineral materials. 剖面层abc土壤剖面层中深度排第三的剖面层，不受风化的影响，由上两层及其他矿物组成的母岩所构成
The third-deepest soil zone in ABC soil, unaltered by weathering and made up of the parent rock from which the two uppermost layers deriveas well as other mineral materials. 剖面层ABC土壤剖面层中深度排第三的剖面层,不受风化的影响,由上两层及其他矿物组成的母岩所构成。
Neutro-acid batholith of Yanshan stage is the parent rock of small metallogenetic rock which is the metallogenetic parent rock of porphyry-type molybdenum deposit. 燕山期的中酸性岩基是成矿小岩体的母岩,而成矿小岩体又是斑岩型钼矿床的成矿母岩。
Based on analysis of heavy minerals,paleocurrent and clastic particles grading,the sediment of Yanchang section in Ordos Basin comes from two types of parent rock. 根据重矿物组合、古流向和碎屑颗粒粒度等资料,对鄂尔多斯盆地上三叠统延长组物源区的母岩性质、物源方向及演变特征等进行了分析。
It has been found that the moisture contents in soil were related with soil profile, open or close during setting up the orchards and the parent rock deriving the soil. 结果表明，果园土壤含水量与土壤层次、建园时开梯与不开梯以及果园成土母质有关，果园土壤含水量年变化规律与全年每月降水量有关。
But caution is warranted.Quartz can form in the last stages of magma crystallization even if the parent rock is not granitic, although such quartz is much less abundant. 然而，必须谨慎的是，即使母岩不是花冈岩，在岩浆结晶的最后阶段仍然可以形成石英，只不过含量少得多。
There is no significant difference in Q/I characteristics among upland soils developed from different parent rocks. 而由不同母质发育的旱地赤红壤，Q/I特性差别不大。
The court is acting in loco parent. 正以家长地位行为的法院。
To the south,they are characterized by weathered parent rocks of volcanic,intrusive,and hypermetamorphic rocks and come f... 以南重矿物母岩特征，以侵入岩、火山岩和浅变质岩为主的风化物质，主要来源于青藏高原冰碛和寒冻风化物。
Elements characteristics of parent rocks and their relation to banana quality in Tianbao banana orchards,Zhangzhou were analyzed. 对漳州天宝香蕉种植区成土母质的元素特征及其与香蕉品质关系进行分析。
The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。