Sequences of rock units are incompletely known.
岩石单元的层序了解得不完全。
The main parts of SW Yunnan orogenic zones consist of complicated metamorphic rock units.
滇西南造山带的主体由多期变质的岩石单元组成。
Rock units are first emplaced either by deposition onto the surface or intrude into the overlying rock.
岩石单位首先由于沉积被储与表面或侵入覆盖的岩层。
It is composed of four rock units, they are gabbro, pyroxene syenite, (quartz) syenite and syenogranite from early to late.
岩性上自早到晚由辉长岩、辉石正长岩、（石英）正长岩和正长花岗岩等四个岩石单元构成。
Assessment units (AUs)—mappable volumes of rock with common geologic traits—were identified within each province and quantitatively assessed for petroleum potential.
每一个地质区域包含厚于3千米的地层。评估单元——可测绘的普通地理特征岩量——被分区测试，按质量评估油气潜力。
Geologic time unit, rock stratigraphic units and time stratigraphic unit.
地质年代单位、岩石地层单位、年代地层单位。
The presence of geological units of gas under control of rock mechanical properties, fault distribution, seam thickness.
各自然地质单元瓦斯赋存情况受其围岩力学性质、断层分布、煤层厚度等地质因素控制。
The author deeply studied cooling unit of pyroclastic flow in Luanping area and divided the volcanic rock into 12 cooling units.
笔者对滦平地区火山碎屑流冷却单元进行了深入的研究，划分出12个冷却单元。
On the basis of lithological characters and electricity of volcanic rock, the volcanic rocks in Permian strata in Mid-Tarim area were divided into distinct units of lava cell and lava group.
根据火山岩的岩性及电性特征，对塔里木盆地中部(简称塔中)地区下二叠统火山岩地层进行了划分与对比。
On the basis of lithological characters and electricity of volcanic rock, the volcanic rocks in Permian strata in Mid-Tarim area were divided into distinct units of lava cell and lava group.
根据火山岩的岩性及电性特征，对塔里木盆地中部(简称塔中)地区下二叠统火山岩地层进行了划分与对比。
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