English translation for "亚期"
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- substage
subage
- Example Sentences:
| 1. | The faulting activity of this area is divided into two phases and four sub - phases 本区断裂活动分为两期四个亚期。 | | 2. | And the most deposital velocity was 220 . 2mm / ka during c17 . 3n sub - period , which mainly occurred at the unloaded area in the front of the delta 其中在c17n ? 3n极性亚期内,最大沉积速率可达220 . 2mm / ka 。这主要发生在三角洲前缘的沉积物卸载区。 | | 3. | The variations in trace element contents and ratios may hold up a mirror to the lake - level fluctuations and climatic changes , which , in turn , have exerted a direct and important effect on the sequence stratigraphic development . collectively , the reservoir rocks from the yanchang formation consist dominantly of the delta front subfacies subaqueous distributary channel and channel - mouth bar microfacies and delta plain subfacies subaerial distributary channel microfacies fine - grained feldspar sandstones and siltstones . the reservoir rocks have been subjected to three stages of diagenetic and porosity evolution : ( 1 ) the porosity reduction by the mechanical compaction and chemical pressure solution during the early diagenetic stage ; ( 2 ) the porosity increase by the dissolution during the a substage of the late diagenetic stage , and ( 3 ) the porosity reduction by the cementation and filling during the b substage of the late diagenetic stage 系统的储层特征研究表明,该区延长组储层成因类型主要为三角洲前缘水下分流河道、河口砂坝及三角洲平原水上分流河道微相细粒长石砂岩、粉砂岩;储层岩石经历了压实,胶结,溶蚀等成岩作用,历经早成岩机械压实和化学压溶孔隙缩小期、晚成岩a亚期溶蚀作用孔隙扩大期及晚成岩a亚期( b亚期)胶结充填孔隙缩小期三个成岩-孔隙演化阶段;储层物性总体上具有较低孔渗、低孔渗的特点,孔隙类型主要为粒间溶孔、残余粒间孔隙、粒内溶孔、晶间孔及晶间溶孔,裂缝不发育,储集岩排驱压力和中值压力较高,孔隙结构类型以细小孔-微孔隙,微细喉-微喉型为主。 |
- Similar Words:
- "亚普马河" English translation, "亚普企业股份有限公司" English translation, "亚普斯塔姆" English translation, "亚普托克" English translation, "亚浦隆尼" English translation, "亚期的" English translation, "亚其林敖包" English translation, "亚奇" English translation, "亚奇金" English translation, "亚奇卡" English translation
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