向北

The Geopark is situated at the junction of the north east trending Yanshan tectonic belt and the north-north east trending Taihanshan tectonic belt ,and is one of the typical intracontinental orogenic belts in China having complicated geological background.

园区地处北东向燕山构造带和北北东向太行山构造带衔接区内，是我国陆内造山带的典型地区之一，具有复杂的地质背景。

It is overall a monoclinal structure dipping to south, on which three group faulted structures with the directions of E-W, NEE, and NE-SW are developed, and they are tensional faults. The Orinoco heavy oil belt has been divided into two tectonic zones by one regional fault with the trend of NE in the plane, and the characteristics are different in the two tectonic zones.

奥里诺科重油带是目前世界上唯一一个还基本未开发的大规模重油富集带，它位于东委内瑞拉盆地边缘隆起带，总体是一北倾单斜，其上主要发育E-W向、NEE向和NE-SW向三组断裂，且以张性断裂为主，其中有一条北东向区域性大断裂将奥里诺科重油带在平面上划分为两大构造区，其各自的构造特征不同。

The difference between the crust shortening rates in west and east direction of Tianshan, is resulted from the pushing action by Pamir and the clockwise rotation of Tarim. In the west Tianshan (west to 75°E), the convergence is caused by the push of Pamir in NNW direction, and in the east to 75°E, the difference of tectonic deformation is caused by the clockwise rotation of Tarim.

从天山南北山前断层缩短速率的东西差异分析，造成天山东西变形差异显著的原因是帕米尔北向推挤和塔里木顺时针旋转的共同作用：在天山西端(75°E以西)，其挤压缩短(17mm/a)是由于帕米尔高原北北西向的推挤作用；而75°E以东的地区，其差异构造变形的原因则主要是塔里木顺时针旋转的结果。

Aeromagnetic anomalous feature of Xujiaweizi fault depression in the north part of Songliao basin appears two distinctive strips,the one is in NNW direction and the other is in NE direction.

松辽盆地北部徐家围子断陷航磁异常呈现两个明显的条带状，一个带为北北西向，另一个带为北东向。

There are Hannan block in the northwest and Huangling block in the east. Its extended direction is east-northeast in the northwest area, east-west in the middle area and east-northeast in the southeast area,being a southwestward arc made up of many thrust nappes.

该带西北端受汉南地块限制，东部有黄陵地块的阻挡，其展布方向由西北部的北北东向、中部的近东西向、至东南部的北东东向，呈一向西南凸出的弧形，是由一系列呈向西南突出的巨型逆冲推覆断裂带构成。

The sandstone of reservoir spreads NNW-NW. The high thickness of sandstone develops in northwest and center of the study area, and it changes thinner to dactylitic pinchout in the direction of southeast.

砂岩总体走势北北西～北西向，砂岩厚度高值区发育在研究区西北部和中部，向东南方向砂岩有逐渐变薄直至指状尖灭的趋势。

The major deposits in the Sanzhou ore field are related to Yanshanian or later tectonic activity,which is divisible into six sequences represented by:1the Upper Triassic-Lower Jurassic low-angle normal slip fault and associated structures near or immediately occurring on the unconformity between the Lower Carboniferous and the Upper Triassic;2the longitudinally bucking fold in Devonian-Carboniferous and Upper Triassic-Lower Jurassic strata;3the earlier phase thrusts toward northwest;4the transcurrent fault toward northeast;5the later phase thrusts toward northwest;and 6the extensional normal slip minor faults.

彭少梅 ，杨坤光，姚淑梅三洲矿田内主要矿床与燕山期或更晚的构造活动有关。燕山期构造活动可分为六个序列：1下石炭统与上三叠统不整合面附近和不整合面之上的上三叠统―下侏罗统中的低角度正滑断层及伴生构造，2泥盆系―石炭系及上三叠统―下侏罗统中的纵弯褶皱，3北西向逆冲断层，4北东向平移断层，5第二次北西向逆冲断层，6伸展性正滑小断层。

The four structural belts with different directions are found in the area. The faults with NE, NEE and NS trends formed earlier with long-term activity, and control on the basin evolution; the faults with NW trend formed later and overprinted on the early structures.

研究区主要发育4个方向的构造带，其中北东向、北东东向和南北向断层带形成较早且长期活动，控制了盆地的形成；北西向断层带形成较晚，对上述3个方向构造主要起改造作用。

Therefore, we can choose a little worse east and north gyros to cut down the cost of the navigation system.Thirdly, SINS/OD integrated system fails to diminish the error of azimuth angle, this paper introduces the regional positioning system based on Pseudo-Satellite as a member of the integrated system to diminish the error of azimuth angle in the moving state, and further improve the precision of positioning and orientation.

仿真结果表明，天向陀螺漂移和初始方位误差角对系统的定位精度影响较大；而东向和北向陀螺漂移对系统定位精度的影响较小，因此系统中就可以适当放宽对东向和北向陀螺精度的要求，这样就可以适当降低系统的成本。

The analyzing aboved is made from earthquake's space distributing, periodicity, migration phenomenon, repetition, strength, frequency, b value etc., according to data of earthquake station net in Shaanxi Province and microseisms station net watching results in Xi'an area. 3 group faults which are NEE, NW and EW direction control earthquake activities in Guanzhong area. Epicenter depth mostly is 5-25km and in shallow-focus earthquake. Earthquake in east area of Guanzhong was stronger and weaker in the West in history. Fen-Wei earthquake belt showed more activity. Microseisms and small seisms is main movement in recent earthquake, it has 8-10years' period of movement and show the trend that they are strong in the West but weaker in the East. And frequency and biggest magnitude of earthquake is supplement each other. In next years earthquake frequency will lessen but strength enhance, about M4. It presumes there is earthquake climax period in Guanzhong area in 2040 and M5-6 earthquake is happened at that time.

本文在对关中地区区域构造及重磁异常特征的分析基础上，根据陕西省地震台网监测资料及西安地区微地震台网监测成果，从地震的空间分布特征、周期性、迁移现象、重复性、强度、频度、b值分析等方面，对区域地震活动特征、关中地区地震活动规律进行了分析研究，关中地区地震活动主要受北东—北东东向、北西向、东西向三组方向的断裂控制，震源深度多为5—25公里，均属浅源地震，历史地震表现为东强西弱，东部的汾渭地震带表现出较强的地震活动性，近代地震活动主要以微震或小震为主，存在着8—10年的活动周期，近期表现出西强东弱的趋势，地震的频度与地震最大震级呈互补关系，未来的几年间，地震频度会有所减少，强度会增大，将有可能发生4级左右的地震，推测在2040年左右，关中地区将进入地震高潮期，届时将可能有5—6级左右的地震发生。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。